| Presentation | 1998/9/10 Low Coherence interferometric fiber sensing using acoustooptic Toshihiko Yoshino, P.G. Sinha, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have utilized a traveling acoustic pulse in a two-mode optical fiber to create a moving beam splitter to couple light from LP_<01> to LP_<11> mode. As these optical modes have different group velocities, a variable intermodal delay is generated as a function acoustic pulse position in the fiber. The device can be used in low-coherence interferometry to scan time delay for making fast extended range absolute measurement using simple analog electronic circuits. With this scanning technique we demonstrate measurement of absolute strain over 1600 με in the temperature range 20-60 ℃ with resolutions of the order of 40 με and 0.7 ℃, respectively, employing highly birefringent fibers as sensing elements. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Low-coherence interferometry / Two-mode fiber / Acoustooptic mode coupling Time delay scanning / Absolute measurement / Fiber-optic temperature and strain discriminative sensing / HiBi fiber |
| Paper # | OFT98-22 |
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| Conference Information | |
| Committee | OFT |
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| Conference Date | 1998/9/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
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| Paper Information | |
| Registration To | Optical Fiber Technology (OFT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Low Coherence interferometric fiber sensing using acoustooptic |
| Sub Title (in English) | |
| Keyword(1) | Low-coherence interferometry |
| Keyword(2) | Two-mode fiber |
| Keyword(3) | Acoustooptic mode coupling Time delay scanning |
| Keyword(4) | Absolute measurement |
| Keyword(5) | Fiber-optic temperature and strain discriminative sensing |
| Keyword(6) | HiBi fiber |
| 1st Author's Name | Toshihiko Yoshino |
| 1st Author's Affiliation | Department of Electronic Engineering, Faculty of Engineering, Gunma University() |
| 2nd Author's Name | P.G. Sinha |
| 2nd Author's Affiliation | Department of Electronic Engineering, Faculty of Engineering, Gunma University |
| Date | 1998/9/10 |
| Paper # | OFT98-22 |
| Volume (vol) | vol.98 |
| Number (no) | 265 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |