Optical waveguides – With optical coupler – Switch
Reexamination Certificate
2006-09-19
2006-09-19
Duverne, J. F. (Department: 2839)
Optical waveguides
With optical coupler
Switch
Reexamination Certificate
active
07110633
ABSTRACT:
A method and apparatus are described to provide optical path protection for an optical switching system. An apparatus includes a first optical core switch, a second optical core switch, and an optical protection switch. The optical protection switch has at least two inputs and at least two outputs that allow the optical protection switch to direct input optical data traffic to one of the first optical core switch and the second optical core switch, and to direct a test signal to the other of the first optical core switch and the second optical core switch. For one embodiment, the optical protection switch is a 2×2 non-blocking optical switch having only two-path loss optimization. Alternatively, the optical protection switch may be a blocking 3×2 optical switch implemented to function as a 2×2 non-blocking optical switch. For one embodiment, the blocking 3×2 optical switch is a translational switch.
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Bowers John Edward
Helkey Roger Jonathan
Keating Adrian
Blakely , Sokoloff, Taylor & Zafman LLP
Calient Networks, Inc.
Duverne J. F.
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