A holey core photonic crystal fiber with nano-air holes for light transmission

A photonic crystal fiber, air hole technology, applied in cladding fiber, optical waveguide light guide, microstructure fiber, etc., can solve the problems of high loss, no light intensity distribution in the central air hole, and light intensity reduction, etc.
CN105511014BActive Publication Date: 2019-05-03东方光源集团有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
东方光源集团有限公司
Publication Date
2019-05-03

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Abstract

A porous core photonic crystal optical fiber for transmitting light through nanometer air holes is composed of the fiber core air holes, the wrapping layer air holes and a base material. At least one fiber core air hole is machined in the center of the base material to form a fiber core part. The wrapping layer air holes are machined in the portion, around the fiber core part, of the base material to form a wrapping layer part. The wrapping layer air holes are machined according to a regular hexagonal multi-layer dense array structure, and the hole distances of the wrapping layer air holes are equal. The aperture of the wrapping layer air holes is larger than that of the fiber core air holes. The air filling rate of the fiber core part is smaller than that of a wrapping layer. The equivalent refractive index of the fiber core part is larger than that of the wrapping layer. The optical fiber has the advantages of low loss and wideband transmission, and the air holes have coherence and can be coupled with one another when light is tansmitted.
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Description

technical field

[0001] The invention relates to the technical field of hollow-core photonic crystal fibers, in particular to a porous-core photonic crystal fiber with nanometer air holes for light transmission. Background technique

[0002] In traditional optical waveguides based on the principle of total internal reflection, it is impossible for light to travel long distances in low refractive index materials such as air. Although light transmission in low-refractive-index media can be achieved through the reflection of multi-layer media or photonic crystals, this structural fiber can only transmit specific wavelengths, and the large mode field area will lead to weakened light intensity.

[0003] The emergence of photonic crystal fiber has injected new vitality into the research in the field of optics. It is a new type of optical fiber developed based on photonic crystal technology. The fiber core has a defect that destroys the periodicity of the cladding. This defect is u...

Claims

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