A classical 3-port optical circulator is demonstrated on the silicon-on-insulator (SOI) platform. A garnet die with a magneto-optical cerium-doped yttrium iron garnet (Ce:YIG) layer is bonded on top of a Mach–Zehnder interferometer circuit using a thin adhesive bonding layer. The power transmission between different ports is characterized in the presence of an external magnetic field, transversal to the light propagation direction. An isolation of 22 dB is measured at a wavelength of 1562 nm.
© 2013 Optical Society of America
Original Manuscript: January 18, 2013
Manuscript Accepted: January 28, 2013
Published: March 14, 2013
Samir Ghosh, Shahram Keyvaninia, Wim Van Roy, Tetsuya Mizumoto, Gunther Roelkens, and Roel Baets, "Adhesively bonded Ce:YIG/SOI integrated optical circulator," Opt. Lett. 38, 965-967 (2013)