Comb means Nyquist light pulse generated based on optical frequency ultrawideband

Based on ultra wideband optical frequency comb generator means Nyquist pulse of light, the present invention comprises the following components: a narrow linewidth laser and a first wavelength division multiplexer, a polarization controller, Fabry - Perot electro-optic modulator, temperature control device, an optical coupler, a circulator, a phase-shifted fiber Bragg grating, an optical amplifier, a photodetector, an electrical amplifier, an electrical phase shifter, T bias, DC bias, optical bandpass filter, the spectral analyzers, quantum dot mode-locked lasers, a second wavelength division multiplexer, a plurality of electro-optic modulator and the optical coupler. The present invention can overcome the conventional electronically bandwidth disadvantage, as a light source for optical fiber communication, can greatly improve the spectrum utilization of optical fiber communication systems.