Patent ID: 6178037
Filing Date: 2001-01-23
Classification: H01S

Abstract:
An optical amplifying apparatus comprising:an optical amplifier for amplifying an input light to said apparatus, which optical amplifier has a rare earth element-doped fiber and an optical isolator;an input light monitor for monitoring said input light;an output light monitor for monitoring an output light from said apparatus;a pumping energy supplier for generating a pumping energy;a control circuit; anda computerized processor means, said control circuit being connected to said input light monitor, said pumping energy supplier, said output light monitor and said computerized processor means, and converting an analog signal of said input light monitor and an analog signal of said output light monitor into digital data for providing said digital data to said computerized processor means and also converting digital data from said computerized processor means into an analog signal for providing said analog signal to said pumping energy supplier; whereinsaid computerized processor means conducts digital processings, via said control circuit, to control said pumping energy in accordance with a status of at least one of said input light monitor and said output light monitor.