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An all-solid-state broadband dispersion-compensated index-guided microstructured optical fiber

A technology of microstructure optical fiber and dispersion compensation, which is applied in cladding optical fiber, optical waveguide light guide, multi-layer core/cladding optical fiber, etc. It can solve the problems of unsuitable transmission medium, limited light guide window, difficult coupling, etc., and achieves easy The effect of preparation and reduction of process complexity

Active Publication Date: 2020-01-07
SHENZHEN SDG INFORMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is Gautam Prabhakar et al. designed a local fully solid dispersion compensation refractive index guided microstructure fiber. Although the fiber has single-point dispersion compensation characteristics or broadband dispersion compensation characteristics, the fiber still contains two layers of circular air holes, which is not easy to exist. Coupled with traditional optical fibers, due to high temperature during the drawing process, the air holes in the cladding are prone to collapse or deformation.
The second is that He Fengliang et al. designed a fully solid dispersion compensation bandgap microstructure fiber. Although the fiber has multiple zero dispersion points and negative dispersion compensation characteristics, the fiber is a bandgap fiber, which limits the light guide window and is not suitable for as transmission medium

Method used

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  • An all-solid-state broadband dispersion-compensated index-guided microstructured optical fiber
  • An all-solid-state broadband dispersion-compensated index-guided microstructured optical fiber
  • An all-solid-state broadband dispersion-compensated index-guided microstructured optical fiber

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Embodiment 1

[0031] exist figure 1 In the schematic diagram of the all-solid-state broadband dispersion-compensated refractive index guided microstructure fiber shown, the base material 4 is pure silica, the inner core cylinder 1 is a germanium-doped pure silica rod, and the outer core cylinder 2 is a layer according to the regular six Fluorine-doped pure quartz rods closely arranged in a polygonal shape; the cladding cylinder 3 is a fluorine-doped pure quartz rod closely arranged in a regular hexagon; all cladding cylinders have the same diameter, which is 1.64 μm, and the diameter of the outer core cylinder is is 0.51 μm, the diameter of the inner core cylinder is 1.6 μm, and the column spacing of all cylinders is equal to 2.1 μm; the total number of cladding layers is 6 layers, and there are three layers between the inner core and the outer core. There are three layers outside the outer core; as figure 2 Shown, the substrate material refractive index n 0 is 1.45, the refractive index...

Embodiment 2

[0037] The base material is pure quartz, the inner core cylinder is a germanium-doped pure quartz rod, the outer core cylinder is a layer of boron-doped pure quartz rods closely arranged according to a regular hexagon; the cladding cylinder is a regular hexagon closely arranged Arranged boron-doped pure silica rods; all cladding cylinders have the same diameter of 1.0 μm, the diameter of the outer core cylinder is 0.43 μm, and the diameter of the inner core cylinder is 2.0 μm, and the column spacing of all cylinders is equal. It is 1.8μm; the total number of cladding layers is 6 layers, there are three layers between the inner core and the outer core, and there are three layers outside the outer core; the refractive index of the base material is n 0 is 1.45, the refractive index n of the inner core cylinder 1 is 1.46, the outer core cylindrical refractive index n 2 is 1.44, the cladding cylinder refractive index n 3 is 1.425.

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Abstract

The invention provides an all-solid-state broadband dispersion compensation refractive index guide type microstructure fiber which comprises inner and outer fiber core cylinders, cladding cylinders and a base material. The base material is pure quartz, and the inner fiber core cylinder is a germanium doped pure quartz rod. The outer fiber core cylinders are a layer of pure quartz rods which are doped with fluorine or boron and in regular hexagon dense arrangement. The cladding cylinders are pure quartz rods which are doped with fluorine or boron and in regular hexagon dense arrangement. The refractive index of the inner fiber core cylinder is greater than the refractive index of the base material. The refractive index of the base material is greater than the refractive index of the outer fiber core cylinders. The refractive index of the outer fiber core cylinders is greater than the refractive index of the cladding cylinders. The diameter of the cladding cylinders is the same and greater than the diameter of the outer fiber core cylinders. The diameter of the inner fiber core cylinder is greater than the diameter of the outer fiber core cylinders. All cylinders are equally spaced. The microstructure fiber provided by the invention is easy to prepare, is easy to be coupled with traditional optical fibers, can carry out broadband dispersion compensation on cumulative dispersion in high-speed dense wavelength division multiplexing optical fiber communication transmission, and provides an effective transmission medium for an optical fiber communication system.

Description

technical field [0001] The invention belongs to the field of optical fiber technology, in particular to a microstructure optical fiber. Background technique [0002] In modern optical fiber communication systems, especially in high-speed dense wavelength division multiplexing optical fiber communication systems, the cumulative dispersion in the transmission process has become the main limitation of this type of system. Therefore, broadband dispersion compensation for high-speed dense wavelength division multiplexing optical fiber communication system has become a research hotspot. [0003] With the continuous understanding of the theoretical research and preparation technology of microstructure optical fiber (also known as photonic crystal fiber), it is found that the dispersion characteristics of the optical fiber can be greatly adjusted by adjusting the microstructure design of the optical fiber, such as the dispersion flat characteristic of the optical fiber, dispersion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/02G02B6/036
CPCG02B6/02323G02B6/03627
Inventor 王伟屈玉玮张春兰左玉婷王珺琪
Owner SHENZHEN SDG INFORMATION CO LTD