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Polarized non-sensitive type double core photon crystal optical fiber

A photonic crystal fiber, polarization-insensitive technology, applied in cladding fiber, optical waveguide light guide, etc., to achieve the effect of small refractive index difference, good ability to confine light, easy cutting and connection

Inactive Publication Date: 2007-04-11
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This design not only retains the advantages of flexible and compact structure of dual-core photonic crystal fiber, but also solves the disadvantage that ordinary photonic crystal fiber can only realize multiplexing and demultiplexing of single polarized light

Method used

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  • Polarized non-sensitive type double core photon crystal optical fiber
  • Polarized non-sensitive type double core photon crystal optical fiber
  • Polarized non-sensitive type double core photon crystal optical fiber

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Embodiment Construction

[0019] Preferred embodiments of the dual-core photonic crystal fiber of the present invention will be described below with reference to the accompanying drawings.

[0020] The host material of the photonic crystal fiber in this embodiment 1 is pure silica. Dielectric rod 2 and dielectric rod 3 are composed of fluorine-doped quartz, the centers of which are located on the nodes of the regular triangular mesh (see Fig. 1). The diameters of the dielectric rods 2 and 3 are both 2.32 μm, and the distance between the centers of two adjacent dielectric rods 2 is 6.25 μm. The refractive index values ​​of the dielectric rod 2 and the dielectric rod 3 are both 99% of the matrix material 1 . This embodiment is aimed at the wavelength division multiplexing of light with wavelengths of 1.31 and 1.55 μm, and the multiplexing of light with other wavelengths is similar.

[0021] It can be seen from FIG. 2 that for the wavelength range of interest, the coupling length percentages are all les...

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Abstract

The invention relates to polarized-insensitive twin-core photonic crystal fiber. There are medium rods with a low refractive index filled in the holes of the optical fiber, and the optical fiber consists of matrix-materials, the medium rods located in the center of the fiber and medium rods located on the regular mesh nodes. The media core region of the fiber is formed of matrix-materials surrounded by the medium rods, and it is located at the sides of the medium rod in geometric center of the fiber.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to a polarization-insensitive double-core photonic crystal fiber with wavelength division multiplexing and demultiplexing functions. Background technique [0002] Photonic Crystal Fiber (PCF for short) (Science, 229, 358-362, 2003), also known as microstructure fiber or holey fiber, is a new type of fiber that has attracted widespread attention in recent years. A typical photonic crystal fiber is composed of pure silica and a certain number of air holes distributed in it. These air holes are arranged along the fiber axis and run through the entire fiber. [0003] The dual-core optical fiber is an optical device that uses the coupling effect of the optical evanescent field between the two cores to realize multiple selection functions such as optical power, wavelength, and polarization state. [0004] People have proposed dual-core photonic crystal fiber very early. This ki...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02
Inventor 陈明阳
Owner JIANGSU UNIV
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