High-optical-isolation low-loss moderate-switching-speed nematic liquid-crystal optical switch
- 1 November 1994
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 19 (21) , 1780-2
- https://doi.org/10.1364/ol.19.001780
Abstract
A bulk polarization-rotation-based 1 x 2 optical switch is demonstrated by use of a birefringent-mode parallel-rub nematic liquid-crystal cell and a calcite Thompson-prism polarizing beam splitter. With 633-nm linearly polarized light the switch output ports exhibit a >36-dB optical isolation with less than -0.75 dB of optical insertion loss. A >1.5-ms switching speed is demonstrated for a cascade cell optical arrangement by means of the transient nematic effect with >30 dB of optical isolation and -1.45 dB of optical loss.Keywords
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