| Presentation | 2020-10-08 [Poster Presentation] Arbitrary-wavelength operation of FBGs inscribed in plastic optical fibers Naoki Motoishi, Kohei Noda, Heeyoung Lee, Antreas Theodosiou, Kyriacos Kalli, Kentaro Nakamura, Yosuke Mizuno, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Strain can be detected at high speed using a fiber Bragg gratings (FBG) by measuring the optical power fluctuations at the central wavelength of the slope of the reflected spectrum, instead of measuring the Bragg wavelength shift directly. In this high-speed strain detection, a narrow-linewidth laser with a wavelength at the center of the slope is generally used, but the accurate pre-design of the inscription pitch of the FBG leads to its high fabrication cost. In this work, using an FBG inscribed in a perfluorinated graded-index plastic optical fiber (multimode fiber), we show that Bragg wavelengths appear in arbitrary wavelength ranges of the reflection spectrum. This unique behavior can be obtained by suppressing the excitation of the fundamental propagation mode and promoting the excitation of the higher modes. We experimentally show that, by exploiting this feature, high-speed strain measurement can be performed at almost arbitrary wavelengths. We also investigate the wavelength dependence of the vibration sensing performance (sensitivity, etc). |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | optical fiber sensing / fiber Bragg gratings (FBGs) / strain sensors / vibration sensors / plastic optical fibers |
| Paper # | OFT2020-18 |
| Date of Issue | 2020-10-01 (OFT) |
| Conference Information | |
| Committee | OFT |
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| Conference Date | 2020/10/8(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Yuji Matsuura(Tohoku Univ.) |
| Vice Chair | |
| Secretary | (NTT) |
| Assistant | Hajime Arao(Sumitomo Electric) / Yukihiro Goto(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Optical Fiber Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] Arbitrary-wavelength operation of FBGs inscribed in plastic optical fibers |
| Sub Title (in English) | |
| Keyword(1) | optical fiber sensing |
| Keyword(2) | fiber Bragg gratings (FBGs) |
| Keyword(3) | strain sensors |
| Keyword(4) | vibration sensors |
| Keyword(5) | plastic optical fibers |
| 1st Author's Name | Naoki Motoishi |
| 1st Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| 2nd Author's Name | Kohei Noda |
| 2nd Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| 3rd Author's Name | Heeyoung Lee |
| 3rd Author's Affiliation | Shibaura Institute of Technology(SIT) |
| 4th Author's Name | Antreas Theodosiou |
| 4th Author's Affiliation | Cyprus University of Technology(CUT) |
| 5th Author's Name | Kyriacos Kalli |
| 5th Author's Affiliation | Cyprus University of Technology(CUT) |
| 6th Author's Name | Kentaro Nakamura |
| 6th Author's Affiliation | Tokyo Institute of Technology(Tokyo Tech) |
| 7th Author's Name | Yosuke Mizuno |
| 7th Author's Affiliation | Yokohama National University(YNU) |
| Date | 2020-10-08 |
| Paper # | OFT2020-18 |
| Volume (vol) | vol.120 |
| Number (no) | OFT-184 |
| Page | pp.pp.37-40(OFT), |
| #Pages | 4 |
| Date of Issue | 2020-10-01 (OFT) |