Elimination of back-reflected transverse electric mode in transverse-magnetic-mode optical isolator with Si guiding layer

Hideki Yokoi, Yuya Shoji, Tadayasu Kuroda, Tetsuya Mizumoto

Research output: Contribution to journalArticle

Abstract

The elimination of a back-reflected transverse electric (TE) mode traveling in a transverse-magnetic (TM)-mode optical isolator with a Si guiding layer was investigated. The optical isolator had an optical interferometer that included a polarization-dependent reciprocal phase shifter in one of the arms. By adjusting the length of the reciprocal phase shifter, the interferometer prevented the back-reflected TE mode from coupling into an input port of the isolator An extinction ratio of more than 32.0dB was obtained against the back-reflected TE mode at a wavelength of 1.57μm.

Original languageEnglish
Pages (from-to)6679-6681
Number of pages3
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume46
Issue number10 A
DOIs
Publication statusPublished - 2007 Oct 9

Keywords

  • Nonreciprocal phase shift
  • Optical isolator
  • Reciprocal phase shift
  • Si

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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