ACOUSTOOPTICAL DIRECTIONAL COUPLER FOR AN OPTICAL TIME-DOMAIN REFLECTOMETER.

Tsuneo Horiguchi, Masataka Nakazawa, Masamitsu Tokuda, Naoya Uchida

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

An optical directional coupler in which a TeO//2 acoustooptical deflector (AOD) is employed has been designed and developed for use in an optical time-domain reflectometer (OTDR). A low round-trip insertion loss of 4. 6 dB and low crosstalk of below minus 48 dB were attained for the fabricated coupler. Signals of large amplitude, such as Fresnel reflection, could be suppressed to less than minus 33 dB by switching of the optical directional coupler. Amplitude fluctuation of the back-scattered signal due to polarization fluctuation in single-mode fibers is reduced to a negligible extent.

Original languageEnglish
Pages (from-to)108-115
Number of pages8
JournalJournal of Lightwave Technology
VolumeLT-2
Issue number2
Publication statusPublished - 1984 Apr
Externally publishedYes

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ASJC Scopus subject areas

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

Cite this

Horiguchi, T., Nakazawa, M., Tokuda, M., & Uchida, N. (1984). ACOUSTOOPTICAL DIRECTIONAL COUPLER FOR AN OPTICAL TIME-DOMAIN REFLECTOMETER. Journal of Lightwave Technology, LT-2(2), 108-115.