改进型相干光检测系统的设计

Improved Version of Coherent Light Detection System Design

为实现光信号幅度与相位的同时检测,设计了一种新型的零差相干检测系统,包括光路实现方案的设计和接收端数据处理的实现。实验中利用LabVIEW环境编程实现对光路方案的模拟仿真、接收端数据处理程序的实现及对两个部分进行验证。所设计的零差相干检测系统,可用于连续变量量子密钥分配系统的数据接收。

In order to achieve the detection of amplitude and phase of the optical signal at the same time, a new homodyne coherent detection system was designed, including the scheme of optical align design and the realization of receiver data processing. Considering the current widely use of virtual instrument LabVIEW programming software, the experiment uses LabVIEW programming environment to achieve the simulation of the scheme of optical align, the realization of receiver data processing,and the test for the two part. This system can be used for data reception in continuous variables quantum key distribution system.