osnr meaning in English
光信噪比
Examples
- Secondly , we simulate the transmission process in computer , calculate the optical - signal - to - noise - ratio ( osnr ) of output signal with the same input signal filtered by the ofbg , matched filter and f - p filter , analyze the improvement of the osnr after filtered by them . we find it also has advantage over f - p filter . taking the two reasons into account , we believe that the weak ofbg is superior to the widely used f - p filter
另外用计算机模拟计算了光信噪比的改善情况，研究发现：一个相同的噪声信号经弱ofbg后的光信噪比较经过f - p滤波器后的光信噪比高，由此认为， ofbg用作光滤波器对接收端前置光放大器的噪声进行滤波，比常用f - p光滤波器具有更大的优越性。 - Raman fiber amplifier （ rfa ） is a kind of optical amplifier that can amplify signal light directly through nonlinear interaction of high intensity pump and signal light in fiber . whereas the spectrum of raman gain coefficient of optical fiber is not flat , the gain of signal light with different wavelength induced by a single pump is rather different , when wavelength division multiplexing ( wdm ) signal light is amplified by a single pump , the gain spectrum of the wdm signal light is not flat . the flatness of the wdm signal light has important impact on the optical signal - to - noise ratio ( osnr )
拉曼光纤放大器（ ramanfiberamplifier ,简称rfa ）利用高强度的泵浦光与信号光在光纤中的非线性相互作用实现信号光的直接放大，但是由于光纤的拉曼增益系数谱很不平坦，所以同一泵浦光源对不同波长信号光的增益就存在很大的差别,因此,用单泵浦光源来放大波分复用( wavelengthdivisionmulti - plexing ,简称wdm )信号光时，各信号光的增益值就有很大差异， wdm信号增益的平坦度对光信噪比( opticalsignal - noiseratio ,简称osnr )有重要影响。