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Paper Abstract and Keywords
Presentation 2017-01-19 14:35
A Proposal of Low-loss and Compact Si Wire 90 degree Waveguide Bend Using Clothoid Curves
Shuntaro Makino, Masahiro Suga, Takeshi Fujisawa, Kunimasa Saitoh (Hokkaido Univ.) PN2016-80 EMT2016-109 OPE2016-155 LQE2016-144 EST2016-119 MWP2016-93
Abstract (in Japanese) (See Japanese page) 
(in English) A low-loss and compact Si wire 90° waveguide bend using clothoid curves is proposed to reduce the bending loss in optical circuits. The clothoid curves can suppress the mismatch of the electromagnetic fields between straight and bent waveguides since the curvature of clothoid curves linearly increases from zero. From the numerical results based on 3-D finite element method, we found that there is an optimum ratio of clothoid curves in the bending waveguide. By using the clothoid curves with appropriate ratio, the bending loss is significantly reduced compared with the normal bend. Additionally, the comparison with the bending waveguide using offset connection is evaluated, and the advantages of the clothoid curves in terms of the operating wavelength range and the fabrication tolerance are demonstrated.
Keyword (in Japanese) (See Japanese page) 
(in English) Si wire waveguide / Bend waveguide / Clothoid curves / 3-D vector finite element method / / / /  
Reference Info. IEICE Tech. Rep., vol. 116, no. 388, OPE2016-155, pp. 257-262, Jan. 2017.
Paper # OPE2016-155 
Date of Issue 2017-01-11 (PN, EMT, OPE, LQE, EST, MWP) 
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 PN2016-80 EMT2016-109 OPE2016-155 LQE2016-144 EST2016-119 MWP2016-93

Conference Information
Committee OPE EST LQE EMT PN MWP IEE-EMT  
Conference Date 2017-01-18 - 2017-01-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Iseshi Kanko Bunka Kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OPE 
Conference Code 2017-01-OPE-EST-LQE-EMT-PN-MWP-EMT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Proposal of Low-loss and Compact Si Wire 90 degree Waveguide Bend Using Clothoid Curves 
Sub Title (in English)  
Keyword(1) Si wire waveguide  
Keyword(2) Bend waveguide  
Keyword(3) Clothoid curves  
Keyword(4) 3-D vector finite element method  
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1st Author's Name Shuntaro Makino  
1st Author's Affiliation Hokkaido University (Hokkaido Univ.)
2nd Author's Name Masahiro Suga  
2nd Author's Affiliation Hokkaido University (Hokkaido Univ.)
3rd Author's Name Takeshi Fujisawa  
3rd Author's Affiliation Hokkaido University (Hokkaido Univ.)
4th Author's Name Kunimasa Saitoh  
4th Author's Affiliation Hokkaido University (Hokkaido Univ.)
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Speaker Author-1 
Date Time 2017-01-19 14:35:00 
Presentation Time 25 minutes 
Registration for OPE 
Paper # PN2016-80, EMT2016-109, OPE2016-155, LQE2016-144, EST2016-119, MWP2016-93 
Volume (vol) vol.116 
Number (no) no.386(PN), no.387(EMT), no.388(OPE), no.389(LQE), no.390(EST), no.391(MWP) 
Page pp.257-262 
#Pages 6 
Date of Issue 2017-01-11 (PN, EMT, OPE, LQE, EST, MWP) 

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