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| Presentation | 2014-10-30 17:45 Bend Loss Reduction of a Buried Waveguide Using Reflection Waves Generated from Cladding Interfaces Baku Yatabe, Yuta Nito, Junji Yamauchi, Hisamatsu Nakano (Hosei Univ.)  OCS2014-57 OPE2014-101 LQE2014-75 Link to ES Tech. Rep. Archives: OPE2014-101 LQE2014-75 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | We develop a new technique for reducing the bend loss in a buried waveguide using the semivectorial finite-difference beam-propagation method.It is numerically shown that a core embedded near the air region allows us to reduce the pure bend loss.Since the leaky wave caused by the bend extends as it propagates towards the outer side of the bend, a portion of the wave is reflected at the upper interface between the cladding and the air region. The reflected wave coming back to the cladding interferes with the original leaky wave, so that the resultant wave is significantly reduced depending on the phase relation between the original and reflected waves.In addition, the eigenmode field whose leaky wave is suppressed is confined well in the core, so that the transition loss is reduced.A similar situation is also expected for the wave reflected from the silicon substrate.As a result, a proper choice of the core location leads to remarkable loss reduction over a wide spectral range from 1.3 to 1.65~$mu{rm m}$. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Bent optical waveguide / Pure bend loss / Transition loss / Beam-propagation method (BPM) / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 114, no. 282, OPE2014-101, pp. 81-86, Oct. 2014. | |
| Paper # | OPE2014-101 | |
| Date of Issue | 2014-10-23 (OCS, 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 | OCS2014-57 OPE2014-101 LQE2014-75 Link to ES Tech. Rep. Archives: OPE2014-101 LQE2014-75 |
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| Conference Information | |
| Committee | OCS OPE LQE |
| Conference Date | 2014-10-30 - 2014-10-31 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Nagasaki Museum of History and Culture |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | OPE |
| Conference Code | 2014-10-OCS-OPE-LQE |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Bend Loss Reduction of a Buried Waveguide Using Reflection Waves Generated from Cladding Interfaces |
| Sub Title (in English) | |
| Keyword(1) | Bent optical waveguide |
| Keyword(2) | Pure bend loss |
| Keyword(3) | Transition loss |
| Keyword(4) | Beam-propagation method (BPM) |
| Keyword(5) | |
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| 1st Author's Name | Baku Yatabe |
| 1st Author's Affiliation | Hosei University (Hosei Univ.) |
| 2nd Author's Name | Yuta Nito |
| 2nd Author's Affiliation | Hosei University (Hosei Univ.) |
| 3rd Author's Name | Junji Yamauchi |
| 3rd Author's Affiliation | Hosei University (Hosei Univ.) |
| 4th Author's Name | Hisamatsu Nakano |
| 4th Author's Affiliation | Hosei University (Hosei Univ.) |
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| Speaker | Author-1 |
| Date Time | 2014-10-30 17:45:00 |
| Presentation Time | 25 minutes |
| Registration for | OPE |
| Paper # | OCS2014-57, OPE2014-101, LQE2014-75 |
| Volume (vol) | vol.114 |
| Number (no) | no.281(OCS), no.282(OPE), no.283(LQE) |
| Page | pp.81-86 |
| #Pages | 6 |
| Date of Issue | 2014-10-23 (OCS, OPE, LQE) |
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