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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 35  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
OFT 2020-10-08
11:40
Online Online [Poster Presentation] Basic study of shape sensing for large-scale line structures with multi-core fibers by Brillouin OTDR
Makito Kobayashi, Yoshiki Maeda, Kimihiro Toh (the Univ. of Tokyo), Nobutomo Hanzawa (NTT), Kengo Koizumi, Hitoshi Murai (OKI), Ryota Wada (the Univ. of Tokyo), Takashi Matsui, Kazuhide Nakajima (NTT), Hideaki Murayama (the Univ. of Tokyo) OFT2020-19
It is difficult to observe the behavior of large-scale line structures used in offshore systems directly, such as risers... [more] OFT2020-19
pp.41-45
OFT, OCS, OPE
(Joint) [detail]
2019-02-15
09:30
Fukuoka   The evaluation in crosstalk distribution of multi-core-fiber with air-hole
Saki Nozoe (NTT), Ryohei Fukumoto (Fujikura), Kyozo Tsujikawa, Nobutomo Hanzawa (NTT), Katsuhiro Takenaga (Fujikura), Masaharu Ohashi (Osaka Pref. Univ.), Kazuhiko Aikawa (Fujikura), Kazuhide Nakajima (NTT) OFT2018-76 OPE2018-202
(Advance abstract in Japanese is available) [more] OFT2018-76 OPE2018-202
pp.31-34(OFT), pp.51-54(OPE)
OFT 2018-01-18
17:05
Kumamoto   A Study on safety confirmation by using optical fiber during power failure
Nobutomo Hanzawa, Shouhei Kuniyoshi, Atsushi Abe, Michio Ozaki, Takuo Kaiju, Tomoaki Furukawa (NTT EAST) OFT2017-62
(Advance abstract in Japanese is available) [more] OFT2017-62
pp.29-32
OFT 2018-01-19
10:20
Kumamoto   A study on melted area caused by fiber fuse propagation in optical fibers
Kyozo Tsujikawa (NTT), Kenji Kurokawa (Kitami Institute of technology), Nobutomo Hanzawa (NTT East), Saki Nozoe, Takashi Matsui, Kazuhide Nakajima (NTT) OFT2017-65
A fiber fuse is a phenomenon resulting in the catastrophic destruction of the optical fiber. In the near future the fibe... [more] OFT2017-65
pp.43-46
OFT 2017-01-20
16:30
Tokyo Kikaishinko Kaikan Dynamics of fiber fuse termination in compact fiber fuse terminator
Kyozo Tsujikawa (NTT), Kenji Kurokawa (Kitami Institute of Technology), Nobutomo Hanzawa (NTT EAST), Saki Nozoe, Takashi Matsui, Kazuhide Nakajima (NTT) OFT2016-42
(Advance abstract in Japanese is available) [more] OFT2016-42
pp.33-37
LQE, OPE, OCS 2016-10-28
13:00
Miyazaki Miyazaki Citizen's Plaza Fabrication of PLC-based 2-mode multi/demultiplexer designed by wavefront matching method and the reason of its broadband characteristics
Eri Taguchi, Yoko Yamashita, Shuntaro Makino, Takeshi Fujisawa (Hokkaido Univ.), Nobutomo Hanzawa, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Fumihiko Yamamoto (NTT), Kunimasa Saitoh (Hokkaido Univ.) OCS2016-51 OPE2016-92 LQE2016-67
We investigate the PLC-based 2-mode multi/demuliplexer using wavefront matching method based on 3D scalar finite element... [more] OCS2016-51 OPE2016-92 LQE2016-67
pp.91-96
OFT 2016-10-13
14:35
Iwate MALIOS (Morioka City) [Invited Talk] Introduction of anomalous failure in optical fiber cable
Nobutomo Hanzawa, Michio Ozaki, Tomoaki Furukawa (NTT EAST) OFT2016-16
(Advance abstract in Japanese is available) [more] OFT2016-16
pp.1-4
OFT 2015-12-11
16:40
Tokyo The University of Electro-Communications (Tokyo) Fiber Fuse Propagation in Two-mode Fiber
Saki Nozoe, Nobutomo Hanzawa, Kyozo Tsujikawa (NTT), Kenji Kurokawa (Kitami Institute of Technology), Takashi Matsui, Kazuhide Nakajima (NTT) OFT2015-53
We concern about the risk that fiber fuse initiation is increased with increasing the input power per fiber by utilizing... [more] OFT2015-53
pp.39-43
OPE, LQE, OCS 2015-10-30
14:50
Oita Beppu International Convention Center A study on a low-loss and broadband PLC-based 2-mode multi/demultiplexer using wavefront matching method based on 3D scalar FE-BPM
Yoko Yamashita, Shuntaro Makino, Takeshi Fujisawa, Kunimasa Saitoh (Hokkaido Univ.), Nobutomo Hanzawa, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Fumihiko Yamamoto (NTT) OCS2015-66 OPE2015-116 LQE2015-85
We investigate the PLC-based 2-mode multi/demuliplexer using wavefront matching method based on 3D scalar finite element... [more] OCS2015-66 OPE2015-116 LQE2015-85
pp.127-132
OFT 2015-01-23
10:45
Miyazaki   Loss properties of few-mode holey fiber induced by the inner surface imperfection of air holes
Shinichi Aozasa, Kyozo Tsujikawa, Nobutomo Hanzawa, Saki Nozoe, Fumihiko Yamamoto (NTT) OFT2014-54
We reported on the additional loss resulting from the inner surface imperfection, such as contamination and surface roug... [more] OFT2014-54
pp.47-52
ITE-BCT, OCS, OFT, IEE-CMN
(Joint) [detail]
2014-11-14
11:35
Hiroshima   A study on mode field dependency of characteristics of fiber fuse propagation in optical fiber
Nobutomo Hanzawa (NTT), Kenji Kurokawa (Kitami Inst. of Tech.), Kyozo Tsujikawa, Fumihiko Yamamoto (NTT) OFT2014-43
(Advance abstract in Japanese is available) [more] OFT2014-43
pp.71-74
OFT 2014-10-24
09:10
Hyogo   Loss analysis of higher order mode in Few-mode fiber
Saki Nozoe, Nobutomo Hanzawa, Kyozo Tsujikawa, Fumihiko Yamamoto (NTT) OFT2014-31
A mode division multiplexing transmission with a few-mode fiber (FMF) has been studied. The few-mode fiber has a relativ... [more] OFT2014-31
pp.45-49
OCS, OFT
(Joint)
2014-08-29
10:25
Hokkaido Kushiro Royal Inn Highly sensitive detection of fiber bending using 1-μm-band mode detection OTDR
Atsushi Nakamura, Keiji Okamoto, Yusuke Koshikiya, Nobutomo Hanzawa, Kazunori Katayama, Tetsuya Manabe (NTT) OFT2014-18
Fiber bending can cause troubles in the optical networks due to a fiber loss increase. The potential fault location such... [more] OFT2014-18
pp.13-16
OFT 2014-05-29
16:40
Yamagata   A study on mode dependent loss of Rayleigh scattering in few-mode fiber
Nobutomo Hanzawa, Kyozo Tsujikawa, Saki Nozoe, Lin Ma, Fumihiko Yamamoto (NTT) OFT2014-7
(Advance abstract in Japanese is available) [more] OFT2014-7
pp.31-36
OCS, OPE, OFT
(Joint) [detail]
2014-02-28
16:50
Okinawa nest HOTEL Naha Hole-assisted 6-core Fiber with Cladding Diameter of 125 μm
Taiji Sakamoto (NTT), Kunimasa Saitoh (Hokkaido Univ.), Nobutomo Hanzawa, Kyozo Tsujikawa, Lin Ma (NTT), Masanori Koshiba (Hokkaido Univ.), Fumihiko Yamamoto (NTT) OCS2013-119 OPE2013-231
We report 125 m-cladding multi-core fiber for high-density space-division multiplexing transmission. We show num... [more] OCS2013-119 OPE2013-231
pp.101-106(OCS), pp.141-146(OPE)
OCS, OFT, ITE-BCT, IEE-CMN
(Joint) [detail]
2013-11-22
11:15
Niigata Nagaoka University of Technology Application of fictive temperature measurement of optical fibers using B-OTDR technique
Lin Ma, Kyozo Tsujikawa, Nobutomo Hanzawa, Fumihiko Yamamoto (NTT) OCS2013-88
(Advance abstract in Japanese is available) [more] OCS2013-88
pp.35-38
OFT 2013-10-25
10:45
Nara   A study on effective cutoff wavelength in few-mode fiber
Nobutomo Hanzawa (NTT), Kunimasa Saitoh (Hokkaido Univ.), Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa (NTT), Masanori Koshiba (Hokkaido Univ.), Fumihiko Yamamoto (NTT) OFT2013-35
(Advance abstract in Japanese is available) [more] OFT2013-35
pp.63-66
OFT 2013-05-24
10:20
Okinawa   Optical power delivery technique using single-mode optical fiber
Lin Ma, Kyozo Tsujikawa, Nobutomo Hanzawa, Fumihiko Yamamoto (NTT) OFT2013-11
(Advance abstract in Japanese is available) [more] OFT2013-11
pp.45-48
OFT, OPE, OCS
(Joint) [detail]
2013-02-28
16:50
Tokyo   [Invited Talk] Mode-divisioin multiplexing technology for realizing ultra-large capacity transmission
Taiji Sakamoto, Nobutomo Hanzawa, Takayoshi Mori (NTT), Kunimasa Saitoh (Hokkaido university), Takashi Yamamoto (NTT), Masanori Koshiba (Hokkaido university), Fumihiko Yamamoto (NTT) OCS2012-104 OFT2012-76 OPE2012-194
Recently, mode-division multiplexing transmission has been intensively investigated because the transmission capacity ca... [more] OCS2012-104 OFT2012-76 OPE2012-194
pp.39-44
OFT, OCS, ITE-BCT, IEE-CMN
(Joint) [detail]
2012-11-22
09:50
Kumamoto   Few-Mode Photonic Crystal Fiber for Wideband Mode Division Multiplexing Transmission
Takayoshi Mori, Taiji Sakamoto, Masaki Wada, Takashi Yamamoto, Lin Ma, Nobutomo Hanzawa, Kyozo Tsujikawa, Fumihiko Yamamoto (NTT) OCS2012-82
We show numerically that photonic crystal fiber (PCF) can control the mode number over a wide wavelength range while rea... [more] OCS2012-82
pp.53-58
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