论文信息 - Investigation of PLZT-based high-speed optical switch

Investigation of PLZT-based high-speed optical switch

The polarization characteristics of electro-optical (EO) switches using fiber Sagnac interferometers (FSI) structures are theoretically investigated. Analytical solutions of output fields are presented when the twists and birefringence in a Sagnac loop is considered. Numerical calculations show that the twists of fiber, the orientation of the inserted phase retarder and the splitting ratio of the coupler will influence both the output intensity and the output polarization properties of the proposed switch. A polarization independent EO switch based on hybrid integration of a Sagnac interferometer and a PLZT retarder was experimentally implemented, which showed good coincidence with the analytical results. The experiment showed a switch with -22dB crosstalk and less than 31 ns switching time.

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