Waveguided electrooptic switches using ferroelectric liquid crys

Details Waveguided electrooptic switches using ferroelectric liquid crys Waveguided electrooptic switches using ferroelectric liquid crys

1990-06-29

1991-09-03

Lee, John D.

350 9615, 350331R, 350347V, 350350R, G02F 1135

Patent

active

050447122

ABSTRACT:
A tiny, high speed, low cost electrooptic switch is provided having co-planar waveguides of silicon oxynitride and a ferro-electric liquid crystal layer overlying the waveguides. A voltage source causes the molecular optic axis of the liquid crystal to rotate 45-90 degrees within the plane of the liquid crystal layer to cause a change of state of the switch.

REFERENCES:
patent: 4201442 (1980-05-01), McMahon et al.
patent: 4690489 (1987-09-01), Neyer
patent: 4746183 (1988-05-01), Soref et al.
patent: 4749258 (1988-06-01), Baker
patent: 4813771 (1989-03-01), Handschy et al.
patent: 4836657 (1989-06-01), Gunji et al.

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