Optical waveguides – With optical coupler – Particular coupling function
Reexamination Certificate
2007-04-17
2007-04-17
Font, Frank G. (Department: 2883)
Optical waveguides
With optical coupler
Particular coupling function
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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Lu Liang-Ju
Wu Pingfan P.
Yang Zhicheng
Zhang Boying Barry
ADC Telecommunications Inc.
Carlson, Caspers Vandenburgh & Lindquist
Font Frank G.
Hughes James P.
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