An optical Fourier transform chip and system

Abstract

The optical Fourier transform chip and system provided by the embodiments of the present application are applied in the field of chip technology, and include a plurality of optical resonators and couplers, each of which is arranged in parallel, and the optical resonators include a resonant ring, A phase shifter; for any one of the optical resonators, the output end of the resonant ring is connected to the input end of the phase shifter; the output end of the phase shifter is connected to the input end of the coupler , where, when I≥2, the input end of the 1th coupler is connected to the output end of the 1st coupler and the output end of the 1st+1th phase shifter, and when I=1, the 1st The input of the first coupler and the output of the first and second phase shifters. Not only can Fourier transform be performed, but because it only includes multiple optical resonators and couplers, its volume can be greatly reduced, thereby reducing the weight of dispersive elements, reducing energy consumption and improving efficiency.

Description

technical field [0001] The present application relates to the field of chip technology, and in particular, to an optical Fourier transform chip and system. Background technique [0002] In communication, military radar, electronic warfare and many other fields, in the process of information processing, signal frequency information is often obtained through Fourier transform. The traditional electronic-based Fourier transform method is limited by the sampling rate of the analog-to-digital converter and the capability of digital signal processing. When the amount of data increases, it is often accompanied by a huge processing delay, so it is difficult to complete the measurement of broadband signals. Optical Fourier Transform, as an emerging frequency measurement method. Fourier transform can be realized by utilizing the different propagation speed of light of different frequencies in dispersive medium without digital signal processing, so the speed of spectrum acquisition is...

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Problems solved by technology

[0004] The purpose of the embodiment of the present application is to provide an optical Fourier transform chip and system to solve the problem of low efficiency of the dispersion element in the prior art

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