Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2000-01-26
2003-07-15
Healy, Brian (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
C385S001000, C385S003000, C385S024000, C385S031000, C359S199200, C359S199200, C359S199200
Reexamination Certificate
active
06594421
ABSTRACT:
FIELD OF THE INVENTION
The invention pertains to methods and apparatus for optical processing of temporal waveforms.
BACKGROUND OF THE INVENTION
Optical processing of temporal waveforms can be performed using spectral filters such as the composite gratings described in, for example, U.S. Pat. No. 5,812,318, Apparatus and Methods for Routing of Optical Beams via Time-Domain Spatial-Spectral Filtering; U.S. patent application Ser. Nos. 09/100,592, abandoned and 09/115,331, pending, Segmented Complex Diffraction Gratings; U.S. patent application Ser. No. 09/120,959, now U.S. Pat. No. 6,314,220, Segmented Complex Fiber Gratings; and U.S. patent application Ser. No. 09/354,851, now U.S. Pat. No. 6,292,282, Time-Wavelength Multiple Access Optical Communication System and Method. These documents are incorporated herein by reference.
The spectral filters, coders, and decoders described in these references include optical fibers in which fiber Bragg gratings are formed. Unfortunately, the properties of these fiber Bragg gratings are fixed during manufacture so that systems using these devices are not readily reconfigurable. Dynamically reconfigurable devices that are programmable to provide different spectral filtering characteristics or codings are needed.
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Grunnet-Jepsen Anders
Johnson Alan E.
Maniloff Eric S.
Munroe Michael J.
Sweetser John N.
Blakely , Sokoloff, Taylor & Zafman LLP
Healy Brian
Intel Corporation
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