| Presentation | 2010-01-21 Optical Reflectometry Using Optical Frequency Comb with Multi-Phase Modulation Hiroshi Takahashi, Zuyuan He, Kazuo Hotate, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | As a technology to diagnose the breakdown points in fiber optic networks/devices, various kinds of optical fiber reflectometry have been developed with rapidly improved performance. We proposed an optical coherence domain reflectometry using optical frequency comb (OCDR-OFC), which enables high spatial resolution, large dynamic range, and fast measurement speed at the same time. We succeeded in measuring the reflectivity distribution with 2-cm spatial resolution, over 35-dB dynamic range, and 10-s measurement time. However, the measurement range of OCDR-OFC is currently limited to 1.25-m measurement range as the trade off between spatial resolution and measurement range. In this paper, we propose and demonstrate a novel optical frequency comb generation method with multi-phase modulation to increase the sideband number of generated optical frequency comb. In this basic experiment, we first generate the optical frequency comb using multi-phase modulation. Then we measure the reflectivity profile with the generated optical frequency comb. In the experiment on OCDR using optical frequency comb with multi-phase modulation, we succeeded in demonstrating reflectivity distribution measurement with 5-cm spatial resolution, over 45-dB dynamic range, 10-s measurement time, and 12-m measurement range at the same time. We showed the possibility of the measurement range elongation in a high spatial resolution reflectometry. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | optical reflectometry / optical coherence / optical frequency comb / multi-phase modulation / reflectivity |
| Paper # | OFT2009-72 |
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| Conference Information | |
| Committee | OFT |
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| Conference Date | 2010/1/14(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| 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) | Optical Reflectometry Using Optical Frequency Comb with Multi-Phase Modulation |
| Sub Title (in English) | |
| Keyword(1) | optical reflectometry |
| Keyword(2) | optical coherence |
| Keyword(3) | optical frequency comb |
| Keyword(4) | multi-phase modulation |
| Keyword(5) | reflectivity |
| 1st Author's Name | Hiroshi Takahashi |
| 1st Author's Affiliation | Department of Electrical Engineering and Information Systems, The University of Tokyo() |
| 2nd Author's Name | Zuyuan He |
| 2nd Author's Affiliation | Department of Electrical Engineering and Information Systems, The University of Tokyo |
| 3rd Author's Name | Kazuo Hotate |
| 3rd Author's Affiliation | Department of Electrical Engineering and Information Systems, The University of Tokyo |
| Date | 2010-01-21 |
| Paper # | OFT2009-72 |
| Volume (vol) | vol.109 |
| Number (no) | 377 |
| Page | pp.pp.- |
| #Pages | 6 |
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