Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
OPE, OFT, OCS (Joint) [detail] |
2024-02-21 14:45 |
Okinawa |
Nobumoto Ohama Memorial Hall (Primary: On-site, Secondary: Online) |
Investigation of inter-core crosstalk calculation method for loopback OTDR technique Mayu Iizuka, Katsuhiro Takenaga, Takuya Oda, Kentaro Ichii (Fujikura) OCS2023-71 OPE2023-111 |
In the measurement of inter-core crosstalk (XT) of multi-core fiber using the loopback OTDR technique, a calculation met... [more] |
OCS2023-71 OPE2023-111 pp.21-24 |
OPE, OFT, OCS (Joint) [detail] |
2024-02-21 15:25 |
Okinawa |
Nobumoto Ohama Memorial Hall (Primary: On-site, Secondary: Online) |
Investigation of Effects of Dispersion Fluctuation on Multilevel Eigenvalue-modulated Signal Takumi Motomura, Akihiro Maruta (Osaka Univ.), Masaharu Ohashi (OMU-NC), Ken Mishina (Osaka Univ.) OCS2023-72 OPE2023-115 |
The eigenvalues in the Zakharov-Shabat problem for the nonlinear Schr"odinger equation are invariant quantities with res... [more] |
OCS2023-72 OPE2023-115 pp.25-30(OCS), pp.41-46(OPE) |
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, OCS, LSJ (Joint) [detail] |
2023-08-25 09:55 |
Hokkaido |
(Primary: On-site, Secondary: Online) |
Continuous time-domain measurement method of Rayleigh backscattered light Shiro Ryu (Meiji Univ.) OFT2023-13 |
We have proposed a method that enables continuous measurement of backscattered light from a specific point of an optical... [more] |
OFT2023-13 pp.21-26 |
OCS, OFT, OPE (Joint) [detail] |
2023-02-16 13:45 |
Okinawa |
kukuru-itomancity (Primary: On-site, Secondary: Online) |
Distributed Measurement of Indirect Crosstalk in 4-core Fiber Using Commercial OTDR for SMFs Yuto Kobayashi, Ayumi Inoue, Takuji Nagashima, Tetsuya Hayashi (Sumitomo Electric Industries, Ltd.) OCS2022-71 OPE2022-95 |
We measured the longitudinal accumulation profiles of the XT, using the commercial single-channel OTDR. The experimental... [more] |
OCS2022-71 OPE2022-95 pp.5-9 |
OCS, OFT, OPE (Joint) [detail] |
2023-02-16 14:10 |
Okinawa |
kukuru-itomancity (Primary: On-site, Secondary: Online) |
Novel inter-core crosstalk measurement method using loopback OTDR technique Mayu Nakagawa, Katsuhiro Takenaga, Kentaro Ichii (Fujikura Ltd.) OCS2022-72 OPE2022-96 |
We have proposed a novel inter-core crosstalk (XT) measurement method for multi-core fiber (MCF) using loopback OTDR tec... [more] |
OCS2022-72 OPE2022-96 pp.10-13 |
OPE, OFT, OCS (Joint) [detail] |
2022-02-25 10:50 |
Online |
Online |
Crosstalk test method for constructing uncoupled multi-core fiber transmission line Tomokazu Oda, Atsushi Nakamura, Yusuke Koshikiya (NTT) OFT2021-78 OPE2021-61 |
Total end-to-end inter-core crosstalk (XT) is a key requirement for transmission systems using uncoupled multi-core fibe... [more] |
OFT2021-78 OPE2021-61 pp.43-48(OFT), pp.64-69(OPE) |
OFT, OCS, LSJ (Joint) [detail] |
2021-08-26 14:45 |
Online |
Online |
A method for continuously measuring backscattered light at an arbitrary point on an optical fiber Shiro Ryu (Meiji Univ.), Takafumi Tsuboya (SECOM) OFT2021-14 |
We have proposed a continuous measurement method for Rayleigh backscattered light in the time domain at any point on the... [more] |
OFT2021-14 pp.13-18 |
OPE, OCS, OFT (Joint) [detail] |
2021-02-19 13:55 |
Online |
Online |
Application of distributed vibration sensing based on frequency-division-multiplex phase OTDR to monitoring an installed aerial optical fiber cable state Yoshifumi Wakisaka, Daisuke Iida, Tatsuya Okamoto, Yusuke Koshikiya, Nazuki Honda (NTT) OFT2020-69 OPE2020-90 |
Researches on distributed vibration sensing (DVS) to closely visualize optical fiber cable states have been developed fo... [more] |
OFT2020-69 OPE2020-90 pp.62-65(OFT), pp.67-70(OPE) |
OPE, OCS, OFT (Joint) [detail] |
2021-02-19 14:20 |
Online |
Online |
Advanced optical fiber line testing system technologies for access network Yoshitaka Enomoto (NTT) OFT2020-70 OPE2020-91 |
We have developed optical fiber line testing system (AURORA) which can reduce construction and maintenance cost and impr... [more] |
OFT2020-70 OPE2020-91 pp.66-71(OFT), pp.71-76(OPE) |
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 14:55 |
Online |
Online |
Optical Time/Frequency Domain Reflectometry for Continuous Time-Domain Measurement of Rayleigh Backscattered Light Takafumi Tsuboya, Shiro Ryu (Meiji Univ.) OFT2020-35 |
It is not possible to measure high speed frequency fluctuations that occur in the optical transmission line because conv... [more] |
OFT2020-35 pp.112-117 |
PN |
2020-03-02 13:55 |
Kagoshima |
(Cancelled but technical report was issued) |
[Invited Talk]
Improvement of real-time line monitoring system for realization of OPEN PHONONICS NETWORK Yuhei Matsumoto, Kazunori Shinya, Baku Yatabe, Takefumi Oguma (NEC) PN2019-55 |
As the open optical network progress, it becomes an issue that maintenance and troubleshooting of network infrastructure... [more] |
PN2019-55 pp.13-17 |
OCS, ITE-BCT, OFT, IEE-CMN [detail] |
2019-11-22 12:10 |
Yamaguchi |
Kaikyo-Messe-Shimonoseki |
Characteristics of changes in strain inside a landslide detected by annual measurement with TW-COTDR Tetsuya Kogure (Shimane Univ.) OFT2019-44 |
Strain changes were measured in a landslide mass in Shimane, Japan from March 2018 to March 2019 via TW-COTDR with time ... [more] |
OFT2019-44 pp.43-48 |
OFT |
2019-10-11 11:55 |
Niigata |
Ekimae-Office-Kashikaigishitsu (Niigata) |
The recent application of optical fiber distributed temperature sensing system Ryuji Nagai, Keiichi Hashiba, Jinglong Tang (SEI) OFT2019-37 |
Optical fiber temperature distribution sensing system (our registered trademark: OPTHERMO) using Raman- scattering light... [more] |
OFT2019-37 pp.27-31 |
PN |
2019-03-14 13:40 |
Okinawa |
Miyako Island Hirara Port Terminal Bldg. |
Proposition of real-time line monitoring system for realization of OPEN PHONONICS NETWORK Yuhei Matsumoto, Kazunori Shinya, Baku Yatabe, Takefumi Oguma (NEC) PN2018-84 |
As the optical network becomes open, it becomes an operational problem that maintenance and troubleshooting of network i... [more] |
PN2018-84 pp.9-12 |
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 |
OCS, OFT, LSJ (Joint) [detail] |
2018-08-31 12:10 |
Hokkaido |
Hakodate Hokuyo Building 8Kai Hall |
Operation technology for efficient maintenance of underground optical cable Miho Akamatsu, Chihiro Kito, Koji Mine, Takashi Ebine (NTT EAST) OFT2018-12 |
We are developing an efficient maintenance operation system for underground optical cable. Since water penetration gradu... [more] |
OFT2018-12 pp.29-32 |