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]
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 |
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 |
2018-10-11 16:00 |
Miyagi |
Touhoku Univ. |
[Poster Presentation]
Measurement Methods of Brillouin Frequency Shift for PSP-BOTDR Based on Fourier Transform Yuki Masui, Mohd Saiful Dzulkefly Zan, Tsuneo Horiguchi (SIT) OFT2018-46 |
When analyzing the signal of BOTDR by Fourier transform, the absolute value of the complex spectrum is usually used. In ... [more] |
OFT2018-46 pp.149-152 |
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 |
2011-10-21 10:55 |
Nagano |
|
Displacement measurement of vibrated timber-framed brick wall using fiber optic sensing system Yuya Mizuno, Hiroshi Naruse, Toshikazu Hanazato, Sachiho Hanazato (Mie Univ.), Yoshiaki Tominaga (Heritage Structure Engineering Design), Tadashi Mikoshiba (NIED), Yasushi Niitsu (Tokyo Denki Univ.) OFT2011-45 |
To preserve and restore the Tomioka Silk Mill's west cocoon warehouse which is a National Important Cultural Property, f... [more] |
OFT2011-45 pp.75-78 |
OFT |
2010-05-28 09:20 |
Hiroshima |
tomo-kouminkan |
[Special Invited Talk]
The latest trend of optical fiber sensing technology Shoji Adachi (Yokogawa Electric Corp.) OFT2010-11 |
Smart structures and materials in which an optical fiber acts as a sensor have many features in health monitoring, such ... [more] |
OFT2010-11 pp.51-56 |
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 |
2007-10-19 10:50 |
Toyama |
|
Detection sensitivity of Brillouin scattering near the Fresnel reflection in BOTDR measurement Daisuke Iida, Fumihiko Ito (NTT) OFT2007-35 |
We discuss the effect of Fresnel reflection on BOTDR measurement. We show that the theoretical detection sensitivity wi... [more] |
OFT2007-35 pp.17-21 |
OFT |
2007-01-26 10:40 |
Mie |
|
Application of distributed fiber optic strain sensing system to underground mine monitoring Hiroshi Naruse (Mie Univ.), Hideki Uehara, Taishi Deguchi (NTT AS), Kazuhiko Fujihashi (NTT InfraNet), Masatoshi Onishi (Aichi University of Technology), , , , , (CODELCO) OFT2006-66 |
To monitor changes in an underground mine’ state resulting from mining activities, a monitoring system using a distribut... [more] |
OFT2006-66 pp.71-76 |
OFT, OCS (Joint) |
2005-08-25 13:05 |
Akita |
Akita Univ. |
PPP-BOTDA method to achieve cm-order spatial resolution in Brillouin distributed measuring technique Li Che-Hsien, Tsutomu Tsuda, Kinzo Kishida (NEUBREX) |
Principle of Pulse Pre-Pump(PPP) method was published in our previous work. The possibility of access both high spatial ... [more] |
OFT2005-16 pp.1-6 |