Pohotonic crystal fiber having Dirac points in photonic band gap by employing quartz glass as matrix
A technology of photonic crystal fiber and Dirac point, which is applied in the field of optics and optical fiber, to achieve the effects of reducing raw material cost and process control difficulty, easy preparation, and long material properties
Active Publication Date: 2018-08-28
SOUTH CHINA UNIV OF TECH
View PDF9 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] The purpose of the present invention is to solve the problem that the existing Dirac-point photonic crystal fiber needs to use high-refractive index glass, and to provide a photonic crystal fiber with Dirac point in the photonic band gap using quartz glass as the matrix
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0034] A photonic crystal fiber with a Dirac point in the photonic band gap using quartz glass as the matrix, the schematic cross-section is shown in Figure 1a , the schematic diagram of the primary cell structure of the cladding see Figure 1b ; Among them, the core diameter of the optical fiber is 9.05 μm, the distance between adjacent small-diameter air holes in the cladding of the optical fiber is 2.75 μm, the diameter of the small-diameter air holes is 1.1 μm, and the diameter of the large-diameter air holes is 4.26 μm. Rate n=1.45;
[0035] The energy band diagram of the cladding structure of the optical fiber calculated by the plane wave expansion method is as follows: Figure 2a shown by Figure 2a It can be seen that in the energy band diagram of the cladding structure, a mature Dirac cone with a good linear dispersion relationship appears at the corner point K of the Brillouin zone; among them, the fourteenth and fifteenth energy bands The schematic diagram of six...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Diameter | aaaaa | aaaaa |
| Diameter | aaaaa | aaaaa |
| Diameter | aaaaa | aaaaa |
Login to View More
Abstract
The present invention provides a pohotonic crystal fiber having Dirac points in a photonic band gap by employing quartz glass as a matrix. The pohotonic crystal fiber comprises a fibre core and a cladding around the fibre core; the fibre core is a air-hole defect introduced by a cladding structure center; and the cladding is quartz glass with an improved honeycomb structure hole. In the pohotoniccrystal fiber, the improved honeycomb structure is employed to allow the cladding energy band structure to have Dirac points to form a pohotonic crystal fiber conduction Dirac mode and reduce the requirements of the Dirac point pohotonic crystal fiber for the matrix glass refractive index so as to take pure silica glass as matrix materials of the fiber, greatly reduce the original material cost and the process control difficulty of the fibre-optical drawing process and improve the application prospect of the Dirac mode fiber in an optical device.
Description
technical field [0001] The invention belongs to the field of optics and optical fiber technology, and in particular relates to a photonic crystal optical fiber with a Dirac point in the photonic band gap using quartz glass as a matrix. Background technique [0002] Hollow bandgap photonic crystal fibers have been developed rapidly due to their excellent optical properties such as low transmission loss, low nonlinearity and high transmission power, and have been widely used in optical fiber sensing, optical communication, gas nonlinear optics and laser transmission, etc. field. The traditional hollow-core bandgap photonic crystal fiber relies on the photonic bandgap to suppress the divergence of light, so that the light of the corresponding frequency is locally transmitted in the fiber core, and the electromagnetic field intensity of the corresponding mode decays exponentially with the distance, and the interaction between the modes is short-range. [0003] Photonic crystal ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G02B6/02
CPCG02B6/02328G02B6/02347
Inventor 杨中民杨力钱奇
Owner SOUTH CHINA UNIV OF TECH