Calcite 2 x 2 optical bypass switch controlled by liquid-crystal cells.
Three blocks of birefringent calcite and two 6-V twisted nematic liquid-crystal cells have been used to make a 2 x 2 optical bypass switch for series-type fiber-optic networks. Optical cross-talk levels of -32 dB have been obtained in both states. The insertion loss was 3 dB in a nonoptimized switch.
Soref
R A
RA
McMahon
D H
DH