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Abstract
In this article, the transmission characteristics of a composite birefringent filter have been studied. The filter consists of a combination of two sets of cascaded systems of retarders with a polarizer in between the two sets, and a linear polarizer at each end. Each of the sets of retarders is essentially a cascaded fan-type Solc filter. The retardation introduced by retarders of the first set is different from the retardation introduced by the retarders forming the second set. Our theoretical study reveals that the system proposed has better filtering characteristics compared to that of a standard Solc filter.