Multiplexer-demultiplexer for mode multiplexing-wavelength division multiplexing hybrid technology

Abstract

The invention discloses a multiplexer-demultiplexer for the mode multiplexing-wavelength division multiplexing hybrid technology. The multiplexer-demultiplexer comprises a multi-mode input waveguide, a 1*2M mode multiplexer with an input port and 2M output ports, and M two-way (P+1)*(P+1) array waveguide grating wavelength division multiplexers with the same structures. The input port of the 1*2M mode multiplexer is connected with the multi-mode input waveguide. The 2M output ports of the 1*2M mode multiplexer are divided into M pairs with every two sequentially adjacent ports as a group, and the two input ends of each two-way (P+1)*(P+1) array waveguide grating wavelength division multiplexer are connected with a pair of output ports of the 1*2M mode multiplexer. The multiplexer-demultiplexer has the advantages that the structure is simple, design is convenient, the number of required array waveguide grating wavelength division multiplexer-demultiplexers is only half of the number in an original scheme, the device size is greatly reduced, and the consistency of the array waveguide grating wavelength division multiplexer-demultiplexers is easier to control.

Description

technical field [0001] The invention relates to a planar optical waveguide integrated device, in particular to a multiplexer-demultiplexer for the mixed technology of mode multiplexing-wavelength division multiplexing. Background technique [0002] As we all know, long-distance optical communication has achieved great success. Similarly, optical interconnection, as a new interconnection method, can overcome the bottleneck problem of traditional electrical interconnection, and has attracted widespread attention. Since J.W.Goodman proposed to adopt the optical interconnection scheme in VLSI in 1984, the research of optical interconnection has made great progress. At present, optical interconnection is continuously advancing towards ultra-short distance interconnection, and its communication capacity demand is increasing day by day. Aiming at the large amount of data transmission in the optical interconnection system, the most direct method is to borrow the wavelength divisio...

AI Technical Summary

Problems solved by technology

The shortcomings of this method are: the number of wavelength division multiplexing devices required is large, resulting in a large overall device size, and it is difficult to ensure that a large number of AWGs are completely consistent in the actual production process

Images