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Paper Abstract and Keywords
Presentation 2015-10-29 09:30
A Polarization Splitter and Converter Using a Curvilinearly Tapered Waveguide
Shunya Fujimura, Yuta Nito, Junji Yamauchi, Hisamatsu Nakano (Hosei Univ.) OCS2015-42 OPE2015-92 LQE2015-61
Abstract (in Japanese) (See Japanese page) 
(in English) A curvilinearly tapered waveguide is introduced to improve the characteristics of a polarization splitter and converter, whose characteristics are investigated by the beam-propagation method. First, a polarization splitter and a converter are separately investigated. To achieve a splitter with a short device length, a conventional linearly tapered core is transformed into a curvilinearly tapered one. As a result, a crosstalk of less than -20 dB is achieved over a wavelength range of 1.35 $mu$m to 1.7 $mu$m. Next, we introduce a similar taper profile into a polarization converter. The use of the curvilinearly tapered core again allows us to achieve a polarization converter with a reduced device length. Furthermore, the wide wavelength characteristic is obtained by partially removing the upper core near the output, since the polarization recoupling is avoided. Finally, we combine the modified polarization splitter and converter. The combined structure achieves both crosstalk and extinction ratio of less than -15 dB over a wide wavelength range of 1.33 $mu$m to 1.7 $mu$m with a quarter device length, compared with a conventional structure based on the linearly tapered core.
Keyword (in Japanese) (See Japanese page) 
(in English) Polarization splitter and converter / Polarization splitter / Polarization converter / Curvilinear taper / Beam-propagation method / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 277, OPE2015-92, pp. 5-10, Oct. 2015.
Paper # OPE2015-92 
Date of Issue 2015-10-22 (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 OCS2015-42 OPE2015-92 LQE2015-61

Conference Information
Committee OPE LQE OCS  
Conference Date 2015-10-29 - 2015-10-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Beppu International Convention Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OPE 
Conference Code 2015-10-OPE-LQE-OCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Polarization Splitter and Converter Using a Curvilinearly Tapered Waveguide 
Sub Title (in English)  
Keyword(1) Polarization splitter and converter  
Keyword(2) Polarization splitter  
Keyword(3) Polarization converter  
Keyword(4) Curvilinear taper  
Keyword(5) Beam-propagation method  
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1st Author's Name Shunya Fujimura  
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 2015-10-29 09:30:00 
Presentation Time 25 minutes 
Registration for OPE 
Paper # OCS2015-42, OPE2015-92, LQE2015-61 
Volume (vol) vol.115 
Number (no) no.276(OCS), no.277(OPE), no.278(LQE) 
Page pp.5-10 
#Pages 6 
Date of Issue 2015-10-22 (OCS, OPE, LQE) 

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