Coherent self-heterodyne Brillouin OTDR for measurement of Brillouin frequency shift distribution in optical fibers

Kaoru Shimizu, Tsuneo Horiguchi, Yahei Koyamada, Toshio Kurashima

Research output: Contribution to journalArticle

119 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)730-736
Number of pages7
JournalJournal of Lightwave Technology
Volume12
Issue number5
DOIs
Publication statusPublished - 1994 May
Externally publishedYes

Fingerprint

translators
frequency shift
Optical fibers
optical fibers
Erbium doped fiber amplifiers
Distributed feedback lasers
Single mode fibers
Semiconductor lasers
beat frequencies
erbium
dynamic range
amplifiers
spatial resolution
semiconductor lasers
low frequencies
fibers
probes
pulses
Heterodyne detection

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Coherent self-heterodyne Brillouin OTDR for measurement of Brillouin frequency shift distribution in optical fibers. / Shimizu, Kaoru; Horiguchi, Tsuneo; Koyamada, Yahei; Kurashima, Toshio.

In: Journal of Lightwave Technology, Vol. 12, No. 5, 05.1994, p. 730-736.

Research output: Contribution to journalArticle

Shimizu, Kaoru ; Horiguchi, Tsuneo ; Koyamada, Yahei ; Kurashima, Toshio. / Coherent self-heterodyne Brillouin OTDR for measurement of Brillouin frequency shift distribution in optical fibers. In: Journal of Lightwave Technology. 1994 ; Vol. 12, No. 5. pp. 730-736.
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