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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 23  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
OFT 2022-10-13
Kanagawa Kanagawa-Kenmin Center
(Primary: On-site, Secondary: Online)
[Poster Presentation] Extension of measurement range in OCDR based on double-modulation scheme
Mana Sakamoto (YNU/SIT), Tomoya Miyamae (YNU), Kohei Noda (YNU/Tokyo Tech), Kentaro Nakamura (Tokyo Tech), Heeyoung Lee (SIT), Yosuke Mizuno (YNU) OFT2022-20
For the past several decades, as a promising method for monitoring the soundness of optical fiber communication networks... [more] OFT2022-20
OFT 2021-10-14
Online Online [Poster Presentation] Attempt to optimize delay fiber length in BOCDR
Mana Sakamoto, Haruki Sasage (SIT), Kohei Noda (Tokyo Tech/YNU), Kentaro Nakamura (Tokyo Tech), Yosuke Mizuno (YNU), Heeyoung Lee (SIT) OFT2021-26
Brillouin optical correlation-domain reflectometry (BOCDR) is known as a distributed strain and temperature sensing tech... [more] OFT2021-26
OFT 2021-10-14
Online Online [Poster Presentation] Strain dynamic range extension in slope-assisted BOCDR based on down-conversion of Brillouin frequency shift
Haruki Sasage, Mana Sakamoto (SIT), Kohei Noda (Tokyo Tech/YNU), Kentaro Nakamura (Tokyo Tech), Yosuke Mizuno (YNU), Heeyoung Lee (SIT) OFT2021-36
Brillouin optical correlation-domain reflectometry (BOCDR) is known as a distributed strain and temperature sensing tech... [more] OFT2021-36
PN 2021-03-01
Online Online [Invited Talk] High-performance distributed sensing based on Brillouin scattering in optical fibers
Yosuke Mizuno (YNU), Kohei Noda (Tokyo Tech/YNU), Heeyoung Lee (SIT), Kentaro Nakamura (Tokyo Tech) PN2020-47
We review fiber-optic distributed Brillouin sensing technology, focusing on Brillouin optical correlation-domain reflect... [more] PN2020-47
OFT, ITE-BCT, OCS, IEE-CMN [detail] 2020-11-12
Online Online [Invited Talk] Recent trends of slope-assisted BOCDR
Heeyoung Lee (SIT), Kentaro Nakamura (Tokyo Tech), Yosuke Mizuno (YNU) OFT2020-37
Brillouin optical correlation-domain reflectometry (BOCDR) is one of the fiber-optic Brillouin-based distributed sensing... [more] OFT2020-37
OFT 2018-10-11
Miyagi Touhoku Univ. [Poster Presentation] Long-range distributed sensing based on slope-assisted BOCDR
Heeyoung Lee, Yosuke Mizuno, Kentaro Nakamura (Tokyo Tech) OFT2018-45
To measure strain, temperature and loss distributions along optical fibers, recently, we developed a new structural heal... [more] OFT2018-45
(Joint) [detail]
Okinawa Okinawa Prefectural Museum Health monitoring of optical-fiber-embedded composite structure using slope-assisted BOCDR
Heeyoung Lee, Sonoko Hagiwara (Tokyo Tech), Yutaka Ochi, Takahiro Matsui (Toray), Yukihiro Matsumoto (TUT), Yosuke Tanaka (TUAT), Hitoshi Nakamura (TMU), Yosuke Mizuno, Kentaro Nakamura (Tokyo Tech) OFT2017-71 OPE2017-175
Slope-assisted Brillouin optical correlation-domain reflectometry (SA-BOCDR) is a recently developed structural health m... [more] OFT2017-71 OPE2017-175
pp.11-16(OFT), pp.29-34(OPE)
(Joint) [detail]
Hokkaido Hokkaido Univ. Detection of shortest-ever strain by slope-assisted BOCDR
Heeyoung Lee, Yosuke Mizuno, Kentaro Nakamura (Tokyo Inst. of Tech.) OFT2017-25
To enable high-speed distributed strain/temperature measurement along optical fibers, we have developed a new configurat... [more] OFT2017-25
OFT 2017-05-25
Shimane Shimane Univ. (Matsue campus) Simplified and high speed BOTDA employing frequency-swept pulses
Chihiro Kito, Hiroshi Takahashi, Kunihiro Toge, Tetsuya Manabe (NTT) OFT2017-2
In recent years, research on optical measurement technology using Brillouin scattering capable of measuring temperature ... [more] OFT2017-2
OFT 2013-10-25
Nara   [Fellow Memorial Lecture] Techniques to evaluate optical fiber cables and to sense distributed strain and temperature based on Brillouin scattering
Tsuneo Horiguchi (Shibaura Inst. of Tech.) OFT2013-33
Brillouin scattering usually degrades the quality of signals in optical fiber communication systems. On the other hand, ... [more] OFT2013-33
OFT 2013-01-24
Tokushima   Improvement of receiver sensitivity and elongation of measurement range in double-pulse BOTDR
Masahiro Kumoda, Yusuke Anzai, Satoshi Matsuura, Yahei Koyamada (Ibaraki Univ.) OFT2012-55
The receiver sensitivity of the double-pulse BOTDR was improved by 7 dB by shifting frequency band for the Brillouin sca... [more] OFT2012-55
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 2012-05-25
Gifu Hida, Earth Wisdom Center [Tutorial Lecture] Trend of Optical Fiber Sensors
Ryozo Yamauchi (Fujikura) OFT2012-10
Optical fibers, especially silica-based optical fibers have a number of advantages such as low-loss, wide bandwidth, lig... [more] OFT2012-10
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 2009-05-29
Shizuoka   Improvement in measurement accuracy of double-pulse Brillouin optical time-domain reflectometry with signal processing technology
Kazushi Oishi, Satoshi Matsuura, Shoji Adachi (Yokogawa Electric Corp.), Yahei Koyamada (Ibaraki Univ.) OFT2009-16
To detect the peak frequency of the Brillouin spectrum accurately is very important to achieve a high accurate strain an... [more] OFT2009-16
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, OPE 2009-03-06
Tokyo Kikai-Shinko-Kaikan Bldg Stable entire-length measurement of fiber strain distribution by Brillouin optical correlation-domain reflectometry with polarization scrambling
Yosuke Mizuno, Zuyuan He, Kazuo Hotate (Univ. of Tokyo) OFT2008-93 OPE2008-193
Recently we have proposed a Brillouin optical correlation-domain reflectometry (BOCDR) to measure the distribution of st... [more] OFT2008-93 OPE2008-193
OFT, OPE 2009-03-06
Tokyo Kikai-Shinko-Kaikan Bldg Improvement in Measurement Accuracy and Speed of Distributed Sensing in a Long-length FBG
Koji Kajiwara, Kazuo Hotate (Tokyo Univ.) OFT2008-94 OPE2008-194
A new sensor system for measuring the Bragg wavelength distribution in a long-length fiber Bragg grating was proposed re... [more] OFT2008-94 OPE2008-194
OFT 2009-01-23
Kochi   Numerical simulation of nonlinear pulse propagation effect on distributed strain and temperature measurement with BOTDA
Yahei Koyamada, Naoya Tsuji (Ibaraki Univ.) OFT2008-80
This paper presents a numerical simulation of the nonlinear pulse propagation effect on the distributed strain and tempe... [more] OFT2008-80
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