Digital processor-controlled arrangement for monitoring and modifying system operating parameters
AssigneeAT&T Corp.
InventorPaul D. Yeates
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Abstract
An optical sub-system is disclosed which includes an embedded digital processor for providing continuous monitoring and adjusting of various operating parameters associated with the sub-system. The ability to modify various parameters such as bias voltage, optical signal power, etc., as a function of changes in the environment (e.g., ambient temperature, device age, power supply) results in optimization of the sub-system. The digital processor is initially programmed during environmental testing in manufacture to provide a memory associated with the digital processor which includes the optimal values for a preselected set of operating parameters as a function of various environmental conditions.
Claims10
An optical sub-system for producing an output signal in response to an input signal, wherein a plurality of operating parameters included within the optical sub-system may change in value as a function of variations in the optical sub-system environment, the changes resulting in unwanted variations in the output signal, wherein the improvement comprises a digital processor embedded within the optical sub-system and including a memory programmed to include optimized values of operating parameters for preselected sets of environmental conditions, said digital processor responsive to the plurality of operating parameters for comparing said plurality of operating parameters to the optimized values stored in memory and providing as an output to said sub-system optimized operating parameter values.
Dependencies are inferred from the claim text.