Thin-film-magnet magnetooptic waveguide isolator
- 1 February 1993
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Photonics Technology Letters
- Vol. 5 (2) , 198-200
- https://doi.org/10.1109/68.196003
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
This publication has 5 references indexed in Scilit:
- Hybrid Ferromagnetic-Semiconductor StructureScience, 1990
- Etch-tuned ridged waveguide magneto-optic isolatorApplied Physics Letters, 1990
- Magneto-optic waveguide hysteresis loops of ‘‘planar’’ magnetic garnet filmsJournal of Applied Physics, 1989
- Thin-film garnet materials with zero linear birefringence for magneto-optic waveguide devices (invited)Journal of Applied Physics, 1988
- Mean Magnetic Moments in bcc Fe–Co AlloysJournal of Applied Physics, 1969