Coherent Self-Heterodyne Brillouin OTDR for Measurement of Brillouin Frequency Shift Distribution in Optical Fibers

Kaoru Shimizu, Tsuneo Horiguchi, Yahei Koyamada, Toshio Kurashima

研究成果査読

131 被引用数 (Scopus)

抄録

Time domain reflectometry of spontaneously Brillouin scattered lightwaves in a single-mode optical fiber is demonstrated with a coherent self-heterodyne detection system employing a recently proposed frequency translator, a DFB laser diode, and erbium-doped fiber amplifiers. Since the probe pulse frequency is up-converted by the translator by an amount approximately equal to the Brillouin frequency shift, the self-heterodyne beat frequency can be reduced to a sufficiently low frequency in the IF band. The system enables one-end measurement of the Brillouin frequency shift distribution in optical fibers with a single way dynamic range (SWDR) of 16 dB and a frequency resolution of 5 MHz for a spatial resolution of 100 m.

本文言語English
ページ(範囲)730-736
ページ数7
ジャーナルJournal of Lightwave Technology
12
5
DOI
出版ステータスPublished - 1994 5

ASJC Scopus subject areas

  • 原子分子物理学および光学

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