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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| OFT | 2023-10-12 10:10 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Application of distributed fiber-optic strain sensing to detection rock fracture Tianjun Zhang, Makito Kobayashi (UTokyo), Takumi Nakashima, Kotaro Fujiwara, Michio Imai, Hideki Nagatani, Yasuyuki Miyajima, Junichi Kawabata (KAJIMA), Hideaki Murayama (UTokyo)  OFT2023-17 |
When excavating large underground cavities such as tunnels and underground power stations, there is a risk of rockfall d... [more] | OFT2023-17 pp.7-10 |
| OFT | 2023-10-12 10:10 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
[Poster Presentation]
The effects of core-to-core distances of MCFs and spatial resolutions of DSSs on MCF shape sensing Takafumi Ogura, Makito Kobayashi (UTokyo), Masaki Wada, Takashi Matsui, Kazuhide Nakajima (NTT), Kengo Koizumi, Hitoshi Murai (OKI), Hideaki Murayama (UTokyo) OFT2023-18 |
A multi-core fiber (MCF) with three times the core spacing of conventional fibers was developed for shape sensing of def... [more] | OFT2023-18 pp.11-14 |
| OFT | 2023-10-12 10:10 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Estimating spatial resolution in BOCDR using Rayleigh scattering Keita Kikuchi, Ryo Inoue (SIT), Kouta Ozaki (YNU), Haruki Sasage (SIT), Yosuke Mizuno (YNU), Heeyoung Lee (SIT) OFT2023-21 |
To determine the spatial resolution of Brillouin optical correlation-domain reflectometry (BOCDR), the measurement of mo... [more] | OFT2023-21 pp.23-26 |
| OFT | 2023-10-12 13:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Extension of measurement range in OCDR based on temporal gating scheme Mana Sakamoto, Tomoya Miyamae (YNU), Kohei Noda (UTokyo), Heeyoung Lee (SIT), Yosuke Mizuno (YNU) OFT2023-31 |
For the past several decades, as a promising method for monitoring the soundness of optical fiber communication networks... [more] | OFT2023-31 pp.63-66 |
| OFT | 2023-10-12 15:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Proposal of differential spectrum scheme in Brillouin optical correlation-domain reflectometry Ryo Inoue, Haruki Sasage, Yusei Shirai, Keita Kikuchi (SIT), Yosuke Mizuno (YNU), Heeyoung Lee (SIT) OFT2023-38 |
In Brillouin optical correlation-domain reflectometry (BOCDR), the length of the fiber under test (FUT) (i.e., the measu... [more] | OFT2023-38 pp.89-92 |
| OFT | 2023-10-12 15:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Simultaneous Measurement of Strain and Temperature Distribution Using Different Doped Fibers
-- Evaluating an Impact of Misaligned Measurement Positions of Wavelength Shift Data on Simultaneous Measurement -- Mami Uchida (UT), Shinsaku Hisada, Daichi Wada, Hirotaka Igawa (JAXA), Hideaki Murayama (UT) OFT2023-40 |
Simultaneous measurements of strain and temperature distributions were conducted using OFDR and FBG sensors, which were ... [more] | OFT2023-40 pp.97-100 |
| 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 |
| US | 2022-08-22 16:05 |
Tokyo | Tokyo Tech (Ookayama Campus) | Analysis of seismic data obtained with fiber optic distributed acoustic sensor Takahiro Arioka, Kentaro Nakamura (Tokyo Tech) US2022-34 |
Distributed acoustic sensor (DAS) observes the intensity and phase of Rayleigh backscattered light to measure the strain... [more] | US2022-34 pp.29-33 |
| 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 |
| OFT | 2021-10-14 14:30 |
Online | Online | A Consideration of Seismic Detection with Distributed Acoustic Sensor using Image Processing and Recognition Takahiro Arioka, Kentaro Nakamura (Tokyo Tech) OFT2021-42 |
Distributed acoustic sensor (DAS) observes the intensity and phase of Rayleigh backscattered light to measure the strain... [more] | OFT2021-42 pp.79-84 |
| OFT | 2021-05-14 15:10 |
Online | Online | Distributed strain measurement using stimulated Brillouin scattering pumped by orthogonal two-wavelength pulses Kenichiro Tsuji, Tomoyuki Uehara (NDA) OFT2021-10 |
In the distributed strain measurement with a conventional BOTDA using stimulated Brillouin scattering, a polarization sc... [more] | OFT2021-10 pp.40-43 |
| 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 |
| OPE, OCS, OFT (Joint) [detail] |
2021-02-19 13:00 |
Online | Online | [Invited Talk]
Displacement measurement based on fiber optic system Yosuke Tanaka (Tokyo Univ. of Agir. and Tech.) OFT2020-68 OPE2020-89 |
The optical systems including optical interferometers and intensity correlators play an important role in optical measur... [more] | OFT2020-68 OPE2020-89 pp.58-61(OFT), pp.63-66(OPE) |
| 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 | 2019-05-16 14:00 |
Osaka | Ｉ-site NANBA | [Poster Presentation]
External modulation scheme for Brillouin OCDR Kohei Noda, Heeyoung Lee, Yosuke Mizuno, Kentaro Nakamura (Tokyo Tech) OFT2019-2 |
All the configurations of Brillouin optical correlation-domain reflectometry (Brillouin OCDR; BOCDR) previously reported... [more] | OFT2019-2 pp.7-10 |
| 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 |
| OFT | 2018-10-11 16:00 |
Miyagi | Touhoku Univ. | [Poster Presentation]
Effect of distributed load on BGS-based ring circumferential strain measurement Kento Nishimura, Shusuke Narieda, Hiroshi Naruse (Mie Univ.) OFT2018-47 |
We have proposed a method for measuring a ring circumferential strain. In this method, the model of a Brillouin gain spe... [more] | OFT2018-47 pp.153-156 |
| 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 |
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