Patent ID: 7826740

Claim:
A method of adaptively adjusting an Avalanche photo-diode (APD) optical receiver and laser system, the method comprising: determining a value for at least one of a Q-factor, an optimal Bit Error Rate (BER), an intensity level “1” and “0” on a histogram H of input signal power, an input optical power, and a laser output power; adjusting at least one parameter from the group consisting of the Q-factor, the optimal BER, the intensity of level “1” and “0” on a histogram H of input signal power, the input optical power, and the laser output power; and determining the quality of a fiber by controlling the laser output power and the input optical power; wherein when the fiber is determined to be of bad quality, adjusting the quality of the fiber; and when the fiber is determined to be good quality, continuing monitoring and adaptive adjustment of the system parameters.