Multidirectional controllable electro-optical switch structure based on micro-ring coupler

By adopting a multi-directional controllable electro-optical switch structure based on micro-ring couplers in optical switches and optical networks, and using a cascade structure of symmetric directional couplers and runway micro-rings, the multi-directional controllable function of optical signals and low loss and high speed are realized. Switching solves the problem that existing optical switches and optical networks are difficult to achieve new challenges such as multi-directional controllability and high speed in the face of new generation information technology.

CN119395924APending Publication Date: 2025-02-07GUILIN UNIV OF ELECTRONIC TECH
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Patent Information

Application Number
CN202411748711.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-02
Publication Date
2025-02-07

AI Technical Summary

Technical Problem

When existing optical switches and optical networks face new challenges such as multi-directional controllability and high speed under the new generation of information technology, it is difficult to achieve low loss, high-speed switching and multiple controllable functions, which limits the development of optoelectronic interconnection and optical communication.

Method used

Adopt a multi-directional controllable electro-optical switch structure based on micro-ring coupler, and a cascade structure of a symmetrical directional coupler and runway micro-ring, and control the optical signal through electrodes to realize the direct-through output and reverse output of the input optical signal. Multi-directional controllable functions for cross-out and reverse output.

Benefits of technology

It realizes the multi-directional controllable function of optical signals, improves sideband suppression and transmission signal-to-noise ratio, reduces losses, enhances the transmission and filtering capabilities of optical signals, and is suitable for high-efficiency optical signal processing in optical interconnection networks.

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Abstract

The invention discloses a multidirectional controllable electro-optical switch structure based on a micro-ring coupler, and belongs to the technical field of optical waveguides and optical switches. The electro-optical modulation micro-ring coupler comprises an optical loop formed by a silicon dioxide cladding and a waveguide layer prepared by a lithium niobate film, wherein the optical loop comprises an input end symmetric directional coupler, an S-shaped bent waveguide and a dual-bus runway micro-ring resonator; wherein the input end symmetric directional coupler realizes straight-through output of an optical signal under a passive condition, and after 25v bias voltage is applied to an electrode, output of a cross end is realized; under the modulation of the bus waveguide electrode, the runway micro-ring coupler realizes the output of optical signal resonance to a downloading port under a passive condition and the direct output of optical signals under an active condition by applying a 25v voltage, and the cascade device realizes the function of multi-directional controllable transmission of optical signals. According to the invention, a reconfigurable on-chip optical switch network can be constructed, and filtering and high-speed modulation functions in a certain free spectral range can be realized based on the excellent electro-optical coefficient of the lithium niobate material.
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