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AssigneeLucent Technologies Inc.
InventorsBenjamin John Eggleton, John A. Rogers, Thomas Andrew Strasser, Kenneth Lee Walker
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A high speed optical communication system (≧10 Gbit/s) is compensated for temperature variation by providing it with one or more automatic dispersion compensation modules. Each module has an adjustable dispersion element, a data integrity monitor and a feedback network whereby the monitor adjusts the dispersion element to compensate for temperature variation. In a preferred embodiment the dispersion compensating modules comprise chirped fiber Bragg gratings in which the chirp is induced in the grating by passing a current along distributed thin film heaters deposited along the length of the fiber. The magnitude of the applied current determines the dispersion of the grating. A data integrity monitor is configured to sense the integrity of transmitted data and to provide electrical feedback for controlling the current applied to the grating.
In an optical fiber communication system comprising an optical transmitter for providing at least one optical signal channel, an optical fiber transmission path, and an optical receiver, said system having a transmission rate≧10 Gbit/s and subject to dispersion due to temperature variation, the improvement comprising:
Dependencies are inferred from the claim text.