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Paper Abstract and Keywords
Presentation 2019-10-18 15:30
Study on optical vortex splitter on Si substrate using optical topology
Sho Okada, Tomohiro Amemiya, Koichi Saito, Hibiki Kagami, Makoto Tanaka, Nobuhiko Nishiyama (Tokyo Tech), Xiao Hu (NIMS) OCS2019-49 OPE2019-87 LQE2019-65
Abstract (in Japanese) (See Japanese page) 
(in English) We propose an optical vortex splitter that can be integrated into a conventional silicon photonics optical circuit. The device consists of several topological edge transmission lines with C6 symmetric Si / SiO2 nanoholes arranged in a honeycomb lattice. By arbitrarily setting the photonic structure of the optical fiber, it becomes possible to continuously change the branching ratio of the optical vortex propagating in the circuit. Propagation characteristics can be determined by the three-dimensional time domain difference method (FDTD method). As a result of analysis, the band diagram of an arbitrary photonic structure was gradually shifted from a trivial system to a topological system, and the splitter ratio of optical vortices at two output ports was controlled within the range of 10% to 90%. At this time, the state of the incident light vortex and the state of the outgoing light vortex branched to each port are completely the same in both the mode state and the rotation direction, and the state of the optical vortex is maintained in the optical circuit. It was shown that the continuous splittinng ratio can be controlled.
Keyword (in Japanese) (See Japanese page) 
(in English) Topological photonics / Optical vortex / Silicon photonics / Splitter / / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 230, OPE2019-87, pp. 113-118, Oct. 2019.
Paper # OPE2019-87 
Date of Issue 2019-10-10 (OCS, OPE, LQE) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 OCS2019-49 OPE2019-87 LQE2019-65

Conference Information
Committee OCS LQE OPE  
Conference Date 2019-10-17 - 2019-10-18 
Place (in Japanese) (See Japanese page) 
Place (in English)  
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Topics (in English)  
Paper Information
Registration To OPE 
Conference Code 2019-10-OCS-LQE-OPE 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on optical vortex splitter on Si substrate using optical topology 
Sub Title (in English)  
Keyword(1) Topological photonics  
Keyword(2) Optical vortex  
Keyword(3) Silicon photonics  
Keyword(4) Splitter  
1st Author's Name Sho Okada  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Tomohiro Amemiya  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
3rd Author's Name Koichi Saito  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
4th Author's Name Hibiki Kagami  
4th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
5th Author's Name Makoto Tanaka  
5th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
6th Author's Name Nobuhiko Nishiyama  
6th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
7th Author's Name Xiao Hu  
7th Author's Affiliation National Insititute for Materials Science (NIMS)
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Date Time 2019-10-18 15:30:00 
Presentation Time 25 
Registration for OPE 
Paper # IEICE-OCS2019-49,IEICE-OPE2019-87,IEICE-LQE2019-65 
Volume (vol) IEICE-119 
Number (no) no.229(OCS), no.230(OPE), no.231(LQE) 
Page pp.113-118 
#Pages IEICE-6 
Date of Issue IEICE-OCS-2019-10-10,IEICE-OPE-2019-10-10,IEICE-LQE-2019-10-10 

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