Thin-film-magnet magnetooptic waveguide isolator

Author

Levy, M. ; Ilic, I. ; Scarmozzino, R. ; Osgood, R.M., Jr. ; Wolfe, R. ; Gutierrez, C.J. ; Prinz, G.A.

Author_Institution

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

Volume

5

Issue

2

fYear

1993

Firstpage

198

Lastpage

200

Abstract

Recent advances in thin-film-magnet and Bi-YIG film technologies have opened up the possibility of fabricating very compact magnetooptic structures. It is demonstrated for the first time that these new technologies can be brought together to make a thin-film-magnet magnetooptic isolator for use in optical packaging and integrated optical circuits. The device operates at a 1.55- mu m wavelength and uses a waveguide etched into a Bi-YIG film whose linear birefringence has been tuned to near zero at this wavelength. The Bi-YIG´s magnetization is saturated by a thin ferromagnetic film. Isolation ratios of -21 dB have been obtained.<>

Keywords

birefringence; bismuth; ferromagnetism; garnets; integrated optics; magneto-optical devices; optical films; optical isolators; optical waveguides; packaging; yttrium compounds; 1.55 micron; IR; YFe5O12:Bi; YIG:Bi film technologies; compact magnetooptic structures; etched waveguides; integrated optical circuits; isolation ratios; linear birefringence; magnetization; magnetooptic waveguide isolator; optical packaging; thin ferromagnetic film; thin-film-magnet; thin-film-magnet magnetooptic isolator; tuned; Integrated circuit technology; Integrated optics; Isolation technology; Isolators; Magnetic circuits; Magnetooptic devices; Optical films; Optical saturation; Optical waveguides; Packaging;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.196003

Filename

196003