Alignment-free characterization of polarizing beamsplitters

Journal article (2019)

Authors

Pedro Tovar PUC-Rio
G. Castro do Amaral PUC-Rio, Kavli institute of nanoscience Delft, QID/Tittel Lab - QuTech Advanced Research Centre
Research Group
QID/Tittel Lab (QuTech Advanced Research Centre) (TU Delft)
Copyright: © 2019 Felipe Calliari, Pedro Tovar, Christiano Nascimento, Breno Perlingeiro, G. Castro do Amaral, Guilherme Temporão
DOI: https://doi.org/10.1364/AO.58.004395
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Published Date

2019

Language

English

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Faculty

QuTech Advanced Research Centre

Department

Quantum Internet Division

Research Group

QID/Tittel Lab

Abstract

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 requirements or time-varying signals of any kind.

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