A method for fabricating a hollow optical waveguide

By using a deposition process to form a silver thin film on the inner wall of a hollow optical waveguide, the environmental pollution and high cost problems in conventional hollow optical waveguide fabrication have been solved, achieving low-cost and environmentally friendly hollow optical waveguide fabrication.

CN117849945BActive Publication Date: 2026-07-24CHANGZHOU OPTICAL CORE INTEGRATED OPTICS CO LTD
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Patent Information

Application Number
CN202311692086.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-12-11
Publication Date
2026-07-24
Estimated Expiration
2043-12-11

AI Technical Summary

Technical Problem

Conventional hollow waveguide fabrication suffers from environmental pollution, high costs, expensive equipment, and poor uniformity.

Method used

A silver thin film is formed on the inner wall of a hollow optical waveguide by using a deposition process with hydrogen as a reducing agent through thermal ion exchange and deposition.

Benefits of technology

This method enables low-cost and environmentally friendly fabrication of hollow optical waveguides, avoiding the use of large-scale equipment, and also produces silver films with good uniformity.

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Abstract

The application relates to a preparation method of a hollow core optical waveguide and belongs to the technical field of optical material preparation. After a conventional thermal ion exchange process is carried out, a deposition process is carried out by using hydrogen, hydrogen is transmitted into the reserved part by a hydrogen transmission machine, and then the overall environment temperature is increased to 250 DEG C-500 DEG C; hydrogen is used as a reducing agent, silver ions are given electrons by breaking hydrogen bonds at high temperature, and the silver ions buried in the inner wall are reduced into silver single elements to form a silver film. The hollow core optical waveguide is simple to manufacture, does not need to be applied to large equipment, and has relatively low process technical requirements and manufacturing cost.
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