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Photonic crystal fiber structure with ultrahigh negative dispersion coefficient

A technology of photonic crystal fiber and negative dispersion, which is applied in cladding fiber, microstructure fiber, optical waveguide and light guide, etc., and achieves considerable economic value

Active Publication Date: 2016-01-20
CHANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The invention solves the problem of optical fiber dispersion compensation

Method used

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  • Photonic crystal fiber structure with ultrahigh negative dispersion coefficient
  • Photonic crystal fiber structure with ultrahigh negative dispersion coefficient
  • Photonic crystal fiber structure with ultrahigh negative dispersion coefficient

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Experimental program
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Embodiment Construction

[0015] exist figure 1 and figure 2 In , there is no air hole (2) in the center of the designed microstructure optical fiber, and the air holes (2) are distributed in a circle, wherein the first layer of air holes (4) are represented by 11, 12, 13,..., respectively; the second layer of air holes (5) are respectively represented by 21,22,23,...; the third layer of air holes (6) are respectively represented by 31,32,33,...; the fourth layer of air holes (7) are respectively represented by 41,42,43 ,..., represent; the fifth layer of air holes (8) are represented by 51,52,53,..., respectively; the sixth layer of air holes (9) are represented by 61,62,63,..., respectively.

[0016] A successful example is that the angle formed by the centers of 11 and 12 air holes of the first layer of air holes (4) and the center of the optical fiber (3) is 60°, so the first layer of air holes (4) has 6 air holes , the air holes are symmetrically rotated by 60°; the angle between the centers of...

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Abstract

Provided is a photonic crystal fiber structure with an ultrahigh negative dispersion coefficient. Fiber column symmetry is used as the design principle of air hole arrangement. A center is an air hole defect. An outer ring uses the center as an axis. Air holes are arranged in a rotationally symmetrically. The air holes in the first layer of the outer ring are symmetric in a 60-degree rotary manner. The air holes in the second layer of the outer ring are symmetric in a 30-degree rotary manner. The air holes in the third layer of the outer ring are symmetric in a 18-degree rotary manner. The air holes in the fourth layer of the outer ring are symmetric in a 12-degree rotary manner. The air holes in the fifth layer of the outer ring are symmetric in a 10-degree rotary manner. The air holes in the sixth layer of the outer ring are symmetric in a 9-degree rotary manner. The air holes in all the layers have equal diameters. The distance between any two adjacent layers is the same. By means of COMSOL Multiphysics simulating calculation, a maximum negative dispersion coefficient -65207ps / (nm.km) can be obtained and the chromatic dispersion generated by a G.652 fiber can be effectively compensated when the distance between any two adjacent air hole layers is 1.50 [mu]m, each air hole has a diameter of 1.14[mu]m, and a transmission wavelength is 1.55 [mu]m.

Description

technical field [0001] The invention belongs to a kind of microstructure optical fiber, in which air holes are regularly arranged in the fiber core. Background technique [0002] Since Dr. Gao Kun predicted in 1964 that one optical fiber could transmit 200,000 telephones, the development and application of optical fiber technology has gone through five important stages. Optical fiber communication has now become the mainstream of communication. However, with the continuous improvement of people's living standards Improvement, the increasing information traffic, forcing the wavelength division multiplexing technology to develop in the direction of intensive wavelength division multiplexing, but attenuation and dispersion seriously affect the intensive wavelength division multiplexing. The discovery of three low-loss windows, especially the application of erbium-doped fiber amplifier technology, has greatly reduced the attenuation loss in the fiber, so the dispersion has becom...

Claims

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Application Information

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IPC IPC(8): G02B6/02
CPCG02B6/02261G02B6/02295G02B6/02314
Inventor 江兴方孔祥敏江鸿
Owner CHANGZHOU UNIV
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