4*4 nonblocking optical switching network based on five microring resonators

Abstract

The invention discloses a 4*4 nonblocking optical switching network based on five microring resonators. The 4*4 nonblocking optical switching network based on the five microring resonators comprises four crossing waveguide microring 1*2 photoswitches and one parallel waveguide microring 2*2 photoswitch, wherein the four crossing waveguide microring 1*2 photoswitches are respectively and directly connected with input and output ends; a first end input port 1 and a fourth end output port 4' are coupled by the microring resonator 1; not only the first end input port 1 and a third end output port 3', but also a fourth end input port 4 and a second end output port 2' are coupled by the microring resonator 2; a third end input port 3 and the second end output port 2' are coupled by the microring resonator 4; not only the third end input port 3 and a first end output port 1', but also a second end input port 2 and the fourth end output port 4' are coupled by the microring resonator 3; and the microring resonator 5 is used for connecting optical channels from the fourth end input port 4 to the first end output port 1' and from the second end input port 2 to the third end output port 3'. According to the 4*4 nonblocking optical switching network based on the five microring resonators, the nonblocking routing and switching of four bidirectional ports is completed through the five microring resonators; the microring resonators are decreased to five; in other words, the microring resonators are decreased by 37.5%; therefore, the insertion loss, the power consumption and the area are reduced; and crosses are reduced to six, so that the insertion loss and the crosstalk of the switching network are decreased, and the expandability of an optical interconnection network is enhanced.

Description

technical field [0001] The invention relates to an optical interconnection network architecture, in particular to a 4×4 non-blocking optical switching network based on five microring resonators. Background technique [0002] With the development of semiconductor technology, the integration density of a single processor has increased significantly, and the processor is developing in the direction of multi-core and many-core, making the interconnection between cores one of the key factors restricting the overall performance of the processor. How to meet the delay and speed requirements in the future multi-core system with low power consumption has become a major challenge in the field of integrated optoelectronics. [0003] With the further improvement of multi-core processors' performance requirements for interconnection networks, the limitations of electrical interconnection technology have become more and more obvious, and will gradually not meet the requirements of multi-p...

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Problems solved by technology

[0003] With the further improvement of multi-core processors' requirements for interconnection network performance, the limitations of electrical interconnection technology have become more and more obvious, and will gradually not meet the requirements of multi-processor system interconnection network communication bandwidth, delay speed, and power consumption.

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