Elimination of a back-reflected TE mode in a TM-mode optical isolator with a Mach-Zehnder interferometer

Hideki Yokoi, Tetsuya Mizumoto, Shinpei Kuroda, Takafumi Ohtsuka, Yoshiaki Nakano

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Elimination of a back-reflected TE mode traveling in a TM-mode optical isolator was investigated. The optical isolator had a Mach-Zehnder interferometer that included a polarization-dependent reciprocal phase shifter in one of the arms. The reciprocal phase shift was achieved by an optical path difference between the two arms. By adjustment of 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 18 dB was obtained against the back-reflected TE mode at a wavelength of 1.55 μm.

Original languageEnglish
Pages (from-to)7045-7051
Number of pages7
JournalApplied Optics
Volume41
Issue number33
Publication statusPublished - 2002 Nov 20
Externally publishedYes

Fingerprint

Mach-Zehnder interferometers
isolators
Phase shifters
elimination
Phase shift
Interferometers
Polarization
Wavelength
optical paths
extinction
phase shift
interferometers
adjusting
polarization
wavelengths

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Yokoi, H., Mizumoto, T., Kuroda, S., Ohtsuka, T., & Nakano, Y. (2002). Elimination of a back-reflected TE mode in a TM-mode optical isolator with a Mach-Zehnder interferometer. Applied Optics, 41(33), 7045-7051.

Elimination of a back-reflected TE mode in a TM-mode optical isolator with a Mach-Zehnder interferometer. / Yokoi, Hideki; Mizumoto, Tetsuya; Kuroda, Shinpei; Ohtsuka, Takafumi; Nakano, Yoshiaki.

In: Applied Optics, Vol. 41, No. 33, 20.11.2002, p. 7045-7051.

Research output: Contribution to journalArticle

Yokoi, H, Mizumoto, T, Kuroda, S, Ohtsuka, T & Nakano, Y 2002, 'Elimination of a back-reflected TE mode in a TM-mode optical isolator with a Mach-Zehnder interferometer', Applied Optics, vol. 41, no. 33, pp. 7045-7051.
Yokoi, Hideki ; Mizumoto, Tetsuya ; Kuroda, Shinpei ; Ohtsuka, Takafumi ; Nakano, Yoshiaki. / Elimination of a back-reflected TE mode in a TM-mode optical isolator with a Mach-Zehnder interferometer. In: Applied Optics. 2002 ; Vol. 41, No. 33. pp. 7045-7051.
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