| Presentation | 1998/5/11 FMCW Reflectometry for Optical Fiber Diagnosis Using an External-Cavity Laser Diode Koichi IIYAMA, Shotaro ITAKURA, Takahiro MAEDA, Shoshin HASHIMOTO, Saburo TAKAMIYA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We describe FMCW reflectometry for optical fiber diagnosis using an external-cavity laser diode. In this system, the optical path difference between the reference beam and the reflected beam from the optical fiber under test is longer than the coherence length of the light source, and the beat spectrum between them is measured. The spatial resolution can be enhanced with narrowing the spectral linewidth of the light source and/or with increasing the repetition frequency of the optical frequency sweep. In the experiments, an external-cavity laser diode was used as the light source, and the spatial resolution of 23 m at the far end of a 5 km-long optical fiber was achieved. The beat spectrum was calculated by taking account of the phase fluctuation of the light source, and the calculated spectrum agreed with the measured spectrum. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Optical interferometric sensor / FMCW reflectometry / Laser diode / Modulation |
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| Committee | LQE |
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| Conference Date | 1998/5/11(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| 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) | FMCW Reflectometry for Optical Fiber Diagnosis Using an External-Cavity Laser Diode |
| Sub Title (in English) | |
| Keyword(1) | Optical interferometric sensor |
| Keyword(2) | FMCW reflectometry |
| Keyword(3) | Laser diode |
| Keyword(4) | Modulation |
| 1st Author's Name | Koichi IIYAMA |
| 1st Author's Affiliation | Faculty of Engineering, Kanazawa University() |
| 2nd Author's Name | Shotaro ITAKURA |
| 2nd Author's Affiliation | Faculty of Engineering, Kanazawa University |
| 3rd Author's Name | Takahiro MAEDA |
| 3rd Author's Affiliation | Faculty of Engineering, Kanazawa University |
| 4th Author's Name | Shoshin HASHIMOTO |
| 4th Author's Affiliation | Faculty of Engineering, Kanazawa University |
| 5th Author's Name | Saburo TAKAMIYA |
| 5th Author's Affiliation | Faculty of Engineering, Kanazawa University |
| Date | 1998/5/11 |
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| Volume (vol) | vol.98 |
| Number (no) | 41 |
| Page | pp.pp.- |
| #Pages | 6 |
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