The demodulation process of the generated DPASK pulses is investigated and the relationship between optical signal-to-noise ratio (OSNR) penalty and the input ASK power is presented.
我们研究了DPASK脉冲的解调过程以及输入ask信号功率与光信噪比代价之间的关系。
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。
The optical modulation characteristics, differential gain (DG), differential phase (DP) and signal-to-noise ratio (S/N) are described as well in this paper.
文中论述了光调制特性、微分增益（DG）、微分相位（DP）、信噪比（S/N）等重要问题。
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。
Magneto-optical disc system noise is analysed in the paper. Several methods for the improvement of signal-to-noise ratio are also summarized.
本文分析了磁光盘系统的噪声，综述了提高信噪比的几种方法。
We introduce a general model for the calculation of the optical signal to noise ratio (SNR) of the optical cross connection (OXC) in optical networks in this paper.
文章给出了计算OXC级联信噪比的一般解析模型，并针对“信号功率均衡”和“总功率均衡”两种方案进行了研究，分析了在这两种特定情况下系统的信噪比特性。
With the increasing use of optical coherence tomography, the study of the signal-to-noise ratio in low-coherence interferometry has been of increasing concern.
光纤低相干干涉技术已经被广泛用于高灵敏度的测量技术当中。
This method improves the signal-to-noise ratio of speckle interferogram and can get the same image as traditional optical interferogram.
从而提高了散斑干涉图的信噪比，获得了与光学干涉相似的干涉图象。
In addition, this paper analyses the signal-to-noise ratio for AM and FM format in TV transmission on optical fiber.
另外，概述了光纤有线电视传输，从传输的观点分析了调频制和调幅制的信噪比。
The second system is tunable laser light source based on semiconductor optical amplifier(SOA), light output power and signal-to-noise ratio are improved effectively;
第二套系统采用的是基于半导体光放大器（SOA）的可调谐激光器做光源，有效的增加了光源的输出功率，提高了信噪比；
The second system is tunable laser light source based on semiconductor optical amplifier(SOA), light output power and signal-to-noise ratio are improved effectively;
第二套系统采用的是基于半导体光放大器（SOA）的可调谐激光器做光源，有效的增加了光源的输出功率，提高了信噪比；
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