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airy fiber with concentric ring or partially concentric ring waveguide distribution

A concentric ring and circular waveguide technology, applied in the direction of multi-layer core/cladding optical fiber, cladding optical fiber, etc., to achieve the effect of good space flexibility, strong anti-interference ability, and small structure

Active Publication Date: 2017-10-31
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the research and application of Airy beams are more and more extensive, it does not involve the use of microstructured fiber end exit fields to generate Airy beams

Method used

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  • airy fiber with concentric ring or partially concentric ring waveguide distribution
  • airy fiber with concentric ring or partially concentric ring waveguide distribution
  • airy fiber with concentric ring or partially concentric ring waveguide distribution

Examples

Experimental program
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Effect test

Embodiment 1

[0034] 1. Optical fiber preparation: Take a high-purity quartz tube, and then place it on a vapor deposition machine (using MCVD preparation process). By controlling the gas and its time, deposit multiple layers of different thicknesses on the inner wall of the quartz tube. The higher refractive index waveguide layer and the lower refractive index cladding layer, when the required waveguide layer is satisfied, the vapor deposition is completed, and then the entire sleeve is shrunk to form a prefabricated rod 13 with a refractive index distribution of 12( Such as Figure 12 shown), at last, the prepared preform is drawn out on the optical drawing tower to have the required Airy optical fiber with concentric ring waveguide distribution;

[0035] 2. Light source coupling: take a piece of Airy fiber 14 with concentric circular waveguide distribution prepared in step 1, remove the coating layer, cut, align and weld with the single-mode fiber 15 with light source pigtail, as Figur...

Embodiment 2

[0039] 1, optical fiber preparation: adopt the method in embodiment 1 step 1 to prepare an optical fiber preform rod 13, then take a quartz rod 18 with the same size as the preform rod, then cut them simultaneously, cut the 19, 20, 21, 22 four-part combination (according to the need to choose different cutting parts and combined parts) together and sleeved into the quartz sleeve 23, so just form a new optical fiber preform rod 24, finally, the optical fiber prefabricated Rod 24 pulls out required Airy optical fiber 25 (such as Figure 14 );

[0040] 2. Light source coupling: take a section of Airy fiber 25 prepared in step 1 with partial concentric circular waveguide distribution, remove the coating layer, cut, align and weld with the single-mode fiber 15 with light source pigtail, as Figure 15 ;

[0041] 3. Encapsulation protection: adjust the quartz tube with an inner diameter larger than the standard optical fiber or Airy optical fiber to the welding point 26 in the figu...

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Abstract

The present invention provides an Airy fiber with a waveguide distribution of concentric rings or partially concentric rings, comprising a cladding, a solid circular and multiple concentric ring waveguide cores, or a partially solid circular and multiple partially concentric rings Ring waveguide core. The spatial arrangement between the waveguide cores of the fiber satisfies or approximately satisfies the Airy function, and there is always an Airy fiber of a certain length. When a Gaussian beam is input to one end of the fiber, through the optical coupling between the waveguide cores, the other end of the fiber The outgoing beam of satisfies or approximately satisfies the Airy beam. The light beam emitted from the exit end of the Airy fiber of the present invention inherits or partially inherits the three characteristics of the Airy beam, that is, the light beam has lateral acceleration, no diffraction and self-healing ability, as a whole, it has a small structure, flexible operation, system stability and anti-interference ability. strong characteristics. It can be used for beam generation, particle manipulation, sensing applications, and more.

Description

(1) Technical field [0001] The present invention relates to an optical fiber, preferably for use in beam generation, particle manipulation, sensing applications, etc. using optical fibers. (2) Background technology [0002] A light wave that remains unchanged during propagation is considered a non-diffraction beam, and the most typical example of a non-diffraction wave is a Bessel beam. In 1979, M.V.Berry et al. (Am.J.Phys., 1979, 47(3): 246-267) theoretically introduced the solution of the Schrödinger equation with a diffraction-free Airy wave packet in the context of quantum science. Has the characteristic of free acceleration. In 2007, Georgios A. Siviloglou et al. (Opt.lett., 2007, 32(8): 979-981) first studied the accelerated Airy beam with limited energy, and observed the experimental results of the Airy laser beam for the first time (Frontiers in Optics, OSA , 2007.PDP_B3), the experiment verified that the Airy laser beam has unusual characteristics and can maintain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/036
Inventor 苑立波邓洪昌
Owner GUILIN UNIV OF ELECTRONIC TECH