Patent ID: 6137605
Filing Date: 2000-10-24
Classification: H04B,H04J

Abstract:
An output power control system for an optical amplification repeater in a wavelength division multiplexed (WDM, hereinafter) optical communication system, comprising:an optical transmitter provided with means for transmitting a subsidiary optical signal representing a number of WDM optical signals; andan optical amplification repeater provided with means for converting said subsidiary optical signal into said number of said WDM optical signals and so controlling an output power of said optical amplification repeater in accordance with said number of said WDM optical signals, such that an output power of each of said WDM optical signals is kept to be a predetermined level;wherein said means for transmitting said subsidiary optical signal includes means for assigning different times to bursts, said bursts being for said subsidiary optical signal, and means for periodically modulating said WDM optical signals at a predetermined period by said bursts, such that effects of modulations on information of said WDM optical signals are negligible.