Multicore-fiber optical interconnection structure

Abstract

The invention discloses a multicore-fiber optical interconnection structure, belonging to the field of optical communication. The multicore-fiber optical interconnection structure comprises an array end, an optical waveguide, a vertical coupler and a multicore fiber, wherein one end of the optical waveguide is connected with the array end, and the other end of the optical waveguide is connected with the vertical coupler; and an the multicore fiber is vertical to the optical waveguide and is arranged above the vertical coupler. An optical signal incident from the array end is propagated along the optical waveguide to the vertical coupler, the direction of propagation is changed by 90 degrees into the direction vertical to the optical waveguide, and the optical signal is coupled into a fiber core corresponding to the multicore fiber. An optical signal incident from the multicore fiber is propagated into the vertical coupler, the direction of propagation is changed by 90 degrees, the optical signal is changed into a light beam propagated along the direction of the optical waveguide, and the light beam is guided through the optical waveguide and is coupled into a photoelectric detector array of the array end. The multicore-fiber optical interconnection structure has the advantages of simple process, lower cost, higher integration level and smaller size, is suitable for scale production, can increase the degree of freedom of putting of an array device interconnected with the multicore fiber, and causes a circuit board design to be simpler.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to a multi-core optical fiber optical interconnection structure. Background technique [0002] With the gradual improvement of communication capacity requirements, more and more optical signals are transmitted in a unit path, and technologies such as wavelength division multiplexing can no longer meet the requirements, so multi-core optical fiber technology has been valued. Multi-core optical fiber is an optical fiber with multiple cores in a common cladding region, which can reduce the number of optical fibers, and has a good application prospect for data communication with high volume requirements. Generally speaking, the array end of the optical communication device is on a straight line, but the core distribution of the multi-core optical fiber is not on a straight line. At present, the conventional method for coupling optical signals from the array end of the optical commun...

AI Technical Summary

Problems solved by technology

Generally speaking, the array end of the optical communication device is on a straight line, but the core distribution of the multi-core optical fiber is not on a straight line. At present, the conventional method for coupling optical signals from the array end of the optical communication device into the multi-core optical fiber is: Free space optical coupler is used to couple the optical signal at the array end of the optical communication device into the multi-core optical fiber. It is made by fusion tapered process. The process is very complicated, the volume is large, the integration degree is low, and the cost is high, so it is not suitable for mass production. , and the port distribution at the array end must be similar to the multi-core fiber core distribution, which limits the freedom of device design to a certain extent

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