Frequency-tunable millimeter-wave generation technique based on spectral-filtering of a supercontinuum source

In this paper, we show analytically for the first time that spectral-filtering a supercontinuum source into equally-spaced optical combs with identical comb profile can lead to the generation of frequency-tunable microwave signals. Through simulations, we observe that the frequency of the generated microwave signal can be of any integer multiple of the supercontinuum source´s repetition rate which is within the bandwidth of the photodetector used. Using a photodetector with a larger bandwidth enable the generation of millimeter-wave signal.