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基于光注入法布里-珀罗(F-P)激光器的波长选择性放大理论,设计并实现了一种窄带可调谐的单通带微波光子滤波器(MPF)。通过改变注入锁定参数,研究了注入锁定参数对中心频率、插入损耗和带外抑制比等性能指标的影响,以及波长功率放大与腔模红移的关系。实验结果表明,通过合理调节注入功率比、主从激光器失谐频率和偏置电流,可以获得带外抑制比为27.9dB、3dB带宽为275 MHz和调谐范围为9~32GHz的MPF。所提结构可以应用于高频、宽带可调谐的滤波选频和光电振荡。
Based on the wavelength-selective amplification theory of light-injection Fabry-Perot (F-P) lasers, a narrow-band tunable single-pass microwave photonic filter (MPF) is designed and implemented. By changing the injection locking parameters, the effects of injection locking parameters on performance such as center frequency, insertion loss and out-of-band rejection ratio, and the relationship between wavelength power amplification and cavity mode redshift were studied. The experimental results show that the MPF with 27.9dB out-of-band rejection, 275MHz 3dB bandwidth and 9 ~ 32GHz tuning range can be obtained by adjusting the injected power ratio, the detuning frequency of the master-slave laser and the bias current. The proposed structure can be applied to high-frequency, broadband tunable filter frequency selection and optical oscillation.