Tunable optical switch, optical network node and optical network

Abstract

The invention discloses a tunable optical switch, an optical network node and an optical network. The tunable optical switch comprises a first waveguide, a first resonant ring and a second resonant ring, wherein the first resonant ring and the second resonant ring are sequentially arranged along the optical transmission direction in the first waveguide and are coupled with the first waveguide; the input end of the first waveguide receives incident light; the first resonant ring is used for filtering light with a first wavelength, which resonates with the first resonant ring, in the incident light, the filtered incident light is marked as intermediate light, and the intermediate light is transmitted to the second resonant ring along the first waveguide; the second resonant ring is a tunable resonant ring; and the second resonant ring is turned to change the optical path of the second resonant ring, and the output state of the intermediate light at the output end of the first waveguide is controlled. The tunable optical switch is small in number of stages, simple in array topological structure, small in size, low in manufacturing cost and higher in practicability.

Description

technical field [0001] The invention relates to a tunable optical switch, an optical network node and an optical network, and belongs to the technical field of optical communication. Background technique [0002] With the rapid development of optical communication networks, traditional communication devices with electricity as the core can no longer meet the needs of high-speed and large-capacity optical communication. Therefore, a large number of optical devices that can be applied to optical communication networks have emerged as the times require. Optical switch is an optical device that can physically switch or logically operate optical signals in optical transmission lines or integrated optical circuits, and it plays an important role in optical communication networks. [0003] Optical switches in the prior art mainly include traditional mechanical optical switches and microelectromechanical optical switches. The traditional mechanical optical switch directly couples t...

AI Technical Summary

Problems solved by technology

[0005] The purpose of this application is to provide a tunable optical switch, an optical network node and an optical network to solve the problems of existing optical switches such as large size, difficulty in forming an optical switch matrix, and difficulty in manufacturing

Images