Patent ID: 6975454
Filing Date: 2005-12-13
Classification: G02B,H04B,Y10S

Abstract:
1. An optical device, comprising: a beam splitter configured to split an input beam having in input intensity into a first beam having a polarization state equal to a first polarization state, said first beam further having a first input intensity, and a second beam having a polarization state equal to a second polarization state, said second beam further having a second input intensity; a first variable polarization controller, configured to receive either said first beam or said second beam, further configured to rotate said polarization state of said either said first beam or said second beam by a first angle; and a beam combiner, configured to receive said first beam and said second beam, and further configured to transmit an output beam having an output intensity, wherein said output beam has a first component with said first polarization state and a first output intensity, said output beam further having a second component with said second polarization state and a second output intensity, and wherein a ratio of said first output intensity to said output intensity is different than a ratio of said first input intensity to said input intensity.