Device for generating Nyquist optical pulse based on ultra-broadband optical frequency comb
A technology of optical frequency comb and optical pulse, which is applied in the direction of optical demodulation, optics, instruments, etc., can solve the problems of complex synchronization system and multi-level generator and amplifier electrical signal processing system power loss, etc., and achieve low phase noise , low cost, small time jitter effect
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[0033] The device provided by the present invention for generating Nyquist optical pulses based on an ultra-wideband optical frequency comb can effectively control the spectral width of the generated optical frequency comb using an optical bandpass filter. This patent proposes for the first time the use of an optoelectronic oscillator system to generate Optical frequency comb with tunable repetition frequency. Utilizing the narrow-band characteristics of the phase-shifted fiber Bragg grating, a tunable single-passband microwave photonic filter is realized. Since the bandwidth of the phase-shifted fiber Bragg grating is generally about 20MHz, the phase-to-intensity conversion can be effectively realized. Since the microwave signal generated by the photoelectric oscillator has higher spectral purity and relatively better phase noise characteristics, the time stability of the generated Nyquist pulse is better, and the time jitter of the pulse can be effectively improved. By tuning...
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