title: Silicon ring isolators with bonded nonreciprocal magneto-optic garnets.
abstract: 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.
authors.affiliation: Department of Electrical and Computer Engineering, University of California, Santa Barbara, CA 93106, USA. mctien101@gmail.com
authors.forename: Ming-Chun
authors.initials: MC
authors.lastname: Tien
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Mizumoto
authors.forename: Paolo
authors.initials: P
authors.lastname: Pintus
authors.forename: Herbert
authors.initials: H
authors.lastname: Kromer
authors.forename: John E
authors.initials: JE
authors.lastname: Bowers