Ce:YIG/Silicon-on-Insulator waveguide optical isolator realized by adhesive bonding

S. Ghosh, S. Keyvavinia, W. Van Roy, T. Mizumoto, G. Roelkens, R. Baets
2012 Optics Express  
A waveguide optical isolator realized by adhesive bonding of a garnet die, containing a Ce:YIG magneto-optic layer, on a silicon-oninsulator waveguide circuit is demonstrated. The die was bonded on top of an asymmetric Mach-Zehnder interferometer using a 100nm thick DVS-BCB adhesive bonding layer. A static magnetic field applied perpendicular to the light propagation direction results in a non-reciprocal phase shift for the fundamental quasi-TM mode in the hybrid waveguide geometry. A maximum
more » ... ometry. A maximum optical isolation of 25 dB is obtained. 2011 Optical Society of America OCIS codes: (230.3240) Isolators; (160.3820) Magneto-optical materials.
doi:10.1364/oe.20.001839 pmid:22274528 fatcat:qaeb2ffaj5crzbniajshydmdpa