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Kubota Hirokazu
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Faculty in charge, etc. 【 display / non-display 】
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College of Engineering
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Graduate School of Engineering
Research field 【 display / non-display 】
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Optilal Communication technologies
Research content 【 display / non-display 】
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（Keyword）optical fiber, Self phase mosulation, NLS
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（Keyword）optical soliton, Kerr effect, self phase modulaiton
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（Keyword）photonic crystal, band structure, optical fiber, anti-resonant
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（Keyword）few-mode fiber, mode mux / demux, optical fiber
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（Keyword）optical fiber, fiber grating, interferometer
Degree 【 display / non-display 】
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Doctor of Engineering, The University of Tokyo
Academic Society Affiliations 【 display / non-display 】
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Association of the Institute of Electronics, Information and Communication Engineers (IEICE)
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The Optical Society of America (OSA)
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IEEE
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The Laser Society of Japan (LSJ)
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The Institution of Engineering and Technology (IET)
Papers 【 display / non-display 】
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Cladding mode loss effect on transmission characteristics of mechanically induced long-period fiber gratings, Electronics and communications in Japan, 2020.11, Yasuhiro Tsutsumi, Kenta Kitahara, Masaharu Ohashi, Hirokazu Kubota, Yuji Miyoshi, Ikuo Yamashita
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IEICE Communications Express, Vol.9, No.7, 330–335Differential group delaymeasurements of few-modefibers using an interferometrictechnique, IEICE Communications Express,, 2020.07, Momoko Inoue, Masaharu Ohashi, Hirokazu Kubota,Yuji Miyoshi, and Nori Shibata
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Mode recoupling between core and cladding modes of cascaded-LPFGs fabricated with heat-shrinkable tube employing a thin confinement layer, IEICE Communications Express, 2019.07, Yasuhiro Tsutsumi, Takahiro Hase, Masaharu Ohashi, Yuji Miyoshi, Hirokazu Kubota, Ikuo Yamashita
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Variable Mode Excitation Ratio Method for Measuring Attenuation Coefficients of LP Mode Groups, Journal of Lightwave Technology, 2018.12, S. Nozoe, T. Matsui, K. Tsujikawa, M. Taruno, H. Kubota, M. Ohashi, K. Nakajima
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Unique Loss Characteristics in TE01 Modes of Conventional Photonic Bandgap Fibers, Optics Letters, 2018.06, HIROKAZU KUBOTA, NOBUAKI KOSAKE, YUJI MIYOSHI, MASAHARU OHASHI
Charge of class subject 【 display / non-display 】
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Electromagnetic Theory IA
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Electromagnetic Wave Engineering
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Advanced Electromagnetic Waves
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Selected Topics in Opto-electronics
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Basic Computer Science (Including Information Society and Ethics)