An integrated optical waveguide isolator based on multimode interference by wafer direct bonding

• Published in: IEEE transactions on magnetics Vol. 41; no. 10; pp. 3520 - 3522
• Main Authors: Yang, J.S., Roh, J.W., Ok, S.H., Woo, D.H., Byun, Y.T., Lee, W.Y., Mizumoto, T., Lee, S.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.10.2005; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Garnet; Indium phosphide; Integrated optics; Interference; Isolators; Magnetism; Materials science; Materials science and technology; multimode interference; Optical devices; Optical films; optical isolator; Optical waveguides; Other topics in materials science; Physics; Semiconductor waveguides; Wafer bonding; wafer direct bonding; wafer direct bonding; Waveguides; Garnet; multimode interference; optical isolator; Magnetic properties
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2005.854960

An integrated waveguide optical isolator based on multimode interference (MMI) by wafer direct bonding has been studied. It was found that wafer direct bonding between InP and Gd/sub 3/Ga/sub 5/O/sub 12/ (GGG) is effective for the integration of a waveguide optical isolator. The isolation ratio was found to be 2.9 dB in the proposed device.