Novel pohotonic crystal fiber

A photonic crystal fiber, a new type of technology, applied in the direction of cladding fiber, optical waveguide light guide, etc., to achieve high nonlinear effect

Inactive Publication Date: 2014-07-09
HEFEI UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide a photonic crystal fiber with high birefringence, high nonlinearity

Method used

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Embodiment Construction

[0024] A new type of photonic crystal fiber, the main body of which is an air hole 1 arranged in an equilateral triangle, the background material 2 is pure silica glass, and the outside is wrapped with a perfect matching layer 3 with the same refractive index as the background material, and the innermost ring of air holes is covered by a semi-ellipse 4 and the elliptical air hole 5, wherein the left and right two symmetrical air holes are replaced by the semi-elliptical air hole 4 separated by the short axis, and the remaining four air holes are replaced by the elliptical air hole 5, and the geometric center of the elliptical air hole 5 is In addition to the center of the original air hole, the long axis of the elliptical air hole 5 is perpendicular to the long axis of the semi-elliptical air hole 4 . In the above structure, (1) the diameter of the circular air hole 1 is d , the distance between adjacent air holes is Λ ; (2) The major axes of the two semi-elliptical air hole...

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Abstract

The invention discloses a novel pohotonic crystal fiber. Air holes arranged in the shape of a regular triangle are formed in a body of the novel pohotonic crystal fiber, pure quartz glass serves as a background material, and the novel pohotonic crystal fiber is wrapped with a perfect matching layer the same as the background material in refractive index. The novel pohotonic crystal fiber is characterized in that the air holes in the innermost ring are replaced by oval and semioval air holes, two air holes in bilateral symmetry are replaced by the semioval air holes separated by a short axis, the other four air holes are replaced by the oval air holes, the geometric center of the oval air holes is the center of a circle of original air holes, and besides, a long axis of the oval air holes is perpendicular to a long axis of the semioval air holes. The novel pohotonic crystal fiber having high nonlinearity, high birefringence and zero dispersion will play an important role in the aspects of optical soliton communication, optical fiber devices, optical fiber sensing, high-speed optical networks, super-continuum spectrum transmission and the like.

Description

technical field [0001] The invention relates to the field of photonic crystal fibers, in particular to a photonic crystal fiber with high birefringence, high nonlinearity and multiple zero-dispersion wavelengths. Background technique [0002] Photonic crystal fiber (PCF), also known as microstructured fiber or holey fiber, has the characteristics of infinite single-mode transmission, high birefringence, high nonlinearity, and dispersion management compared with ordinary optical fiber, and is widely used in optical fiber Sensing, optical communication and nonlinear optics and other fields. [0003] High birefringence PCF has important application value in high-performance fiber lasers and laser sensing, so it has become one of the research hotspots in the field of PCF. The dominant structure of PCF is a six-fold symmetric structure composed of parallelogram lattices. The fundamental mode of the photonic crystal fiber under this structure is degenerate, so breaking the symmet...

Claims

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Application Information

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IPC IPC(8): G02B6/02
Inventor 姜海明王二垒谢康
Owner HEFEI UNIV OF TECH
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