Hollow-core microstructure fiber with high damage threshold

A technology of micro-structured optical fiber and high damage threshold, which is applied in the direction of multi-layer core/clad optical fiber, clad optical fiber, light guide, etc., can solve the problem of lack of flexible transmission medium for high-power and high-energy laser pulses, and achieve improved damage threshold Effect

Inactive Publication Date: 2017-06-09
CHINA ELECTRONICS TECH GRP NO 46 RES INST
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Problems solved by technology

[0005] The object of the present invention is to provide a high damage threshold hollow-core microstructure fiber capable of transmitting high-energy and high-power pulsed lasers, so as to solve the problem of lack of flexible transmission medium for high-power and high-energy laser pulses

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  • Hollow-core microstructure fiber with high damage threshold

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Embodiment Construction

[0009] The present invention will be described in further detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0010] Such as figure 1 As shown, a high damage threshold hollow core microstructured optical fiber includes an outer cladding quartz glass tube 1 and a quartz microcapillary tube 2 .

[0011] Along the inner wall of the outer cladding quartz glass tube 1, there are 11 to 15 quartz microcapillaries 2 arranged in gaps to form the inner cladding, and the contact parts between the 11 to 15 quartz microcapillaries 2 and the inner wall of the quartz glass tube 1 are welded. Fixed on the inner wall of the quartz glass tube 1, the middle part of 11 to 15 quartz microcapillaries 2, that is, the innermost layer is the low-refractive index core 3 area, and the low-refractive index core 3 area is inert gas or air or va...

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Abstract

The invention relates to a hollow-core microstructure fiber with high damage threshold, which can transmit high-energy and high-power pulse laser. An inner cladding composed of 11 to 15 quartz micro capillaries arranged at intervals is arranged around the inner wall of a quartz glass tube of an outer cladding; the parts of the 11 to 15 quartz micro capillaries, in contact with the inner wall of the quartz glass tube, are fixed on the inner wall of the quartz glass tube in a welding manner; the middle parts of the 11 to 15 quartz micro capillaries, namely the innermost layers, are a fiber core area with low refractive index; and the fiber core area with low refractive index is filled with inert gas or air or vacuum. The hollow-core microstructure fiber has the beneficial effects that the inner cladding is composed of 11 to 15 mutually separated quartz micro capillaries, namely hollow-core microstructure fibers; and light is transmitted in a hollow-core fiber core by using an anti-resonance guide principle in the structure, so that most of the transmitted light energy exists in the fiber core with low refractive index, the damage threshold of the fiber is improved, and the foundation is laid for laser transmission with high energy and high power.

Description

technical field [0001] The invention belongs to the field of microstructured optical fibers, in particular to a high damage threshold hollow core microstructured optical fiber capable of transmitting high-energy and high-power pulse lasers. Background technique [0002] In recent years, high-power and high-energy pulsed laser technology has developed rapidly in the ultraviolet, visible, near-infrared, and mid-infrared light bands, and has been gradually used in manufacturing, processing, medical treatment, and military affairs. In the application of high-power and high-energy pulsed lasers, if the laser is equipped with a flexible transmission fiber, the application of pulsed lasers will be more flexible than direct output of space pulsed lasers, which can greatly expand the application range of high-power and high-energy pulsed lasers . [0003] However, the general solid silica material (or soft glass material) optical fiber has a low damage threshold against high-power a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02G02B6/032G02B6/036
CPCG02B6/02342G02B6/032G02B6/03605
Inventor 张慧佳庞璐韩志辉潘蓉梁小红宁鼎衣永青王东波高亚明
Owner CHINA ELECTRONICS TECH GRP NO 46 RES INST
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