Research Of The Ultrashort Optical Pulse Based On Time Lens

The treatment of ultrashort optical pulse signal is a hot topic in the world,and the ultrashort optical pulse is widely used in communication,detection and imaging.The generation of ultrashort optical pulses and the treatment of ultrashort optical pulses are extremely important.Time lens is a new type of optical signal processing equipment,in the light processing system has a very important role.Time lens can be used in the ultra-short light pulse signal generation,but also on the ultra-short light pulse signal from the amplification,reduce the role of the time domain can be more easily detected and processed,reducing the measurement equipment Accuracy.Time-based imaging system can be high-speed pre-processing of ultra-short optical pulse,but also can produce ultra-short optical pulse signal,has a wide range of applications.The Fourier system based on time lens can convert the time domain of the signal directly into frequency domain output,real-time Fourier transform,can observe the signal spectrum directly with the oscilloscope and other instruments,and the system can carry on the signal in the frequency domain Filtering,modulation and other applications,to better carry out deep-seated research on the signal.We mainly use OptiSystem experimental platform,the ultra-short optical pulse time-frequency conversion system simulation,simulation of the Fourier transform system and anti-Fourier transform system.In this paper,the Fourier transform system and the inverse Fourier transform system are used to investigate and simulate the ultrashort optical pulse.The time-frequency conversion system based on time lens is analyzed theoretically,and the result is simulated by Opti System platform,and the result is very good.This paper introduces a method to realize the time-domain envelope of ultrashort optical pulse.Based on the time lens,the anti-Fourier transform system is realized,and the instrument precision of the ultrashort optical pulse is solved.The time-domain information of the ultrashort optical pulse is converted To the frequency domain,the frequency domain information through the spectrometer,you can get the original signal on the spectrometer time domain signal,and analysis of the systemreliability and error sources.In this paper,a Fourier system and inverse Fourier system of time lens are used to design a filtering system with ultrashort optical pulse.The ultrashort optical signal is obtained by Fourier system and filtered through an optical switch in the frequency domain.After filtering the pulse through the anti-Fourier system to restore the original signal to achieve the role of filtering in the OptiSystem platform for high-frequency interference signal double-Gaussian signal filtering,in the error range to achieve a better filtering effect.