Echo wall mode resonator and preparation method thereof

Abstract

The invention discloses an echo wall mode resonator and a preparation method thereof. The resonator comprises a hollow-core optical fiber, a waveguide, a waveguide resonator, a first single-mode optical fiber and a second single-mode optical fiber. The waveguide and the waveguide resonator are located in the hollow-core optical fiber. One end face of the first single-mode optical fiber is connected with one end face of the hollow-core optical fiber through welding. One end face of the second single-mode optical fiber is connected with the other end face of the hollow-core optical fiber through welding. The waveguide comprises an input optical waveguide, an inner surface waveguide and an output optical waveguide. Two end faces of the input optical waveguide are connected with one end face of the first single-mode optical fiber and one end face of the inner surface waveguide respectively. Two end faces of the output optical waveguide are connected with one end face of the second single-mode optical fiber and the other end face of the inner surface waveguide respectively. The inner surface waveguide is provided with an evanescent field. The echo wall mode resonator prepared by the connection method has a stable and simple structure. The optical coupling between the inner surface waveguide and the waveguide resonator is realized through the evanescent field of the inner surface waveguide, which is conducive to optical integration.

Description

technical field [0001] The invention belongs to the technical field of optical devices, and in particular relates to a whispering gallery mode resonator and a preparation method thereof. Background technique [0002] Whispering gallery mode resonators confine light in the resonant cavity through continuous total reflection at the boundary of the dielectric cavity, which has important application prospects in the fields of nonlinear optics, cavity quantum electrodynamics, and ultra-high resolution detection. [0003] In the prior art, there are mainly four methods for preparing whispering gallery mode resonators, namely prism coupling method, micro-nano fiber coupling method, fiber tip coupling method and planar waveguide coupling method. Among them, the whispering gallery prepared by the prism coupling method The mode resonator has a complex structure, which is not conducive to optical integration; the structure of the whispering gallery mode resonator prepared by the micro-...

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Problems solved by technology

[0005] The main purpose of the present invention is to propose a whispering gallery mode resonator, which aims to solve the problems of complex structure, unstable structure and unfavorable optical integration of the prepared whispering gallery mode resonator existing in the prior art

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