Design of a wedge plate for polarization-preserving angular shifter |
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Authors: | Yi-Kai Cheng Jyh-Long Chern |
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Institution: | (1) Department of Photonics, Institute of Electro-Optical Engineering, Microelectronics and Information System Research Center, National Chiao Tung University, Hsinchu, 300, Taiwan |
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Abstract: | It is shown that by using a wedge plate, the incident direction of light propagation can be rotated as necessary while still
preserving beam polarization. The basic conditions of these preservations of polarization are deduced. For numerical demonstration,
it is shown that a collimated beam with +45° linear polarization can be guided to any pre-settled direction where the square
of ellipse ratio variation in the polarization is less than 0.0001%, while the variation of squared ellipse ratio of a right
circular polarization beam is kept under 0.1%. |
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Keywords: | wedge plate polarization optical designs |
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