Optical amplifier and optical amplification method

Details Optical amplifier and optical amplification method Optical amplifier and optical amplification method

H - Electricity

01

S

H01S 3/10 (2006.01) H01S 3/067 (2006.01) H01S 3/13 (2006.01) H01S 3/131 (2006.01) H04B 10/17 (2006.01)

Patent

CA 2375539

An optical filter (140) has a loss spectrum such that the inclination dL/d.lambda. of the loss L (dB) to the wavelength .lambda. (nm) is variable in the wavelength range of multiplexed signal light. A control circuit (150) measures the power of the signal light branched by an optical coupler (130), controls the power of the pumping light fed from pumping light sources (121, 122) to optical amplifying units (111, 112) based on the measured power of the input signal light so that the measured power may be a certain target value, and controls the inclination dL/d.lambda. based on the power.

Un filtre optique (140) comporte un spectre tel que l'inclinaison dL/d.lambda. de la perte L (dB) à la longueur d'ondes .lambda. (nm) est variable dans la gamme de longueurs d'ondes de la lumière du signal multiplexé. Une unité de contrôle (150) mesure la puissance de la lumière du signal ramifiée par un optron (130), contrôle la puissance de la lumière de pompage alimentée par les sources lumineuses de pompage (121, 122) vers les unités d'amplification optique (111, 112), sur la base de la puissance mesurée de la lumière du signal d'entrée, de façon que la puissance mesurée peut être une certaine valeur cible, et contrôle l'inclinaison dL/ d.lambda. sur la base de cette puissance.

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