Prof. Takehisa Shibuya Profile

Prof. Takehisa Shibuya

Professor at Tokai Univ

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Author

Publications (14)

Proceedings Article | 16 March 2015 Paper

Application of photo-doping phenomenon in amorphous chalcogenide GeS2 film to optical device

Yoshihisa Murakami, Katsuya Arai, Moriaki Wakaki, Takehisa Shibuya, Toshihiro Shintaku

Proceedings Volume 9359, 93591N (2015) https://doi.org/10.1117/12.2078142

KEYWORDS: Silver, Waveguides, Diffraction, Chalcogenides, Diffraction gratings, Optical components, Metals, Doping, Holography, Helium neon lasers

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Proceedings Article | 16 March 2015 Paper

Optical properties of MgF2 nano-composite films dispersed with noble metal nanoparticles synthesized by sol-gel method

Moriaki Wakaki, Nobuaki Soujima, Takehisa Shibuya

Proceedings Volume 9359, 93590A (2015) https://doi.org/10.1117/12.2077045

KEYWORDS: Nanoparticles, Magnesium fluoride, Silver, Gold, Absorption, Metals, Composites, Sol-gels, Raman spectroscopy, Transmission electron microscopy

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Proceedings Article | 3 February 2009 Paper

Development of luminaires using high power color LEDs and application to lighting system for color hologram

Moriaki Wakaki, Takehisa Shibuya, Junko Baba, Hisashi Asakawa

Proceedings Volume 7232, 723211 (2009) https://doi.org/10.1117/12.808478

KEYWORDS: Holograms, Light emitting diodes, 3D image reconstruction, Light sources, Halogens, Lamps, Light sources and illumination, LED lighting, General lighting, Light

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Proceedings Article | 20 December 2007 Paper

Damage characteristics at optical fiber connector for high power light transmission

S. Matsuda, T. Shibuya, M. Wakaki

Proceedings Volume 6720, 67200K (2007) https://doi.org/10.1117/12.752817

KEYWORDS: Connectors, Optical fibers, Nickel, Zirconium dioxide, Metals, Transmittance, Light sources, Contamination, Adhesives, High power lasers

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In the field of optical communication, either fusion splicing of optical fibers or physical contact between optical-fibers using a fiber connector has been utilized as the typical method of optical fiber connection. Optical fiber connectors have been widely employed in optical transmission systems according to their features of easy and quick connection without special apparatus to connect fibers. The power of laser diodes for light sources became more intense and the multiplexing of wavelength (WDM) of a light source was enhanced with increasing traffic data. As a result, intense light transmits through the optical fiber. The high power transmission characteristics of the optical fiber connector are important factors to realize dense wavelength division multiplexing systems (DWDM). In this paper, we present an experimental investigation about the degradation of the transmission properties through the optical fiber connector by introducing the contamination between the end faces of a connector. The metal foils to simulate the contamination at the end of the core were inserted between the optical fibers to cover the core of an optical fiber partially. As metal foils, Nickel, SUS304, and Phosphor Bronze which were typically used as the components of the ferrule and sleeve were selected. The Nd: YAG laser with the wavelength of 1064 nm was used as a high power light source at various output powers. The transmission loss was set by adjusting the insertion of a metal foil into the core region of the fiber and the temperature rising of the connector induced by the absorption of incident light was measured at a sleeve portion. The damage at the end face of the physical contact region was observed using an optical microscope. The temperatures increase of the core of the fiber was estimated for the fiber connector with a zirconia ferrule through the thermal simulation using the MSC Visual Nastran. The damage of the fiber end face was recognized depending on the species of the metal foil and the covering ratio for the core in the case of a high power light transmission, typically, with the average power of 1W. It was estimated that the damage threshold of the fiber end becomes low for the ferrule with lower melting point. The correlation between the damage threshold and various parameters was discussed.

Proceedings Article | 20 February 2007 Paper

Development of lighting system for hologram using high power LEDs

Junko Baba, Asami Yaeda, Hisashi Asakawa, Takehisa Shibuya, Moriaki Wakaki

Proceedings Volume 6488, 64880Z (2007) https://doi.org/10.1117/12.698965

KEYWORDS: Holograms, Light emitting diodes, 3D image reconstruction, Halogens, Lamps, Light sources, Light sources and illumination, Blue light emitting diodes, Photometry, Green light emitting diodes

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Proceedings Article | 29 June 2004 Paper

Multi-imaging hologram for physics education in university and college

Takehisa Shibuya, Toshinori Kimura, Toshiharu Sumi, Shotaro Tada, Huang Iju, Hidetoshi Katsuma, Moriaki Wakaki

Proceedings Volume 5290, (2004) https://doi.org/10.1117/12.526552

KEYWORDS: Holograms, Holography, 3D image reconstruction, Image acquisition, 3D image processing, Physics, Beam splitters, Image storage, Helium neon lasers, Mirrors

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Proceedings Article | 26 November 2003 Paper

Holography for physics education in universities and colleges

Hidetoshi Katsuma, Toshinori Kimura, Takehisa Shibuya, Moriaki Wakaki

Proceedings Volume 5243, (2003) https://doi.org/10.1117/12.511230

KEYWORDS: Holography, Holograms, Data storage, Physics, Digital recording, Diffraction, Compact discs, Beam splitters, Visualization, Magnetism

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Proceedings Article | 19 November 2003 Paper

Observation of the dynamic behavior of liquid crystals using T-FDP (Transmission type Four Detectors Polarimeter)

Shuichi Kawabata, Junichi Arizi, Takehisa Shibuya, Moriaki Wakaki

Proceedings Volume 4829, (2003) https://doi.org/10.1117/12.524008

KEYWORDS: Liquid crystals, Polarization, Sensors, Stanford Linear Collider, Polarimetry, Optical spheres, Molecules, Calibration, Signal processing, Data acquisition

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Proceedings Article | 4 June 2003 Paper

Holography for physics education using a simple optical setup

Hidetoshi Katsuma, Takehisa Shibuya, Moriaki Wakaki, Hiromichi Matsumoto

Proceedings Volume 5005, (2003) https://doi.org/10.1117/12.473810

KEYWORDS: Holography, Holograms, Physics, Cameras, Semiconductor lasers, Mirrors, Laser optics, Glasses, Fiber lasers, Camera shutters

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Proceedings Article | 27 November 2002 Paper

Holography for physics education in university and college

Takehisa Shibuya, Hidetoshi Katsuma, Moriaki Wakaki

Proceedings Volume 4864, (2002) https://doi.org/10.1117/12.454901

KEYWORDS: Holograms, Holography, Cameras, 3D image reconstruction, Physics, Laser optics, Semiconductor lasers, 3D image processing, Mirrors, Light sources

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Proceedings Article | 12 September 2002 Paper

Maskless patterning characteristics of vanadium pentoxide amorphous films by frequency-doubled Q-seitched Nd:YAG laser irradiation

Moriaki Wakaki, Ryuzaburo Nakao, Hironobu Sakata, Takehisa Shibuya, Akira Yoshikado

Proceedings Volume 4915, (2002) https://doi.org/10.1117/12.482906

KEYWORDS: Glasses, Laser irradiation, Scanning electron microscopy, Optical lithography, Vanadium, Nd:YAG lasers, Pulsed laser operation, Atomic force microscopy, Q switched lasers, Second-harmonic generation

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Proceedings Article | 4 June 2001 Paper

Optical characterization of BGO and BSO film for image recording

Kenji Isshin, Hayato Nagase, Hiroshi Murotani, Takehisa Shibuya, Hiroshi Yoshida, Hidetoshi Katsuma, Moriaki Wakaki

Proceedings Volume 4296, (2001) https://doi.org/10.1117/12.429477

KEYWORDS: Crystals, Glasses, Image acquisition, Diffraction, Holography, Sputter deposition, Image processing, Thin films, Argon ion lasers, Ion lasers

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Proceedings Article | 17 March 2000 Paper

Fabrication of BGO and BSO films for image recording

Hiroshi Murotani, Takehisa Shibuya, Moriaki Wakaki, Hidetoshi Katsuma, Hideshi Yokota

Proceedings Volume 3956, (2000) https://doi.org/10.1117/12.380019

KEYWORDS: Crystals, Holography, Absorption, Diffraction, Temperature metrology, X-ray diffraction, Image acquisition, Image processing, Crystallography, Sputter deposition

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Proceedings Article | 16 August 1996 Paper

In-situ ellipsometric study of growth of Au thin films

Takehisa Shibuya, Naoji Amano, Shuichi Kawabata, Hideshi Yokota

Proceedings Volume 2873, (1996) https://doi.org/10.1117/12.246210

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Showing 5 of 14 publications

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