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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 8 of 8  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
(Joint) [detail]
Okinawa Okinawa Univ. Numerical simulation on fiber-optic distributed dynamic-strain sensing with coherent OTDR
Yahei Koyamada, Mitsuharu Shiwa (NIMS), Kinzo Kishida (Neubrex) OFT2015-58 OPE2015-218
To investigate a potential application of the coherent OTDR in the field of measuring distributed dynamic strain or dete... [more] OFT2015-58 OPE2015-218
OFT 2013-05-23
Okinawa   High density FDM-OTDR with apodization of the probe pulse and suppression of the nonlinear effect
Hiroyuki Iida, Kunihiro Toge, Fumihiko Ito (NTT) OFT2013-1
We have developed a high sensitivity coherent optical time domain reflectometry employing frequency division
multiplexi... [more]
OFT 2013-01-24
Tokushima   Numerical simulation of fiber-optic distributed temperature measurement
Masahiro Miyamoto, Taku Itou, Shigeki Takeda, Hisashi Izumita, Yahei Koyamada (Ibaraki Univ.) OFT2012-56
Numerical simulations were conducted to investigate the ability of a sensing system based on a coherent OTDR with a prec... [more] OFT2012-56
OFT 2013-01-24
Tokushima   Measurement range enlargement in fiber-optic distributed strain and temperature sensing by coherent OTDR
Akio Togo, Tomoaki Sudo, Hisashi Izumita, Yahei Koyamada (Ibaraki Univ.), Li Che-Hsien, Kinzo Kishida (Neubrex) OFT2012-57
We extended measurand range of a coherent OTDR by introducing a fully tunable DFB laser whose optical frequency can be p... [more] OFT2012-57
OFT 2011-10-20
Nagano   Measurement of Long-haul Optical Amplifier Submarine Cable System by Coherent OTDR Employing Frequency Division Multiplexing
Hiroyuki Iida, Yusuke Koshikiya, Fumihiko Ito, Kuniaki Tanaka (NTT) OFT2011-38
We have proposed a high sensitivity coherent optical time domain reflectometry employing frequency division multiplexing... [more] OFT2011-38
Hokkaido   Fiber-Optic Distributed Temperature Measurement With Very High Resolution Over Long Range Based on Rayleigh Backscatter Traces Obtained With Coherent OTDR
Akio Togo, Yuta Iitsuka, Ryosuke Shimano, Hisashi Izumita, Yahei Koyamada (Ibaraki Univ.) OFT2011-25
Experiments and numerical simulations were conducted to find a possible performance of a technique for measuring distrib... [more] OFT2011-25
OFT 2010-05-28
Hiroshima tomo-kouminkan Ultra High Dynamic Range Coherent Optical Time Domain Reflectometry Employing Frequency Division Multiplexing
Hiroyuki Iida, Yusuke Koshikiya, Fumihiko Ito, Kuniaki Tanaka (NTT Corp.) OFT2010-13
We report ultra high dynamic range coherent optical time domain reflectometry employing frequency division multiplexing ... [more] OFT2010-13
OCS, OFT, IEE-CMN 2004-11-26
Oita Yufuin Seminer House of Nippon Bunri Universi Reproducibility of Rayleigh Backscattered Waveform from Fibers
Yousuke Eda, Souichi Hirose, Shinki Nakamura, Kazuo Hogari, Yahei Koyamada (Ibaraki Univ.)
We have proposed a technique for the distributed strain / temperature measurement that uses the jagged appearance in the... [more] OCS2004-131 OFT2004-74
 Results 1 - 8 of 8  /   
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