Effects of Ge Co-Doping on P-Related Radiation-Induced Absorption in Er/Yb-Doped Optical Fibers for Space Applications von Kobayashi, Yuta, Sekiya, Edson H., Saito, Kazuya, Nishimura, Ryoichi, Ichii, Kentaro, Araki, Tomohiro

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Method for estimating gain coefficient spectrum of erbium-doped fiber based on net gain–loss measurement employing ^4I_13/2 level pumping von Ono, Hirotaka, Yamada, Makoto, Ichii, Kentaro, Matsuo, Shoichiro

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Optical Fiber Amplifier Employing a Bundle of Reduced Cladding Erbium-Doped Fibers von Yamada, M., Tsujikawa, K., Lin Ma, Ichii, K., Matsuo, S., Hanzawa, N., Ono, H.

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Novel Inter-Core Crosstalk Measurement Method Using a Loopback and Bidirectional OTDR Technique von Nakagawa, Mayu, Ohzeki, Masaki, Takenaga, Katsuhiro, Ichii, Kentaro

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Over 10 W Output Linearly-Polarized Single-Stage Fiber Laser Oscillating Above 1160 nm Using Yb-Doped Polarization-Maintaining Solid Photonic Bandgap Fiber von Kashiwagi, M., Takenaga, K., Ichii, K., Kitabayashi, T., Tanigawa, S., Shima, K., Matsuo, S., Fujimaki, M., Himeno, K.

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2-LP mode few-mode fiber amplifier employing ring-core erbium-doped fiber von Ono, Hirotaka, Hosokawa, Tsukasa, Ichii, Kentaro, Matsuo, Shoichiro, Nasu, Hitoshi, Yamada, Makoto

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Ring-Core Multicore Few-Mode Erbium-Doped Fiber Amplifier von Amma, Yoshimichi, Hosokawa, Tsukasa, Ono, Hirotaka, Ichii, Kentaro, Takenaga, Katsuhiro, Matsuo, Shoichiro, Yamada, Makoto

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Optical fiber amplifier employing a bundle of reduced cladding erbium-doped fibers for multi-core fiber transmission von Tsujikawa, K., Ma, L., Ichii, K., Matsuo, S., Yamada, M., Hanzawa, N., Ono, H.

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Yb-Doped and Hybrid-Structured Solid Photonic Bandgap Fibers and Linearly-Polarized Fiber Lasers Oscillating above 1160nm von KASHIWAGI, Masahiro, TAKENAGA, Katsuhiro, ICHII, Kentaro, KITABAYASHI, Tomoharu, TANIGAWA, Shoji, SHIMA, Kensuke, MATSUO, Shoichiro, FUJIMAKI, Munehisa, HIMENO, Kuniharu

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Effect of P-to-Rare Earth Atomic Ratio on Energy Transfer in Er-Yb-Doped Optical Fiber von Kobayashi, Yuta, Sekiya, Edson H., Banno, Mizuki, Nishimura, Ryoichi, Okazaki, Tomoya, Hashimoto, Yosuke, Araki, Tomohiro, Ichii, Kentaro, Saito, Kazuya

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Method for estimating gain coefficient spectrum of erbium-doped fiber based on net gain-loss measurement employing super(4)I sub(13/2) level pumping von Ono, Hirotaka, Yamada, Makoto, Ichii, Kentaro, Matsuo, Shoichiro

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Photochemical reaction of divalent-germanium center in germanosilicate glasses under intense near-ultraviolet laser excitation: Origin of 5.7 eV band and site selective excitation... von Takahashi, Masahide, Ichii, Kentaro, Tokuda, Yomei, Uchino, Takashi, Yoko, Toshinobu, Nishii, Junji, Fujiwara, Takumi

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FIBER LASER von Ichii, Kentaro, Nishimura, Ryoichi

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FIBER LASER von ICHII, Kentaro, NISHIMURA, Ryoichi

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Method for estimating gain coefficient spectrum of erbium-doped fiber based on net gain-loss measurement employing 4I(13/2) level pumping von Ono, Hirotaka, Yamada, Makoto, Ichii, Kentaro, Matsuo, Shoichiro

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Yb-Doped and Hybrid-Structured Solid Photonic Bandgap Fibers and Linearly-Polarized Fiber Lasers Oscillating above 1160 nm : Opto-electronics and Communications for Future Optical... von KASHIWAGI, Masahiro, TAKENAGA, Katsuhiro, ICHII, Kentaro, KITABAYASHI, Tomoharu, TANIGAWA, Shoji, SHIMA, Kensuke, MATSUO, Shoichiro, FUJIMAKI, Munehisa, HIMENO, Kuniharu

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Photosensitive GeO2-SiO2 films for ultraviolet laser writing of channel waveguides and bragg gratings with Cr-loaded waveguide structure von Takahashi, Masahide, Sakoh, Akifumi, Ichii, Kentaro, Tokuda, Yomei, Yoko, Toshinobu, Nishii, Junji

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Fiber laser von ICHII KENTARO, NISHIMURA RYOICHI

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OPTICAL FIBER von HAYASHI, KAZUYUKI, HIRAKAWA, KEISUKE, ICHII, KENTARO

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FIBER LASER von ICHII, Kentaro, NISHIMURA, Ryoichi

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