A kind of XOR and XOR logical operation unit based on optical mode

Abstract

The invention discloses an XOR and XOR logic operation unit based on an optical mode, which includes a set of input waveguides and output waveguides supporting multi-mode transmission and two sets of dynamic mode conversion devices controlled by operand signals; a single mode input The light source acts as a carrier, passing through two groups of mode conversion devices in turn, and controlling whether the mode conversion device converts the input mode to another mode through each operand, and detecting the components of each mode at the output waveguide, and passing through a light Propagation and collection can obtain the logical operation results of XOR and XOR at the same time. The logic operation unit can use different waveguide modes to calculate in the same wavelength, reducing the cost of the entire optical logic circuit; at the same time, it is insensitive to input wavelength and ambient temperature changes. It can be realized by using a variety of material platforms, and can realize the parallel logic operation of exclusive OR and exclusive OR of electro-optic and all-optical according to different modulation methods.

Description

technical field [0001] The invention belongs to the technical field of optical logic operation and signal processing, and relates to an XOR and XOR logic operation unit based on an optical mode. Background technique [0002] The two logical operations of XOR and XOR have important applications in many occasions such as information encoding and decoding, signal parity check, data encryption and decryption, image processing, and random number generation. With these applications, the demand for larger information capacity, higher integration, and massive data processing has led to a significant temperature rise in the operating environment of the system. The use of optical methods to realize logic operations has the characteristics of low heat generation, high speed, and small delay. It is a new signal processing method with potential. Therefore, the practice of processing by optical means is gradually gaining favor. Due to the inherently high bandwidth and high parallelism o...

AI Technical Summary

Problems solved by technology

However, due to the inherent wavelength sensitivity and temperature sensitivity of the resonant structure, the logic unit has high requirements for the accuracy of the wavelength and the stability of the ambient temperature. At the same time, multiple wavelengths are required to achieve multi-channel operations. The requirements are also higher

In addition, there is also a logical operation unit based on a dual-arm interference structure, but it has disadvantages such as large device volume

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