How to Increase the Analog-to-Digital Converter Speed in Optoelectronic Systems of the Seed Quality Rapid Analyzer

Sokolov Sokolov,Novikov Novikov,Kamenskij Kamenskij,Ivetić Ivetić

doi:10.3390/inventions4040061

Abstract

This invention is relevant when working as part of optoelectronic systems, including non-destructive quality control of forest seeds. The possibility of synthesis of the ultrafast optical analog-to-digital converter (ADC) providing conversion of analog information to digital in the sub-GHz range is considered. The functional scheme of the optical ADC, containing technologically well-developed optical elements is given; the principle of operation is described in detail. The possibility of increasing the speed of the ADC to make it potentially possible for optical data processing schemes is shown.

Highlights

In modern forest seed production, challenges for non-destructive seed quality control often arise [1]
A very urgent task is the development of an analog-to-digital converter (ADC) with a conversion rate commensurate with the potential possible speeds of optical switching circuits
The scheme of connection of the functional elements of the optical ADC is shown in Figure 1; it should be noted that the outputs from the first to the M-th K-output optical splitter 2 are connected to the inputs of optical banners 31 . . . 3M, and (M + 1)-th

Summary

Introduction

In modern forest seed production, challenges for non-destructive seed quality control often arise [1]. The disadvantages of the ADC based on waveguide Mach-Zehnder type modulators [18] are the ability to convert the input analog signal only to gray code (and not the positional binary code) and the overall low performance of the ADC due to the need to use a large number of electronic elements (photodetectors, amplifiers, comparator, etc.) in the terminal cascade with a total response time ≥ 10−6 s. Such a short response time does not allow to process information in the sub-GHz range. Let us consider further the possibility of synthesis of optical ADC, which provides conversion into positional binary code of electrical analog signals in control and communication systems, information processing in which is carried out in sub-GHz and large ranges

The Optical ADC Principle

Function

Findings

Conclusions