Finite-difference time-domain calculations of a liquid-crystal-based switchable Bragg grating
- 1 June 2004
- journal article
- Published by Optica Publishing Group in Journal of the Optical Society of America A
- Vol. 21 (6) , 1066-1072
- https://doi.org/10.1364/josaa.21.001066
Abstract
A polymer-wall-confined transmissive switchable liquid crystal grating is proposed and investigated by two-dimensional finite-difference time-domain optical calculation and liquid-crystal-director calculation, to our knowledge for the first time. The results show how to obtain optimized conditions for high diffraction efficiency by adjusting the liquid crystal parameters, grating geometric structure, and applied voltages. The light propagation direction and efficiency can be accurately calculated and visualized concurrently.Keywords
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