Arbitrary waveform generation device and method based on integer-order time domain Talpot effect

An arbitrary waveform and generating device technology, applied in the field of arbitrary waveform generating devices, can solve the problems of difficult modulation of expected signals, too fast optical pulse rate, etc., and achieve the effects of improving energy utilization, reducing complexity, and facilitating operation

Inactive Publication Date: 2020-10-13
HANGZHOU DIANZI UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the optical pulse rate is too fast in the prior art and it is difficult to mo

Method used

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  • Arbitrary waveform generation device and method based on integer-order time domain Talpot effect
  • Arbitrary waveform generation device and method based on integer-order time domain Talpot effect
  • Arbitrary waveform generation device and method based on integer-order time domain Talpot effect

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Embodiment 1

[0029] Such as figure 1 As shown, the present embodiment is based on the arbitrary waveform generating device of the integer-order time-domain Talbot effect, including a narrow-linewidth continuous optical laser 1, a radio frequency signal generator 2, a push-pull Mach-Zehnder modulator 3, a dispersive optical fiber 4, and a photoelectric Detector 5. A narrow-linewidth CW laser 1, a push-pull Mach-Zehnder modulator 3, a dispersion fiber 4, and a photodetector 5 are connected in sequence. The radio frequency signal generator 2 is connected with a push-pull Mach-Zehnder modulator 3 . The narrow-linewidth CW laser 1 continuously generates a Gaussian light pulse sequence with a repeating period. The radio frequency signal generator 2 generates multiple channels of periodic analog radio frequency signals with different frequencies. The Gaussian optical pulse sequence and the periodic analog radio frequency signal are simultaneously fed into the push-pull Mach-Zehnder modulator 3...

Embodiment 2

[0036] Corresponding to the above-mentioned arbitrary waveform generation device based on the integer-order time-domain Talbot effect, this embodiment also provides a method for generating an arbitrary waveform based on the integer-order time-domain Talbot effect, including the following steps,

[0037] S1: The Gaussian optical pulse sequence generated by the narrow linewidth continuous optical laser and the periodic analog RF signal generated by the RF signal generator are simultaneously added to the push-pull Mach-Zehnder modulator;

[0038] S2: In the push-pull Mach-Zehnder modulator, the Gaussian optical pulse sequence samples the periodic analog RF signal to obtain the periodic optical pulse sequence of the instantaneous frequency of the periodic analog RF signal; the push-pull Mach-Zehnder modulator samples the periodic analog RF signal Partial carrier suppression modulation;

[0039] S3: The periodic optical pulse sequence enters the dispersion fiber whose first-order d...

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Abstract

The invention relates to the field of signal processing and signal generation, in particular to an arbitrary waveform generation device based on an integer-order time domain Talbot effect. A radio frequency signal generator is connected with a push-pull Mach-Zehnder modulator; a Gaussian light pulse sequence generated by the narrow-linewidth continuous light laser and a periodic analog radio frequency signal generated by the radio frequency signal generator are simultaneously added into the push-pull Mach-Zehnder modulator; the periodic analog radio frequency signal is sampled by the Gaussianoptical pulse sequence to obtain a periodic optical pulse sequence of the instantaneous frequency of the periodic analog radio frequency signal; the periodic light pulse sequence enters a dispersion optical fiber of which the first-order dispersion coefficient meets an integer-order time domain Talpot effect; and an optical pulse sequence is output through the dispersion optical fiber. According to the invention, the expected ideal output time waveform is generated according to the relationship between the output optical pulse sequence and the input periodic analog radio frequency signal.

Description

technical field [0001] The invention relates to the field of signal processing and signal generation, in particular to an arbitrary waveform generation device and method based on the integer-order time-domain Talbot effect. Background technique [0002] With the continuous high-speed development of scientific information technology, correspondingly, obtaining efficient signal generation and processing methods has become a top priority. The high-speed optical pulse sequence with programmable envelope also has great application scenarios in the processing of all-optical signals and the generation of arbitrary waveforms. Traditional progressive pulse spectrum shaping is often limited by the spectral resolution of the optics. Since the highest spectral resolution of modern optical devices is 10GHZ, it is very difficult to process optical pulses below 10GHZ; and the use of high-speed electro-optical modulators and broadband arbitrary waveform generators to generate arbitrary tim...

Claims

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Application Information

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IPC IPC(8): H04B10/50H04B10/508H04B10/516H04B10/2525G01J1/42
CPCG01J1/42G01J2001/4238H04B10/2525H04B10/503H04B10/508H04B10/516H04B10/5165
Inventor 胡淑云唐向宏池灏杨波欧军杨淑娜翟彦蓉
Owner HANGZHOU DIANZI UNIV
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