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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]
Brillouin frequency shift measurement based on zero-crossing point search in virtually composed spectra of Brillouin gain and loss Hayato Nonogaki, Daichi Sei (Tokyo Univ. of Agri. & Tech.), Mohd Saiful Dzulkefly Bin Zan (UKM), Yosuke Tanaka (Tokyo Univ. of Agri. & Tech.) OFT2023-28 |
We demonstrate a method for fast and precise measurement of Brillouin frequency shift by searching for the zero-crossing... [more] | OFT2023-28 pp.51-54 |
| 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 | 2023-10-13 14:20 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
Consideration of measurement ability improvement about broadband light probe BOTDA. Takahiro Ishimaru, Yoshifumi Wakisaka, Hiroshi Takahashi, Yusuke Koshikiya (NTT) OFT2023-44 |
In recent years, optical fiber distributed vibration measurement based on Brillouin scattering, which can measure large ... [more] | OFT2023-44 pp.111-114 |
| IN, NS (Joint) |
2023-03-02 15:20 |
Okinawa | Okinawa Convention Centre + Online (Primary: On-site, Secondary: Online) |
A comparative study of distributed real-time human tracking methods using multiple cameras Hikaru Katayama, Hideto Yano, Tomoki Yoshihisa, Hideyuki Shimonishi (Osaka Univ.) NS2022-202 |
In recent years, there are many surveillance camera in cities, and people-tracking technology using them has been focuse... [more] | NS2022-202 pp.201-206 |
| ITE-BCT, OCS, IEE-CMN, OFT | 2022-11-11 10:10 |
Miyagi | Forest-Sendai (Primary: On-site, Secondary: Online) |
Observation of Rayleigh scattering by simplified optical correlation-domain reflectometry Tomoya Miyamae, Guangtao Zhu, Takaki Kiyozumi (YNU), Kohei Noda (Tokyo Tech/YNU), Heeyoung Lee (SIT), Kentaro Nakamura (Tokyo Tech/YNU), Yosuke Mizuno (YNU) OFT2022-39 |
Recent rapid growth of optical fiber communication has led to a significant demand for health monitoring technology of o... [more] | OFT2022-39 pp.11-14 |
| RCS | 2022-10-27 12:30 |
Ehime | Ehime University, and online (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Research Activities for Deploying Cell-Free Massive MIMO Systems Masaaki Ito (KDDI Research/USC), Shunsuke Kamiwatari, Noboru Osawa, Issei Kanno, Yoshiaki Amano (KDDI Research) RCS2022-132 |
In cell-free massive MIMO systems, a massive number of distributed antennas cooperate with each other and communicate wi... [more] | RCS2022-132 p.25 |
| 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 |
| MW | 2021-12-16 15:15 |
Kanagawa | Kawasaki City Industrial Promotion Hall (Primary: On-site, Secondary: Online) |
Analysis and Design of a Differential Distributed Amplifier with Coupled Inductors Keisuke Kawahara, Yohtaro Umeda, Kyoya Takano (TUS), Shinsuke Hara (NICT) MW2021-92 |
This paper presents a differential distributed amplifier with coupled inductors. Broadband and multi-level signaling are... [more] | MW2021-92 pp.43-48 |
| OFT | 2021-10-14 10:30 |
Online | Online | [Poster Presentation]
World-fastest operation of OCDR without spatial resolution deterioration Tomoya Miyamae, Zhu Guangtao, Takaki Kiyozumi (YNU), Kohei Noda (Tokyo Tech/YNU), Heeyoung Lee (SIT), Kentaro Nakamura (Tokyo Tech), Yosuke Mizuno (YNU) OFT2021-23 |
Recent rapid growth of optical fiber communication has led to a significant demand for health monitoring technology of o... [more] | OFT2021-23 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 |
| 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 |
| MW | 2021-05-20 14:55 |
Online | Online | A Trial Manufacture of an Area-Efficient Distributed Amplifier Using Pseudo-Fractal Bended Transmission Lines Keisuke Kawahara, Yohtaro Umeda, Kyoya Takano (TUS), Shinsuke Hara (NICT) MW2021-9 |
In recent years, communication traffic has been increasing. Distributed amplifiers have been reported to a bandwidth of ... [more] | MW2021-9 pp.22-27 |
| 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 |
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