(EN)
A method of, and system for, controlling the level of one or more wavelength channels added to an optical fibre trunk (10) of a WDM system from a branch terminal via a saturated amplifier (28) in which an additional wavelength signal differed from the wavelength of wanted channels is introduced to the input of the saturated amplifier (28) to reduce the level of the added wanted channels.
(ZH) 一种方法和系统,用于控制由一分路终端通过一饱和放大器(28)插入WDM系统的光缆干线(10)的一条或多条波长信道的电平,其中向该饱和放大器(28)的输入端引入不同于所需信道波长的一附加波长信号,以降低插入的所需信道的电平。