Fiber integrated micro lens group

Abstract

The invention provides a fiber integrated micro lens group. The fiber integrated micro lens group is formed by connecting two sections of optical fibers which are prepared through thermal diffusion, wherein the refractive index distribution of the two sections of optical fibers is circumferential symmetry quasi-Gaussian distribution and circumferential symmetry reverse quasi-Gaussian distribution.The fiber integrated micro lens group is formed by placing optical fibers in a constant-temperature field and performing thermal diffusion preparation and connection, and after a fiber core dopant ofthe optical fibers is diffused, refractive index distribution is changed into circumferentially symmetrical quasi-Gaussian distribution, and the fiber integrated micro lens group can be equivalent toa micro convex lens; refractive index distribution is changed into circumferential symmetry reverse quasi-Gaussian distribution, and the fiber integrated micro lens group can be equivalent to a micro-concave lens. The invention mainly provides a construction method of an optical fiber micro lens. Meanwhile, a fiber integrated micro lens group is constructed in an optical fiber. The fiber integrated micro lens group can be used for preparing the fiber integrated micro lens, and can be widely applied to the fields of micro endoscopes based on fiber integrated micro lens groups, cell biologicaloptical fiber imaging systems, optical fiber optical tweezers systems, micro unmanned aerial vehicles and the like.

Description

[0001] (1) Technical field [0002] The invention relates to a fiber-integrated microlens group, which can be used for the preparation of fiber-integrated microlenses, and can be widely used in microendoscopes based on fiber-integrated microlens groups, cell biological optical fiber imaging systems, optical fiber optical tweezers systems, micro UAV and other fields belong to the field of fiber integration technology. [0003] (2) Background technology [0004] Fiber-integrated micro-optical components have the advantages of small size, light weight, flexible design and manufacturing, low manufacturing cost, and easy array and mass production. They can realize functions that are difficult to achieve with ordinary optical components. It has important application value in aerospace, biomedicine, laser technology, optical computing and other fields. [0005] Generally, there are three types of fiber optic microlenses. The fiber optic microlens that first appeared and is the easies...

AI Technical Summary

Problems solved by technology

The third is to use high-precision 3D printing technology to print polymer lenses directly on the fiber end surface in recent years to prepare fiber microlenses. This method can prepare microlenses and microlenses with high precision and high degree of design freedom. arrays, but the required equipment is very expensive and difficult to obtain, and polymer materials have limited its range of applications

The optical waveguide lens can be used for collimation or focusing of light beams, but the lens manufactured by this method has complicated process and high production cost

Images