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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 85  /  [Next]  
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
 Results 1 - 20 of 85  /  [Next]  
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