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| Presentation | 2021-10-22 16:55 Theoretical and Experimental Investigation of OMA Penalty by Inter-Arm Imbalance in Mach-Zehnder Silicon Optical Modulators Tadashi Murao, Jun Ushida, Hiroyuki Takahashi, Masatoshi Tokushima, Akemi Shiina, Tsuyoshi Horikawa (PETRA)  OCS2021-19 OPE2021-39 LQE2021-18 Link to ES Tech. Rep. Archives: OPE2021-39 LQE2021-18 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this paper, an inter-arm imbalance and its impact on the optical modulation amplitude (OMA) are investigated for carrier-depletion Mach-Zehnder (MZ) silicon optical modulators. First, we propose a generalized form of the large-signal modulation efficiency (ME) that takes the nonlinear response to the voltages into account. It is revealed that this beneficial expression can serve as characterizing the inter-arm imbalance effectively and that the imbalance causes a push-pull imbalance. A beneficial quantification of the imbalance is proposed, namely, a push-pull-imbalanced penalty (PPIP), which is associated with the impact on device performance. The evaluation of the PPIP is demonstrated for the fabricated modulators on a 300-mm SOI wafer. The validity of the derivation is also confirmed by establishing a wafer-level fully-automated evaluation technique for the extinction ratio. Then, it is shown that another inter-arm imbalance also causes an OMA penalty in terms of the absorption loss and is quantified, namely, an absorption-loss-imbalanced penalty (ALIP). In order to evaluate this, we establish a methodology to measure the absorption loss in each arm separately without exploiting any special test element groups (TEGs). | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Wafer-level testing / Silicon modulator / Modulation efficiency / Optical modulation amplitude / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 214, OPE2021-39, pp. 33-38, Oct. 2021. | |
| Paper # | OPE2021-39 | |
| Date of Issue | 2021-10-15 (OCS, OPE, LQE) | |
| ISSN | 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 | OCS2021-19 OPE2021-39 LQE2021-18 Link to ES Tech. Rep. Archives: OPE2021-39 LQE2021-18 |
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| Conference Information | |
| Committee | OCS OPE LQE |
| Conference Date | 2021-10-22 - 2021-10-22 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | OPE |
| Conference Code | 2021-10-OCS-OPE-LQE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Theoretical and Experimental Investigation of OMA Penalty by Inter-Arm Imbalance in Mach-Zehnder Silicon Optical Modulators |
| Sub Title (in English) | |
| Keyword(1) | Wafer-level testing |
| Keyword(2) | Silicon modulator |
| Keyword(3) | Modulation efficiency |
| Keyword(4) | Optical modulation amplitude |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Tadashi Murao |
| 1st Author's Affiliation | Photonics Electronics Technology Research Association (PETRA) |
| 2nd Author's Name | Jun Ushida |
| 2nd Author's Affiliation | Photonics Electronics Technology Research Association (PETRA) |
| 3rd Author's Name | Hiroyuki Takahashi |
| 3rd Author's Affiliation | Photonics Electronics Technology Research Association (PETRA) |
| 4th Author's Name | Masatoshi Tokushima |
| 4th Author's Affiliation | Photonics Electronics Technology Research Association (PETRA) |
| 5th Author's Name | Akemi Shiina |
| 5th Author's Affiliation | Photonics Electronics Technology Research Association (PETRA) |
| 6th Author's Name | Tsuyoshi Horikawa |
| 6th Author's Affiliation | Photonics Electronics Technology Research Association (PETRA) |
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| Speaker | Author-1 |
| Date Time | 2021-10-22 16:55:00 |
| Presentation Time | 25 minutes |
| Registration for | OPE |
| Paper # | OCS2021-19, OPE2021-39, LQE2021-18 |
| Volume (vol) | vol.121 |
| Number (no) | no.213(OCS), no.214(OPE), no.215(LQE) |
| Page | pp.33-38 |
| #Pages | 6 |
| Date of Issue | 2021-10-15 (OCS, OPE, LQE) |
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