Presentation 2022-02-24
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,
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Abstract(in Japanese) (See Japanese page)
Abstract(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)
Keyword(in English) Optical power measurement / Image sensor / Fresnel reflection / Remote operated optical fiber switching node
Paper # OFT2021-73,OPE2021-53
Date of Issue 2022-02-17 (OFT, OPE)

Conference Information
Committee OPE / OFT / OCS
Conference Date 2022/2/24(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Takaaki Ishigure(Keio Univ.) / Yuji Matsuura(Tohoku Univ.) / Takeshi Hoshida(Fujitsu)
Vice Chair Toshikazu Hashimoto(NTT)
Secretary Toshikazu Hashimoto(Tokushima Univ.) / (Kagoshima Univ.) / (NTT)
Assistant Hirokazu Kobayashi(Kochi Univ. of Tech) / Tadashi Murao(Mitsubishi Electric) / Yukihiro Goto(NTT) / Minoru Takahashi(Fujikura)

Paper Information
Registration To Technical Committee on OptoElectronics / Technical Committee on Optical Fiber Technology / Technical Committee on Optical Communication Systems
Language JPN
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
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)
Date 2022-02-24
Paper # OFT2021-73,OPE2021-53
Volume (vol) vol.121
Number (no) OFT-376,OPE-377
Page pp.pp.17-22(OFT), pp.21-26(OPE),
#Pages 6
Date of Issue 2022-02-17 (OFT, OPE)