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査読

24 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)1102-1109
ページ数8
ジャーナルJournal of Lightwave Technology
15
7
DOI
出版ステータスPublished - 1997 7

ASJC Scopus subject areas

  • 原子分子物理学および光学

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