Patent ID: 7916982
Filing Date: 2011-03-29
Classification: G02F

Abstract:
1. An integrated all-fiber magneto-optic switch having an input and an output, the integrated all-fiber magneto-optic switch comprising: a polarization beam splitter for splitting at least one incoming signal into orthogonal polarized paths; a silicon-on-insulator (SOI) wafer having a pair of Si rib waveguides defining the orthogonal polarized paths etched thereon; at least a first magneto-optic Faraday rotator inserted in a first Si rib waveguide of the pair of Si rib waveguides; at least a second magneto-optic Faraday rotator inserted in a second Si rib waveguide of the pair of Si rib waveguides; means to produce a field to control the polarization of each of the at least first magneto-optic Faraday rotator in the first Si rib waveguide, whereby presence of the field changes the state of the all-fiber magneto-optic switch; and no means to produce a field to control the polarization of each of the at least second magneto-optic Faraday rotator in the second Si rib waveguide.