Integrated liquid-crystal switch for both TE and TM modes: proposal and design.
An integrated optical switch is proposed and designed based on a weak-anchoring liquid-crystal (LC) cell with a substrate integrating planar lightwave circuits. It consists of a polarization splitter, two switchable polarization converters and a polarization combiner. The polarization splitter/combiner is a directional coupler with an etched slot and filled-in LC covering layer. The switchable polarization converters are straight waveguides with a designed length and covering LC. The proposed configuration is superior to the existing integrated LC switches, as it works for both the TE and TM modes.
Wang
Qian
Q
Applied Optoelectronics Center, School of Electronics and Communications Engineering, Dublin Institute of Technology, Kevin Street, D8, Ireland. Qian.Wang@osa.org
Farrell
Gerald
G