Wavelength-multiplexing fiber amplifier with constant output power in optical relay system and method for achieving the same

摘要

The present invention relates to a wavelength division multiplexing optical fiber amplifier having a constant output power in an optical relay system, and a method for achieving the same. In the optical relay system, a wavelength division multiplexing optical fiber amplifier having a constant output power is input using a pumping light output from a pumping light source. An optical relay system having a plurality of wavelength division multiplexing optical fiber amplifiers for amplifying a multi-channel optical signal, the first storage unit storing target output power of a wavelength division multiplexing optical fiber amplifier according to the number of channels of an input optical signal. ; A relay system controller which senses the number of channels of the optical signal input to the current wavelength division multiplexing optical fiber amplifier and transmits the number of channels of the current wavelength division multiplexing optical fiber amplifier to the next optical relay system; A second storage unit storing the number of channels sensed by the relay system controller; The target value stored in the first storage unit is read and stored in the second storage unit so that the output power of the current wavelength division multiplexing optical fiber amplifier reaches the target value constantly, and the amplified output power of the current wavelength division multiplexing optical fiber amplifier is stored in the second storage unit. And an amplifying control unit for determining a driving value of the pumping light source in comparison with the target output power stored in the storage unit.;According to the present invention, data bottlenecks and data collisions can be avoided in driving the optical fiber amplifier.