Special optical fiber micro-combination lens
A technology of combining lens and optical fiber, which is applied in the direction of cladding optical fiber, graded-index core/cladding optical fiber, etc., can solve the problem of not having the function of micro-combined lens, and achieve the effect of efficient preparation and low cost
Active Publication Date: 2020-09-11
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology
The optical waveguide lens can be used to collimate or focus light beams, but the lens manufactured by this method does not have the function of a micro-composite lens
Method used
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Embodiment 1
[0064] The cross-sectional schematic diagram of the coaxial dual waveguide fiber of this embodiment, such as Figure 5 Shown. 51 is the cladding of the coaxial dual waveguide fiber, 52 is the ring core of the coaxial dual waveguide fiber, and 53 is the middle core of the coaxial dual waveguide fiber.
[0065] The preparation steps of the fiber-integrated special optical fiber micro-combined lens in this embodiment are:
[0066] The first step is to make a fine design of the coaxial dual waveguide fiber, including the design of the geometric size, dopant type, and numerical aperture of the intermediate core and the ring core. The parameters of the coaxial dual waveguide fiber finely designed in this embodiment are that the cladding diameter is 125 μm, the annular core width is 8 μm, the inner diameter of the annular core is 32 μm, the diameter of the middle core is 9 μm, and the numerical aperture is 0.14. The dopant type of the coaxial dual waveguide fiber is germanium.
[0067] Th...
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Abstract
The invention provides a special optical fiber micro-combination lens. The special optical fiber micro-combination lens is prepared from coaxial double-waveguide optical fibers through thermal diffusion. The special optical fiber micro-combination lens is prepared by thermal diffusion in a constant-temperature field, and after a fiber core dopant of the finely designed coaxial double-waveguide optical fiber is diffused, the refractive index distribution is changed into circumferentially symmetrical double-hump type distribution and can be equivalent to a micro-combination lens. The invention provides a fiber-integrated special optical fiber micro-combination lens which has the advantages of being simple to manufacture and low in cost. The method can be used for preparing the fiber-integrated micro-combined lens, and can be widely applied to the fields of micro endoscopes, cell biological optical fiber imaging systems, optical fiber optical tweezers systems, micro unmanned aerial vehicles and the like based on the fiber-integrated micro-combined lens.
Description
[0001] (1) Technical field [0002] The invention relates to a special optical fiber micro-combined lens, which can be used for the preparation of fiber-integrated micro-combined lens, and can be widely used in micro-endoscope based on fiber-integrated micro-combined lens, cell biological fiber imaging system, and optical fiber optical tweezers Systems, micro drones and other fields. [0003] (2) Background technology [0004] With the development of modern industry and science and technology, people have gradually entered the information age. The rapid development of information technology requires a complete information system to achieve as many functions as possible in the smallest possible space. This requires devices that implement various functions to be as small as possible, and to develop in the direction of miniaturization and miniaturization. [0005] Fiber-integrated micro-optical components have the advantages of small size, light weight, flexible design and manufacturing,...
Claims
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IPC IPC(8): G02B6/028
CPCG02B6/028
Inventor 苑立波孟令知陈宫傣
Owner GUILIN UNIV OF ELECTRONIC TECH