Journal Papers

FY2016 (total 4, including 4 peer-reviewed papers)

1
Y. Matsumoto, M. Matsuura, R. Furukawa, A. Inoue, and Y. Koike,
"Observation of Intrinsic Tolerances to Modal and Reflection Noises in Plastic Optical Fiber Links for Radio-over-Multimode Fiber Systems," Optics Letters, 2016.
2
I. Parola, M. A. Illarramendi, J. Arrue, I. Ayesta, F. Jiménez, J. Zubia, A. Tagaya, and Y. Koike,
"Characterization of the Optical Gain in Doped Polymer Optical Fibres," Journal of Luminescence, Vol. 177, pp. 1-8, 2016.
3
K. Minakawa, K. Koike, N. Hayashi, Y. Koike, Y. Mizuno and K. Nakamura,
"Dependence of Brillouin Frequency Shift on Water Absorption Ratio in Polymer Optical Fibers," J. Appl. Phys. Vol. 119, pp. 223102, 2016.
4
A. Inoue and Y. Koike,
"Misalignment Tolerance of Pluggable Ballpoint-Pen Interconnect of Graded-Index Plastic Optical Fiber for 4K/8K UHD Display," IEICE TRANS. Electron., Invited paper, Vol. E99-C, No. 11, pp. 1271-1276, 2016.

FY2015 (total 5, including 5 peer-reviewed papers)

1
K. Minakawa, K. Koike, Q. Du, N. Hayashi, Y. Koike, Y. Mizuno, and K. Nakamura,
"Temperature Dependence of Brillouin Frequency Shift in Polymers Controlled by Plasticization Effect," Journal of Applied Physics, Vol. 117, Issue 14, 144505-1/5, 2015.
2
A. Inoue and Y. Koike,
"High-Speed Graded-Index Plastic Optical Fibers and their Simple Interconnects for 4K/8K Video Transmission," Journal of Lightwave Technology, Vol. 34, No. 6, 2016.
3
M. Shikanai, A. Tagaya, and Y. Koike,
"Temperature-Independent Zero-Birefringence Polymer for Liquid Crystal Displays," Applied Physics Letters, Vol. 108, Issue 13, 131902-1/4, 2016.
4
K. Mochizuki, K. Oosumi, F. Koizumi, Y. Shinohara, A. Tagaya, and Y. Koike,
"Distribution Angle Control of a Light-Emitting Diode Downlight Lens with High Color Uniformity Using a Scattering Polymer," Optical Review, Vol. 22, pp. 422-426, 2015.
5
M. Fang, Y. Okamoto, Y. Koike. Z. He, and T. C. Merkel,
"Gas Separation Membranes Prepared with Copolymers of Perfluoro(2-Methylene-4,5-Dimethyl-1,3-Dioxlane) and Chlorotrifluoroethylene," Journal of Fluorine Chemistry, Vol. 188, pp. 18-22, 2016.

FY2014 (total 13, including 13 peer-reviewed papers)

1
K. Koike, T. Araki, and Y. Koike,
" "Influence of Dielectric Fluctuation on Light-Scattering Properties of Random Copolymers in Bulk," Polymer, Vol. 55, No. 11, pp. 2697-2703, 2014.
2
K. Minakawa, K. Koike, N. Hayashi, Y. Koike, Y. Mizuno, and K. Nakamura,
"Dependece of Brillouin Frequency Shift on Temperature in Poly(pentafluorostyrene)-Based Polymer Optical Fibers Estimated by Acoustic Velocity Measurement," IEICE Electronic Express, Vol. 11, No. 10, pp. 1-7, 2014.
3
A. Inoue, R. Furukawa, M. Matsuura, and Y. Koike,
"Reflection Noise Reduction Effect of Graded-Index Plastic Optical Fiber in Multimode Fiber Link," Optics Letters, Vol. 39, No. 12, pp. 3662-3665, 2014.
4
Y. Shitanoki, S. J. Bennison, and Y. Koike,
"A Rational Strength Prediction Approach to the Design of Double-glass Photovoltaic Modules," IEEE Journal of Photovoltaics, Vol. 4, No. 4, pp. 1071-1078, 2014.
5
Y. Shitanoki, S. J. Bennison, and Y. Koike,
"A Practical, Nondestructive Method to Determine the Shear Relaxation Modulus," Polymer Testing, Vol. 37, pp. 59-67, 2014.
6
H. Yoshida, R. Nakao, Y. Masabe, K. Koike, and Y. Koike,
"Effect of Cladding-Layer Glass Transition Temperature on Thermal Resistance of Graded-Index Plastic Optical Fibers," Polymer Journal, Vol. 46, pp. 823-82, 2014.
7
Y. Shitanoki, S. J. Bennison, and Y. Koike,
"Analytic Models of a Thin Glass-Polymer Laminate and Development of a Rational Engineering Design Methodology," International Journal of Applied Mechanics, Vol. 81, Issue 12, 121009-1/7, 2014.
8
Y. Okamoto, H. Zhang, F. Mikes, Y. Koike, Z. He, and T. C. Merkel,
"New Perfluoro-Dioxolane-Based Membranes for Gas Separations," Journal of Membrane Science, Vol. 471, pp. 412-419, 2014.
9
K. Koike, T. Araki, and Y. Koike,
"A Highly Transparent and Thermally Stable Copolymer of 1-Adamantyl Methacrylate and Styrene," Polymer International, Vol. 64, Issue 2, pp. 188-195, 2015.
10
K. Koike, A. Suzuki, K. Makino, and Y. Koike,
"Effects of Para-Fluorine Substituent of Polystyrene on Gradient-Index Fiber-Optic Properties," Optical Materials, Vol. 39, pp.143-147, 2015.
11
S. Beppu, H. Hotta, H. Shafiee, A. Tagaya, and Y. Koike,
"Investigation of optical and thermal properties of N-(alkyl-substituted) maleimides for use in zero-zero-birefringence polymer," Applied Optics, Vol. 54, Issue 4, pp. 779-788, 2015.
12
H. Shafiee, S. Beppu, S. Iwasaki, A. Tagaya, and Y. Koike,
"Mechanisms of Orientational and Photoelastic Birefringence Generation of Methacrylates for the Design of Zero-Zero-Birefringence Polymers," Polymer Engineering & Science, Vol. 55, Issue 6, pp. 1330-1338, 2015.
13
Y. Shitanoki, S. J. Bennison, and Y. Koike,
"Structural Behavior Thin Glass Ionomer Laminates with Optimized Specific Strength and Stiffness," Composite Structures, Vol. 125, pp. 615-620, 2015.
The following published papers are also listed as accepted papers in the year before.
1
T. Toma, H. Takizuka, T. Torikai, H. Suzuki, T. Ogi, and Y. Koike,
"Development of a Household High-Definition Video Transmission System Based on Ballpoint-Pen Technology, Synthesiology, Vol. 7, No. 2, pp. 118-128, 2014.
2
S. Beppu, S. Iwasaki, F. Shafiee, A. Tagaya, and Y. Koike,,
"Design and Synthesis of Zero-Zero-Birefringence Polymers Using N-Methylmaleimide,"
Journal of Applied Polymer Science, Vol. 131, No. 12, pp. 40423-1/9, 2014.

FY2013 (total 17, including 17 peer-reviewed papers)

1
A. Takahashi, A. Inoue, T. Sassa, and Y. Koike,
"Fluorination Effects on Attenuation Spectra of Plastic Optical Fiber Core Materials,"
Optical Materials Express, Vol. 3, No. 5, pp. 658-663, 2013.
2
H. Teng, Z. Wan, Y. Koike, and Y. Okamoto,
"Thermal and Optical Properties of Highly Fluorinated Copolymers of Methacrylates,"
Polymers for Advanced Technologies, Vol. 24, No. 5, pp. 520-523, 2013.
3
K. Makino, Y. Akimoto, K. Koike, A. Kondo, A. Inoue, and Y. Koike,
"Low Loss and High Bandwidth Polystyrene-based Graded Index Polymer Optical Fiber,"
Journal of Lightwave Technology, Vol. 31, No. 14, pp. 2407-2412, 2013.
4
A. Inoue, T. Sassa, R. Furukawa, K. Makino, A. Kondo, and Y. Koike,
"Efficient Group Delay Averaging in Graded-Index Plastic Optical Fiber with Microscopic Heterogeneous Core,"
Optics Express, Vol. 21, No. 14, pp. 17379-17385, 2013.
5
N. Schlepple, M. Nishigaki, H. Uemura, H. Furuyama, Y. Sugizaki, H. Shibata, and Y. Koike,
"4A x 10 Gbit/s Full-Duplex Optical Link with Compact Optical Sub-Assemblies and Thin GI 50/125 Plastic Optical Fibre Ribbon,"
Electronics Letters, Vol. 49, No. 13, pp. 835-836, 2013.
6
A. Sengupta, Y. Koike, and Y. Okamoto,
"Investigation of the Physical Properties of Poly(ortho- and para-trifluoromethoxy styrenes),"
Macromolecular Chemistry and Physics, Vol. 214, Issue 15, pp. 1734-1737, 2013.
7
T. Toma, S. Suzuki, H. Tokura, Y. Inaba, T. Ogi, and Y. Koike, "Evaluation of 4K Ultra Definition Video for Telemedicine - Possibility of teledermatology Applications -
Japanese Journal of Telemedicine and Telecare, Vol. 9, No. 2, pp. 66-73, 2013.
8
M. A. Illarramendi, J. Arrue, I. Ayesta, F. Jiménez, J. Zubia, I. Bikandi, A. Tagaya, and Y. Koike,
"Amplified Spontaneous Emission in Graded-Index Polymer Optical Fibers: Theory and Experiment,"
Optics Express, Vol. 21, No. 20, pp. 24254-24266, 2013.
9
T. Toma, H. Asada, T. Ogi, and Y. Koike,
"High-Speed Optical Home Network Using Graded Index Plastic Optical Fibers for a Smart House,"
Advances in Computer Science : an International Journal, Vol. 2, Issue 5, No. 6, pp. 141-149, 2013.
10
R. Furukawa, M. Nagata, K. Mishima, M. Matsuura, A. Inoue, A. Tagaya, and Y. Koike,
"Core stress Distribution of Phase Shifting Multimode Polymer Optical Fiber,"
Applied Physics Letters, Vol. 103, No. 21, 213301-1/4, 2013.
11
K. Koike, F. Mikes, H. Zhang, Y. Koike, and Y. Okamoto,
"Synthesis and Characterization of Copolymers of Perfluoro(2-methylene-4,5-dimethyl-1,3-dioxolane) and Perfluoro(2-methylene-1,3-dioxolane),"
Journal of Fluorine Chemistry, Vol. 156, pp. 198-202, 2013.
12
T. Toma, H. Takizuka, T. Torikai, H. Suzuki, T. Ogi, and Y. Koike,
"Development of a Household High-Definition Video Transmission System Based on Ballpoint-Pen Technology," Synthesiology, accepted in Nov. 2013.
13
S. Beppu, S. Iwasaki, F. Shafiee, A. Tagaya, and Y. Koike,
"Design and Synthesis of Zero-Zero-Birefringence Polymers Using N-Methylmaleimide,"
Journal of Applied Polymer Science, accepted on Jan. 14, 2014.
14
A. Sengupta, K. Koike, Y. Koike, and Y. Okamoto,
"New Insights into Dopant Design for Graded-Index Plastic Optical Fibers for Transmission at 850 nm,"
Optical Materials, Vol. 36, No. 4, pp. 782-786, 2014.
15
K. Koike, H. Teng, Y. Koike, and Y. Okamoto,
"Effect of Dopant Structure on the Refractive Index and Glass Transition Temperature of Polymeric Fiber-Optic Materials,"
Polymers for Advanced Technologies, Vol. 25, No. 2, pp. 204-210, 2014.
16
K. Koike, Q. Du, S. Nishino, and Y. Koike,
"Light Scattering of Ideal Random Copolymers in Bulk,"
Polymer, Vol. 55, No. 3, pp. 878-885, 2014.
17
M. Matsuura, R. Furukawa, Y. Matsumoto, A. Inoue, and Y. Koike,
"Evaluation of Modal Noise in Graded-Index Silica and Plastic Optical Fiber Links for Radio-over-Multimode Fiber Systems,"
Optics Express, Vol. 22, No. 6, pp. 6562-8, 2014.
The following published papers are also listed as accepted papers in the year before.
1
S. Iwasaki, Z. Sato, H. Shafiee, A. Tagaya, and Y. Koike,
"Design of Zero-Zero-Birefringence Polymers in Methacrylate Copolymer Systems Containing Trichloroethyl Methacrylate,"
Journal of Applied Polymer Science, Vol. 130, No. 1, pp. 138-144, 2013.

FY2012 (total 12, including 12 peer-reviewed papers)

1
K. Makino, T. Kado, A. Inoue, and Y. Koike,
"Low Loss Graded Index Polymer Optical Fiber with High Stability under Damp Heat Conditions,"
Optics Express, vol. 20, no. 12, pp. 12893-12898, 2012.
2
L. Lou, A. Tagaya, Y. Ide, Y. Koike, and Y. Okamoto,
"Copolymers of Methyl Methacrylate with N-Trifluorophenyl Maleimides:High Glass Transition Temperature and Low Birefringence Polymers,"
Journal of Polymer Science Part A: Polymer Chemistry Journal, vol. 50, no. 17, pp. 3530-3536, 2012.
3
H. Ito, S. Yanai, S. Oda, A. Tagaya, and Y. Koike,
"Zero-Birefringence Pressure-Sensitive Adhesives,"
AIP Advances, vol. 2, no. 2, 022142-1/5, 2012.
4
A. Inoue, T. Sassa, K. Makino, A. Kondo, and Y. Koike,
"Intrinsic Transmission Bandwidths of Graded-Index Plastic Optical Fiber,"
Optics Letters, vol. 37, no. 13, pp. 2583-2585, 2012.
5
S. Iwasaki, Z. Sato, H. Shafiee, A. Tagaya, and Y. Koike,
"Design and Synthesis of Zero-Zero-Birefringence Polymers in a Quaternary Copolymerization System,"
Polymer, Vol. 53 pp. 3287-3296, 2012.
6
T. Kurashima, K. Sakuma, T. Arai, A. Tagaya, and Y. Koike,
"A Polarized Laser Backlight Using a Zero-Zero-Birefringence Polymer for Liquid Crystal Displays,"
Optical Review, Vol. 19, No. 6, pp. 415-418, 2012.
7
N. Schlepple, M. Nishigaki, H. Uemura, K. Obara, H. Furuyama, Y. Sugizaki, H. Shibata, and Y. Koike,
"40 Gbps High-Speed Link over Thin GI 50/125 Plastic Optical Fibers and Compact Optical Sub-Assembly,"
IEEE Photonics Technology Letters, Vol. 24, No.19, pp. 1670-1672, 2012.
8
F. Mikes, H. Teng, Y. Koike, and Y. Okamoto,
"Alternating Copolymers of Hexafluoroisobutylene with Vinyl Trifluoroacetate and Vinyl Pentafluorobenzoate,"
Journal of Polymer Science Part A, Polymer Chemistry, Vol. 50, No.22, pp. 4717-4720, 2012.
9
N. Schlepple, M. Nishigaki, H. Uemura, H. Furuyama, K. Obara, H. Furuyama, Y. Sugizaki, H. Shibata, and Y. Koike,
"Optoelectrical High-Speed HDMI Cable with Compact Optical Sub-Assembly and 4x3.4 Gb/s Plastic Optical Fiber Link,"
Electronics Letters, Vol.48, No.25, pp.1611-1613, 2012.
10
S. Iwasaki, Z. Sato, H. Shafiee, A. Tagaya, and Y. Koike,
"Design of Zero-Zero-Birefringence Polymers in Methacrylate Copolymer Systems Containing Trichloroethyl Methacrylate,"
Journal of Applied Polymer Science, published online, March 8, 2013.
11
B. Zhang, L. Li, F. Mikes, Y. Koike, Y. Okamoto, and P. L. Rinaldie,
"Multidimensional NMR Characterization of Perfluorinated Monomer and its Precursors,"
Journal of Fluorine Chemistry, Vol. 147, pp. 40-48, 2013.
12
J. Katsumata, T. Toma, and T. Ogi,
"Introduction of Doctor's Second Opinion and Preventive Critical Path based on Remote Chat Conference,"
Japanese Journal of Telemedicine and Telecare, Vol. 8, no. 1, pp. 2-7, 2012.
The following published papers are also listed as accepted papers in the year before.
1
R. Nakao, A. Kondo, and Y. Koike,
"Fabrication of High Glass Transition Temperature Graded-Index Plastic Optical Fiber: Part 2 - Fiber Fabrication and Characterizations,"
Journal of Lightwave Technology, vol. 30, no. 7, pp. 969-973, 2012.
2
A. Tagaya, L. Lou, Y. Ide, Y. Koike and Y. Okamoto,
"Improvement of the Physical Properties of Poly(Methyl Methacrylate) by Copolymerization with N-Pentafluorophenyl Maleimide; Zero-Orientational and Photoelastic Birefringence Polymers with High Glass Transition Temperatures,"
Science China Chemistry, vol. 55, no. 5, pp. 850-853, 2012.
3
Y. Mukawa, A. Kondo, and Y. Koike,
"Optimization of the Refractive Index Distribution of Graded-index Polymer Optical Fiber by the Diffusion-assisted Fabrication Process,"
Applied Physics Express, vol. 5, no. 4, 042501-1/3, 2012.
4
Y. Akimoto, M. Asai, K. Koike, K. Makino, and Y. Koike,
"Poly(styrene)-Based Graded-Index Plastic Optical Fiber for Home Networks,"
Optics Letters, vol. 37, no. 11, pp. 1853-1855, 2012.

FY2011 (total 10, including 10 peer-reviewed papers)

1
M. Asai, M. Shibayama, and Y. Koike,
"Common Origin of Dynamics Heterogeneity and Cooperatively Rearranging Region in Polymer Melts,"
Macromolecules, vol.44, no.16, pp6615-6624, 2011.
2
M. Asai, Y. Yamaki, S. Takahashi, and Y.Koike,
"High-Thermally Stable and High-bandwidth Graded Index Plastic Optical Fiber for the Vehicle Networks,"
Journal of Polymer Science Part B: Polymer Physics, accepted on July, 2011.
3
L. Lou, Y. Koike, and Y. Okamoto,
"A Novel Copolymer of Methyl Methacrylate with N-Pentafluorophenyl Maleimide:High Glass Transition Temperature and Highly Transparent Polymer,"
Polymer, vol. 52, no. 16, pp. 3560-3564, 2011.
4
A. Tagaya and Y. Koike,
"Compensation and Control of the Birefringence of Polymers for Photonics,"
Polymer Journal, vol. 44, no.4, pp. 306-314, 2012.
5
T. Kojo, A. Tagaya, and Y. Koike,
"Mechanism of Generation of Birefringence in Poly(Methyl Methacrylate/Styrene),"
Polymer Journal, vol. 44, no. 2, pp. 167-173, 2012.
6
R. Nakao, A. Kondo, and Y. Koike,
"Fabrication of High Glass Transition Temperature Graded-Index Plastic Optical Fiber: Part 1 - Material Preparation and Characterizations,"
Journal of Lightwave Technology, vol. 30, no. 2, pp. 247-251, 2012.
7
A. Tagaya, L. Lou, Y. Ide, Y. Koike and Y. Okamoto,
"Improvement of the Physical Properties of Poly(Methyl Methacrylate) by Copolymerization with N-Pentafluorophenyl Maleimide; Zero-Orientational and Photoelastic Birefringence Polymers with High Glass Transition Temperatures,"
Scinece China Chemistry, in press, 2012.
8
Y. Akimoto, M. Asai, K. Koike, K. Makino, and Y. Koike,
"Poly(styrene)-Based Graded-Index Plastic Optical Fiber for Home Networks,"
Optics Letters, in press, 2012.
9
R. Nakao, A. Kondo, and Y. Koike,
"Fabrication of High Glass Transition Temperature Graded-Index Plastic Optical Fiber: Part 2 - Fiber Fabrication and Characterizations,"
Journal of Lightwave Technology, accepted on Jan. 11, 2012.
10
Y. Mukawa, A. Kondo, and Y. Koike,
"Optimization of the Refractive Index Distribution of Graded-index Polymer Optical Fiber by the Diffusion-assisted Fabrication Process,"
Applied Physics Express, accepted on March 2, 2012.
The following published papers are also listed as accepted papers in the year before.
1
M. Asai, Y. Inuzuka, K. Koike, S. Takahashi, and Y. Koike,
"High-bandwidth Graded-Index Plastic Optical Fiber with Low-Attenuation, High-Bending Ability, and High-Thermal Stability for Home-Networks,"
Jounal of Lightwave Technology, vol. 29, no. 11, pp. 1620-1626, 2011.

FY2010 (total 1, including 1 peer-reviewed papers)

1
M. Asai, Y. Inuzuka, K. Koike, S. Takahashi, and Y. Koike,
"High-bandwidth Graded-Index Plastic Optical Fiber with Low-Attenuation, High-Bending Ability, and High-Thermal Stability for Home-Networks,"
Jounal of Lightwave Technology, accepted on March 15, 2011.

Apart from the above, the following papers are also research results accomplished in the FIRST Program, but acknowledgement was not mentioned in the publication.

Reference (total 10, including 10 peer-reviewed papers)
1
Y.Yamaki, M.Asai, S.Takahashi, and Y.Koike,
"Novel Dopant for Graded-Index Polymer Optical Fiber with High-Thermal Stability,"
Applied Physics Express , Volume 3, Issue 7, 071601-1/3, 2010.
2
L. Lou, Y. Koike, Y. Okamoto,
"Synthesis and Properties of Copolymers of Methyl Methacrylate with 2,3,4,5,6-Pentafluoro and 4-Trifluoromethyl 2,3,5,6-Tetrafluoro Styrenes: An Intrachain Interaction between Methyl Ester and Fluoro Aromatic Moieties,"
Journal of Polymer Science Part A: Polymer Chemistry, Vol. 48, Issue 22, pp. 4938-4942, 2010.
3
Y. Koike and K. Koike,
"Progress in Low-Loss and High-Bandwidth Plastic Optical Fibers,"
Journal of Polymer Science Part B: Polymer Physics, Volume 49, Issue 1, pp. 2-17, 2011.
4
H. Teng, L. Lou, K. Koike, Y. Koike, Y. Okamoto,
"Synthesis and Characterization of Trifluoromethyl Substituted Styrene Polymers and Copolymers with Methacrylates: Effects of Trifluoromethyl Substituent on Styrene,"
polymer, Volume 52, Issue 4, pp. 949-953, 2011.
5
M. Asai, Y. Mukawa, S.Takahashi, and Y. Koike,
"Methodological Approach to Control Refractive Index Profile of Graded-Index Polymer Optical Fiber,"
Industrial & Engineering Chemistry Research, Volume 50, Issue 7, pp. 3895-3899, 2011.
6
H. Shafiee, A. Tagaya, and Y. Koike,
"Design and Synthesis of a Zero-Photoelastic Birefringence Polymer with a High Glass-Transition Temperature by a Random Copolymerization Method,"
Polymer Journal (2011) Volume 43, pp306-312, 2011.
7
M. Asai, M. Awata, and Y. Koike,
"Effects of Rotation of Benzene Rings on Diffusion of Solvents in Polymer Melts,"
Industrial & Engineering Chemistry Research, Volume 50, Issue 6, pp. 3280-3286, 2011.
8
H. Shafiee, K. Shikama, A. Tagaya, F. Hardinghaus, T. Miyaji, K. Kohler, and Y. Koike,
"Control of the Birefringence Dispersion of an Optical Polymer by Doping with an Inorganic Crystal,"
Japanese Journal of Applied Physics, Volume 50, Issue 3, 032602-1/6, 2011.
9
D. Kobayashi, A. Tagaya, and Y. Koike,
"A High-Retardation Polymer Film for Viewing Liquid Crystal Displays through Polarized Sunglasses without Chromaticity Change in the Image,"
Japanese Journal of Applied Physics, Volume 50, Issue 4, 042602-1/6, 2011.
10
Mikes, J. Baldrian, H. Teng, Y. Koike, Y. Okamoto,
"Characterization and Properties of Semicrystalline and Amorphous Perfluoropolymer: poly(perfluoro-2-methylene-1,3-dioxolane),"
Polymers for Advanced Technologies, in press, 2011.