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Paper Abstract and Keywords
Presentation 2022-02-24 16:00
A study of optical power measurement using a infrared image sensor for a remote operated optical path switching node
Ryo Koyama, Yoshiteru Abe, Kazunori Katayama (NTT) OFT2021-73 OPE2021-53 Link to ES Tech. Rep. Archives: OPE2021-53
Abstract (in Japanese) (See Japanese page) 
(in English) Optical access network is an important infrastructure of 5G mobile service and incoming Beyond 5G mobile service. These services request higher reliability for the optical access network and have different demands of fiber access points from that of FTTH service. To meet these demands with keeping high usage rete of optical fibers, a novel concatenated loop topology for the access optical fiber network with remote operated optical fiber switching nodes is being studied. In a switching operation of an optical path in the access optical fiber network, a confirmation of the fiber pass to switch before the switching and a test of the switched pass after the switching are important. Therefore, we are developing a new test method which taps and measures a little amount of optical power of the transmitting optical signal or the testing light in the switching node. In this report, we studied about a tap technique using Fresnel reflection and a optical power measurement technique using infra-red image sensor. We confirmed the test method combined these techniques is potentially practical as the tapping loss can be less than 0.5 dB, the least measurable optical power can be -25 dBm, the mean square error can be 0.64 dB, and over 10 times can be used per a day if it is driven by an optical power source with a power of 0 dBm and a photoelectric conversion rate of 30%.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical power measurement / Image sensor / Fresnel reflection / Remote operated optical fiber switching node / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 376, OFT2021-73, pp. 17-22, Feb. 2022.
Paper # OFT2021-73 
Date of Issue 2022-02-17 (OFT, OPE) 
ISSN Online edition: ISSN 2432-6380
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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)
Download PDF OFT2021-73 OPE2021-53 Link to ES Tech. Rep. Archives: OPE2021-53

Conference Information
Committee OPE OFT OCS  
Conference Date 2022-02-24 - 2022-02-25 
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 2022-02-OPE-OFT-OCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study of optical power measurement using a infrared image sensor for a remote operated optical path switching node 
Sub Title (in English)  
Keyword(1) Optical power measurement  
Keyword(2) Image sensor  
Keyword(3) Fresnel reflection  
Keyword(4) Remote operated optical fiber switching node  
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1st Author's Name Ryo Koyama  
1st Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
2nd Author's Name Yoshiteru Abe  
2nd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
3rd Author's Name Kazunori Katayama  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Speaker Author-1 
Date Time 2022-02-24 16:00:00 
Presentation Time 25 minutes 
Registration for OFT 
Paper # OFT2021-73, OPE2021-53 
Volume (vol) vol.121 
Number (no) no.376(OFT), no.377(OPE) 
Page pp.17-22(OFT), pp.21-26(OPE) 
#Pages
Date of Issue 2022-02-17 (OFT, OPE) 


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