| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem: while a high-speed optical amplifier with small transient response to burst signal input is required in accordance with expansion and complication of an application range of an optical network, waveform of input light can not be maintained since response speed is not sufficient in the conventional technology. SOLUTION: The optical amplifier includes: a first input monitor means 550; a second input monitor means 560; an optical amplification means 310 including an optical amplification medium 300; an optical delay means 900; a control means 400 for performing feed-forward control; and a high-speed output variable means 610, when the optical amplification means is controlled by the feed-forward control according to signals of the input monitor means 500, response performance of the optical amplification medium is improved, and high-speed response performance is attained by utilizing an overshoot signal as a control signal. Furthermore, the high-speed and stable optical amplifier is attained by simultaneously performing high-speed feedback control of the high-speed output variable means 610 using signals of optical output monitors 700. COPYRIGHT: (C)2009,JPO&INPIT |
