反射式放大器 meaning in English

reflection amplifier

The double - pass amplifier reduces the average nf in 1580 . 84nm ~ 1588 . 48nm by 3 . 7db . a gain and nf improved double - pass edfa with a pre - stage amplifier is presented . compared with that of the conventional one , the gain of l - band edfa with pre - stage amplifier is 2 . 3db ~ 12 . 6db higher while nf is 2 . 2db ~ 23 . 9db lower in the wavelength range of 1568nm ~ 1594nm
利用前置放大器提高铒纤输入端的粒子数反转水平,实现了对反射式edfa增益和噪声系数的优化,与普通结构的反射式放大器相比,该反射式edfa在1568nm ~ 1594nm范围内,增益增加了2 . 3db ~ 12 . 6db ,而噪声系数则降低了2 . 2db ~ 23 . 9db 。