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Updated: Jun 15, 2026

Design and Characterization Methodology for Efficient Wide Range Tunable MEMS Filters
Published on: February 4, 2018
Method to reduce sidelobes of multistage Lyot filters
Guowei Yang1, Zhenrong Zheng, Haifeng Li
1State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China.
Abstract:
We propose a method to reduce sidelobes of multistage Lyot filters by substituting certain stages with two-plate fan Solc stages. Parallel-aligned nematic liquid crystal (LC) cells are used as variable retarders to compose multistage Lyot LC tunable filters (LCTF). The simulation of a four-stage Lyot LCTF and a tunable filter, comprising two stages of Lyot filter and two stages of two-plate Solc filter, are compared. With this method, the sidelobes are reduced and the full width at half-maximum intensity of transmission peak is also reduced. Experimental results and theoretical analysis are presented in detail to verify this method.
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