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| Presentation | 2009-05-29 09:55 Optical Coherence Domain Reflectometry Using Optical Frequency Comb Zuyuan He, Hiroshi Takahashi, Kazuo Hotate (The Univ. of Tokyo)  OFT2009-12 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Various kinds of optical fiber reflectometries are developed with rapidly improved performance as a technology to diagnose the breakdown points in fiber optic networks/devices. As a unique technique, the reflectometry by synthesis of optical coherence function (SOCF) has been studied intensively in this laboratory. So far, km-order measurement range, cm-order spatial resolution, 45-dB dynamic range, and less-than-5-second measurement time have been achieved in the reflectometry by SOCF. However, these performances cannot be realized at the same time, mainly due to the modulation schemes of the light source: sinusoidal modulation or stepwise modulation. In this report, we propose an optical coherence domain reflectometry (OCDR) using an optical frequency comb as the light source, which enables high spatial resolution, large dynamic range, and fast measurement speed at the same time. The comb interval of the optical frequency comb used for this proposed technique should be adjustable over broad range. To do so, optical frequency comb whose comb interval is changeable was generated by using a fiber ring resonator and a phase modulator. The comb interval was able to be changed from 40 MHz to 80 MHz. In basic experiments, we succeeded in measuring the reflectivity of adjacent PC and APC connectors that was not able to be measured with a reflectometry by sinusoidal modulation SOCF due to insufficient dynamic range. In the experiment on OCDR using optical frequency comb, we succeeded in reflectivity distribution measurement with 5-cm spatial resolution, over 45-dB dynamic range, and 10-second measurement time at the same time. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | optical reflectometry / optical coherence / OCDR / optical frequency comb / reflectivity / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 59, OFT2009-12, pp. 55-60, May 2009. | |
| Paper # | OFT2009-12 | |
| Date of Issue | 2009-05-21 (OFT) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | OFT2009-12 |
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| Conference Information | |
| Committee | OFT |
| Conference Date | 2009-05-28 - 2009-05-29 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | OFT |
| Conference Code | 2009-05-OFT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Optical Coherence Domain Reflectometry Using Optical Frequency Comb |
| Sub Title (in English) | |
| Keyword(1) | optical reflectometry |
| Keyword(2) | optical coherence |
| Keyword(3) | OCDR |
| Keyword(4) | optical frequency comb |
| Keyword(5) | reflectivity |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Zuyuan He |
| 1st Author's Affiliation | The University of Tokyo (The Univ. of Tokyo) |
| 2nd Author's Name | Hiroshi Takahashi |
| 2nd Author's Affiliation | The University of Tokyo (The Univ. of Tokyo) |
| 3rd Author's Name | Kazuo Hotate |
| 3rd Author's Affiliation | The University of Tokyo (The Univ. of Tokyo) |
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| Speaker | Author-2 |
| Date Time | 2009-05-29 09:55:00 |
| Presentation Time | 25 minutes |
| Registration for | OFT |
| Paper # | OFT2009-12 |
| Volume (vol) | vol.109 |
| Number (no) | no.59 |
| Page | pp.55-60 |
| #Pages | 6 |
| Date of Issue | 2009-05-21 (OFT) |
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