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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| OFT | 2022-10-13 09:30 |
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 pp.9-12 |
| OFT | 2021-10-14 10:30 |
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 pp.19-22 |
| OFT | 2021-10-14 13:00 |
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 pp.59-62 |
| PN | 2021-03-01 16:15 |
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 pp.30-37 |
| OFT, ITE-BCT, OCS, IEE-CMN [detail] | 2020-11-12 13:20 |
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 pp.1-6 |
| OFT | 2018-10-11 16:00 |
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 pp.145-148 |
| OPE, OCS, OFT (Joint) [detail] |
2018-02-15 16:25 |
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) |
| OFT, OCS, LSJ (Joint) [detail] |
2017-08-31 13:40 |
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 pp.5-8 |
| OFT | 2017-05-25 14:30 |
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 pp.7-10 |
| OFT | 2013-10-25 09:25 |
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 pp.51-56 |
|
| OFT | 2013-01-24 14:30 |
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 pp.13-18 |
|
| 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 | 2012-05-25 09:00 |
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 pp.45-50 |
| 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 | 2009-05-29 11:50 |
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 pp.75-78 |
|
| OFT, OPE | 2009-03-06 11:00 |
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 pp.19-24 |
| OFT, OPE | 2009-03-06 13:30 |
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 pp.31-38 |
| OFT, OPE | 2009-03-06 13:55 |
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 pp.39-44 |
| OFT | 2009-01-23 09:25 |
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 pp.45-49 |
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