Two-mode injection-locking analysis of Fabry-Perot laser for optically generating millimeter wave signal in ROF system

We report the experimental and theoretical investigation of injection locking technique of the Fabry-Perot laser to generate the two-mode optical millimeter-wave signal. The relation of locking bandwidth, output light power, and the gain of signal-to-noise ratio versus the ratio of injection power and the mode building process of injection locking are measured and theoretically analyzed. The experimental results agree with the input and output power relationship obtained by multi-mode rate equation followed by injection term and the law of conversation of energy.