Prof. Takaaki Ishigure Profile

Prof. Takaaki Ishigure

Professor at Keio Univ

SPIE Involvement:

Conference Program Committee | Author

Publications (28)

Proceedings Article | 5 March 2022 Presentation + Paper

Single-mode polymer waveguide for fan-in/fan-out of multicore fiber by the mosquito method

Sho Yakabe, Takaaki Ishigure

Proceedings Volume 12007, 120070A (2022) https://doi.org/10.1117/12.2614365

KEYWORDS: Waveguides, Single mode fibers, Cladding, Polymers, Polymer multimode waveguides, Connectors, Optical fibers

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Proceedings Article | 9 March 2020 Presentation

Fabrication for polymer microchannels with circular cross-section using photo-curable PDMS (Conference Presentation)

Ryota Nakazawa, Takaaki Ishigure

Proceedings Volume 11235, 1123505 (2020) https://doi.org/10.1117/12.2545651

KEYWORDS: Blood vessels, Polymers, Waveguides, Hemodynamics, Blood, Polymer multimode waveguides, Cladding, Transparency

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Proceedings Article | 9 March 2020 Presentation

High-density optical module for on-board optical interconnects utilizing graded-index core polymer waveguide (Conference Presentation)

Naohiro Kohmu, Maho Ishii, Takaaki Ishigure

Proceedings Volume 11286, 112860J (2020) https://doi.org/10.1117/12.2544341

KEYWORDS: Polymer multimode waveguides, Polymers, Waveguides, Optical interconnects, Active optics, Optical fibers, Integrated optics, Connectors, Light, Lens design

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Proceedings Article | 23 February 2018 Paper

Precise core alignment in fabrication of polymer optical waveguides using the Mosquito method for three-dimensional optical circuits

Kumi Date, Takaaki Ishigure, Koji Fukagata

Proceedings Volume 10535, 105351Y (2018) https://doi.org/10.1117/12.2289206

KEYWORDS: Cladding, Waveguides, Polymer multimode waveguides, Polymers, Optical alignment, Device simulation, Liquids, Ultraviolet radiation, Optical circuits, Optical interconnects

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Proceedings Article | 30 January 2018 Paper

Design and fabrication of restricted mode launching device for high-speed multimode fiber link

Ryosuke Hatai, Takaaki Ishigure

Proceedings Volume 10560, 105600V (2018) https://doi.org/10.1117/12.2288847

KEYWORDS: Waveguides, Diffusion, Cladding, Vertical cavity surface emitting lasers, Single mode fibers, Polymers, Polymer multimode waveguides, Ultraviolet radiation, Multimode fibers, Digital micromirror devices

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Proceedings Article | 28 April 2017 Presentation

Design and fabrication for graded-index core tapered polymer waveguide for a coupler device of laser source and multimode fiber (Conference Presentation)

Hoshihiko Toda, Takaaki Ishigure

Proceedings Volume 10109, 1010906 (2017) https://doi.org/10.1117/12.2256022

KEYWORDS: Waveguides, Polymer multimode waveguides, Polymers, Laser sources, Multimode fibers, Light sources, Refractive index, Computing systems, Light, Sensors

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Proceedings Article | 28 April 2017 Presentation

Tapered graded-index core polymer waveguide for very short light path fabricated using the imprint method (Conference Presentation)

Kenji Katori, Takaaki Ishigure

Proceedings Volume 10107, 101070R (2017) https://doi.org/10.1117/12.2251738

KEYWORDS: Waveguides, Polymer multimode waveguides, Polymers, Optical interconnects, Clouds, Transceivers, Light scattering, Scattering, Interfaces, Light wave propagation

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Proceedings Article | 20 February 2017 Paper

Accurate core position control in polymer optical waveguides using the Mosquito method for three-dimensional optical wiring

Kumi Date, Takaaki Ishigure

Proceedings Volume 10109, 101090I (2017) https://doi.org/10.1117/12.2251076

KEYWORDS: Waveguides, Polymer multimode waveguides, Polymers, Liquids, Cladding, Optical components, Optical interconnects, Packaging, Ultraviolet radiation, Multilayers, Control systems

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Proceedings Article | 15 March 2016 Paper

Planar polymer and glass graded index waveguides for data center applications

Richard Pitwon, Akira Yamauchi, Lars Brusberg, Kai Wang, Takaaki Ishigure, Henning Schröder, Alex Worrall, Marcel Neitz

Proceedings Volume 9753, 97530I (2016) https://doi.org/10.1117/12.2212376

KEYWORDS: Waveguides, Glasses, Polymer multimode waveguides, Polymers, Data centers, Data storage, Optical circuits, Optical testing, Diffusion, Transceivers, Refractive index, Ions, Cladding

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Proceedings Article | 1 March 2016 Paper

Low-loss polymer optical waveguides with graded-index perfect circular cores for on-board interconnection

Koji Fukagata, Yuki Saito, Takaaki Ishigure

Proceedings Volume 9750, 975005 (2016) https://doi.org/10.1117/12.2212135

KEYWORDS: Waveguides, Polymer multimode waveguides, Optical interconnects, Optical properties, Ultraviolet radiation

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Proceedings Article | 13 March 2015 Paper

Multimode/single-mode polymer optical waveguide circuit for high-bandwidth-density on-board interconnects

Takaaki Ishigure

Proceedings Volume 9368, 936802 (2015) https://doi.org/10.1117/12.2076881

KEYWORDS: Waveguides, Polymers, Polymer multimode waveguides, Single mode fibers, Cladding, Optical interconnects, Silicon, Optical circuits, Optical alignment, Computing systems

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Proceedings Article | 27 February 2015 Paper

Bend insensitive graded index multimode polymer optical waveguides fabricated using the Mosquito method

Asami Takahashi, Takaaki Ishigure

Proceedings Volume 9366, 93660L (2015) https://doi.org/10.1117/12.2078880

KEYWORDS: Waveguides, Cladding, Polymer multimode waveguides, Polymers, Single mode fibers, Refractive index, Optical interconnects, Ultraviolet radiation, Photorefractive polymers, Power meters

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Proceedings Article | 27 February 2015 Paper

Polymer optical waveguide composed of europium-aluminum-acrylate composite core for compact optical amplifier and laser

Marina Mitani, Kenichi Yamashita, Toshimi Fukui, Takaaki Ishigure

Proceedings Volume 9365, 93650Q (2015) https://doi.org/10.1117/12.2078694

KEYWORDS: Waveguides, Polymers, Composites, Polymer multimode waveguides, Cladding, Optical amplifiers, Ions, Near field optics, Laser optics, Fiber amplifiers

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Proceedings Article | 27 February 2015 Paper

Fan-in/out polymer optical waveguide for a multicore fiber fabricated using the Mosquito method

D. Suganuma, T. Ishigure

Proceedings Volume 9366, 93660J (2015) https://doi.org/10.1117/12.2078586

KEYWORDS: Waveguides, Cladding, Optical alignment, Polymer multimode waveguides, Polymers, Polymer optical fibers, Optical components, Liquids, Multimode fibers, Fabrication

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Proceedings Article | 8 March 2014 Paper

Graded-index core polymer optical waveguide for high-bandwidth-density optical printed circuit boards: fabrication and characterization

Takaaki Ishigure

Proceedings Volume 8991, 899102 (2014) https://doi.org/10.1117/12.2037469

KEYWORDS: Waveguides, Polymers, Polymer multimode waveguides, Cladding, Optical printed circuit boards, Refractive index, Wave propagation, Light wave propagation, Optical interconnects, Fabrication

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Proceedings Article | 8 March 2014 Paper

Low-loss and low-crosstalk graded-index polymer optical waveguide circuit fabricated using an imprint method

Yohei Yamashita, Takaaki Ishigure

Proceedings Volume 8989, 89890V (2014) https://doi.org/10.1117/12.2038877

KEYWORDS: Waveguides, Polymer multimode waveguides, Polymers, Single mode fibers, Cladding, Ultraviolet radiation, Optical circuits, Near field, Capillaries, Double positive medium

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Proceedings Article | 8 March 2014 Paper

Inter-channel crosstalk in densely aligned multimode polymer parallel optical waveguides

Takuya Kudo, Takaaki Ishigure

Proceedings Volume 8989, 89890W (2014) https://doi.org/10.1117/12.2038878

KEYWORDS: Waveguides, Bridges, Polymer multimode waveguides, Polymers, Beam propagation method, Wave propagation, Refractive index, Optical interconnects, Near field optics, Estimation theory

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Proceedings Article | 8 March 2014 Paper

Pitch control of multi-channel graded-index core polymer waveguide for optical PCB using the Mosquito method

Daisuke Suganuma, Ryota Kinoshita, Takaaki Ishigure

Proceedings Volume 8991, 899119 (2014) https://doi.org/10.1117/12.2039105

KEYWORDS: Waveguides, Polymers, Polymer multimode waveguides, Cladding, Vertical cavity surface emitting lasers, Optical interconnects, Optical printed circuit boards, Ultraviolet radiation, Channel waveguides, Absorption

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Proceedings Article | 27 February 2013 Paper

Graded-index core polymer optical waveguide circuit fabricated using a microdispenser for high-density on-board optical interconnects

Kazutomo Soma, Takaaki Ishigure

Proceedings Volume 8630, 863005 (2013) https://doi.org/10.1117/12.2003354

KEYWORDS: Waveguides, Polymers, Polymer multimode waveguides, Cladding, Refractive index, Optical interconnects, Silicon, Polymer optical fibers, Ultraviolet radiation, Optical circuits

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Proceedings Article | 2 February 2012 Paper

Characterization and analysis of graded index optical waveguides for the realization of low-power, high-density, and high-speed optical link

Hsiang-Han Hsu, Takaaki Ishigure, Shigeru Nakagawa

Proceedings Volume 8267, 82670A (2012) https://doi.org/10.1117/12.906398

KEYWORDS: Waveguides, Geometrical optics, Near field optics, Refractive index, Vertical cavity surface emitting lasers, Diodes, Ray tracing, Dispersion, Wave propagation, Scattering

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Proceedings Article | 2 February 2012 Paper

Link power budget advantage in GI-core polymer optical waveguide link for optical printed circuit boards

Takaaki Ishigure, Sho Yakabe, Shigeru Nakagawa

Proceedings Volume 8267, 82670J (2012) https://doi.org/10.1117/12.907699

KEYWORDS: Waveguides, Polymers, Polymer multimode waveguides, Wave propagation, Vertical cavity surface emitting lasers, Tolerancing, Optical printed circuit boards, Optical interconnects, Refractive index, Single mode fibers

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Proceedings Article | 31 January 2012 Paper

Influence of core diameter and length of polymer optical fiber on Brillouin scattering properties

Yosuke Mizuno, Kentaro Nakamura, Takaaki Ishigure

Proceedings Volume 8351, 83510J (2012) https://doi.org/10.1117/12.916047

KEYWORDS: Scattering, Single mode fibers, Polymer optical fibers, Silica, Light scattering, Laser scattering, Temperature sensors, Optical fibers, Glasses, Temperature metrology

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Proceedings Article | 18 January 2011 Paper

Densely aligned graded-index multiple-core polymer optical waveguide: fabrication and inter-channel crosstalk property

Yosuke Nitta, Takaaki Ishigure, Kenshiro Matsuo, Yusuke Sugimori, Shin Morikawa

Proceedings Volume 7944, 79440O (2011) https://doi.org/10.1117/12.873997

KEYWORDS: Waveguides, Polymers, Polymer multimode waveguides, Wave propagation, Refractive index, Optical interconnects, Cladding, Scattering, Lithography, Geometrical optics

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Proceedings Article | 18 January 2011 Paper

Inter-channel crosstalk analysis for W-shaped and graded-index core polymer optical waveguides with ray tracing method

Keishiro Shitanda, Takaaki Ishigure, Hsiang-Han Hsu

Proceedings Volume 7944, 79440H (2011) https://doi.org/10.1117/12.873988

KEYWORDS: Waveguides, Refractive index, Polymers, Cladding, Polymer multimode waveguides, Wave propagation, Ray tracing, Light scattering, Optical interconnects, Scattering

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Proceedings Article | 5 October 1999 Paper

Recent progress of polymer optical fiber for high-speed data communication

Takaaki Ishigure, Yasuhiro Koike

Proceedings Volume 3799, (1999) https://doi.org/10.1117/12.363910

KEYWORDS: Phase only filters, Polymers, Signal attenuation, Polymethylmethacrylate, Digital micromirror devices, Multimode fibers, Polymer optical fibers, Silica, Data communications, Optical fibers

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Proceedings Article | 22 June 1998 Paper

High-speed plastic optical fibers and amplifiers

Takeyuki Kobayashi, Eisuke Nihei, Yasuhiro Koike, Takaaki Ishigure

Proceedings Volume 3419, 34190Z (1998) https://doi.org/10.1117/12.311020

KEYWORDS: Polymer optical fibers, Optical amplifiers, Phase only filters, Fiber amplifiers, Signal attenuation, Refractive index, Photorefractive polymers, Polymers, Humidity, Visible radiation

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Proceedings Article | 17 April 1998 Paper

High-bandwidth and high-thermal-stability graded-index polymer optical fiber

Takaaki Ishigure, Yasuhiro Koike, Masataka Sato, Eisuke Nihei

Proceedings Volume 3281, (1998) https://doi.org/10.1117/12.305442

KEYWORDS: Phase only filters, Refractive index, Signal attenuation, Polymers, Polymethylmethacrylate, Photorefractive polymers, Polymer optical fibers, Double positive medium, Humidity, Absorption

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Proceedings Article | 9 February 1993 Paper

High-bandwidth (2GHz km) low-loss (56dB/km) GI polymer optical fiber

Yasuhiro Koike, Takaaki Ishigure, Eisuke Nihei

Proceedings Volume 1799, (1993) https://doi.org/10.1117/12.141362

KEYWORDS: Phase only filters, Signal attenuation, Polymer optical fibers, Refractive index, Polymers, Local area networks, Polymethylmethacrylate, Light, Photonics, Oscilloscopes

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