光纤参量振荡器的自动反馈控制技术研究
doi: 10.3724/SP.J.1146.2013.01551
Automatic Feedback Control Technology for Fiber Optical Parametric Oscillators
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摘要: 为了实现光纤参量振荡器(FOPO)的高精度稳定时钟信号提取，该文首次开展了基于闲频光功率的自动反馈控制实验，其中自动反馈控制单元由闲频光采集模块、自动控制信号处理模块以及延迟线驱动模块组成。测量了12.5 Gb/s归零(RZ)信号输入时自动反馈控制FOPO提取的时钟信号质量，其均方根(RMS)相位抖动值为0.92 ps，时钟提取精度明显高于之前的手动反馈控制系统。Abstract: In order to realize highly accurate and stable clock signal extraction using Fiber Optical Parametric Oscillators (FOPOs), the idler-power-based automatic feedback control experiment is implemented for the first time. The automatic feedback control unit consists of idler acquisition module, signal processing module for automatic control, and delay line drive module. By means of the automatically feedback-controlled FOPO, a high-quality optical clock signal can be extracted from the 12.5 Gb/s Return-to-Zero (RZ) data sequence and the RMS phase jitter is 0.92 ps, much better than the results obtained in the previous manual feedback control system.
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