Optics: measuring and testing – By light interference – Having polarization
Reexamination Certificate
2011-02-15
2011-02-15
Connolly, Patrick J (Department: 2877)
Optics: measuring and testing
By light interference
Having polarization
Reexamination Certificate
active
07889352
ABSTRACT:
An optical device for changing polarization comprises a waveguide having a waveguide end facet coupled to a quarter-wave plate/reflector combination to rotate the polarization of incident light to the waveguide by 90 degrees. In one embodiment, a polarization beam splitter/rotator combination (PBSR) uses a quarter-wave plate in reflection at the end facet of the waveguide. The polarization beam splitter/rotator combination and variations of that structure are applied in various useful topologies as polarization mode dispersion (PMD) compensators and polarimeters.
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Alcatel-Lucent USA Inc.
Connolly Patrick J
Ryan & Mason & Lewis, LLP
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