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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 13:00 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Judgement accuracy improvement of analysis area conformity searched coarsely for nonuniform strain measurement Motoki nakagawa, Takaya Kurokawa, Shusuke Narieda, Hiroshi Naruse (Mie University)  OFT2023-25 |
Optical fiber sensors that measure strain based on the assumption that the shape of the Brillouin gain spectrum (BGS) is... [more] | OFT2023-25 pp.39-42 |
| 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, ITE-BCT, OCS, IEE-CMN [detail] | 2020-11-13 14:55 |
Online | Online | Notchless spectra realized by Brillouin optical correlation domain analysis using pulse train arranged at power intervals Daiki Miyake, Yudai Hattori, Fumihiko Ito (Shimane Univ.) OFT2020-41 |
A signal using pulse trains arranged at power intervals applicable to the correlation domain analysis is proposed. The a... [more] | OFT2020-41 pp.21-26 |
| OFT | 2020-01-17 09:00 |
Aichi | NINS Okazaki Conference Center | Denoising of Brillouin gain spectrum via dictionary learning considering strain variation Shogo Shimizu, Shota Kitamura, Shusuke Narieda, Hiroshi Naruse (Mie Univ.) OFT2019-52 |
In the optical fiber strain measurement using the Brillouin scattering phenomenon, the strain is obtained through the an... [more] | OFT2019-52 pp.29-34 |
| OCS, ITE-BCT, OFT, IEE-CMN [detail] | 2019-11-22 09:55 |
Yamaguchi | Kaikyo-Messe-Shimonoseki | Comb-like Brillouin spectrum generated by pulse train arranged at power intervals Miyu Okawa, Shohei Kawakami, Daiki Miyake, Fumihiko Ito (Shimane Univ.) OFT2019-40 |
A correlation analysis method using short pulse trains arranged at power intervals as pump probe light is proposed. The ... [more] | OFT2019-40 pp.23-27 |
| OFT | 2018-10-11 16:00 |
Miyagi | Touhoku Univ. | [Poster Presentation]
Maximum and Minimum strain extraction from Brillouin gain spectrum using nonnegative matrix factorization Takuya Fujimoto, Hiroshi Naruse (Mie Univ.), Takanori Nishino (Meijo Univ.) OFT2018-48 |
A fiber optic strain measurement based on the Brillouin scattering phenomenon enables a distributed strain measurement a... [more] | OFT2018-48 pp.157-161 |
| OCS, OFT, LSJ (Joint) [detail] |
2018-08-30 14:30 |
Hokkaido | Hakodate Hokuyo Building 8Kai Hall | Investigation on Cross-sectional Brillouin Gain depending on the Electric Field Distribution Tomokazu Oda (NTT), Hiroshi Takahashi (NTT East), Kunihiro Toge, Tetsuya Manabe (NTT) OFT2018-6 |
Mode division multiplexing technique has been intensively studied for realization of large capacity optical communicatio... [more] | OFT2018-6 pp.1-4 |
| OFT | 2017-05-25 14:30 |
Shimane | Shimane Univ. (Matsue campus) | Simplified and high speed BOTDA employing frequency-swept pulses Chihiro Kito, Hiroshi Takahashi, Kunihiro Toge, Tetsuya Manabe (NTT) OFT2017-2 |
In recent years, research on optical measurement technology using Brillouin scattering capable of measuring temperature ... [more] | OFT2017-2 pp.7-10 |
| OCS, OFT, OPE (Joint) [detail] |
2017-02-17 10:45 |
Osaka | Osaka Prefecture University(I-site Nanba) | Transient Dynamics of Brillouin Acoustic Wave on Frequency Swept Pulse for Fiber Loss Monitoring Hiroshi Takahashi, Kunihiro Toge, Chihiro Kito, Manabe Tetsuya (NTT) OFT2016-52 OPE2016-169 |
We have proposed pulsed pump-probe Brillouin optical time domain analysis (ERA-BOTDA) for optical fiber loss measurement... [more] | OFT2016-52 OPE2016-169 pp.39-44(OFT), pp.49-54(OPE) |
| OFT, OCS, IEE-CMN, ITE-BCT [detail] | 2016-11-11 13:10 |
Nagasaki | Nagasaki Shoko Kaigi Sho | Brillouin dynamic strain measurement employing frequency-swept pulses Chihiro Kito, Hiroshi Takahashi, Kunihiro Toge, Tetsuya Manabe (NTT) OFT2016-32 |
Recently, a lot of Brillouin-based fast sensing schemes were reported aiming to apply to social structure health monitor... [more] | OFT2016-32 pp.41-44 |
| OFT, OCS (Joint) |
2015-08-28 10:50 |
Hokkaido | Field demonstration of PON monitoring by end-reflection assisted Brillouin analysis Chihiro Kito, Hiroshi Takahashi, Kunihiro Toge, Tetsuya Manabe (NTT) OFT2015-23 |
Recently, we proposed individual loss distribution measurement method “end-reflection assisted Brillouin analysis” for P... [more] | OFT2015-23 pp.39-42 |
|
| OFT, PEM (Joint) |
2015-05-21 13:35 |
Ishikawa | Deformation of Brillouin gain spectrum shape under temporally linear strain Hiroshi Naruse, Ayako Komatsu (Mie Univ.), Mitsuhiro Tateda (Chiba Univ.) OFT2015-2 |
The shape of the Brillouin gain spectrum (BGS) in an optical fiber under temporally linear strain (a strain that varies ... [more] | OFT2015-2 pp.7-10 |
|
| OFT | 2014-10-23 16:15 |
Hyogo | High Reliability Branched Fiber Sensing with Multi-probe Pulse End-reflection Assisted Brillouin Analysis Chihiro Kito (NTT), Fumihiko Ito (Shimane Univ.), Hiroshi Takahashi, Kunihiro Toge, Tetsuya Manabe (NTT) OFT2014-29 |
Recently, we proposed end-reflection assisted Brillouin analysis to aim for monitoring branched fiber loss distribution ... [more] | OFT2014-29 pp.33-38 |
|
| OFT | 2013-10-24 16:40 |
Nara | Splice Loss Measurement Using End-reflection Assisted Brillouin Analysis Hiroshi Takahashi, Kunihiro Toge, Fumihiko Ito, Chihiro Kito (NTT) OFT2013-30 |
In deployed FTTH networks, bending insensitive fibres (BIFs) standardized by ITU-T G. 657 have been employed to optimise... [more] | OFT2013-30 pp.39-42 |
|
| OFT, OCS (Joint) |
2013-08-23 09:25 |
Hokkaido | End Reflection Assisted Brillouin Analysis for Monitoring PONs with Frequency-coded Pulse Train Chihiro Kito, Fumihiko Ito, Hiroshi Takahashi, Kunihiro Toge (NTT) OFT2013-17 |
We have proposed a PON fault location technique that uses end reflection beam and Brillouin gain analysis, which can loc... [more] | OFT2013-17 pp.21-24 |
|
| OFT | 2012-10-25 14:30 |
Yamaguchi | KAIKYO MESSE SHIMONOSEKI | Deformation of Brillouin gain spectrum by sinusoidal-like strain distribution Yoshiki Hayase, Hiroshi Naruse (Mie Univ.) OFT2012-32 |
As the first step, to apply fiber optic strain measurement based on the strain dependence of the Brillouin gain spectrum... [more] | OFT2012-32 pp.1-6 |
| OFT | 2012-10-26 09:50 |
Yamaguchi | KAIKYO MESSE SHIMONOSEKI | Individual Distribution Measurement in 32-branched PON Using Pulsed-Pump-Probe Brillouin Gain Analysis Hiroshi Takahashi, Xinyu Fan, Fumihiko Ito (NTT) OFT2012-42 |
A fault location technique for PONs is essential for improving the service reliability of optical fiber networks. OTDR i... [more] | OFT2012-42 pp.51-54 |
| OPE, OFT | 2012-03-02 10:55 |
Tokyo | Individual Distribution Measurement in PON Using Pulsed-Pump-Probe Brillouin Gain Analysis Hiroshi Takahashi, Xinyu Fan, Yusuke Koshikiya, Fumihiko Ito (NTT) OFT2011-76 OPE2011-202 |
A fault location technique for PONs is essential for improving the service reliability of optical fiber networks. OTDR i... [more] | OFT2011-76 OPE2011-202 pp.19-22 |
|
| OFT, OPE | 2011-03-04 11:30 |
Tokyo | Kikai-Shinko-Kaikan Bldg. | Circular ring diameter change measurement by Brillouin gain spectrum observation Tomoaki Hattori, Hiroshi Naruse, Takanori Nishino (Mie Univ.) OFT2010-68 OPE2010-172 |
This paper presents a method for measuring the change in diameter of a circular ring to which an external force is appl... [more] |
OFT2010-68 OPE2010-172 pp.27-30 |
| OFT, OCS (Joint) |
2007-08-24 13:25 |
Hokkaido | Optical Fiber Design for Brillouin-scattering-Based Discriminative Sensing of Strain and Temperature Weiwen Zou, Zuyuan He, Kazuo Hotate (Univ. of Tokyo) OFT2007-30 |
We demonstrate the theoretical analysis of Brillouin gain spectra (BGS) in high-delta fibers with F-doped inner cladding... [more] | OFT2007-30 pp.89-94 |
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