Polarization-Independent Magneto-Optical Waveguide Isolator Using TM-Mode Nonreciprocal Phase Shift

Author

Shoji, Yozo ; Hsieh I-Wei ; Osgood, Richard M. ; Mizumoto, Tetsuya

Volume

25

Issue

10

fYear

2007

Firstpage

3108

Lastpage

3113

Abstract

A polarization-independent magneto-optical waveguide isolator using nonreciprocal phase shift for a TM mode is proposed. The isolator is a Mach-Zehnder interferometer (MZI) that is composed of transverse electric (TE)-transverse magnetic (TM) polarization converters and nonreciprocal phase shifters. The MZI induces a phase difference between the reciprocal TE and nonreciprocal TM modes that are converted to each other by the polarization converter. Since the design uses a nonreciprocal phase shift only for the TM mode, it allows fabrication of an integrated structure. This paper describes the principle of operation and its design.

Keywords

Mach-Zehnder interferometers; integrated optics; light polarisation; magneto-optical isolators; optical phase shifters; optical polarisers; optical waveguide components; Mach-Zehnder interferometer; TM-mode nonreciprocal phase shift; magneto-optical waveguide isolator; nonreciprocal phase shifters; transverse electric-transverse magnetic polarization converters; High speed optical techniques; Isolators; Optical devices; Optical fiber polarization; Optical interferometry; Optical polarization; Optical waveguides; Phase shifters; Phase shifting interferometry; Tellurium; Integrated optics; optical isolators; polarization;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2007.904940

Filename

4346635