The effects of birefringence due to substrate and optical components on the sum and difference signals in optical memory systems are studied. A method is presented for calculation in an arbitrary optical system. Computed results are given to elucidate trends for a typical magneto--optic system employing two polrizing beamsplitters and differential detection, and comparison is made with experimental results. The effects of birefringence on the signal--to--noise ratio are discussed.
Dan S. Bloomberg,
"Effect Of Birefringence On Optical Memory Systems", Proc. SPIE 0695, Optical Mass Data Storage II, (14 January 1987); doi: 10.1117/12.936847; https://doi.org/10.1117/12.936847