Welding method for high-strength hollow-core photonic crystal fiber

A hollow-core photonic crystal and optical fiber fusion splicing technology, applied in the directions of light guides, optics, optical components, etc., can solve the problems of increased fusion splicing loss, inability to guarantee reliability, and structural damage of hollow-core optical fibers, so as to improve fusion strength and avoid fusion loss. , the effect of reducing the degree of structural damage

Active Publication Date: 2016-12-21
BEIHANG UNIV
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Problems solved by technology

In the case of not destroying the structural integrity, the fusion strength of the hollow-core fiber and the single-mode fiber is only a dozen kpsi (about 0.5N force can break the melting point), and the reliability in the application process cannot be guaranteed at

Method used

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  • Welding method for high-strength hollow-core photonic crystal fiber
  • Welding method for high-strength hollow-core photonic crystal fiber
  • Welding method for high-strength hollow-core photonic crystal fiber

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[0018] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0019] The invention provides a low-loss, high-strength hollow-core photonic crystal fiber fusion splicing method. In the traditional quartz optical fiber fusion splicing process, the fusion nozzle is heated by electric discharge to melt the end faces of the two optical fibers to be spliced, and then the two optical fibers are pushed toward each other to contact and fuse to complete the splicing process. In the traditional welding process, the parameters that affect welding quality are welding power and welding time. At present, the fusion splicing of hollow-core optical fiber and quartz optical fiber is no different from the traditional fusion splicing process, but simply adjust the splicing power and splicing time to obtain the ideal splicing loss and splicing strength. This is the currently accepted method for fusion splicing of hollow-core optical fibers. ...

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Abstract

The invention discloses a welding method for a high-strength hollow-core photonic crystal fiber. The method comprises: a welding fire head is discharged and heated, so that end surfaces of a hollow-core photonic crystal fiber and a traditional single-mode fiber are fused; two segments of fibers are pushed in an opposite direction to realize contact and fusion, wherein the center of the welding fire head is located at the fusing point; the power supply of the welding fire head is cut off, the fusing point position is kept to be unchanged, and the welding fire head moves towards the traditional single-mode fiber, so that the center of the welding fire head moves away from the end surface of the hollow-core photonic crystal fiber; and then the welding fire head is electrified and secondary heating reinforcement is carried out on the fusing point. Therefore, the welding strength of the hollow-core fiber and the single-mode fire is improved obviously; and reliability of the hollow-core fiber application process is enhanced.

Description

technical field [0001] The invention relates to a high-strength hollow-core photonic crystal optical fiber welding method, which belongs to the technical field of optical fiber gyroscopes. Background technique [0002] Hollow-core photonic crystal fiber (hereinafter referred to as "hollow-core fiber") is a new type of optical fiber. The inside of the fiber cladding is composed of air holes regularly arranged along the fiber axis, and several air holes are synthesized into a large Air holes, through the band gap effect, confine light to transmit inside the large air holes. The sensitive ring made of this new type of optical fiber instead of the traditional quartz optical fiber is used as the sensitive element of the fiber optic gyroscope, which can effectively suppress the Kerr effect, Shupe effect and Farady effect of the fiber optic gyroscope, and is the future development direction of the fiber optic gyroscope. [0003] In the research process of the hollow-core fiber opt...

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Application Information

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IPC IPC(8): G02B6/255
CPCG02B6/2551G02B6/2558
Inventor 宋凝芳宋镜明吴春晓邵洪峰张祖琛张春熹
Owner BEIHANG UNIV
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