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Paper Abstract and Keywords
Presentation 2022-08-25 15:10
EDF laser displacement sensor based on bending characteristics of cascaded-chirped long-period fiber grating
Koken Fukushima, Makoto Okano, Atsushi Wada, Satoshi Tanaka (NDA), Fumihiko Ito (Shimane Univ.) OFT2022-9
Abstract (in Japanese) (See Japanese page) 
(in English) We have constructed an EDF laser in a sigma cavity configuration (EDFσL) using a double-pass cascaded-chirped long-period fiber grating (C-CLPG) for a displacement measurement. In this configuration, the double-pass C-CLPG consists of a C-CLPG and a Faraday rotator mirror (FRM), and works as a reflective sensor section with a comb-like spectrum and allows for flexible sensor configurations. In addition, it has a function to compensate for birefringence fluctuations during sensing operation by introducing the FRM. In the experiment, real-time displacement measurement by the EDFσL is demonstrated based on the bending characteristics of the C-CLPG. Further, it is confirmed that the proposed EDFσL shows a more stable oscillation due to the birefringence compensation effect than the previous single-pass C-CLPG-based EDF ring laser, enabling more precise measurements.
Keyword (in Japanese) (See Japanese page) 
(in English) Fiber optic sensor / Long-period fiber grating / Cascaded-chirped long-period fiber grating / Erbium-doped fiber laser / Faraday rotator mirror / Displacement / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 162, OFT2022-9, pp. 16-21, Aug. 2022.
Paper # OFT2022-9 
Date of Issue 2022-08-18 (OFT) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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)
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Conference Information
Committee OCS OFT LSJ  
Conference Date 2022-08-25 - 2022-08-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To OFT 
Conference Code 2022-08-OCS-OFT-LSJ 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) EDF laser displacement sensor based on bending characteristics of cascaded-chirped long-period fiber grating 
Sub Title (in English)  
Keyword(1) Fiber optic sensor  
Keyword(2) Long-period fiber grating  
Keyword(3) Cascaded-chirped long-period fiber grating  
Keyword(4) Erbium-doped fiber laser  
Keyword(5) Faraday rotator mirror  
Keyword(6) Displacement  
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Keyword(8)  
1st Author's Name Koken Fukushima  
1st Author's Affiliation National Defense Academy (NDA)
2nd Author's Name Makoto Okano  
2nd Author's Affiliation National Defense Academy (NDA)
3rd Author's Name Atsushi Wada  
3rd Author's Affiliation National Defense Academy (NDA)
4th Author's Name Satoshi Tanaka  
4th Author's Affiliation National Defense Academy (NDA)
5th Author's Name Fumihiko Ito  
5th Author's Affiliation Shimane University (Shimane Univ.)
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Speaker Author-1 
Date Time 2022-08-25 15:10:00 
Presentation Time 25 minutes 
Registration for OFT 
Paper # OFT2022-9 
Volume (vol) vol.122 
Number (no) no.162 
Page pp.16-21 
#Pages
Date of Issue 2022-08-18 (OFT) 


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