All-optical quantification system and method based on dynamic spectrum compression

Abstract

The invention relates to an all-optical quantification system and an all-optical quantification method based on dynamic spectrum compression. The all-optical quantification system comprises a high-nonlinearity optical fiber for converting an optical signal subjected to all-optical sampling into an optical pulse signal subjected to frequency shifting, a dynamic power equilibrium unit for performing power equilibrium on optical pulses with different wavelengths of the optical pulse signal and acquiring an optical pulse signal subjected to power equilibrium, a comb-shaped optical fiber for performing spectrum compression on the optical pulse signal subjected to power equilibrium and thus acquiring an optical signal subjected to spectrum compression, and a dispersion element for performing space separation on the signal subjected to spectrum compression and thus acquiring an quantified signal, wherein the high-nonlinearity optical fiber, the dynamic power equilibrium unit, the comb-shaped optical fiber and the dispersion element are sequentially connected. The all-optical quantification system has the advantages that the shortcomings of three pulse spectrum compression methods in the background technology are effectively overcome, the all-optical qualification precision is also improved, and the complexity of the all-optical quantification system based on soliton self frequency shifting (SSFS) is reduced; and the blank of a dynamic power control part in an all-optical analog to digital converter (ADC) is made up.

Description

technical field [0001] The invention belongs to the field of optoelectronic technology, relates to all-optical signal processing technology, and specifically refers to an all-optical quantization system and method based on dynamic spectrum compression. Background technique [0002] Digital technology has been rapidly developed and promoted, and almost all information fields (including communication, sensing, information storage and display, etc.) are developing in the direction of digitalization. Usually, the signals in nature exist in continuous form (that is, analog signals). In order to facilitate the storage, processing and transmission of signals, analog signals must be converted into digital signals. The core device is an analog-to-digital converter based on binary technology. (ADC, analog-to-digital converter), which has a wide range of applications in optical communication, radar signal processing, image processing, space communication and other fields. The sampling...

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Problems solved by technology

Optical pulses with different frequency shifts have different peak powers, and the difference between the powers will lead to unbalanced ...

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