Micro-structured optical fiber for generating and transmitting vortex light beams

A technology of micro-structured optical fiber and vortex beam, applied in the direction of multi-layer core/clad optical fiber, clad optical fiber, etc., can solve problems such as difficult matching, and achieve the effects of reducing manufacturing cost, reducing process difficulty, and periodic control

Active Publication Date: 2014-09-24
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is difficult to match for inorganic optical materials with different refractive indices, or polymer optical materials

Method used

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  • Micro-structured optical fiber for generating and transmitting vortex light beams
  • Micro-structured optical fiber for generating and transmitting vortex light beams

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The principle on which the technical solution provided by the invention is:

[0020] By adopting COP as the structural material of the vortex fiber, the design requirements of high-purity separation of different vortex beams are achieved with the subwavelength porous fiber structure; the design of the subwavelength porous core reduces material loss, and the macroporous cladding structure , to achieve the design requirements of adjusting the refractive index and reducing the loss, increasing the flexibility of the optical fiber. On this basis, high-quality (no impurities, no bubbles), large-size (7 cm diameter, 50 cm length) vortex optical fiber preform with square core and ring core, and vortex optical fiber prefabricated with round core and ring core are prepared. Rods; master the optimal process conditions for thermoforming preforms with two different structures; prepare two high-quality preforms with the best technology; use the preforms to pull out vortex optical fi...

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Abstract

The invention provides a brand-new structure. By means of the brand-new structure, the micro-structured optical fiber for generating and transmitting vortex light beams does not need to be made into a circular lantern ring through as many as four kinds of materials with different refractive indexes, and the manufacturing cost and process difficulty of the optical fiber are reduced; meanwhile, the micro-structured optical fiber for generating and transmitting the vortex light beams is invariant in reflecting index outline in the long-term use process, and the degree of order and periodicity are controlled effectively. The micro-structured optical fiber for generating and transmitting the vortex light beams is provided with an inner fiber core, an inner cladding, an annular outer core and an outer cladding from inside to outside in sequence. A plurality of micro holes are evenly distributed in the inner fiber core, the inner cladding and the outer cladding. The reflecting index of each layer should meet the range of 1.510+/-20.

Description

technical field [0001] The invention relates to a vortex optical fiber, in particular to a microstructure optical fiber for generating and transmitting a vortex beam. The optical fiber can meet the high-quality transmission requirements of the vortex beam and the conversion requirement of converting a Gaussian beam into a vortex beam. Background technique [0002] The emergence of high-definition televisions, terabyte-level storage devices, megapixel digital cameras, large-capacity smart phones, and portable multimedia players indicates that the era of super-big data has arrived. This poses a challenge to the existing information transmission technology: higher transmission rate, larger transmission capacity, and lower transmission cost. With the increasing amount of network information transmission, optical fiber network communication technology develops rapidly. In order to improve the capacity and speed of information transmission, new solutions are constantly introduced,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/036
Inventor 王丽莉孔德鹏苗竟
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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