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: Article

127 引用 (Scopus)

抜粋

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.

元の言語English
ページ(範囲)730-736
ページ数7
ジャーナルJournal of Lightwave Technology
12
発行部数5
DOI
出版物ステータスPublished - 1994 5

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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