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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| OFT, OCS, OPE (Joint) [detail] |
2016-02-18 10:20 |
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 pp.17-22 |
| OFT | 2013-05-23 14:00 |
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] |
OFT2013-1 pp.1-4 |
|
| OFT | 2013-01-24 14:55 |
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 pp.19-24 |
|
| OFT | 2013-01-24 15:20 |
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 pp.25-30 |
|
| OFT | 2011-10-20 16:25 |
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 pp.35-40 |
|
| OFT, OCS (Joint) |
2011-08-26 14:05 |
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 pp.43-48 |
|
| OFT | 2010-05-28 10:45 |
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 pp.63-66 |
| OCS, OFT, IEE-CMN | 2004-11-26 10:45 |
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 pp.21-24 |
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