Double-refraction microstructure optical fiber and its mfg. method
A microstructured fiber, birefringence technology, applied in cladding fiber, multi-layer core/cladding fiber, optical waveguide light guide, etc., can solve the problems of limitation, light wave can not propagate, etc., achieve low cost, good polarization temperature stability Sexual, quick-acting effects
Active Publication Date: 2006-12-20
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology
The period of change of the refractive index of the periodically arranged material is the order of the wavelength of light. There are medium defects in the periodically arranged medium. Due to the influence of PBG, there is a band gap effect on the wavelength of a certain band, so the light wave of this band cannot be in the Propagates in a periodically arranged medium, but is confined to propagation in defects
A core appears in the center of the periodic cladding, and defects are formed in the core so that light is confined to propagate in the core
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[0040] The structure of the birefringent microstructure optical fiber and the manufacturing method of the present invention will be explained in detail below with reference to the accompanying drawings.
[0041] figure 1 It is a schematic diagram of the cross-section of an optical fiber with an "H-shaped" microstructure. The optical fiber consists of an inner region 1 surrounding the core, and a cladding region 2 of a "H-shaped" structure with smaller diameter microholes. The micro-holes are arranged in a cladding area 3 of a hexagonal array structure, and an optical fiber coating area 4 composed of organic polymers is composed, and the micro-holes 8 in the cladding are approximately circular. The diameter of the micropores in the cladding region 2 is smaller than that in the cladding region 3, and the distribution along the axis perpendicular to the optical fiber presents an "H-shaped" distribution, so it is effective in the direction perpendicular to the optical fiber. The ...
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Abstract
The fiber includes central core area, cladding area and coating area. Cladding area includes buried micropore array in axial direction surrounding the core area and coating area. Changing shapes, structures, size and quantity and arrangement etc. forms major effective refractivity between two perpendicular directions in fiber so as to fabricate birefringence microstructure optical fiber. Fabricating method includes steps: preparing pure or doping quartz tiny stick and pure quartz tiny tube with certain wall thickness; fabricating the said sticks and tubes to specific shape; assembling the said sticks and tubes to desired shape; bundling sticks and tubes in quartz sleeve; fiber drawing forms optical fiber.
Description
technical field [0001] The invention relates to a microstructure optical fiber and a manufacturing method thereof, in particular to a microstructure optical fiber with birefringence properties and a manufacturing method thereof. Background technique [0002] Micro-structured fiber (MOF) refers to an optical fiber with a certain diameter and a certain number of micro-holes distributed in the cladding and / or core of the optical fiber, and the micro-holes are parallel to the central axis of the optical fiber and run through the entire optical fiber. When the arrangement of the regular micro-holes on the optical fiber cross-section has a two-dimensional periodic structure, and the third-dimensional direction (the axial direction of the optical fiber) is basically unchanged, the optical fiber cross-section refractive index presents a two-dimensional periodic structure, with this The novel structural fiber with this characteristic is also called photonic crystal fiber (Photonic Cr...
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IPC IPC(8): G02B6/036G02B6/02C03C25/00
Inventor 陈伟李进延李诗愈李海清蒋作文刘学军刘革胜
Owner FENGHUO COMM SCI & TECH CO LTD