Metal wire filled near-diamond big air hole inner cladding polarized photon crystal fiber

A technology of photonic crystal fiber and large air hole, which is applied in the direction of polarization fiber, cladding fiber, light guide, etc., and can solve the problems of not being able to realize the beam splitting and filtering effect well.

Inactive Publication Date: 2012-10-17
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in practice, this kind of metal-filled photonic crystal fiber based on the ordinary hexagonal symmetric structure cannot well realize the beam splitting and filtering effect of completely separating the two orthogonal polarization directions.

Method used

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  • Metal wire filled near-diamond big air hole inner cladding polarized photon crystal fiber
  • Metal wire filled near-diamond big air hole inner cladding polarized photon crystal fiber
  • Metal wire filled near-diamond big air hole inner cladding polarized photon crystal fiber

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Effect test

Embodiment 1

[0015] Such as figure 1 As shown, a metal wire fills the inner cladding polarization photonic crystal fiber with nearly diamond-shaped large air holes, which is composed of a core 1, a background material 2, large air holes 3 and 4 in the cladding, small air holes 5 and filling wire 6 , the background material 2 is a quartz material, and its cladding air holes are evenly distributed on each node of the triangular array. The core area is formed by the absence of the central air hole, and the air holes of different sizes in the two orthogonal polarization directions form the high birefringence region of the fiber: Two larger air holes 4 diameters in the innermost layer along a certain polarization direction (x) D 5 diameters of 2.6 microns, eight small air holes in the innermost and third layers along the polarization direction orthogonal to it (y) d s 1 micron, other air holes 3 diameter d 1.9 microns, the hole spacing between two adjacent air holes Λ 2.4 microns, the air ...

Embodiment 2

[0018] Such as Figure 4 Shown, a kind of metal wire fills the cladding polarized photonic crystal fiber in the nearly diamond-shaped big air hole, and it is by fiber core 1 ', background material 2 ', cladding big air hole 3 ', 4 ', small air hole 5 ' and It is composed of filling wire 6', the background material 2' is quartz material, and the cladding air holes are evenly distributed on each node of the triangular array, the central air hole is absent to form the core area, and the air holes of different sizes in the two orthogonal polarization directions Form the high birefringence region of the fiber: two larger air holes 4' diameter in the innermost layer along a certain polarization direction (x') D′ 2.6 microns, eight small air holes 5' in diameter along the polarization direction orthogonal to it (y') in the innermost and third layers d s ′ to 1 micron. The diameter of other air holes 3' of the optical fiber d′ 1.9 microns, the hole spacing between two adjacent ai...

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Abstract

The invention discloses a metal wire filled near-diamond big air hole inner cladding polarized photon crystal fiber, which has the key point of the technical scheme that the metal wire filled near-diamond big air hole inner cladding polarized photon crystal fiber consists of a fiber core 1, a background material 2, big cladding air holes 3 and 4, small air holes 5 and filling metal wires 6, wherein the big cladding air holes are evenly distributed in a regular triangle array; the center air hole is missing to form a core area; the air holes of different sides on two orthogonal-polarization directions form a fiber high double-refraction area; one or two metal wires are selectively filled in a second layer of air holes; and the background material of the fiber is quartz material. The metal wire filled near-diamond big air hole inner cladding polarized photon crystal fiber disclosed by the invention is used in a fiber system, and a polarized beam splitting filtering function at different wavelength points can be realized. The filtering effect on different wavelength positions can be realized by properly selecting the size of the filled metal wires. A fiber filter is easy in integrating with the fiber system so as to adapt to the miniaturization and integration development of the optical system.

Description

technical field [0001] The present invention relates to a photonic crystal fiber structure, in particular to a metal wire-filled near-rhombic large air hole inner-clad polarized photonic crystal fiber, which is a gold-filled high-birefringence photonic crystal fiber with polarization beam splitting and filtering functions, and can be used in a specific It achieves good polarization beam splitting filtering function at the wavelength, and is suitable for polarization filter devices based on optical fibers. Background technique [0002] With the continuous development of science and technology, the trend of miniaturization and integration of optical devices is becoming more and more obvious. Photonic crystal fibers are favored by people in the application of optical fibers and their devices because of their unique advantages of flexibility and controllability. Quartz photonic crystal fibers made of a single material have been difficult to meet the functional requirements of a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/024G02B6/032
Inventor 李曙光杜颖
Owner YANSHAN UNIV
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