OPTICAL TIME DOMAIN REFLECTOMETER FOR SINGLE-MODE FIBERS.

Tsuneo Horiguchi, Masamitsu Tokuda

研究成果: Article

4 引用 (Scopus)

抜粋

An optical time domain reflectometer for single-mode fibers has been designed and constructed at a 1. 3 mu m wavelength. A fast digital averager enables 44 db signal-to-noise ratio improvement within about 40 seconds. Curve fitting by a least squares method reduces the variation in fiber loss measurements. By using an acoustooptical directional coupler, Fresnel reflection is removed. In addition, backscattered signal fluctuation caused by polarization fluctuation is suppressed to a negligible extent. Current drift in receiving circuits is decreased by using a drift compensation circuit. The optical time domain reflectometer that has been built can locate breaks in single-mode fibers with attenuations as high as 17. 5 db.

元の言語English
ページ(範囲)509-515
ページ数7
ジャーナルTransactions of the Institute of Electronics and Communication Engineers of Japan. Section E
67
発行部数9
出版物ステータスPublished - 1984 1 1

ASJC Scopus subject areas

  • Engineering(all)

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