Coherent optical frequency domain reflectometry using phase-decorrelated reflected and reference lightwaves

Kohji Tsuji, Kaoru Shimizu, Tsuneo Horiguchi, Yahei Koyamada

研究成果: Article

21 引用 (Scopus)

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We report a new scheme for coherent optical frequency domain reflectometry (C-OFDR) where the coherence length of the lightwaves does not limit the measurable fiber length. In this scheme, we use the beat spectrum which results when we mix reflected and reference lightwaves whose phases are not correlated. We demonstrated this scheme using a narrow-linewidth-lightwave source and an external electro-optical phase modulator. We measured Rayleigh backscattering and Fresnel reflections from a 30-km optical fiber, and achieved a spatial resolution of 5 m for two neighboring Fresnel reflectors located at the far end of the fiber. We estimated the expected spatial resolution and single-way dynamic range for our new scheme and show that it is capable of measuring long optical fibers with high-spatial resolution.

元の言語English
ページ(範囲)1102-1109
ページ数8
ジャーナルJournal of Lightwave Technology
15
発行部数7
DOI
出版物ステータスPublished - 1997 7 1

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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