Optical: systems and elements – Polarization without modulation – Polarizarion by dichroism
Reexamination Certificate
2006-04-11
2006-04-11
Juba, Jr., John (Department: 2872)
Optical: systems and elements
Polarization without modulation
Polarizarion by dichroism
Reexamination Certificate
active
07027223
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.
Jr. John Juba
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