Alignment-free characterization of polarizing beamsplitters.

  title={Alignment-free characterization of polarizing beamsplitters.},
  author={Felipe Calliari and Pedro Tovar and Christiano M. Nascimento and Breno Perlingeiro and Gustavo C. do Amaral and Guilherme Penello Tempor{\~a}o},
  journal={Applied optics},
  volume={58 16},
Traditional methods for measurement of polarizing beamsplitter (PBS) parameters, especially the extinction ratio, require highly polarized light sources, alignment procedures, and/or experimental parameters that change over time, such as polarization rotations. In this work, a new method is presented that employs unpolarized light and a Faraday mirror. It is shown that precise extinction ratio and insertion loss values can be achieved in three single-sweep measurements without any alignment… 

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