Integrated optical mode switch compatible with wavelength division multiplexing function and mode division multiplexing function

Abstract

The invention relates to an integrated optical mode switch compatible with a wavelength division multiplexing function and a mode division multiplexing function. The integrated optical mode switch comprises a plurality of multiplexing units arranged sequentially; every two adjacent multiplexing units are connected together through an adiabatic cone; the multiplexing unit is composed of a pluralityof micro-ring resonators which are connected with one another sequentially; the micro-ring resonator comprises a first straight waveguide and a second straight waveguide which are arranged in parallel; a nano-silicon-based nanowire micro-ring is arranged between the two straight waveguides; the first straight waveguides of two adjacent micro-ring resonators in the same multiplexing unit are connected with one another; all the first straight waveguides in the same multiplexing unit are connected with one another so as to form a first output waveguide; and the first output waveguide of one multiplexing unit is connected with an output waveguide in a multiplexing unit adjacent to the multiplexing unit. With the optical mode switch adopted, the multiplexing of M modes and N wavelengths can berealized, and the mode of each input end, which is multiplexed into a trunk waveguide, can be freely selected and dynamically switched, so that the number of input ends and output ends in a mode division multiplexing system can be freely allocated, and the paths of the mode division multiplexing system can be selected freely.

Description

technical field [0001] The invention belongs to the technical field of optical mode multiplexing and demultiplexing, and relates to a silicon-based integrated optical mode processing device, in particular to an integrated optical mode switch compatible with wavelength division multiplexing and mode division multiplexing functions. Background technique [0002] With the rapid development of economy and society, people's demand for large-capacity, high-speed information processing and communication technology is increasing day by day. As the most critical technology in the field of communication, integrated circuit technology has ensured that the information processing needs of the past fifty years can be met. However, the further reduction of device feature size in existing integrated circuits is limited by factors such as tunnel leakage current effects, heat dissipation, and non-linear cost increases, making it difficult for integrated circuits to continue to develop at the ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an integrated optical mode switch compatible with wavelength division multiplexing and mode division multiplexing to solve the problems that the number of input terminals and receiving terminals in the optical communication mode multiplexing system must be equal and cannot be freely connected. , the present invention has both the small size of the microring resonator and the low cost of the mature CMOS process, etc.

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