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| Presentation | 2005-11-04 11:15 A numerical study on the stability of pulse generation in harmonic mode-locked fiber ring lasers -- Effect of group delay of optical bandpass filter -- Masakazu Matsuo, Yuya Ishida, Yutaka Fukuchi, Joji Maeda (Tokyo University of science) Link to ES Tech. Rep. Archives:  OPE2005-92 LQE2005-100 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Pulse oscillatory motions of a harmonically mode-locked fiber ring laser are numerically studied. We employ a simulation model incorporating an optical variable delay in the laser cavity. Varying the optical delay, we find that the generated optical field significantly changes according both to the bandwidth of the wavelength selecting filter and to the unsaturated gain of the amplifying section. In the case of a narrow filter bandwidth and a small unsaturated gain, the exact syncronization between the modulation signal and the optical field can result in pulse drop-outs. Slight detuning in this case will limit the energy of developing pulses and can stabilize the pulse train as a whole. On the other hand, the exact synchronization is necessary for a wide filter bandwidth: bacause of the fiber nonlinearity, the lack of the synchronization can lead to an unstable motion of the pulses. In the case of a narrow filter bandwidth, the increase in the unsaturated fain excludes the pulse drop-outs and enlarges the synchronization range of the delay. On the contrary, in the case of a wide filter bandwidth, the gain increase results in narrowing the syncronization range because of the increase in the nonlinearity. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Fiber lasers / Mode-locked lasers / Harmonically mode-locking / Group delay / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 105, no. 380, OCS2005-62, pp. 27-32, Nov. 2005. | |
| Paper # | OCS2005-62 | |
| Date of Issue | 2005-10-28 (OCS, OPE, LQE) | |
| 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: OPE2005-92 LQE2005-100 |
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| Conference Information | |
| Committee | OCS OPE LQE |
| Conference Date | 2005-11-03 - 2005-11-04 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Ultra-high-speed transmission, modulation technologies, Ultra-high-speed optical / electrical devices, wideband WDM devices |
| Paper Information | |
| Registration To | OCS |
| Conference Code | 2005-11-OCS-OPE-LQE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A numerical study on the stability of pulse generation in harmonic mode-locked fiber ring lasers |
| Sub Title (in English) | Effect of group delay of optical bandpass filter |
| Keyword(1) | Fiber lasers |
| Keyword(2) | Mode-locked lasers |
| Keyword(3) | Harmonically mode-locking |
| Keyword(4) | Group delay |
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| 1st Author's Name | Masakazu Matsuo |
| 1st Author's Affiliation | Tokyo University of Science (Tokyo University of science) |
| 2nd Author's Name | Yuya Ishida |
| 2nd Author's Affiliation | Tokyo University of Science (Tokyo University of science) |
| 3rd Author's Name | Yutaka Fukuchi |
| 3rd Author's Affiliation | Tokyo University of Science (Tokyo University of science) |
| 4th Author's Name | Joji Maeda |
| 4th Author's Affiliation | Tokyo University of Science (Tokyo University of science) |
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| Speaker | Author-1 |
| Date Time | 2005-11-04 11:15:00 |
| Presentation Time | 25 minutes |
| Registration for | OCS |
| Paper # | OCS2005-62, OPE2005-92, LQE2005-100 |
| Volume (vol) | vol.105 |
| Number (no) | no.380(OCS), no.382(OPE), no.384(LQE) |
| Page | pp.27-32 |
| #Pages | 6 |
| Date of Issue | 2005-10-28 (OCS, OPE, LQE) |
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