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Demonstration of a Silicon Waveguide Optical Circulator

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3 Author(s)
Mitsuya, K. ; Department of Electric and Electronic Engineering, Tokyo Institute of Technology, Tokyo, Japan ; Shoji, Y. ; Mizumoto, T.

A four-port optical circulator based on a Mach–Zehnder interferometer is fabricated in a silicon nanowire waveguide. A magneto-optical garnet is directly bonded to the silicon waveguide using a surface activated bonding technique. Four-port circulator operation is demonstrated with a maximum isolation of 15.3 dB at a wavelength of 1531 nm.

Published in:

Photonics Technology Letters, IEEE  (Volume:25 ,  Issue: 8 )