分析探测技术中探测器自身噪声和背景噪声, 发现背景噪声对微弱信号探测造成的影响远大于探测器自身噪声。因此, 文中提出基于光纤耦合分束技术, 实现由小面元探测器替代大面元探测器, 既能提高信噪比, 又能降低背景弥散斑影响。

Based on analyzing the noise from detectors and background, it is found that the influence of background noise on the detection is more than that of itself. Therefore, based on the fiber coupled beam splitting technology, the small area detector is used to replace the large area detector. It can achieve high signal-to-noise ratio (SNR) and reduce the speckle interference of the background light.