可调RF信号光传输系统相位噪声优化设计

为了优化宽泛可调的低频基准射频信号系统、降低射频生成系统的相位噪声,采用减少部件的优化设计方法,使用调幅器改善相位噪声,实现了系统设计的简化。经过理论分析和实验验证,取得了低频射频信号条件下的系统相位噪声与频率偏移数据。结果表明,可以通过机械隔离来消除由于光纤振动产生的过量相位噪声。这在未来的光通信领域中具有一定的应用价值和实际意义。

Optimization design of phase noise of adjustable RF signal of optical transmission systems

In order to improve configuration of a widely tunable low-frequency optical radio frequency ( RF ) generation system and reduce phase noise of the system, a simplified system design was demonstrated with fewer components and improved phase noise performance by using an amplitude modulator. After theoretical analysis and experimental verification, the data of system phase noise and frequency offset was obtained under low-frequency radio signal conditions. The results show that, excess phase noise due to acoustic vibrations of optical fibers can be successfully eliminated by mechanical isolation. The study has some value and practical significance in the field of optical communication in the future.