Polarization beam separator and combiner

Optical waveguides – With optical coupler – Particular coupling function

Reexamination Certificate

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Details

C385S011000, C385S036000

Reexamination Certificate

active

10846084

ABSTRACT:
The present invention relates to a device for use in a fiber optic system that may be a communication system, a sensing system or other system using guided-wave optical components. Reducing the number of lenses required to couple the waveguides and the free-space paths in the device offers the dual advantages of a reduced component count and simplified alignment. In an exemplary device having a first and second waveguides, a birefringent optical system defines bi-directional, polarization-dependent free-space paths. One of the bi-directional, polarization-dependent, free-space paths couples at least the first waveguide to the second waveguide. The birefringent optical system includes at least one prism for bending one of the polarization-dependent paths in a clockwise direction and one of the polarization-dependent paths in a counterclockwise direction.

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patent: 6049426 (2000-04-01), Xie et al.
patent: 6052228 (2000-04-01), Xie et al.
patent: 6282025 (2001-08-01), Huang et al.
patent: 6493473 (2002-12-01), Wooten

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