Patent ID: 6392769
Filing Date: 2002-05-21
Classification: H04B

Abstract:
An optical output signal level control apparatus comprisinga control signal monitor responsive to a detected first state of an input global control signal for outputting a output global control signal at a first state, and responsive to a detected second state of the input global control signal for outputting the output global control signal at the first state and for generating an enable signal; and an adjustable optical transmission unit for receiving an optical signal and for controlling its output signal level, said adjustable optical transmission unit being (1) responsive to said enable signal for adjusting the output signal level to a predetermined level and for generating an okay signal when said output signal level adjustment is completed, and (2) responsive to the absence of said enable signal for maintaining the output signal level at its existing level; and wherein said control signal monitor is responsive to said okay signal for outputting the output global control signal at a second state.