Linbojie Huang, Zichen Liu, Lin Wu, Zhongyi Li, Juan Chen, Chao Li, Jin Tao, Zhixue He, Shaohua Yu
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High-Isolation LCoS-Based Optical Switch with Phase Hologram Parameter Optimization
A high-isolation liquid crystal on silicon (LCoS)-based optical switch realized by genetic algorithm (GA)-assisted method for parameterized hologram generation is proposed and experimentally demonstrated. The proposed method can simultaneously suppress all higher order diffraction crosstalk caused by the fringing of the electric field in LCoS. The hologram on the LCoS is parameterized, and a GA is employed to efficiently find out the optimal parameters. The simulation results indicate that the crosstalk induced by high-order diffraction beams can be reduced to below −50 dB over 100 operational cycles.
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