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 Results 1 - 16 of 16  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
OFT, ITE-BCT, OCS, IEE-CMN [detail] 2020-11-13
Online Online Commercialization of Coded PSP-BOTDR capable of centimeter spatial resolution in single end style
Kinzo Kishida, Kenichi Nishiguchi, Artur Guzik, Li Ttken (Neubrex), Tsuneo Horiguchi (SIT), Yahei Koyamada (Ibaraki Univ.) OFT2020-42
(Advance abstract in Japanese is available) [more] OFT2020-42
OFT, ITE-BCT, OCS, IEE-CMN [detail] 2020-11-13
Online Online Commercialization of real-time distributed acoustic fiber optic sensing (DAS) utilizing chirped pulse
Kinzo Kishida, Artur Guzik, Li Ttken, Nishiguchi Kenichi, Daiji Azuma (Neubrex), Qingwen Liu, Zuyuan He (SJTU) OFT2020-44
Distributed Acoustic Sensing (DAS) in optical fibers detects dynamic strain or sound waves by measuring the phase change... [more] OFT2020-44
(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
Hokkaido   Fabrication of Fiber-Optic Distributed Acoustic Sensor and Its Signal Processing
Ken'ichi Nishiguchi (Osaka Univ.), Li Che-Hsien, Artur Guzik, Mitsunori Yokoyama, Kinzo Kishida (Neubrex) OFT2015-21
We fabricated a fiber-optic distributed acoustic sensing (DAS) system using a narrow linewidth laser. DAS systems are cl... [more] OFT2015-21
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 2013-01-24
Tokushima   Proposal and experimental verification of synthetic Brillouin optical time-domain reflectometry
Ken'ichi Nishiguchi (Osaka Univ.), Li Che-Hsien, Artur Guzik, Kinzo Kishida (Neubrex) OFT2012-58
We propose a novel method to improve the spatial resolution of Brillouin optical time-domain reflectometry (BOTDR), whic... [more] OFT2012-58
OFT 2013-01-24
Tokushima   Hybrid Brillouin-Rayleigh distributed sensing system capable to separate strain and temperature in single SM fiber
Kinzo Kishida, Li Che-Hsien (Neubrex), Ken'ichi Nishiguchi (Osaka Univ.), Yoshiaki Yamauchi, Artur Guzik (Neubrex) OFT2012-59
This paper deals with development of a hybrid Brillouin-Rayleigh sensing system. The system is capable of separating str... [more] OFT2012-59
OFT 2010-05-28
Hiroshima tomo-kouminkan PPP-BOTDA system capable of in-the-field distributed fiber sensing with 2cm spatial resolution
Li Che-Hsien, Tsutomu Tsuda, Artur Guzik, Miyuki Miyatake, Atushi Makita, Hirokazu Takano, Kinzo Kishida (NEUBREX) OFT2010-12
The paper presents enhanced Pulse-Pre-Pump Brillouin Optical Time Domain Analysis (PPP-BOTDA) method, capable of achievi... [more] OFT2010-12
OFT, OPE 2009-03-06
Tokyo Kikai-Shinko-Kaikan Bldg High-performance Brillouin distributed sensing using pulse compression technique
Ken'ichi Nishiguchi (Osaka Univ.), Li Che-Hsien, Kinzo Kishida (Neubrex) OFT2008-91 OPE2008-191
The spatial resolution of strain/temperature measurements using Brillouin scattering in an optical fiber is proportional... [more] OFT2008-91 OPE2008-191
OFT 2008-10-17
Tokyo   Optical fiber sensor cable for pipe thinning detection in high temperature environment conditions.
Shimei Tanaka, Naoki Okada, Matsuhiro Miyamoto (FJK), Kinzo Kishida, Li Che-Hsien, Yoshiaki Yamauchi (NB), Hiroaki Suzuki (ChAS) OFT2008-37
We developed heat-resistant optical fiber sensor cable, exhibiting excellent sensitivity to local strain variations. By ... [more] OFT2008-37
OFT 2008-10-17
Tokyo   PPP-BOTDA method to achieve 10cm spatial resolution and 10Hz measuring speed in distributed sensing
Li Che-Hsien, Tsutomu Tsuda, Takahiro Sawa, Atushi Makita, Hirokazu Takano, Kinzo Kishida (NEUBREX), Zhishen Wu (Ibaraki University), Nobuo Takeda, Shu Minakuchi (Tokyo University) OFT2008-42
The Pulse-Pre-Pump Brillouin Optical Time Domain Analysis (PPP-BOTDA) method is capable of achieving 2cm spatial resolut... [more] OFT2008-42
OFT 2008-05-16
Osaka   PPP-BOTDA method to achieve 2cm spatial resolution in Brillouin distributed meagsuring technique
Li Che-Hsien, Kenichi Nishiguchi, Miyuki Miyatake, Atushi Makita, Mitsunori Yokoyama, Kinzo Kishida (NB), Tadahito Mizutani, Nobuo Takeda (Univ. of Tokyo) OFT2008-13
PPP-BOTDA (Pulse-PrePump Brillouin Optical Time Domain Analysis) method was published in previous work and the possibili... [more] OFT2008-13
OPE, OFT 2008-03-07
Tokyo Kikai-Shinko-Kaikan Bldg. Sophistication of pulse-prepump method for Brillouin distributed optical fiber sensors
Ken'ichi Nishiguchi (Osaka Univ.), Kinzo Kishida, Li Che-Hsien (Neubrex), Zhishen Wu (Ibaraki Univ.) OFT2007-68 OPE2007-187
An accuracy improvement method for Brillouin distributed sensing system is proposed. We previously proposed a high-resol... [more] OFT2007-68 OPE2007-187
Akita Akita Univ. PPP-BOTDA method to achieve cm-order spatial resolution in Brillouin distributed measuring technique
Li Che-Hsien, Tsutomu Tsuda, Kinzo Kishida (NEUBREX)
Principle of Pulse Pre-Pump(PPP) method was published in our previous work. The possibility of access both high spatial ... [more] OFT2005-16
OFT 2004-10-15
Chiba Chiba Univercity Perturbation analysis of stimulated Brillouin scattering in an optical fiber with a finite extinction ratio
Ken'ichi Nishiguchi (MELCO), Kinzo Kishida (Neubrex)
The resolution of strain measurements using Brillouin scattering in an optical fiber depends on the pulse width of a pum... [more] OFT2004-47
OFT 2004-10-15
Chiba Chiba Univercity Pulsed pre-pump method to achieve centimeter order spatial resolution in Brillouin distributed measuring technique
Kinzo Kishida, Li Che-Hsien, Shengbin Lin (Neubrex), Ken'ichi Nishiguchi (MELCO)
 [more] OFT2004-48
 Results 1 - 16 of 16  /   
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