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| Presentation | 2010-08-27 17:45 Incident-Power-Dependent Extinction Ratio of 1.3-um Electroabsorption Modulator Integrated with DFB laser: Theory and Experiment Takeshi Fujisawa, Takayuki Yamanaka, Takashi Tadokoro, Naoki Fujiwara, Masakazu Arai, Wataru Kobayashi, Yoshihiro Kawaguchi, Ken Tsuzuki, Fumiyoshi Kano (NTT)  EMD2010-61 CPM2010-77 OPE2010-86 LQE2010-59 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We have found that the extinction ratio of an electroabsorption modulator integrated with DFB laser strongly depends on the incident power to the modulator. Our theoretical consideration based on the full device simulation reveals that the temperature change in the modulator dominates the phenomenon. To obtain the intrinsic extinction characteristics of the modulator, a microscopic theory, which takes into account quantum mechanical many-body interactions in semiconductors, is used to exclude unknown experimental fitting parameters. Heat-flux analysis is performed for the calculation of the temperature distribution in the entire device. As the incident power to the modulator increases, the photo-current is also increased, leading to the increase in the temperature of the modulator by some tens of degrees Celsius induced by Joule heating. The increase red-shifts the absorption spectrum of the modulator and the detuning, which is the difference between a lasing wavelength and a band-edge wavelength of the modulator, becomes small, leading to larger extinction ratio. Calculated results are in good agreement with the experiment showing the validity of our discussion, and indicate that the extinction ratio of electroabsorption modulators is strongly affected by the internal heating of the device. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Electroabsorption modulator / quantum well / many-body theory / heat-flux analysis / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 110, no. 181, LQE2010-59, pp. 163-168, Aug. 2010. | |
| Paper # | LQE2010-59 | |
| Date of Issue | 2010-08-19 (EMD, CPM, OPE, LQE) | |
| 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 | EMD2010-61 CPM2010-77 OPE2010-86 LQE2010-59 |
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| Conference Information | |
| Committee | EMD OPE LQE CPM |
| Conference Date | 2010-08-26 - 2010-08-27 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Chitose Arcadia Plaza |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | LQE |
| Conference Code | 2010-08-EMD-OPE-LQE-CPM |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Incident-Power-Dependent Extinction Ratio of 1.3-um Electroabsorption Modulator Integrated with DFB laser: Theory and Experiment |
| Sub Title (in English) | |
| Keyword(1) | Electroabsorption modulator |
| Keyword(2) | quantum well |
| Keyword(3) | many-body theory |
| Keyword(4) | heat-flux analysis |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Takeshi Fujisawa |
| 1st Author's Affiliation | NTT Photonics Laboratories (NTT) |
| 2nd Author's Name | Takayuki Yamanaka |
| 2nd Author's Affiliation | NTT Photonics Laboratories (NTT) |
| 3rd Author's Name | Takashi Tadokoro |
| 3rd Author's Affiliation | NTT Photonics Laboratories (NTT) |
| 4th Author's Name | Naoki Fujiwara |
| 4th Author's Affiliation | NTT Photonics Laboratories (NTT) |
| 5th Author's Name | Masakazu Arai |
| 5th Author's Affiliation | NTT Photonics Laboratories (NTT) |
| 6th Author's Name | Wataru Kobayashi |
| 6th Author's Affiliation | NTT Photonics Laboratories (NTT) |
| 7th Author's Name | Yoshihiro Kawaguchi |
| 7th Author's Affiliation | NTT Photonics Laboratories (NTT) |
| 8th Author's Name | Ken Tsuzuki |
| 8th Author's Affiliation | NTT Photonics Laboratories (NTT) |
| 9th Author's Name | Fumiyoshi Kano |
| 9th Author's Affiliation | NTT Photonics Laboratories (NTT) |
| Speaker | Author-1 |
| Date Time | 2010-08-27 17:45:00 |
| Presentation Time | 25 minutes |
| Registration for | LQE |
| Paper # | EMD2010-61, CPM2010-77, OPE2010-86, LQE2010-59 |
| Volume (vol) | vol.110 |
| Number (no) | no.178(EMD), no.179(CPM), no.180(OPE), no.181(LQE) |
| Page | pp.163-168 |
| #Pages | 6 |
| Date of Issue | 2010-08-19 (EMD, CPM, OPE, LQE) |
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