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Paper Abstract and Keywords
Presentation 2012-10-25 11:15
Laminated Polarizer With an Anti-Reflection Structure Using a Subwavelength Grating
Junji Yamauchi, Kazuya Yamahira, Yuu Wakabayashi, Hisamatsu Nakano (Hosei Univ.) OCS2012-46 OPE2012-97 LQE2012-63
Abstract (in Japanese) (See Japanese page) 
(in English) An anti-reflection (AR) structure using a subwavelength grating (SWG) is analyzed by
the finite-difference time-domain method with the periodic boundary condition.
First, we evaluate the wavelength characteristics of the AR structure using the SWG.
By a proper choice of fill factor (the ratio of the grating width to the period),
the broadband transmission spectrum with a transmittance of more than 90 \% can be obtained for the TE and TM waves.
In addition, we consider the case where high-order diffraction wave affects the
transmission characteristics. After these basic studies, we apply the SWG-based AR structure to a laminated polarizer (Lamipol).
Note that use of a double-layer AR structure is desirable to sufficiently reduce the reflected waves.
However, the required refractive index for the Lamipol is too small to find an appropriate material.
Fortunately, the SWG-based AR can equivalently provide a low index almost arbitrarily.
As a result, a high transmittance of more than 99 \% is obtained over a wavelength range of 1.0 to $2.0~\mu{\rm m}$.
Keyword (in Japanese) (See Japanese page) 
(in English) Subwavelength grating / Anti-reflection structure / High-order diffraction / Laminated polarizer / Periodic structure / Finite-difference time-domain method / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 259, OPE2012-97, pp. 31-36, Oct. 2012.
Paper # OPE2012-97 
Date of Issue 2012-10-18 (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 OCS2012-46 OPE2012-97 LQE2012-63

Conference Information
Committee OPE LQE OCS  
Conference Date 2012-10-25 - 2012-10-26 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OPE 
Conference Code 2012-10-OPE-LQE-OCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Laminated Polarizer With an Anti-Reflection Structure Using a Subwavelength Grating 
Sub Title (in English)  
Keyword(1) Subwavelength grating  
Keyword(2) Anti-reflection structure  
Keyword(3) High-order diffraction  
Keyword(4) Laminated polarizer  
Keyword(5) Periodic structure  
Keyword(6) Finite-difference time-domain method  
Keyword(7)  
Keyword(8)  
1st Author's Name Junji Yamauchi  
1st Author's Affiliation Hosei University (Hosei Univ.)
2nd Author's Name Kazuya Yamahira  
2nd Author's Affiliation Hosei University (Hosei Univ.)
3rd Author's Name Yuu Wakabayashi  
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-2 
Date Time 2012-10-25 11:15:00 
Presentation Time 25 minutes 
Registration for OPE 
Paper # OCS2012-46, OPE2012-97, LQE2012-63 
Volume (vol) vol.112 
Number (no) no.258(OCS), no.259(OPE), no.260(LQE) 
Page pp.31-36 
#Pages 6 
Date of Issue 2012-10-18 (OCS, OPE, LQE) 

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