Presentation 2019-01-17
A Technique for Measuring Modal Crosstalk at Splice Position Using 1-um-band Mode-Detection Optical Time Domain Reflectometry
Atsushi Nakamura, Keiji Okamoto, Tomokazu Oda,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) We have proposed an optical time domain reflectometry (OTDR) that offers high-sensitivity detection of optical loss increases due to macro/micro-bending. The technique injects probe pulses below the cut-off wavelength of conventional single-mode fibers and measures the second-order mode of the backscattered light. In the technique, the crosstalk between the fundamental and second-order modes at a splice position is an important characteristic that closely related to the detection sensitivity of the optical loss increases. In this paper, we propose a novel technique for measuring modal crosstalk at a splice with axial misalignments using OTDR. We also experimentally demonstrate the feasibility of the proposed technique.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Optical time domain reflectometry / Higher-order modes / Modal crosstalk
Paper # OFT2018-62
Date of Issue 2019-01-10 (OFT)

Conference Information
Committee OFT
Conference Date 2019/1/16(3days)
Place (in Japanese) (See Japanese page)
Place (in English) Tanegashima space center, Nishinoomote Civic Hall
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Fumihiko Ito(Shimane Univ.)
Vice Chair
Secretary (Furukawa Electric)
Assistant Hiroshi Watanabe(NTT) / Masateru Tadakuma(Furukawa Electric)

Paper Information
Registration To Technical Committee on Optical Fiber Technology
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Technique for Measuring Modal Crosstalk at Splice Position Using 1-um-band Mode-Detection Optical Time Domain Reflectometry
Sub Title (in English)
Keyword(1) Optical time domain reflectometry
Keyword(2) Higher-order modes
Keyword(3) Modal crosstalk
1st Author's Name Atsushi Nakamura
1st Author's Affiliation NTT(NTT)
2nd Author's Name Keiji Okamoto
2nd Author's Affiliation NTT(NTT)
3rd Author's Name Tomokazu Oda
3rd Author's Affiliation NTT(NTT)
Date 2019-01-17
Paper # OFT2018-62
Volume (vol) vol.118
Number (no) OFT-388
Page pp.pp.5-8(OFT),
#Pages 4
Date of Issue 2019-01-10 (OFT)