Mode conversion multiplexer based on plasma structure

Abstract

The invention discloses a mode conversion multiplexer based on a plasma structure, and relates to the field of integrated optics of optical communication. The mode conversion multiplexer comprises a silicon dioxide substrate, a metal layer and a polymer waveguide layer, wherein the metal layer is deposited on the silicon dioxide substrate; the polymer waveguide layer is deposited on the metal layer and comprises a first coupling waveguide, a first input waveguide, a first input coupler, a second coupling waveguide, a second input waveguide, a second input coupler and a wide waveguide; the first coupling waveguide comprises a first input end and a first output end; the first input waveguide is connected with the first input end; the first input coupler is disposed on the first input waveguide; the second coupling waveguide is spaced with the first coupling waveguide and comprises a second input end and a second output end; the second input waveguide is connected with the second input end; the second input coupler is disposed on the second input waveguide; the wide waveguide is connected with the second output end and is used for transmitting light which is converted into a high-order mode from the first coupling waveguide and light with a mode in the second coupling waveguide as the base mode. The mode conversion multiplexer based on the plasma structure is small in size and wide in working range.

Description

technical field [0001] The invention relates to the field of integrated optics of optical communication, in particular to a mode conversion and multiplexer based on a plasma structure. Background technique [0002] In recent years, multi-level modulation formats, coherent carrier multiplexing such as OFDM, and mode multiplexing have been effective methods for improving capacity in optical communication systems and on-chip optical interconnections, especially mode-division multiplexing can give optical fibers and On-chip optical networking provides new degrees of freedom, so mode-division multiplexing can be used to increase interconnect channels when the number of light sources is limited. [0003] Mode division multiplexing of free space optical type, mode division multiplexing of fused fiber type, and silicon-based mode division multiplexers have been studied in optical communication. Due to the size of the free space optical mode multiplexer Large, complex structure, and...

AI Technical Summary

Problems solved by technology

[0004] However, the existing silicon-based mode division multiplexers have the problems of large size, long coupling region length, and narrow working range.

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