...F 光带通滤波器（Optical Band—pass Filter）ODL 光延时线（Optical Delay Line）OSNR 光信噪比（Optical Signal Noise Ratio）OTDM 光时分复用（Optical Time-Division Multiplexing）PC 偏振控制器（Polarization Controller）PDI 偏振延时干涉（Polarizat...
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DRFA can perform an important function in DWDM, because of its lower noise factor and higher optical signal noise ratio. The optical fiber transmission length can be extended and transmission cost can be reduced.
DFRA具有低的噪声系数,高的光信噪比,极大地延长传输距离,降低系统成本,在DWDM中发挥巨大的作用。
参考来源 - 宽带分布光纤拉曼放大器的设计及特性分析·2,447,543篇论文数据，部分数据来源于NoteExpress
The transmission quality of DWDM system is affected by the damages from linear and nonlinear effects so the ratio of optical signal to noise is reduced and the bit error rate is increased.
DWDM系统的传输质量受到线性和非线性两类效应引起的损害影响，导致光信号噪声比下降，误码率增大。
By this filter, the shift, scale and rotation invariant optical pattern recognition was realized with a high signal noise ratio of correlation output.
用这种滤波器实现了平移、旋转、尺度三重不变光学图像识别，且有较高的信噪比。
The performance of the adaptive binarization thresholding method has been compared with that classical optical correlator in the areas of correlation peak to and SNR (signal to noise ratio).
和传统的联合变换相关器结果比较，自适应阈值法对于输出的相关峰值、信噪比等主要参数都有明显提高。
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