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High anti-damage energy transfer optical fiber and manufacturing method

An energy-transfer optical fiber and high-resistance technology, which is applied in the direction of cladding optical fiber, manufacturing tools, optical waveguides, etc., can solve the problems of low numerical aperture, high manufacturing cost, and low damage threshold of energy-transmitting optical fibers, and achieve simplification of the manufacturing process , low transmission loss and high damage threshold

Inactive Publication Date: 2010-10-06
CHINA ELECTRONICS TECH GRP NO 23 RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a high-damage-resistant energy-transfer optical fiber and its manufacturing method, which can solve the problems of low numerical

Method used

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  • High anti-damage energy transfer optical fiber and manufacturing method

Examples

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Embodiment 1

[0024] Embodiment 1: The periphery of the optical fiber pure silica core 1 is covered with a heat-cured low-refractive-index silicone rubber material cladding 2 , and a UV-cured acrylic resin protective layer 3 is covered on the cladding 2 . The diameter of the core 1 is 50 μm, and the refractive index range of the core 1 is 1.456; the diameter of the cladding 2 is 60 μm, and the refractive index of the cladding is 1.398; the diameter of the outer protective layer 3 is 125 μm; the outer The refractive index of the protective layer 3 is 1.410.

Embodiment 2

[0025] Embodiment 2: The periphery of the pure silica fiber core 1 of an optical fiber is covered with a low-refractive-index optical fiber coating resin material cladding 2 , and a heat-cured low-refractive-index silicone rubber protective layer 3 is covered on the cladding 2 . The diameter of the core 1 is 400 μm, and the refractive index range of the core 1 is 1.457; the diameter of the cladding 2 is 500 μm, and the refractive index of the cladding is 1.365; the diameter of the outer protective layer 3 is 580 μm; the outer The refractive index of the protective layer 3 is 1.380.

Embodiment 3

[0026] Embodiment 3: The periphery of the optical fiber pure silica core 1 is covered with a thermally cured low-refractive index polyimide material cladding 2 , and the thermally cured low-refractive polyimide protective layer 3 is covered on the cladding 2 . The diameter of the core 1 is 1000 μm, and the refractive index range of the core 1 is 1.458; the diameter of the cladding 2 is 1200 μm, and the refractive index of the cladding is 1.410; the diameter of the outer protective layer 3 is 1400 μm; the outer The refractive index of the protective layer 3 is 1.410.

[0027] The manufacturing process is as follows: the optical fiber pure silica core preform is directly made of a synthetic low-hydroxyl pure silica rod or tube; the low-hydroxyl pure silica rod or tube is melted at a high temperature of 2150°C in a graphite resistance furnace or a graphite induction furnace, and pulled under a certain tension The fiber core is made by stretching and drawing; the larger the core d...

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Abstract

The invention relates to energy transfer optical fibers. The technical problem to be solved is to provide a high anti-damage energy transfer optical fiber and a manufacturing method, which can solve the problems of low numerical aperture, high loss, low damage threshold value, high manufacturing cost and the like of the energy transfer optical fiber, and the manufactured optical fiber has high anti-damage capability and can transmit high-power laser. The invention is characterized in that the material of the optical fiber is pure quartz; the material of a cladding is a low-refractivity organic compound; and the material of an outer protection layer is a high-modulus organic compound. The pure quartz has theoretical maximum damage threshold value and low loss, and the cladding made of the low-refractivity material enables the optical fiber to have extremely high numerical aperture, so that the optical fiber has small transmission loss, high damage threshold value, strong bending-resistant performance and capability of transmitting the high-power laser. The high anti-damage energy transfer optical fiber is manufactured through drawing by directly utilizing a synthesized pure quartz pipe or bar as a fiber core, and an optical cladding is directly coated in the wire drawing process, so that the manufacturing process of the optical fiber is simplified, and the manufacturing cost is greatly lowered.

Description

Technical field: [0001] The invention relates to an energy-transfer optical fiber; in particular, it relates to a high-damage-resistant energy-transfer optical fiber and a manufacturing method thereof. Background technique: [0002] Energy transmission optical fiber is mainly used for optical energy transmission, which can transmit high-power laser to the required position, simplify the optical path system, and improve the application platform of laser system. It can be used in military, laser processing, medical treatment, lighting and many other fields. [0003] In the prior art, pure silica or fluorine-doped silica glass is used for the cladding of conventional energy-transmitting optical fibers, and the corresponding optical fiber core materials are pure silica and doped silica glass. Pure silica core, the numerical aperture of energy-transfer fiber core with fluorine-doped silica glass cladding is only about 0.2, the low numerical aperture makes the optical fiber focusi...

Claims

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Application Information

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IPC IPC(8): G02B6/02C03B20/00C03B37/025C03C25/50C03C25/34C03C25/12
Inventor 潘志勇黄剑平任军江何耀基顾劭忆
Owner CHINA ELECTRONICS TECH GRP NO 23 RES INST
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