Polarization-independent waveguide optical isolator based on nonreciprocal phase shift

Author

Fujita, J. ; Levy, M. ; Osgood, R.M. ; Wilkens, L. ; Dötsch, H.

Author_Institution

Microelectron. Sci. Lab., Columbia Univ., New York, NY, USA

Volume

12

Issue

11

fYear

2000

Firstpage

1510

Lastpage

1512

Abstract

A polarization-independent waveguide optical isolator based on nonreciprocal interference is proposed. The design uses simultaneous TE and TM nonreciprocal phase shifts obtained from geometric asymmetry in horizontal and vertical axes of waveguide cross section along with opposing transverse and vertical magnetic fields in interferometer arms. A design to achieve such an isolator is described. Both TE and TM nonreciprocal phase shifts comparable to the theoretical counterparts have also been experimentally observed from a single waveguide.

Keywords

light interferometers; light polarisation; magneto-optical isolators; optical communication equipment; optical design techniques; optical phase shifters; optical planar waveguides; optical waveguide components; TE nonreciprocal phase shifts; TM nonreciprocal phase shifts; design uses; geometric asymmetry; horizontal axes; nonreciprocal interference; nonreciprocal phase shift; polarization-independent waveguide optical isolator; simultaneous TE/TM nonreciprocal phase shifts; single waveguide; transverse magnetic fields; vertical axes; vertical magnetic fields; waveguide cross section; waveguide optical isolator; Geometrical optics; Interference; Isolators; Magnetic fields; Optical interferometry; Optical polarization; Optical waveguide theory; Optical waveguides; Phase shifting interferometry; Tellurium;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.887722

Filename

887722