Patent ID: 6377594
Filing Date: 2002-04-23
Classification: G11B,H01S

Abstract:
An apparatus comprising:an optical pulse generator for generating a train of high speed, high power, multi-level optical pulses, wherein the optical pulse generator provides at least a low optical intensity level and a medium optical intensity level and a high optical intensity level; a photodetector optically coupled with the optical pulse generator for generating a multi-level train of electrical pulses having amplitude levels in response to optical intensity levels of the train of optical pulses, including a low amplitude level, a medium amplitude level and a high amplitude level; at least one reference; and a multi-level analyzer electrically coupled with the reference and the photodetector for analyzing the amplitude levels of the train of multi-level electrical pulses in comparison to the reference; and a controller coupled with the reference for ascertaining the high amplitude levels within the multi-level train of electrical pulses; wherein the controller is electrically coupled with analyzer for generating a high correction signal.