| Presentation | 2008-08-28 Proposal of DisplacementSensing by Delayed Transmission/Reflection Ratiometric Sensor Seiichi ONODA, Masayuki NAKANO, Keiichi INOUE, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have been investigating push-pull ratiometric optical fiber interrogating systems based on PNCR (PN-code Correlation Reflectometry). PNCR realizes a wide dynamic range without using a high power light source. Push-pull ratiometry can facilitate robust interrogation against disturbances such as drift of electronics or insertion loss in an optical fiber. As part of system variations, we propose another system; Delayed Transmission/Reflection Ratiometry, we propose a novel reflection sensor unit, which can be supported by OTDR based on PNCR. The sensor unit consists of a transmission/reflection sensor (TR sensor), a dummy fiber and an isolator. Transmission and reflection output of the TR sensor are assumed to change in push-pull manner according to implied physical amount. If transmission or reflection path is given a propagation delay, they can be detected simultaneously in time domain by OTDR. The physical amount can be measured from the ratio of transmittance and reflectance. A displacement sensor system is manufactured and its sensing operation is confirmed experimentally. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Fiber sencing / PN-code Correlation Reflectometry / push-pull ratiometry / Beam cut / Displacement Sensing |
| Paper # | EMD2008-35,CPM2008-50,OPE2008-65,LQE2008-34 |
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| Conference Information | |
| Committee | LQE |
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| Conference Date | 2008/8/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Lasers and Quantum Electronics (LQE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Proposal of DisplacementSensing by Delayed Transmission/Reflection Ratiometric Sensor |
| Sub Title (in English) | |
| Keyword(1) | Fiber sencing |
| Keyword(2) | PN-code Correlation Reflectometry |
| Keyword(3) | push-pull ratiometry |
| Keyword(4) | Beam cut |
| Keyword(5) | Displacement Sensing |
| 1st Author's Name | Seiichi ONODA |
| 1st Author's Affiliation | Watanabe Co., Ltd.() |
| 2nd Author's Name | Masayuki NAKANO |
| 2nd Author's Affiliation | Watanabe Co., Ltd. |
| 3rd Author's Name | Keiichi INOUE |
| 3rd Author's Affiliation | Watanabe Co., Ltd. |
| Date | 2008-08-28 |
| Paper # | EMD2008-35,CPM2008-50,OPE2008-65,LQE2008-34 |
| Volume (vol) | vol.108 |
| Number (no) | 194 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |