Title :
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
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;
Journal_Title :
Photonics Technology Letters, IEEE
