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提出级联佛克脱型原子滤光器(LinkedVADOF)的新构想。从理论上分析并计算了级联佛克脱型原子滤光器的透射谱。结果表明,级联佛克脱型原子滤光器将佛克脱型原子滤光器的多峰改造为单峰结构,具有比佛克脱型原子滤光器更窄的线宽和更高的噪声抑制比。将这种新型结构应用于激光信标锁频。该锁频方案提高了信标光频率的稳定性。在此基础上,给出了发射端采用级联佛克脱型原子滤光器锁频,接收端采用法拉第型原子滤光器(FADOF)滤光的新型卫星激光链路系统。外场初步联调实验表明了该系统的可行性。
Proposed a new concept of cascaded Fork atomized filter (LinkedVADOF). The transmission spectra of cascaded Fork atomic filter are analyzed and calculated theoretically. The results show that the cascaded Fork atomized atomic filter modifies the multimodal Fork atomic filter to a unimodal structure with narrower linewidth and higher Noise rejection ratio. This new structure is applied to laser beacon locking. The frequency locking scheme improves the stability of beacon optical frequency. On this basis, a new type of satellite laser link system using cascaded Fork-type atomic filter for frequency locking and FADOF filter on the receiving end is given. The initial field experiment shows that the system is feasible.