Noise analysis of an amplified fiber-optic recirculating-ring delay line
Noise analysis of an amplified fiber-optic recirculating-ring delay line
复制标题
放大光纤循环环延迟线的噪声分析
DOI：
10.1109/50.285340
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发表时间：
1994
影响因子：
4.7
通讯作者：
K. Blotekjaer
中科院分区：
文献类型：
--
作者：
J. T. Kringlebotn;K. Blotekjaer
我们提出了第一个理论和实验分析的光纤再循环环延迟线（RDL），包括掺杂光纤放大器，以补偿往返损耗。热类源和激光源被认为是。类热源的输出源诱导噪声（信号-信号差拍噪声）、信号-自发（s-sp）差拍噪声和自发-自发（sp-sp）差拍噪声谱是根据输出检测器电流的自相关函数计算的。结果表明，三个电拍频噪声谱都可以表示为输出光信号与ASE谱的相关性。源引起的噪声通常将是主要的噪声源，但在某些应用中，其他噪声项也将是重要的。我们使用我们的理论来定义在一个放大的RDL与脉冲源，其中的基本噪声地板是由sp-sp拍噪声的最大数量的再循环。>
We present the first theoretical and experimental noise analysis of a fiber-optic recirculating-ring delay line (RDL) including a doped fiber amplifier to compensate for the roundtrip loss. Both thermal-like sources and laser sources are considered. The output source induced noise (signal-signal beat noise), signal-spontaneous (s-sp) beat noise, and spontaneous-spontaneous (sp-sp) beat noise spectra for a thermal-like source are calculated from the autocorrelation function of the output detector current. It is shown that all three electrical beat noise spectra can be expressed as correlations of the output optical signal and ASE spectra. The source-induced noise will normally be the dominating noise source, but in some applications, the other noise terms also will be of importance. We use our theory to define the maximum number of recirculations in an amplified RDL with a pulsed source, where the fundamental noise floor is determined by the sp-sp beat noise. >