Abstract
A modular three-reflection prism of Si can be designed to function as an in-line (nondeviating) linear polarizer or quarterwave retarder at the 1.30 and 1.55 /spl mu/m lightwave communication wavelengths. Si-related thin films are employed as optical coatings. In particular, a single-layer antireflection coating of Si/sub 3/N/sub 4/ is used at the entrance and exit faces, and a SiO/sub 2/ film controls the polarization and total internal reflection phase shifts at the side surfaces of the prism. The angular and wavelength sensitivity of these proposed Si-based polarization optical elements is also considered.
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