Optics: measuring and testing – By polarized light examination
Reexamination Certificate
2005-06-07
2005-06-07
Stafira, Michael P. (Department: 2877)
Optics: measuring and testing
By polarized light examination
C356S138000
Reexamination Certificate
active
06903819
ABSTRACT:
An optical element such as a beam splitter for interferometer separates a heterodyne beam from the laser into separate beams having different the frequencies and orthogonal polarizations. Optical fibers can conduct the separate beams to a beam combiner for interferometer optics. The PBS and/or the beam combiner can use a coating to reflect one linear polarization and transmit an orthogonal linear polarization. To improve extinction ratios in the PBS or the beam combiner, a yaw angle for an input beam is non-zero and corresponds to a peak in the extinction ratio of a reflected beam.
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Agilent Technologie,s Inc.
Stafira Michael P.
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