Temperature sensor capable of conversion fluorescent radiation and manufacturing method thereof

Abstract

The invention relates to a temperature sensor capable of conversion fluorescent radiation and a manufacturing method thereof and belongs to the field of solid lasers. The structure of the sensor is asingle-mode optical fiber-multimode optical fiber-suspended three-core hollow special optical fiber-multimode optical fiber-single-mode optical fiber structure; the sensor specifically includes a single-mode optical fiber, a multimode optical fiber, a suspended three-core hollow special optical fiber, and erbium ytterbium co-doped tellurate glass microspheres; the erbium ytterbium co-doped tellurate glass microspheres are built in the three-core hollow special optical fiber; and the middle portion of the suspended three-core hollow special optical fiber forms a tapered waist through fused tapering. According to the temperature sensor of the invention, a structural advantage that air holes exist inside the hollow optical fiber is utilized to naturally encapsulate the microspheres inside theoptical fiber, and therefore, the coupling excitation of microsphere resonator inside the optical fiber is realized without additional operation required; the special optical fiber prepared by the method is provided with a built-in gain microsphere photonic integrated device, and therefore, the special optical fiber achieves strong up-conversion fluorescence radiation under the excitation of pumplight, and exhibits high temperature sensing performance.

Description

technical field [0001] The invention belongs to the field of solid fiber lasers, and in particular relates to a temperature sensor for converting fluorescent light and a manufacturing method thereof. Background technique [0002] In recent years, luminescent materials doped with rare earth ions have attracted much attention because of their photoluminescent properties and potential applications. Through high-energy near-infrared laser pumping, glass matrix materials doped with rare earth ions can realize upconversion luminescence from near-infrared to visible light, and can be used in many fields such as three-dimensional display, laser fiber amplifier, and fluorescent refrigeration. Among them, blue-green light and white light based on the three primary colors of red, green and blue have many application values ​​in high-density data storage, life sciences, laser medical treatment, three-dimensional display and other fields. Up-conversion luminescence by doping rare-earth ...

AI Technical Summary

Problems solved by technology

[0005] In order to fill the gap in the research of photonic integrated devices with built-in gain microspheres in optical fibers, the purpose of the present invention is to design an optical fiber structure with built-in gain microspheres, which can successfully couple and excite the microspheres to achieve fluorescence or even laser output. The structure is compact and easy to manufacture. It is simple and overcomes the shortcoming that the tapered fiber-microsphere coupling system is easily affected by the environment. The integrated device prepared shows good sensing performance in temperature sensing, which opens up a new field for the application of rare earth doped glass luminescent materials. way

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