Arbitrary waveform light pulse generator

An arbitrary waveform light pulse generator is composed of a single wavelength laser, a polarization controller, amplitude modulators, an adjustable tuning band pass filter, a microwave delay line, a 20:80 coupler, a microwave coupler, a microwave source and an erbium-doped optical fiber amplifier. Microwave generated through the microwave source is divided into two paths through the coupler, the paths pass through the adjustable microwave delay line, the single wavelength laser is modulated through the one amplitude modulator, an upper side band is filtered out through the adjustable tuning band pass filter and is divided into two parts through the 20:80 coupler, 20% of the part is taken as a frequency of frequency comb while 80% of the other part is modulated through the other amplitude modulator, another frequency of the frequency comb is generated, the microwave delay line is adjusted according to the amplitude modulation principle, the phase position of the frequency comb can be adjusted, the frequency comb can be adjusted in amplitude by adjusting driving current of the erbium-doped optical fiber amplifier, and sizing is realized, the phase position and amplitude adjusting method is simple, and steady operation under constant temperature can be achieved.