Bandwidth adjustable optical switch with both wavelength selection function and mode selection function

Abstract

The invention discloses a bandwidth adjustable optical switch with both a wavelength selection function and a mode selection function, which comprises a substrate, a first buffer layer, a first waveguide layer, a second waveguide layer and a second buffer layer, wherein the first buffer layer covers the upper surface of the substrate, the first waveguide layer covers the upper surface of the firstbuffer layer, the second buffer layer covers the upper surface of the first waveguide layer, the second waveguide layer is arranged on the upper surface of the first waveguide layer and is embedded in the second buffer layer, the second waveguide layer comprises 9 Y branches and two series coupling micro-ring resonator arrays, each Y branch is respectively provided with a main port, a first branch port and a second branch port, and each series coupling micro-ring resonator array is respectively formed by arranging 20 series coupling micro-ring resonators with interference coupling in a 5-row-4-column manner. The bandwidth adjustable optical switch of the invention has the advantages that when the bandwidth adjustable optical switch is applied to an optical network, the channel bandwidth can be flexibly allocated, the wavelength and the mode can be dynamically scheduled, and the bandwidth utilization rate and the overall transmission performance of the optical network can be improved.

Description

technical field [0001] The invention relates to an optical switch, in particular to a bandwidth-adjustable optical switch with both mode and wavelength selection functions. Background technique [0002] With the development of emerging applications with increasing bandwidth requirements, network traffic is growing rapidly, and due to the rapid increase in network transmission requirements, optical networks need to be updated to increase spectrum transmission rates and transmission capacity. The optical communication network mainly develops in the three directions of large capacity, intelligence and IP. Under the current information transmission requirements, although the traditional wavelength division multiplexing network (WDM) has great advantages in high-speed transmission, its wavelength The channel interval is fixed, generally 50GHz, which is in contradiction with the modern communication network with increasing transmission volume and faster and faster transmission sig...

AI Technical Summary

Problems solved by technology

However, the mode wavelength selective optical switch composed of the silicon-based multimode 1×2 switch and the 2×2 switch array can only output mode wavelength signals with a fixed bandwidth, and the bandwidth cannot be changed with the change of transmission requirements, thus resulting in bandwidth very low utilization

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