An Optical Waveguide Ring Resonator Based on Asymmetric Directional Coupler

Abstract

The invention discloses an optical waveguide ring resonator based on an asymmetric directional coupler, which is applied in the fields of optical communication, optical information processing, and optical sensing to realize functions such as wave filtering, delay, and sensing, and includes a backbone waveguide, a multimode Waveguide and ring waveguide, backbone waveguide and multimode waveguide constitute an asymmetric directional coupler, which can realize multiple ring waveguide resonators coupled to the backbone waveguide at the same time, so that the vernier effect can be used to increase FSR and realize high-performance ring resonator , its structure is easy to expand. By designing different asymmetric couplers, the number of ring resonators used can be extended from two to three, or even more, and the size of the device will not increase significantly. The ring resonator has a compact structure, can achieve high performance with a small size, and further promotes the application of the ring resonator in the fields of optical communication, optical information processing, and optical sensing, and provides important technical support for the above fields. Greater application value.

Description

technical field [0001] The invention relates to the technical fields of optical waveguide devices, optical communication, optical information processing and optical sensing, in particular to an optical waveguide ring resonator based on an asymmetric directional coupler. Background technique [0002] Since the birth of laser technology and low-loss optical fiber technology, optical communication technology, optical information processing technology and optical sensing technology using laser as information carrier have achieved rapid development and achieved remarkable achievements, which have promoted the rapid development of human society. to the information age. Today, the acquisition, transmission and processing of information have played a vital role in various fields related to national security and national livelihood, such as national defense, communication, transportation, education, medical care, and environmental protection, and determine the development of these fi...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an optical waveguide ring resonator based on an asymmetric directional coupler, aiming at the problem that the series structure of the traditional cascaded ring resonator causes a large volume and is not conducive to further integration, the proposed resonance Two or more waveguide rings in the filter structure are coupled to the main waveguide simultaneously through an asymmetric directional coupler, so that it uses the vernier effect to increase the free spectral range (FSR) while maintaining the compactness of the structure

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