Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
NS, PN, OCS (Joint) |
2024-06-07 13:20 |
Nagasaki |
(Primary: On-site, Secondary: Online) |
Study on improving the applicability of underwater visible light communication system
-- Frame loss ratio measurements in a small tank with turbid water -- Natsuki Segawa, Ryuto Fukuma, Ken Takagi, Hideaki Murayama (Univ. of Tokyo) OCS2024-15 |
To enhance the applicability of optical wireless communication, which is gaining attention as a high-speed and high-capa... [more] |
OCS2024-15 pp.35-40 |
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 13:00 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Distributed strain measurements of multi-core fiber ribbon Shintaro Nakamoto, Takafumi Ogura (UTokyo), Masaki Wada, Takashi Matsui, Kazuhide Nakajima (NTT), Ryota Wada, Hideaki Murayama (UTokyo) OFT2023-24 |
We propose a ribbon-shaped optical fiber (MCF ribbon) consisting MCFs and SMFs, which is designed to fix the twisted con... [more] |
OFT2023-24 pp.35-38 |
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 13:00 |
Tokyo |
Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
[Invited Talk]
Development of digital twin and application of fiber-optic sensors for structural monitoring Hideaki Murayama (UTokyo) OFT2023-42 |
[more] |
OFT2023-42 pp.105-106 |
OFT |
2020-10-08 11:40 |
Online |
Online |
[Poster Presentation]
Basic study of shape sensing for large-scale line structures with multi-core fibers by Brillouin OTDR Makito Kobayashi, Yoshiki Maeda, Kimihiro Toh (the Univ. of Tokyo), Nobutomo Hanzawa (NTT), Kengo Koizumi, Hitoshi Murai (OKI), Ryota Wada (the Univ. of Tokyo), Takashi Matsui, Kazuhide Nakajima (NTT), Hideaki Murayama (the Univ. of Tokyo) OFT2020-19 |
It is difficult to observe the behavior of large-scale line structures used in offshore systems directly, such as risers... [more] |
OFT2020-19 pp.41-45 |
OFT |
2020-10-09 14:30 |
Online |
Online |
Interferometer based on photonic integrated circuit for optical frequency domain reflectometry Victor Shishkin, Akio Higo, Hideaki Murayama (UTokyo) OFT2020-34 |
We demonstrate an ultra-compact interferometer integrated on silicon photonic chip for distributed sensing using optical... [more] |
OFT2020-34 pp.109-111 |
OFT |
2013-10-24 16:15 |
Nara |
|
[Invited Talk]
Report about OFS-22 Hideaki Murayama (Univ. of Tokyo) OFT2013-29 |
(Advance abstract in Japanese is available) [more] |
OFT2013-29 pp.33-38 |
OPE, EMD, CPM, LQE |
2009-08-21 13:00 |
Miyagi |
|
Strain and Temperature Multiplexed Measurement Sensor Utilizing Polarization Maintaining Fiber Koji Omichi, Yoshihiro Terada (Fujikura Ltd.), Daichi Wada, Hideaki Murayama (The Univ. of Tokyo), Hirotaka Igawa (JAXA) EMD2009-49 CPM2009-73 OPE2009-97 LQE2009-56 |
A fiber Bragg grating (FBG) utilizing PANDA type polarization maintaining fiber was demonstrated as a strain and tempera... [more] |
EMD2009-49 CPM2009-73 OPE2009-97 LQE2009-56 pp.117-122 |
OFT |
2008-05-16 10:30 |
Osaka |
|
Polarization Division Multiplexing Measurement of Optical Frequency Domain Reflectometry Utilizing Polarization Maintaining Fiber for All Paths Koji Omichi, Akira Sakamoto, Shunichiro Hirafune (Fujikura Ltd.), Daichi Wada, Hideaki Murayama (The Univ. of Tokyo), Hirotaka Igawa (JAXA) OFT2008-12 |
A strain sensing system which can measure distributed strain in fiber Bragg grating (FBG) attracts the attention, recent... [more] |
OFT2008-12 pp.51-54 |