博士（工学）, 慶応義塾大学

PhD (Engineering), Keio University

Fiber-optic sensors

Fiber optics

光機能性高分子

Nanotechnology/Materials, Polymer chemistry

Nanotechnology/Materials, Polymer materials

Nanotechnology/Materials, Structural and functional materials

Nanotechnology/Materials, Composite materials and interfaces

01 May 2010
The University of Electro-Communications, Assistant Professor

08 Jun. 2009 - 28 Feb. 2010
University of Washington, Research Associate

2016
高分子武蔵野懇話会幹事, 高分子学会, Society

Oct. 2015
一般財団法人 エヌエフ基金
電力を消費しない肉眼検知式光ファイバー構造物ヘルスモニタリングの開発
エヌエフ基金研究開発奨励賞
Publisher

Mode-dependent dye absorption in phthalocyanine-doped acrylic optical fiber
Takahiro Shigeyama; Rei Furukawa
Japanese Journal of Applied Physics, IOP Publishing, 61, 6, 061001-061001, 19 May 2022, Abstract

Phthalocyanine has attractive features as a dopant for plastic optical fibers. Its planar molecular structure and red absorption band are suitable for the design of fiber-optic strain sensors that use the dynamic orientation of dye induced by the deformation of the host matrix. The guidelines to achieve a phthalocyanine-doped fiber with a ruled dispersing manner were investigated. A synthesized fiber using phthalocyanine decorated with tertiary butyl groups showed mode-dependent absorption, which suggested gradual dye distribution in the core radial direction.
Scientific journal

Fabrication of liquid-core fiber-optic structure for large-area CO2 sensing using ionic liquids
M. Okura; H. Takana; F. Ohuchi; R. Furukawa
Journal of Fluid Science and Technology, Japan Society of Mechanical Engineers, 16, 1, JFST0004-JFST0004, 01 Jan. 2021, Peer-reviwed
Scientific journal, English

Stress-induced absorption of a birefringence-reduced polymer optical fiber with doped core
Keigo Uzawa; Takamichi Tozaki; Kentaro Yano; Eisuke Nihei; Rei Furukawa
Jpn. J. Appl. Phys., 物理系学術誌刊行センター, 59, SDDF06, 1-7, 03 Jan. 2020, Peer-reviwed, Invited
Scientific journal, English

Waveguide optimization and its evaluation of a doped polymer optical fiber designed for visual detection of stress
Chie Hirose; So Kamimura; Rei Furukawa
Jpn. J. Appl. Phys., 物理系学術誌刊行センター, 59, SDDF07, 1-6, 03 Jan. 2020, Peer-reviwed, Invited
Scientific journal, English

Water Purification in Dark Conditions Using Photocatalytic Light-leakage Type Plastic Optical Fiber
Haruki Nagakawa; Takuya Sato; Goki Takahashi; Tsuyoshi Ochiai; Rei Furukawa; Morio Nagata
Chem. Lett., 日本化学会, 49, 2, 199-202, 19 Dec. 2019, Peer-reviwed, In this study, we fabricated a device that can be used for water purification in dark areas by combining a light-leakage type plastic optical fiber with a photocatalyst. The light-leakage type fiber was prepared by adding a scattering agent to the fiber core, and the titanium dioxide photocatalyst was composited by a two-layer coating method. Photocatalytic decomposition of methylene blue was performed by introducing light into the fiber without direct light irradiation.
Scientific journal, English

Fabrication of a Fluorophore-Doped Cylindrical Waveguide Structure Using Elastomers for Visual Detection of Stress
Chie Hirose; Nobuko Fukuda; Takafumi Sassa; Koji Ishibashi; Tsuyoshi Ochiai; Rei Furukawa
Fibers, MDPI, 7, 5, 37/1-37/10, 26 Apr. 2019, Peer-reviwed, A fiber-optic strain sensor that can show strain via color change and which can be viewed using human eyes has demand in the civil engineering field for alerting purposes. A previous sensor was fabricated using PMMA (Poly(methyl methacrylate)), which had the exceeding hardness to exhibit satisfactory sensor performance. In this research, an elastomer-based fiber-optic structure was fabricated to enhance the elastic response of such sensors and to enlarge the waveguide cross section. Various organic fluorophores were added to the core and cladding regions of the elastic waveguide to induce energy flow from the core to the cladding when stress is applied to the waveguide. Elastomer pairs suitable for the core and cladding were selected from among several candidate materials having high transparency. A method of dispersing fluorophores to each host elastomer and constructing an excellent core-cladding interface using the selected materials was proposed. To investigate the time-dependent changes in the fluorescence of the doped elastomer waveguide, the absorption and emission spectra were monitored after the host elastomers were cured.
Scientific journal, English

ポリマー光ファイバーを用いたひずみセンシング技術
古川怜
フォトニクスニュース, 応用物理学会フォトニクス分科会, 1, 5, 44-47, 15 Feb. 2019, Peer-reviwed, Invited
Scientific journal, Japanese

Enhancement of Photocurrent by Integration of an Artificial Light-Harvesting Antenna with a Photosystem I Photovoltaic Device
Yuya Takekuma; Haruki Nagakawa; Tomoyasu Noji; Keisuke Kawakami; Rei Furukawa; Mamoru Nango; Nobuo Kamiya; Morio Nagata
ACS Applied Energy Materials, 2, 6, 3986-3990, 07 Jan. 2019, Peer-reviwed
Scientific journal, English

Efficient hydrogen production using photosystem I enhanced by artificial light harvesting dye
Haruki Nagakawa; Ayano Takeuchi; Yuya Takekuma; Tomoyasu Noji; Keisuke Kawakami; Nobuo Kamiya; Mamoru Nango; Rei Furukawa; Morio Nagata
Photochemical & Photobiological Sciences, Royal Society of Chemistry, 18, 2, 309-313, 04 Jan. 2019, Peer-reviwed, In this study, we improved the hydrogen production efficiency by combining photosystem I with an artificial light harvesting dye, Lumogen Red. In the reaction system, Lumogen Red allows light absorption and energy transfer to photosystem I by Förster resonance energy transfer; therefore, the Pt nanoparticles act as active sites for hydrogen generation.
Scientific journal, English

Selective immobilization of bacterial light-harvesting proteins and their photoelectric responses
Rei Furukawa; Masaharu Kondo; Shunsuke Yajima; Kaori Harada; Kenji V.P. Nagashima; Morio Nagata; Kouji Iida; Takehisa Dewa; Mamoru Nango
MRS Communications, Cambridge University Press, 8, 3, 1124-1128, Sep. 2018, Peer-reviwed, Invited
Scientific journal, English

Fabrication of cylindrical waveguiding structure using elastomers
Chie Hirose; Rei Furukawa; Nobuko Fukuda; Takafumi Sassa
ECS proceedings, The Electrochemical Society, sc1, 26 Aug. 2018, Peer-reviwed
International conference proceedings, English

Spectrum analysis of dichroic dye-doped polymer optical fiber
Takamichi Tozaki; Rei Furukawa; Kentaro Yano
ECS proceedings, The Electrochemical Society, sc10, 26 Aug. 2018, Peer-reviwed
International conference proceedings, English

ひずみ「見える化」へ向けたポリマー光ファイバーセンサー
古川怜; 上村創; 福田伸子; 佐々高史
IEICE Technical Report, 117, 447, 15-16, 15 Feb. 2018, Invited
Symposium, Japanese

Strain sensing based on radiative emission-absorption mechanism using dye-doped polymer optical fiber
S. Kamimura; R. Furukawa
APPLIED PHYSICS LETTERS, AMER INST PHYSICS, 111, 6, 063301-1-063301-4, Aug. 2017, Peer-reviwed, A stress sensor based on a dye-doped polymeric optical fiber is able to detect stress by simple comparison of two luminescence peaks from a pair of energy transfer organic dyes. Coumarin 540A (donor) and Rhodamine 6G (acceptor) were doped in the core and cladding of the fiber, respectively. For various laser wavelengths, the change in the near-field pattern and visible emission spectrum upon variation in the fiber bending diameter was evaluated. From a comparison with a low-numerical-aperture fiber, it is shown that the sensitivity of the sensor is controllable by optimization of the waveguide parameters. Published by AIP Publishing.
Scientific journal, English

Stress detection using polymer optical fiber with FRET pair dyes
R. Furukawa; S. Kamimura
ECS Transactions, Electrochemical Society Inc., 80, 10, 1309-1312, 2017, A stress sensor based on a dye-doped polymeric optical fiber was proposed to detect stress by simple comparison of two luminescence peaks from a pair organic dyes. Coumarin 540A (donor) and Rhodamine 6G (acceptor) were doped in the core and cladding of the polymer optical fiber, respectively. By exciting the donor dye in the core, the change in the emission spectrum upon variation in the fiber bending diameter was evaluated. From a comparison with emission spectrum of acceptor dye, it is shown that the sensitivity of the sensor is controllable by optimization of the waveguide parameters.
International conference proceedings, English

Reflection noise reduction effect of graded-index plastic optical fiber in multimode fiber link
Azusa Inoue; Rei Furukawa; Motoharu Matsuura; Yasuhiro Koike
OPTICS LETTERS, OPTICAL SOC AMER, 39, 12, 3662-3665, Jun. 2014, Peer-reviwed, We experimentally demonstrate that a graded-index plastic optical fiber (GI POF) can significantly reduce reflection noise in a multimode fiber link with a vertical-cavity surface-emitting laser (VCSEL). By directly observing beams backreflected to the VCSEL, we show that the noise reduction effect is closely related to random mode coupling because of light scattering by microscopic heterogeneities in the GI POF core material. This suggests that intrinsic mode coupling can lower the self-coupling efficiency of the light backreflected to the VCSEL cavity through beam quality degradation. Using GI POFs, low-cost radio-over-fiber systems for indoor networks can be realized without optical isolators or fiber end-face polishing. (C) 2014 Optical Society of America
Scientific journal, English

Evaluation of modal noise in graded-index silica and plastic optical fiber links for radio over multimode fiber systems
Motoharu Matsuura; Rei Furukawa; Yuki Matsumoto; Azusa Inoue; Yasuhiro Koike
OPTICS EXPRESS, OPTICAL SOC AMER, 22, 6, 6562-6568, Mar. 2014, Peer-reviwed, We have evaluated and compared modal noise induced in a graded-index silica multimode fiber (GI-MMF) link and a graded-index plastic optical fiber (GI-POF) link with the misaligned fiber connections. In radio over fiber (RoF) systems using these optical fibers, modal noise appears as unwanted amplitude modulation in the received signal, and results in degradation of the RoF transmission performance. In this work, we have evaluated the modal noise induced in GI-MMFs and GI-POFs with its same core diameter of 50 mu m. Our results show that GI-POFs have an inherently higher tolerance to misaligned connection and less modal noise than GI-MMFs in terms of both the error-vector magnitude and the speckle pattern of the transmitted signals. (C)2014 Optical Society of America
Scientific journal, English

Core stress distribution of phase shifting multimode polymer optical fiber
Rei Furukawa; Morio Nagata; Kenji Mishima; Motoharu Matsuura; Azusa Inoue; Akihiro Tagaya; Yasuhiro Koike
APPLIED PHYSICS LETTERS, AMER INST PHYSICS, 103, 21, 720-725, Nov. 2013, Peer-reviwed, Poly-(methyl methacrylate-co-benzyl methacrylate) polarization-maintaining optical fibers are known for their high response to normal stress. In this report, responses to higher stress levels up to 0.45 MPa were investigated. The stress amplitude and direction in the fiber cross section were calculated and analyzed with a coincident mode-field obtained from the near-field pattern. The stress amplitude varies significantly in the horizontal direction and is considered to create multiple phases, explaining the measurement results. To investigate possible permanent deformation, the core yield point profile was analyzed. Although it largely exceeds the average applied stress, the calculated stress distribution indicates that the core could partially experience stress that exceeds the yield point. (C) 2013 AIP Publishing LLC.
Scientific journal, English

Efficient group delay averaging in graded-index plastic optical fiber with microscopic heterogeneous core
Azusa Inoue; Takafumi Sassa; Rei Furukawa; Kenji Makino; Atsushi Kondo; Yasuhiro Koike
OPTICS EXPRESS, OPTICAL SOC AMER, 21, 14, 17379-17385, Jul. 2013, Peer-reviwed, Intrinsic mode coupling in a graded-index plastic optical fiber (GI POF) is investigated using the developed coupled power theory for a GI POF with a microscopic heterogeneous core. The results showed that the intrinsic material properties can induce random power transitions between all the guided modes, whereas the structural deformation of microbending results in nearest-neighbor coupling. It was numerically demonstrated that efficient group-delay averaging due to intrinsic mode coupling brings the pronounced bandwidth enhancement in fibers with much shorter length than the case of glass multimode fibers. (C) 2013 Optical Society of America
Scientific journal, English

Modal noise impact in plastic optical fiber links for radio-over-fiber systems
Motoharu Matsuura; Rei Furukawa; Azusa Inoue; Yasuhiro Koike
IET Conference Publications, 2013, 622, 1158-1160, 2013, Peer-reviwed, We evaluate and compare the modal noise impacts in silica-based multimode fibers (MMFs) and plastic optical fibers (POFs) with same core diameters of 50-μm. In this experiment, we show that POFs fundamentally have higher tolerance to offset connection and lower modal noise than MMFs in terms of error-vector magnitude and speckle pattern.
International conference proceedings, English

Significant noise reduction in multimode fiber links using graded-index plastic optical fiber with microscopic heterogeneous core
Azusa Inoue; Rei Furukawa; Motoharu Matsuura; Yasuhiro Koike
IET Conference Publications, 2013, 622, 843-845, 2013, Peer-reviwed, We show that the reflection noises in multimode fiber links can be significantly reduced by using graded-index plastic optical fiber with microscopic heterogeneous core. It is suggested that the intrinsic mode coupling due to the microscopic heterogeneities can result in the noise reduction without optical isolator and fiber end-face polishing.
International conference proceedings, English

Two-dimensional patterning of bacterial light-harvesting 2 complexes on lipid-modified gold surface
Shunsuke Yajima; Rei A. Furukawa; Morio Nagata; Shunsuke Sakai; Masaharu Kondo; Kouji Iida; Takehisa Dewa; Mamoru Nango
APPLIED PHYSICS LETTERS, AMER INST PHYSICS, 100, 23, 233701, Jun. 2012, Peer-reviwed, In a photosynthetic membrane, nano-scale patterns of light-harvesting (LH) pigment-protein complexes play an essential role in capturing photons and ensuring efficient excitation energy transfer. LH complexes 1 and 2 have drawn attention as building blocks of a nano-scale photoelectric device. For obtaining a device with efficiency comparable to that of the natural photosynthesis, a method has to be established for forming a two-dimensional assembly of LH complexes around a metal electrode. In this study, LH2 complexes isolated from Rb. sphaeroides were immobilized on a patterned gold surface. Quenching of photo-excitation energy by gold was prevented through the placement of a self-assembled phospholipid monolayer between the LH2 complexes and the gold surface. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4726105]
Scientific journal, English

Characterization of Fluorescence Resonance Energy Transfer of a Nanopatterned Fluorophore Doped Polymer Film Fabricated Using Nanoimprint Lithography
Rei Furukawa
ORGANIC PHOTONIC MATERIALS AND DEVICES XIII, SPIE-INT SOC OPTICAL ENGINEERING, 7935, 6562-6568, 2011, Peer-reviwed, Based on the distributed structure of the dye-protein complexes in a photosynthetic membrane, tandem structure with two dye-doped polymer layers was fabricated using the nanoimprint lithography. The energy transfer behavior of different tandem patterns were studied using fluorescence microscope. As a result, duty ration of 1: 1 has shown the even fluorescence patterns from the acceptor region, whereas the patterns with higher duty ratios had shown only partial fluorescence from the donor-acceptor interface.
International conference proceedings, English

Pressure Measurement Based on a Multimode Phase Retarder Plastic Optical Fiber
Rei A. Furukawa; Akihiro Tagaya; Yasuhiro Koike
ACS APPLIED MATERIALS & INTERFACES, AMER CHEMICAL SOC, 1, 3, 720-725, Mar. 2009, Peer-reviwed, This paper demonstrates a polarimetric pressure measurement using a multimode phase retarder plastic optical fiber fabricated from a birefringence-controllable copolymer. An optimal composition that gives the most pronounced response to pressure was studied by comparing the extinction ratio of fibers fabricated with different copolymer compositions, A simple sensor design with a single-fiber structure was proposed that has detection capabilities similar to those of the conventional dual-path structure of a Mach-Zehnder interferometer. A linear relationship between the fiber birefringence and the applied pressure was observed in a range from 0 to 0.06 MPa. A polarimetric sensitivity of 1.56 x 10(-5) MPa-1 was obtained experimentally from the relationship between the birefiringence and pressure.
Scientific journal, English

Differential Mode Analysis of a Polarization-Maintaining Graded-Index Plastic Optical Fiber Using Macrobending
Rei A. Furukawa; Akihiro Tagaya; Yasuhiro Koike
JAPANESE JOURNAL OF APPLIED PHYSICS, IOP PUBLISHING LTD, 48, 2, 022503/1-7, Feb. 2009, Peer-reviwed, Bending and launching conditions that a polarization-maintaining graded-index plastic optical ber (PMGIPOF) operates with its greatest extinction ratio (ER) were studied using a setup that measures ER for selective modes. Quantitative values of birefringence at the core local points were measured by polarized optical microscopy with a Berek compensator. Local birefringence and the photoelastic effect were confirmed to affect ER differently manner with regard to the launching conditions. (C) 2009 The Japan Society of Applied Physics
Scientific journal, English

Modal analysis of a multimode polarization-maintaining plastic optical fiber fabricated using poly(methyl methacrylate/benzyl methacrylate) copolymer
Rei A. Furukawa; Akihiro Tagaya; Yasuhiro Koike
APPLIED PHYSICS LETTERS, AMER INST PHYSICS, 93, 10, 6562-6568, Sep. 2008, Peer-reviwed, We report an experimental demonstration of a multimode polarization-maintaining fiber that has extinction ratio (ER) of 14.0 dB at 1 m propagation, and this value was compared to those measured from different kinds of commercially available multimode fibers. The sample fiber was fabricated using poly (methyl methacrylate/benzyl methacrylate), which we named as polarization-maintaining graded-index plastic optical fiber. A measurement setup was developed in order to measure the ER in the cases when different points of the fiber core was launched. Birefringence and the output near field pattern for each launching points have exhibited a clear correlation to the measured ER.l (c) 2008 American Institute of Physics.
Scientific journal, English

Polarization-maintaining mechanism of a birefringence-reduced plastic optical fiber fabricated using poly(methyl methacrylate/benzyl methacrylate) copolymer
Rei Furukawa; Akihiro Tagaya; Shuichi Iwata; Yasuhiro Koike
JOURNAL OF PHYSICAL CHEMISTRY C, AMER CHEMICAL SOC, 112, 21, 7946-7952, May 2008, Peer-reviwed, In order to propose a multimode polarization-maintaining fiber in a large core diameter, polarization-maintaining graded-index plastic optical fiber (PMGIPOF) was fabricated using a birefringence-reduced copolymer of poly(methyl methacrylate/benzyl methacrylate). Successful reduction of orientational birefringence in the PMGIPOF was verified using polarized optical microscopy. The extinction ratio measured from the PMGIIPOF was significantly higher than the value obtained for the step-index (SI) POF (14.3 and 0.5 dB for I in, respectively). Photoelastic birefringence in the PMGIPOF was studied using fiber macrobending. Retardation induced by the macrobending was observed in a manner of high regularity in the PMGIPOF, where as the other types of POFs did not show such regularity. Furthermore, the polarization-maintaining property of the PMGIPOF was effective at maximum 10 in propagation.
Scientific journal, English

Noise reduction for fiber optic NTSC signal transmission
Rei Furukawa; Keiji Uehara; Satoshi Takahashi; Nobuhiro Ohtsu; Yasuhiro Koike
INTEGRATED OPTICS: DEVICES, MATERIALS, AND TECHNOLOGIES XII, SPIE-INT SOC OPTICAL ENGINEERING, 6896, 68960T/1-68960T/8, 2008, Peer-reviwed, Optimum combination of light source and medium (optical fiber) for radio-over-fiber application in home optical network was investigated. Japan National Television System Committee (NTSC-J) signal was employed to study the spectrum and the movie quality in different multi-mode fiber link. Noise in glass-based multi-fiber link was lowered by switching the light source from a Fabry-Perot (FP) to a vertical cavity surface-emitting laser (VCSEL). A graded-index plastic optical fiber (GIPOF) link performed a low-noise transmission using FP laser diode. The results supported the GIPOF link to be a good low-cost analog optical link solution using FP laser diode and no lens.
International conference proceedings, English

Waveguiding property of a plastic optical fiber fabricated using low-birefringence copolymer
Rei Furukawa; Akihiro Tagaya; Shuichi Iwata; Yasuhiro Koike
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, INST PURE APPLIED PHYSICS, 46, 45-49, L1182-L1184, Dec. 2007, Peer-reviwed, We propose a polarization-maintaining waveguide fabricated with a large waveguiding area (core diameter: 750 mu m) using polymeric material. We previously developed and demonstrated a zero-birefringence copolymer in a film structure of 40 to 70 mu m thickness. This time, we have fabricated a 20-m-long optical fiber using the same copolymer as the core material. The polarization-maintaining performance of the low-birefringence polymer optical fiber was studied by comparison with that for other types of plastic optical fibers. As a result, the low-birefringence polymer optical fiber showed a high extinction ratio for fiber lengths between 0.4 and 20 m.
Scientific journal, English

Fiber optic transmission of analog signals
Rei Furukawa; Keiji Uehara; Satoshi Takahashi; Nobuhiro Ohtsu; Yasuhiro Koike
LINEAR AND NONLINEAR OPTICS OF ORGANIC MATERIALS VII, SPIE-INT SOC OPTICAL ENGINEERING, 6653, 66530G/1-66530G/8, 2007, Peer-reviwed, We demonstrate fiber optic analog transmission using NTSC-J signal. Multimode fibers with different core diameter ranging from 9 to 500 Am were tested in terms of transmission capability under different degree of misalignments, between fibers. Graded index plastic optical fiber made of 500 Am core have shown high potential in stable analog transmission based on effective light coupling and low modal noise impairment.
International conference proceedings, English

Design of a passive-matrix smart window by the conjugated polymer electrochromics
R. Furukawa; C. Xu; M. Taya
Materials Research Society Symposium Proceedings, 937, 53-58, Apr. 2006, Peer-reviwed
International conference proceedings, English

ポリマー光ファイバー業界・若手の苦悩と挑戦 No.3 「色でわかる」ひずみセンサーを土木現場へ
古川怜
新川電機株式会社, 12 May 2018, SHINKAWA Times, 3月, Japanese, Invited, Introduction commerce magazine

ポリマー光ファイバー業界・若手の苦悩と挑戦 No.2 光合成の波長変換と光ファイバーの出会い
古川怜
新川電機株式会社, 06 Mar. 2018, SHINKAWA Times, 3月, Japanese, Invited, Introduction commerce magazine

ポリマー光ファイバー業界・若手の苦悩と挑戦 No.1 ポリマー光ファイバーのこれまで
古川怜
新川電機株式会社, 06 Feb. 2018, SHINKAWA Times, 2月, Japanese, Invited, Introduction commerce magazine

ポリマー光ファイバーで挑戦する民間の防災 —有機材料の利点を生かして—
古川怜
株式会社オプトロニクス社, 10 Jan. 2018, オプトロニクス, 433, 171-174, Japanese, Invited, Introduction commerce magazine, 0286-9659

Suppressing core inhomogeneity of the terpolymer optical fiber using intermediate layer
Shingo Sode; Kimiteru Yamauchi; Rei Furukawa
Oral presentation, English, The 31st International Conference on Plastic Optical Fibers (POF2023), Peer-reviewed
19 Sep. 2023
17 Sep. 2023- 21 Sep. 2023

Scattering analysis of terpolymer-based fiber-optic strain sensor fabricated using interfacial gel polymerization
Rei Furukawa; Yuki Ino; Kimiteru Yamauchi
Invited oral presentation, English, International Congress on Pure & Applied Chemistry (ICPAC) Bali 2023, Invited
14 Sep. 2023
12 Sep. 2023- 17 Sep. 2023

シアン系二色性色素の配向を用いた複屈折消去性ポリマー光ファイバーによる応力方向検知
山崎 駿人; 矢野 賢太郎; 古川 怜
Poster presentation, Japanese, 第９３回武蔵野地区高分子懇話会, 高分子学会関東支部, オンライン, https://spsj.or.jp/branch/kanto/, Domestic conference
02 Dec. 2022

フタロシアニン誘導体を添加したポリマー光ファイバーの導波解析
滋山 隆広; 古川 怜
Poster presentation, Japanese, 第９３回武蔵野地区高分子懇話会, 高分子学会関東支部, オンライン, https://spsj.or.jp/branch/kanto/, Domestic conference
02 Dec. 2022

メタクリレート系ポリマーを使った光学センシング
井野 佑樹; 古川 怜
Poster presentation, Japanese, 第９３回武蔵野地区高分子懇話会, 高分子学会関東支部, オンライン, https://spsj.or.jp/branch/kanto/, Domestic conference
02 Dec. 2022

複屈折消去性ポリマーのポリマー光ファイバーへの応用の検討
早出 真悟; 古川 怜
Poster presentation, Japanese, 第９３回武蔵野地区高分子懇話会, 高分子学会関東支部, オンライン, https://spsj.or.jp/branch/kanto/, Domestic conference
02 Dec. 2022

ポリマー光ファイバー中のフタロシアニン誘導体における偏波伝搬特性
春山 慎太郎; 古川怜; 滋山 隆広
Poster presentation, Japanese, 第９３回武蔵野地区高分子懇話会, 高分子学会関東支部, オンライン, https://spsj.or.jp/branch/kanto/, Domestic conference
02 Dec. 2022

プラスチック光ファイバーにおけるモード定常化の解析
山内 公暉; 古川怜
Poster presentation, Japanese, 第９３回武蔵野地区高分子懇話会, 高分子学会関東支部, オンライン, https://spsj.or.jp/branch/kanto/, Domestic conference
02 Dec. 2022

Plastic optical fiber doped with phthalocyanine
Rei Furukawa; Shintaro Haruyama; Takahiro Shigeyama
Invited oral presentation, English, International Congress on Pure & Applied Chemistry Kota Kinabalu (ICPAC Kota Kinabalu), Invited, Peer-reviewed
24 Nov. 2022
24 Nov. 2022- 27 Nov. 2022

シアン系二色性色素を添加した二重コア構造ポリマー光ファイバーの作製と導波路特性解析
山崎 駿人; 矢野 賢太郎; 古川 怜
Oral presentation, Japanese, 第71回高分子討論会, 高分子学会, 北海道大学, https://main.spsj.or.jp/tohron/71tohron/program.html, Domestic conference
07 Sep. 2022

複屈折相殺性二層コアポリマー光ファイバーの屈折率分布解析
早出 真悟; 古川 怜
Oral presentation, Japanese, 第71回高分子討論会, 高分子学会, 北海道大学, https://main.spsj.or.jp/tohron/71tohron/program.html, Domestic conference
07 Sep. 2022

複屈折消去ポリマーと光ファイバーセンシング
古川怜
Invited oral presentation, Japanese, 第66回光波センシング技術研究会(LST)講演会 光ファイバセンシング・イメージング技術の新展開, Invited, 応用物理学会 光波センシング技術研究会(LST), オンライン開催, https://annex.jsap.or.jp/kohasensing/, Domestic conference
19 Jul. 2022

Fabrication and polarized waveguiding analysis of terpolymer-based optical fiber doped with phthalocyanine derivatives
Shintaro Haruyama; Takahiro Shigeyama; Hayato Yamazaki; Rei Furukawa
Oral presentation, English, 第71回高分子学会年次大会, 高分子学会, オンライン開催, https://main.spsj.or.jp/nenkai/71nenkai/, Domestic conference
25 May 2022

Analysis of the effect of copolymer in Zero-Birefringence polymer optical fiber on steady-state speed
Kimiteru Yamauchi; Shingo Sode; Hayato Yamazaki; Rei Furukawa
Oral presentation, English, 第71回高分子学会年次大会, 高分子学会, オンライン開催, https://main.spsj.or.jp/nenkai/71nenkai/, Domestic conference
25 May 2022

二色性色素を添加した複屈折消去性ポリマー光ファイバーの偏波伝搬特性の解析
山崎 駿人; 矢野 賢太郎; 古川 怜
Oral presentation, Japanese, 第69回応用物理学会春季学術講演会, 青山学院大学＆オンライン, https://www.jsap.or.jp/jsap-meeting/past, Domestic conference
24 Mar. 2022

共重合体ポリマー光ファイバーにおける屈折率分布の不均一性
早出 真悟; 山崎 駿人; 古川 怜
Oral presentation, Japanese, 第69回応用物理学会春季学術講演会, 青山学院大学＆オンライン, https://www.jsap.or.jp/jsap-meeting/past, Domestic conference
24 Mar. 2022

発光体担体としてのプラスチック光ファイバー ～ 土木分野への応用試み ～
古川 怜; 佐々 高史; 福田 伸子
Invited oral presentation, Japanese, 2021年度 第3回 光ファイバ応用技術研究会（OFT）, Invited, 電子情報通信学会 光ファイバ応用技術研究会（OFT）, オンライン, https://www.ieice.org/cs/oft/jpn/, Domestic conference
15 Oct. 2021

シアン系二色性色素を添加した複屈折消去性ポリマー光ファイバーによるひずみ検知
山崎 駿人; 矢野 賢太郎; 古川 怜
Poster presentation, Japanese, 2021年度第3回光ファイバ応用技術研究会(OFT), オンライン, https://www.ieice.org/cs/oft/jpn/awards/, Domestic conference
15 Oct. 2021

部分モード励振による複屈折消去性コアポリマー光ファイバーの光伝搬特性解析
早出 真悟; 古川 怜
Poster presentation, Japanese, 2021年度第3回光ファイバ応用技術研究会(OFT), オンライン, https://www.ieice.org/cs/oft/jpn/awards/, Domestic conference
15 Oct. 2021

フタロシアニン誘導体を添加したポリマー光ファイバーの作製と導波路特性解析
滋山 隆広; 古川 怜
Poster presentation, Japanese, 2021年度第3回光ファイバ応用技術研究会(OFT), オンライン, https://www.ieice.org/cs/oft/jpn/awards/, Domestic conference
15 Oct. 2021

Strain Vector Detection Using a Combination of a Birefringence-Controlled Terpolymer Optical Fiber and a Dichroic Dye Dopant
Hayato Yamazaki; Shingo Sode; Keigo Uzawa; Kentaro Yano; Rei Furukawa
Oral presentation, English, OSA Imaging and Applied Optics Congress, The Optical Society, OSA, fully virtual, https://www.osa.org/en-us/meetings/osa_meetings/osa_imaging_and_applied_optics_congress/, International conference
21 Jul. 2021

Strain sensor using a dopant dye with its absorption matching the transmission window of a polymer optical fiber
Hayato Yamazaki; Keigo Uzawa; Kentaro Yano; Rei Furukawa
Oral presentation, English, 第70回高分子学会年次大会, 高分子学会, オンライン開催, https://spsj.or.jp/nenkai/70nenkai/, Domestic conference
27 May 2021

Clustering behavior of phthalocyanine derivatives doped in a polymer optical fibers core
Takahiro Shigeyama; Chie Hirose; Rei Furukawa
Oral presentation, English, 第70回高分子学会年次大会, 高分子学会, オンライン開催, https://spsj.or.jp/nenkai/70nenkai/, Domestic conference
27 May 2021

Mode-dependent polarization analysis of plastic optical fibers with birefringence-reduce core
Shingo Sode; Hayato Yamazaki; Keigo Uzawa; Rei Furukawa
Oral presentation, English, 第70回高分子学会年次大会, 高分子学会, オンライン開催, https://spsj.or.jp/nenkai/70nenkai/, Domestic conference
27 May 2021

CO2 Detection Using an Ionic Liquid-Core Fiber-Optic Structure and Material Optimization Using Machine Learning
M. Okura; H. Takana; X. Wang; Y. Huang; F. Ohuchi; R. Furukawa
Oral presentation, English, Seventeenth International Conference on Flow Dynamics (ICFD2020), Invited, 東北大学流体科学研究所, オンライン開催, http://www.ifs.tohoku.ac.jp/icfd2020/program/PROGRAM(ICFD2020).pdf, International conference
28 Oct. 2020

イオン液体を用いた導波型二酸化炭素センサー
大倉 美紅; 古川 怜; 大内 二三夫; 高奈 秀匡
Oral presentation, Japanese, 第69回高分子学会年次大会, 高分子学会, 新型コロナウィルスの影響で予稿集のみ発行, https://member.spsj.or.jp/convention/spsj2020/index.php, Domestic conference
27 May 2020

応力発光体SrAl2O4:Euのコアクラッド構造における拡散
吉田 賢志; 古川 怜
Oral presentation, Japanese, 第69回高分子学会年次大会, 高分子学会, 新型コロナウィルスの影響で予稿集のみ発行, https://member.spsj.or.jp/convention/spsj2020/index.php, Domestic conference
27 May 2020

異なる分子異方性を持つ二色性色素を添加したポリマー光ファイバーの変形下での導波解析
鵜澤 圭吾; 矢野 賢太郎; 古川 怜
Oral presentation, Japanese, 第69回高分子学会年次大会, 高分子学会, 新型コロナウィルスの影響で予稿集のみ発行, https://member.spsj.or.jp/convention/spsj2020/index.php, Domestic conference
27 May 2020

Doped Polymer Optical Fiber for On-site Visualization
Rei Furukawa; Chie Hirose
Oral presentation, English, The 28th International Conference on Plastic Optical Fibers, International Cooperative of Plastic Optical Fibers, 慶應大学 藤原記念館, https://pof2019.org/, International conference
22 Nov. 2019

Preparation of Polymer Optical Fiber and Water Purification
G. Takahashi; H. Nagakawa; T. Sato; T. Ochiai; R. Furukawa; M. Nagata
Oral presentation, English, The 28th International Conference on Plastic Optical Fibers, International Cooperative of Plastic Optical Fibers, 慶應大学 藤原記念館, https://pof2019.org/, International conference
22 Nov. 2019

Polarization-Dependent Absorption of a Stressed Birefiringence-Reduced Polymer Optical Fiber Doped with Dichroic Dye
K. Uzawa; R. Furukawa; K. Yano
Poster presentation, English, The 28th International Conference on Plastic Optical Fibers, International Cooperative of Plastic Optical Fibers, 慶應大学 藤原記念館, https://pof2019.org/, International conference
21 Nov. 2019

Optical properties of 1-ethyl-3-methylimidazolium acetate before and after carbon dioxide exposure
Miku Okura; Rei Furukawa; Hidemasa Takana; Fumio Ohuchi
Oral presentation, English, Sixteenth International Conference on Flow Dynamics (ICFD2019), Invited, 東北大学流体科学研究所, 仙台国際センター, http://www.ifs.tohoku.ac.jp/icfd2019/index.html, International conference
07 Nov. 2019

散乱媒体としてのプラスチック光ファイバーとその応用性について
古川怜
Invited oral presentation, Japanese, 第3回 光材料・応用技術研究会, 一般財団法人光産業技術振興協会 光材料・応用技術研究会, 東レ総合研修センター, http://www.oitda.or.jp/main/study/omat/19-3program_r3.pdf, Domestic conference
07 Nov. 2019

昨今の土木需要とプラスチック光ファイバーセンシング
古川怜
Invited oral presentation, Japanese, 第２０回 ＵＥＣアライアンスセンターＩＣＴワークショップ, Invited, UECアライアンスセンター, 電気通信大学 100周年記念ホール（UECアライアンスセンター１階）, Domestic conference
24 Oct. 2019

Doped organic optical fibers for strain Sensing
Rei Furukawa; Nobuko Fukuda; Takafumi Sassa; Kentaro Yano; Morio Nagata; Tsuyoshi Ochiai
Oral presentation, English, JISSE-16 Satellite Meeting in Honor of the 75th Birthday of Prof. Minoru Taya Symposium on bioinspired design of advanced materials, 先端材料技術協会, Morito Memorial Hall, Tokyo University of Science, Japan, http://www.sampejapan.gr.jp/jisse/jisse16sat/index.html, International conference
11 Oct. 2019

Stress-induced absorption of a birefringence-reduced polymer optical fiber with doped core
Keigo Uzawa
Oral presentation, English, 10th International Conference on Molecular Electronics & BioElectronics, 応用物理学会, Nara Kasugano Int;. Forum, Nara, Japan, http://www.mbe.jp/link-General.html, International conference
27 Jun. 2019

Waveguide optimization and its sensor evaluation of a doped polymer optical fiber designed for visual detection of stress
Chie Hirose
Poster presentation, English, 10th International Conference on Molecular Electronics & BioElectronics, 応用物理学会, Nara Kasugano Int;. Forum, Nara, Japan, http://www.mbe.jp/link-General.html, International conference
25 Jun. 2019

Polarization-dependent absorption of a stressed birefringence-reduced polymer optical fiber doped with dichroic dye
Keigo Uzawa; Rei Furukawa; Kentaro Yano
Oral presentation, English, 第68回高分子学会年次大会, 高分子学会, 大阪府立国際会議場, http://main.spsj.or.jp/nenkai.html, Domestic conference
30 May 2019

Polymer optical fiber using luminescent material SrAl2O4:Eu
Kenji Yoshita; Rei Furukawa
Oral presentation, English, 第68回高分子学会年次大会, 高分子学会, 大阪府立国際会議場, http://main.spsj.or.jp/nenkai.html, Domestic conference
30 May 2019

Optical properties of 1-ethyl-3-methylimidazolium acetate after CO2 absorption
Miku Okura; Rei Furukawa; Fumio Ohuchi; Hidemasa Takana
Oral presentation, English, 第68回高分子学会年次大会, 高分子学会, 大阪府立国際会議場, http://main.spsj.or.jp/nenkai.html, Domestic conference
29 May 2019

Doped POFによる省エネルギーひずみ可視化への検討
古川怜
Invited oral presentation, Japanese, OSV Seminar in Tokyo, Invited, OSV研究会, 株式会社建設技術研究所本社大会議室10F-A, http://www.osv.sakura.ne.jp/, Domestic conference
08 Mar. 2019

ひずみセンサーとしてのPOFの応用性
古川怜
Invited oral presentation, Japanese, 第70回PST-net招待講演会, Invited, PST-net, 機械振興会館 Ｂ3階6号室, http://www.pst-net7.com/index.html, Domestic conference
15 Feb. 2019

Strain sensing using radiative emission-absorption mechanism of doped polymeric optical fiber
R. Furukawa; S. Kamimura; C. Hirose; T. Sassa; N. Fukuda
Invited oral presentation, English, SPIE Photonics West 2019, Invited, SPIE, San Francisco, http://spie.org/, International conference
06 Feb. 2019

応力発光体を用いた光ファイバー型応力センサ
吉田賢志
Poster presentation, Japanese, 第89回武蔵野地区高分子懇話会, 高分子学会関東支部, 電気通信大学, https://spsj.or.jp/branch/kanto/, Domestic conference
15 Nov. 2018

イオン液体1-Ethyl-3-methylimidazolium acetate; [emim][Ac]の光学的特性解析
大倉美紅
Poster presentation, Japanese, 第89回武蔵野地区高分子懇話会, 高分子学会関東支部, 電気通信大学, https://spsj.or.jp/branch/kanto/, Domestic conference
15 Nov. 2018

非線形光学材料を用いた複屈折消去共重合体をコアとする ポリマー光ファイバー
鵜澤圭吾
Poster presentation, Japanese, 第89回武蔵野地区高分子懇話会, 高分子学会関東支部, 電気通信大学, https://spsj.or.jp/branch/kanto/, Domestic conference
15 Nov. 2018

Fabrication of cylindrical waveguiding structure using elastomers and investigation of dye doping
Chie Hirose
Oral presentation, English, The 18th International Symposium on Advanced Organic Photonics (ISAOP-18), International conference
26 Sep. 2018

Stress Sensing Using Luminescent Dye-doped POFs
Rei Furukawa; So Kamimura
Oral presentation, English, The 27th International Conference on Plastic Optical Fibers, International Cooperative of Plastic Optical Fibers, Seattle WA, https://pof2018.com/sessions/, International conference
05 Sep. 2018

Spectrum analysis of dichroic dye-doped polymer optical fiber
Takamichi Tozaki
Oral presentation, English, First International Conference on 4D Materials and Systems (4DMS), The Electrochemical Society, https://www.electrochem.org/4dms, International conference
26 Aug. 2018

Fabrication of cylindrical waveguiding structure using elastomers
Chie Hirose
Oral presentation, English, First International Conference on 4D Materials and Systems (4DMS), The Electrochemical Society, https://www.electrochem.org/4dms, International conference
26 Aug. 2018

発光体とポリマー光ファイバーを組み合わせたセンシング構想について
古川怜
Invited oral presentation, Japanese, 光ファイバセンシング振興協会 総会, Invited, 光ファイバセンシング振興協会, 本郷 東京, http://www.phosc.jp/, Domestic conference
23 Aug. 2018

Analysis on Cladding Intensity of Dye-doped Polymeric Fiber-Optic Strain Sensor for Visual Detection of Strain
Rei Furukawa; So Kamimura
Oral presentation, English, Advanced Photonics 2018 Congress, The Optical Society, Zurich Switzerland, https://www.osa.org/en-us/meetings/osa_meetings/advanced_photonics_congress/, International conference
02 Jul. 2018

Waveguiding analysis of birefringence-reduced polymeric optical fiber using dichroic dye
Takamichi Tozaki; Rei Furukawa; Daichi Mizorogi; Kentaro Yano
Poster presentation, English, The 7th Asia-Pacific Optical Sensors Conference, Kentaro Nakamura (Tokyo Institute of Technology, Japan), Matsue Japan, http://www.apos2018.org/dl/APOS2018_Program0427.pdf, International conference
29 May 2018

Sensitivity Control of Dye-Doped Polymeric Fiber-Optic Strain Sensor Using Radiative Emission-Absorption Mechanism
Rei Furukawa; So Kamimura
Oral presentation, English, 233rd ECS Meeting, The Electrochemical Society, Seattle WA, https://ecs.confex.com/ecs/233/meetingapp.cgi/Paper/110426, International conference
15 May 2018

Selective Immobilization of Bacterial Light-Harvesting Proteins and Its Photoelectric Response
Rei Furukawa; Shunsuke Yajima; Masaharu Kondo; Kenji Nagashima; Morio Nagata; Takehisa Dewa; Mamoru Nango
Poster presentation, English, 2018 MRS Spring Meeting & Exhibit, Materials Research Society, Phoenix AZ, https://mrsspring2018.zerista.com/event/member/464951, International conference
03 Apr. 2018

エラストマー光ファイバーの実現へ向けた材料探索及び試作
廣瀬 智絵; 古川 怜; 福田 伸子; 佐々 高史
Oral presentation, Japanese, The 65th JSAP Spring Meeting, 2018, 応用物理学会, 早稲田大学, https://confit.atlas.jp/guide/event/jsap2018s/subject/20p-A204-5/detail?lang=ja, Domestic conference
29 Mar. 2018

ひずみ「見える化」へ向けたポリマー光ファイバーセンサー
古川怜; 上村創; 福田伸子; 佐々高史
Invited oral presentation, Japanese, 有機エレクトロニクス研究会 (OME), Invited, THE INSTITUTE OF ELECTRONICS, INFORMATION AND COMMUNICATION ENGINEERS, 東京農工大学小金井キャンパス, Domestic conference
22 Feb. 2018

Stress sensor based on radiative emission-absorption mechanism using dye-doped polymer optical fiber
R. Furukawa; S. Kamimura
Invited oral presentation, English, The 17th International Symposium on Advanced Organic Photonics (ISAOP-17), Invited, Bin Cai, University of Shanghai for Science and Technology, International conference
11 Oct. 2017

Stress Detection Using Polymer Optical Fiber with FRET Pair Dyes
R. Furukawa; S. Kamimura
Oral presentation, English, 232nd ECS Meeting, The Electrochemical Society, National Harbor, MD (Gaylord National Resort and Convention Center), http://www.electrochem.org/232, International conference
04 Oct. 2017

Waveguiding analysis of polymer optical fiber using dichroic dye
Takamichi Tozaki; Rei Furukawa; Daichi Mizorogi; Kentaro Yano
Oral presentation, English, 第66回高分子討論会, 愛媛大学 城北キャンパス, http://main.spsj.or.jp/tohron/66tohron/program.html, International conference
21 Sep. 2017

ドナー/アクセプタ蛍光体添加ポリマー光ファイバーの出射 光スペクトル解析
上村創; 古川怜
Oral presentation, Japanese, 第66回高分子討論会, 愛媛大学 城北キャンパス, http://main.spsj.or.jp/tohron/66tohron/program.html, Domestic conference
20 Sep. 2017

Terpolymer-based polymer optical fiber for multimodal polarization-maintaining
溝呂木 大地; 二瓶 栄輔; 古川 怜
Poster presentation, English, JSAP-OSA Joint Symposia 2017, Fukuoka Convention Center, https://confit.atlas.jp/guide/event/jsap2017a/top, Domestic conference
08 Sep. 2017

Copolymer-based polymer optical fiber for multimodal polarization-maintaining
Daichi Mizorogi; Eisuke Nihei; Rei Furukawa
Oral presentation, English, The 11th SPSJ International Polymer Conference (IPC 2016), 高分子学会, 福岡コンベンションセンター, http://main.spsj.or.jp/ipc2016/, International conference
16 Dec. 2016

Inter-core/cladding boundary light exchange of dye-doped polymer optical fiber
So Kamimura; Rei Furukawa
Oral presentation, English, The 11th SPSJ International Polymer Conference (IPC 2016), 高分子学会, 福岡コンベンションセンター, http://main.spsj.or.jp/ipc2016/, International conference
14 Dec. 2016

Increased Light Absorption in Dye Sensitized Solar Cells with Light Harvesting Dye
武隈侑也; 落合剛; 古川怜; 永田衞男
Oral presentation, English, PRiME2016, 電気化学会, ホノルル, International conference
02 Oct. 2016

Polymer Optical Fiber for Visual Detection of Strain
Rei Furukawa; So Kamimura
Invited oral presentation, English, ISAOP-16 (The 16th International Symposium on Advanced Organic Photonics), Invited, Shiinoki Cultural Complex, Kanazawa, Japan, International conference
17 Sep. 2016

複屈折相殺効果のある三元共重合体を使ったポリマー光ファイバーの作製
溝呂木 大地; 二瓶 栄輔; 古川 怜
Poster presentation, Japanese, 第77回応用物理学会秋季学術講演会, 朱鷺メッセ, Domestic conference
16 Sep. 2016

蛍光体添加ポリマー光ファイバーのコア/クラッド境 界における光エネルギー授受の解析
上村創; 古川怜
Oral presentation, Japanese, 第65回高分子討論会, 神奈川大学 横浜キャンパス, Domestic conference
15 Sep. 2016

"Intrinsic robustness of fiber misaligned connections and reflection noise in plastic optical fiber links for cost-effective radio-over-fiber systems
Y. Matsumoto; M. Matsuura; R. Furukawa; A. Inoue; Y. Koike
Oral presentation, English, 41st The Optical Fiber Communication Conference and Exposition (OFC 2016), Anaheim, USA, International conference
Mar. 2016

Intrinsic Robustness of Fiber Misaligned Connections and Reflection Noise in Plastic Optical Fiber Links for Cost-Effective Radio-Over-Fiber Systems
Yuki Matsumoto; Motoharu Matsuura; Rei Furukawa; Azusa Inoue; Yasuhiro Koike
English, 2016 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXHIBITION (OFC), IEEE, We evaluate and compare radio-over-fiber transmission performances in terms of fiber misaligned connection and reflection noise in silica multimode fibers and plastic optical fibers (POFs). The results show that POFs have much higher transmission performances.
2016
2016 2016

Multimodal Phase Control Using Birefringence-Reduced Copolymer Optical Fiber
R. Furukawa; A. Tagaya; Y. Koike
Invited oral presentation, English, The 14th International Symposium on Advanced Organic Photonics (ISAOP-14), Invited, International conference
Nov. 2014

Stress-induced light leakage of Rhodamine 6G doped polymer optical fiber
R. Furukawa; D. Mizorogi; K. Tsukada; E. Nihei; M. Matsuura; A. Inoue; A. Tagaya; Y. Koike
Oral presentation, English, 23rd International Conference on Plastic Optical Fibers (POF 2014), Kanagawa, Japan, International conference
Oct. 2014

Launching condition dependence of noise reduction effect in radio over fiber systems with graded-index plastic optical fibers
A. Inoue; R. Furukawa; M. Matsuura; Y. Koike
Oral presentation, English, 23rd International Conference on Plastic Optical Fibers (POF 2014), Kanagawa, Japan, International conference
Oct. 2014

Modal noise impact in plastic optical fiber for radio-over-fiber systems
M. Matsuura; R. Furukawa; A. Inoue; Y. Koike
Poster presentation, English, 39th European Conference and Exhibition on Optical Communication (ECOC 2013), London, UK, International conference
Sep. 2013

Significant noise reduction in multimode fiber links using graded-index plastic optical fiber with microscopic heterogeneous core
A. Inoue; R. Furukawa; M. Matsuura; Y. Koike
Poster presentation, English, 39th European Conference and Exhibition on Optical Communication (ECOC 2013), London, UK, International conference
Sep. 2013

Significant noise reduction for radio over fiber using microscopically heterogeneous plastic optical fiber
A. Inoue; R. Furukawa; M. Matsuura; Y. Koike
Oral presentation, English, The 22nd International Conference on Plastic Optical Fibers (POF 2013), Rio de Janeiro, Brazil, International conference
Sep. 2013

Immobilization of bacterial light-harvesting 1, 2 complexes and reaction center on a gold electrode and its photoelectric conversion performance
Furukawa; M. Kondo; S. Yajima; K. Harada; K. V; P. Nagashima; M Nagata; K. Iida; T. Dewa; M. Nango; H. Hashimoto
Oral presentation, English, JSAP (The Japan Society of Applied Physics)-MRS (Materials Research Society) Joint Symposia, Kyoto, Japan, International conference
Sep. 2013

Photoelastic analysis of compressed polarization-maintaining polymer optical fiber
R. A. Furukawa; A. Tagaya; Y. Koike
Oral presentation, English, The 9th SPSJ International Polymer Conference, Kobe, Japan, International conference
Dec. 2012

Fluorescence Analysis of Micro-patterned Bacterial Light-harvesting 2 Complexes on a Gold Surface
R. A. Furukawa; M. Kondo; S. Yajima; S. Sakai; K. Iida; T. Dewa; K. Shimada; K. V; P. Nagashima; H. Hashimoto; M. Nango
Oral presentation, English, JSAP (The Japan Society of Applied Physics)-OSA (The Optical Society of America) Joint Symposia, Matsuyama, Japan, International conference
Sep. 2012

Characterization of fluorescence resonance energy transfer of a nanopatterned fluorophore doped polymer film fabricated using nanoimprint lithography
R. Furukawa
Oral presentation, English, 2011 SPIE Photonics West, International conference
Jan. 2011

Fluorescence of Two-dimensional Patterned Photosynthetic Proteins onto Gold surface
R. A. Furukawa; S. Yajima; S. Nozaki; T. Dewa; M. Nango
Oral presentation, English, 2010 MRS (Materials Research Society) Fall Meeting, Soft Matter, Biological Materials and Biomedical Materials—Synthesis, Characterization and Applications, International conference
Dec. 2010

Pressure Monitoring System Using a Multimode Polarization-Maintaining POF
A. Furukawa; A. Tagaya; Y. Koike
Oral presentation, English, 19th International Conference of Plastic Optical Fibe, International conference
Oct. 2010

Mode-selective Extinction Ratio Measurement of a Polarization-Maintaining Graded Index Plastic Optical Fiber Based on a Poly-(Methylmethacrylate/Benzylmethacrylate) Copolymer
R. A. Furukawa; A. Tagaya; Y. Koike
Oral presentation, English, 17th International Conference of Plastic Optical Fiber, Santa Clara, USA, International conference
Aug. 2008

低複屈折性グレーデッド型プラスチック光フ ァイバの偏波保持原理の解明
Oral presentation, Japanese, 第 57 回高分子学会年次大会, パシフィコ横浜(横浜), Domestic conference
May 2008

Design of a polarization maintaining graded index plastic optical fiber by random co-polymerization
R. A. Furukawa; A. Tagaya; S. Iwata; Y. Koike
Oral presentation, English, 16th International Conference of Plastic Optical Fiber, Turin, Italy, International conference
Sep. 2007

Design of an Passive-Matrix Smart Window by the Conductive Polymer Electrochromics
R. Furukawa; C. Xu; M. Taya
Invited oral presentation, English, Puget Sound Chapter ASMI (The Materials Information Society) Meeting, Invited, Seattle, USA, International conference
Apr. 2006

Advanced Engineering Science Ⅰ（Polymer Photonics）
Present
The University of Electro-Communications

環境材料学特論
Present
電気通信大学

電子工学実験第二
Present
電気通信大学

複素関数論
Present
電気通信大学

複素関数論
電気通信大学

工業化学特別講義
東京理科大学

工業化学特別講義
東京理科大学

基盤理工学専攻基礎
The University of Electro-Communications

基盤理工学専攻基礎
電気通信大学

電子工学実験第一（木曜）
The University of Electro-Communications

電子工学実験第一（木曜）
電気通信大学

総合コミュニケーション科学
The University of Electro-Communications

総合コミュニケーション科学
電気通信大学

現代化学
The University of Electro-Communications

電子情報通信学会

The Society of Polymer Science, Japan

The Electrochemical Society

SPIE

応用物理学会

ポリマー光ファイバーを担体としたカーボンマイクロコイルのらせん軸配向
古川 怜
日本学術振興会, 科学研究費助成事業, 電気通信大学, 基盤研究(C), 24K08073
Apr. 2024 - Mar. 2027

マイクロメカニックスによるポリマー光ファイバー内の針状ドーパントの配向解析
古川怜
複屈折消去性ポリマーをコアとする光ファイバーは、内部に光応答性の介在物を分散させると、その介在物の配向状態を光ファイバーから出てくる光によって推定することができる。この効果は、メートル単位で応力を監視するのに有効であるため、 次世代の防災分野に適用が期待される技術であるが、センサー感度に基づく材料設計に指針を与えるモデルの構築が必須である。そこで本課題では、光ファイバーのような円断面のひも状試料について、押しつぶしや曲げなどの「軸のある応力」が加られた際の介在物の配向モデルの構築を行う。濃度や異方性の異なる介在物を分散させた光ファイバーの光学測定結果用いて、構築したモデルの妥当性を判断する。
01 Apr. 2020 - 31 Mar. 2022

ゼロ複屈折性コア光ファイバーのセンサー応用へ向けたドーパント分子の配向解析
古川怜
Mar. 2020 - 31 Mar. 2021

複屈折消去材料の開発によるコア径に制限の無い偏波保持光ファイバーの実現
古川怜
Principal investigator
01 Apr. 2016 - 31 Mar. 2020

侵入車両の検知へ向けた色素添加ポリマー光ファイバーセンシングの初期可能性検討
古川怜
中日本ハイウェイ・メンテナンス名古屋株式会社, Principal investigator
01 Apr. 2019 - 31 Oct. 2019

防災のための高耐久二色性色素を使ったポリマー光ファイバー応力方位検知
02 Oct. 2017 - 30 Sep. 2018

仮設構造物への光ファイバーひずみセンサー応用についての可能性検討
古川怜
古久根建設(株)、(株)キャンパスクリエイト, Principal investigator
01 Dec. 2017 - 31 Mar. 2018

シールドトンネルの平常時のモニタリングおよび掘削時の安全管理へ向けたセグメント組込型有機導波路の提案
古川怜
国土交通省, 国土交通省交通運輸技術開発推進制度, Principal investigator
14 Jul. 2017 - 31 Mar. 2018

シールドトンネルの平常時のモニタリングおよび掘削時の安全管理へ向けたセグメント組込型有機導波路の提案
古川怜
国土交通省, 国土交通省交通運輸技術開発推進制度, Principal investigator
Jun. 2017 - 31 Mar. 2018

シールドトンネルの平常時のモニタリングおよび掘削時の安全管理へ向けたセグメント組込型有機導波路の提案
古川怜
国土交通省, 国土交通省交通運輸技術開発推進制度, Principal investigator
Jun. 2016 - 31 Mar. 2017

建造物の老朽化管理および災害感知のための高分子光ファイバー応力センサーの開発
古川怜
日立製作所, 研究助成, Principal investigator
2013 - 31 Mar. 2017

高分子光ファイバーのフォトルミネッセンスを利用した応力センサーの開発
古川怜
Principal investigator
01 Apr. 2014 - 31 Mar. 2016

光ひずみ検知センサー、ひずみ計測システム
Patent right, 特願2021-055118, Date applied: 29 Mar. 2021, 古川 怜

光導波路及びその製造方法、リアクター、光導波路用プリフォーム、光導波路用中空管
Patent right, 古川怜, 特願2017-018882, Date applied: 03 Feb. 2017, The University of Electro-Communications, 特許第6850473号, Date issued: 10 Mar. 2021

応力センサ
Patent right, 古川怜, 特願2017-548817, Date applied: 02 Nov. 2016, The University of Electro-Communications, 特許第6712391, Date issued: 03 Jun. 2020

応力センサ，応力センサシステム
Patent right, 古川怜, PCT/JP2016/059673, Date applied: 25 Mar. 2016, 国立大学法人電気通信大学, 6573405, Date issued: 23 Aug. 2019

光ファイバひずみゲージ，光ファイバひずみセンサ ，および光ファイバひずみセンシングシステム
Patent right, 佐久間広, 貴, 金子浩, 樹, 松森正樹, 古川怜, 特願2014-204513, Date applied: 03 Oct. 2014, 株式会社日立製作所，国立大学法人電気通信大学, 6450132, Date issued: 14 Dec. 2018

応力センサ
Patent right, 古川怜, 特願2015-216995, Date applied: 04 Nov. 2015, 国立大学法人電気通信大学

光導波路およびこれを用いた応力センサ並びに応力センサシステム
Patent right, 古川怜, 特願2015-065790, Date applied: 27 Mar. 2015, 国立大学法人電気通信大学