Optical analog-to-digital conversion architecture based on photon parallel sampling and implementation method thereof

Abstract

The invention discloses an optical analog-to-digital conversion architecture based on photon parallel sampling. Based on a photonics technology, an optical sampling clock with the repetition frequencyof fs is decomposed into N paths; the relative delay of each path is controlled to be 1 / (fs*N), then N paths of optical sampling clocks with equal time intervals are respectively input into N identical photon sampling gates, photon parallel sampling is completed, and optical analog-to-digital conversion with the actual total sampling rate of N*fs for the same sampled signal source is realized. According to the architecture, an optical analog-to-digital conversion system with a high sampling rate can be realized based on a low-speed optical sampling clock, and the design requirement on the optical sampling clock is reduced. The complexity of a demultiplexing module in the system is simplified, and the optical path loss can be effectively reduced. The architecture is expected to become a solution of a next-generation high-speed high-precision on-chip optical analog-to-digital conversion system.

Description

technical field [0001] The invention relates to photon information processing, in particular to an optical analog-to-digital conversion architecture based on photon parallel sampling and an implementation method thereof. Background technique [0002] In today's information age, data transmission, processing, and analysis are ubiquitous, permeating all aspects of life, military affairs, and scientific research. However, the signals in the natural world exist in the form of analog and continuous, so the analog-to-digital converter becomes a bridge connecting the analog world and the digital world. In order to meet people's demand for massive data in the era of information explosion and the requirements for information quality in various fields, the development of analog-to-digital converters to higher speed and higher precision has become an inevitable trend. However, the current analog-to-digital converters based on electronic technology are close to their physical limits in...

AI Technical Summary

Problems solved by technology

However, when the optical analog-to-digital conversion system based on time-wavelength interleaving is developing towards high speed and high precision, it means that the number of optical pulse multiplexing and demultiplexing channels based on time-wavelength interleaving will increase greatly, and the complexity of the system will become higher and higher. As a result, the design requirements for unit devices are getting higher and higher.

The optical analog-to-digital conversion system based on cascaded modulators requires an increase in the repetition frequency of the optical sampling clock as the total sampling rate of the system increases, and cascading multiple modulators will bring huge optical path losses, seriously affecting the optical mode. Digital Conversion System Performance

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