Silicon ring isolators with bonded nonreciprocal magneto-optic garnets

M.-C. Tien, T. Mizumoto, P. Pintus, H. Kroemer, and J.E. Bowers
Publication Date
Publication Type
Journal/Conference Name
Optics Express
vol. 19, no. 12, pp 11740-11745

A ring isolator is demonstrated for the first time by directly bonding a cerium-substituted yttrium iron garnet (Ce:YIG) onto a silicon ring resonator using oxygen plasma enhanced bonding. The silicon waveguide is 600 nm wide and 295 nm thick with 500-nm-thick Ce:YIG on the top to have reasonable nonreciprocal effect and low optical loss. With a radial magnetic field applied to the ring isolator, it exhibits 9-dB isolation at resonance in the 1550 nm wavelength regime.

Research Areas
Silicon Photonics
Integration Technologies
Photonics Integrated Circuits
More Research Areas
Isolators & Circulators