This paper describes the noise analysis of an electro-optic (EO) sensor system based on experimental and simulation results. We developed a polarization simulator of the EO sensor system using the Jones vector and matrix. The polarization simulator included not only the laser intensity noise but also the laser polarization noise. The polarization noise was converted into an intensity noise due to the polarization noise using a polarizer after the laser source. We proposed a method to adjust differential balance using phasor diagram. The method is used for analysis of the noise characteristics. We expected that the existence of the laser polarization noise can be demonstrated by our experimental setup with and without the polarizer after the laser source. The noise characteristics of experimental results more than 4 kHz agreed with the simulation results under considering the effect of a receiver noise. However, the noise characteristics less than 4 kHz did not agree with simulation results. It was found that the noise characteristics less than 4 kHz are caused by the light intensity unbalance between p- and s- polarized light in our system.

本文描述了基于实验和仿真结果的电光 (EO) 传感器系统的噪声分析。我们使用琼斯矢量和矩阵开发了 EO 传感器系统的偏振模拟器。偏振模拟器不仅包括激光强度噪声，还包括激光偏振噪声。由于在激光源之后使用偏振器的偏振噪声，偏振噪声被转换为强度噪声。我们提出了一种使用相量图调整微分平衡的方法。该方法用于分析噪声特性。我们预计激光偏振噪声的存在可以通过我们的实验装置来证明，在激光源之后有和没有偏振器。在考虑接收机噪声影响的情况下，4 kHz以上的实验结果的噪声特性与仿真结果一致。然而，小于 4 kHz 的噪声特性与仿真结果不一致。发现小于4 kHz的噪声特性是由光强不平衡引起的p - 和s - 我们系统中的偏振光。