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metal-containing optical fiber structure

An optical fiber structure and metal technology, applied in the directions of multi-layer core/cladding optical fibers, cladding optical fibers, light guides, etc., can solve the problems of photonic crystal fibers that are not easy to bend, complex manufacturing process, and high cost, and improve the self-focusing threshold power. , Improve the magnification ability, reduce the effect of light damage

Active Publication Date: 2017-11-17
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

In recent years, photonic crystal fibers (such as figure 2 , the picture on the left is a solid photonic crystal fiber, and the picture on the right is a hollow photonic crystal fiber) The large mode field area is used to improve the damage threshold of the fiber, but the photonic crystal fiber is not easy to bend, the cost is high, and the manufacturing process is relatively complicated

Method used

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Embodiment Construction

[0012] The present invention proposes a new type of optical fiber structure, in which a metal core is embedded in the fiber core of the optical fiber, located in the center or eccentrically (such as image 3 and Figure 4 shown). The structure is applicable to ordinary optical fiber, double-clad optical fiber, photonic crystal optical fiber, both solid and hollow optical fibers. The metal core makes the loss increase when the light beam in the fiber converges to the central optical axis, which destroys the conditions for self-focusing, so it can avoid the self-focusing phenomenon caused by the transmission of high-power light beams in the fiber, thereby avoiding damage to the fiber.

[0013] Optical fibers are generally made of glass, quartz, plastic or composite materials. structured as figure 1 shown. The typical structure of optical fiber is a kind of elongated multi-layer coaxial cylindrical solid composite fiber. From inside to outside: core (core layer)-→cladding la...

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Abstract

The invention relates to a fiber structure containing metal. A metal core is embedded into a fiber core of a fiber in the center and embedded away from the center. The structure is applicable to common fibers, double-clad fibers, photonic crystal fibers, solid fibers and hollow fibers. The self-focusing threshold power of a gain fiber can be increased, optical damage to materials is minimized, and the amplification capability of a single-fiber laser system is improved.

Description

technical field [0001] The invention belongs to the field of optical fiber technology, and in particular relates to an optical fiber structure capable of avoiding the self-focusing phenomenon caused by the transmission of high-power light beams in the optical fiber. Background technique [0002] With the development of laser application technology, laser beams with high power, high quality and high brightness are required in many fields such as laser weapons, material processing, space optical communication, remote sensing, lidar and photoelectric countermeasures. For high-energy and high-power laser transmission, the requirements for the transmission threshold strength of the optical fiber are getting higher and higher. [0003] Optical fiber is a kind of light transmission tool that can transmit light on the fiber made of glass or plastic reflection material by the principle of total reflection. In the rare earth doped laser gain fiber medium, when the laser intensity exc...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/02G02B6/036
CPCG02B6/02G02B6/02314G02B6/02328G02B6/036
Inventor 林学春杨盈莹王丽荣赵亚平汪楠刘燕楠
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI