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Air hole crystal lattice composite core broadband terahertz photonic crystal fiber

A technology of photonic crystal fiber and air hole, which is applied in the direction of cladding fiber, optical waveguide, light guide, etc., can solve the problem of narrow transmission bandwidth of terahertz waves, and achieve the effects of reducing overall loss, good binding effect, and small absorption

Inactive Publication Date: 2015-04-22
TIANJIN UNIV
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  • Abstract
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Problems solved by technology

[0008] The invention provides an air-hole lattice composite core broadband terahertz photonic crystal fiber. The invention changes the transmission bandwidth and dispersion of the fiber by adjusting the size of the air holes and hole spacing in the cladding and the fiber core, the refractive index of the material, etc. etc., solved the problem of narrow transmission bandwidth of terahertz wave in the existing terahertz photonic crystal fiber based on photonic bandgap effect, see the description below for details:

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[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the implementation manners of the present invention will be further described in detail below.

[0028] An air hole lattice composite core broadband terahertz photonic crystal fiber, see figure 1 , the broadband terahertz photonic crystal fiber includes: a main body 1, a background material 2, a core 3 and a cladding 4. A background material 2 , a fiber core 3 and a cladding 4 are distributed on the main body 1 .

[0029] Wherein, the fiber core 3 is located in the middle of the main body 1 and evenly distributed on the background material 2 .

[0030] The main body 1 is a Kagome lattice structure composed of air holes; the background material 2 can be a variety of organic materials; the core 3 is composed of 19 core air holes arranged in a triangular lattice; Kagome lattice structure composed of holes.

[0031] In the broadband terahertz photonic crystal fiber, the refr...

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Abstract

The invention discloses an air hole crystal lattice composite core broadband terahertz photonic crystal fiber. The air hole crystal lattice composite core broadband terahertz photonic crystal fiber comprises a body, a background material, fiber cores and a coating. The background material, the fiber cores and the coating are distributed on the body, the fiber cores are located in the middle of the body and evenly distributed on the background material, the body is of a Kagome crystal lattice structure formed by air holes, the coating is of a Kagome crystal lattice structure formed by air holes, and the refraction rate of the fiber cores is lower than that of the coating. By the adoption of the terahertz photonic crystal fiber with the Kagome air hole crystal lattice composite core broadband transmission function, the problems existing in the transmission bandwidth of a terahertz waveguide can be solved, and the fiber can be widely applied to the aspects such as terahertz spectroscopy, terahertz imaging and terahertz coherent chromatography.

Description

technical field [0001] The invention belongs to the field of terahertz photonic crystal fibers, and in particular relates to an air hole lattice composite core broadband terahertz photonic crystal fiber. Background technique [0002] Terahertz waves (THz, 1THz=1012Hz) usually refer to electromagnetic waves in the range of 0.1THz to 10THz. Electromagnetic waves in this range have unique advantages: the cosmic background radiation and the vibration and rotation energy levels of many organic molecules are located in the terahertz band, so the terahertz wave Hertzian waves have good application prospects in imaging, non-destructive testing, security inspection, physical and chemical analysis and other fields [1-3]. Before the 1980s, people had limited understanding of the terahertz band due to the lack of effective means of generating and detecting terahertz waves. In recent years, with the development of semiconductor processing and preparation technology and ultrashort pulse ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02
CPCG02B6/02314
Inventor 栗岩锋范锦涛胡明列柴路王清月
Owner TIANJIN UNIV
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