2*2 optical switch with low loss and low random phase error and N*N optical switch array

Abstract

The invention discloses a 2*2 optical switch with low loss and low random phase error and an N*N optical switch array. First and second input waveguides are connected with first and second front benttapered waveguides respectively after passing through a first power divider; the front bent tapered waveguides in the two groups of interference arms are sequentially connected with the rear bent tapered waveguides through the front end tapered waveguide, the phase shift waveguide and the rear end tapered waveguide; and the first rear bent tapered waveguide and the second rear bent tapered waveguide are connected with the first output waveguide and the second output waveguide through a second power divider. According to the invention, the low-loss ultra-wideband power divider is obtained in anadiabatic coupling or bending directional coupling mode; the random phase error of the interference arms is reduced by introducing the wide waveguides; and the bent tapered waveguides and the taperedwaveguides are added to further reduce the random phase error of the interference arm, so that the 2*2 optical switch with low loss and low random phase error and the N*N optical switch array are finally realized; and the optical switch has the advantages of simple structure, simple process, excellent performance and the like.

Description

technical field [0001] The invention belongs to the field of integrated optoelectronic devices, and in particular relates to a 2×2 optical switch and an N×N optical switch array with low loss and low random phase error. Background technique [0002] With the rapid development of big data, smart Internet of Things and cloud computing, the demand for ultra-large-capacity optical networks is increasing, and higher requirements are also placed on the flexibility and intelligence of the next-generation optical networks. The 2×2 optical switch is the core component of optical interconnection and optical routing. It can freely select the signal transmission channel of the integrated optical chip, which plays an important role in improving the flexibility and scalability of the optical network. Among many integrated platforms, silicon integrated devices have outstanding advantages such as small size, low power consumption, and compatibility with CMOS technology. Therefore, silicon-...

AI Technical Summary

Problems solved by technology

In order to solve this problem, it is often necessary to introduce an additional power monitor and perform very cumbersome bias calibration for each optical switch unit one by one, which makes the development of N×N optical switch arrays complicated in terms of power consumption, structure and testing. facing great challenges

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