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| Presentation | 2005-02-18 16:10 Bandwidth-adjustable optical filter based on dynamic grating in Erbium-doped fiber with synthesis of optical coherence function Xinyu Fan, Yosuke Mizuno, Zuyuan He, Kazuo Hotate (Univ. of Tokyo) Link to ES Tech. Rep. Archives:  OPE2004-225 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | When two counter-propagating coherent light beams are launched into the pumped erbium-doped fiber (EDF), they will interfere and form standing-waves in the fiber and hence produce a dynamic grating per the phenomenon of gain saturation. A probing beam will be reflected from the induced dynamic grating when it has the same frequency as the writing beams. Based on the dynamic grating, we propose and realize a bandwidth-adjustable optical filter with synthesis of optical coherence function (SOCF). With the technique of SOCF, we can localize the interference into a short range at an arbitrary position along the fiber. In this way, the dynamic grating can be localized at a small region where the interference takes place corresponding to the peak of the coherence function. By controlling the width of coherence peak along the EDF, the reflection bandwidth is therefore adjusted since it is inversely proportional to the length of the grating. Our experiment results show that the reflection bandwidth becomes wider when we use larger modulation amplitude of the frequency modulation of light source for writing beams, which corresponds to shorter grating length. Hence, bandwidth-adjustable optical filter is realized by localizing dynamic grating in EDF with the technique of SOCF. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | bandwidth-adjustable optical filter / erbium doped fiber / synthesis of optical coherence function / / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 104, no. 663, OPE2004-225, pp. 43-48, Feb. 2005. | |
| Paper # | OPE2004-225 | |
| Date of Issue | 2005-02-11 (OPE) | |
| ISSN | Print edition: ISSN 0913-5685 | |
| 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 | Link to ES Tech. Rep. Archives: OPE2004-225 |
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| Conference Information | |
| Committee | OPE |
| Conference Date | 2005-02-18 - 2005-02-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Photonic sensing, Optical wave control and detection, optical measurements, neuro, and others |
| Paper Information | |
| Registration To | OPE |
| Conference Code | 2005-02-OPE |
| Language | English (Japanese title is available) |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Bandwidth-adjustable optical filter based on dynamic grating in Erbium-doped fiber with synthesis of optical coherence function |
| Sub Title (in English) | |
| Keyword(1) | bandwidth-adjustable optical filter |
| Keyword(2) | erbium doped fiber |
| Keyword(3) | synthesis of optical coherence function |
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| 1st Author's Name | Xinyu Fan |
| 1st Author's Affiliation | The University of Tokyo (Univ. of Tokyo) |
| 2nd Author's Name | Yosuke Mizuno |
| 2nd Author's Affiliation | The University of Tokyo (Univ. of Tokyo) |
| 3rd Author's Name | Zuyuan He |
| 3rd Author's Affiliation | The University of Tokyo (Univ. of Tokyo) |
| 4th Author's Name | Kazuo Hotate |
| 4th Author's Affiliation | The University of Tokyo (Univ. of Tokyo) |
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| Speaker | Author-1 |
| Date Time | 2005-02-18 16:10:00 |
| Presentation Time | 25 minutes |
| Registration for | OPE |
| Paper # | OPE2004-225 |
| Volume (vol) | vol.104 |
| Number (no) | no.663 |
| Page | pp.43-48 |
| #Pages | 6 |
| Date of Issue | 2005-02-11 (OPE) |
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