Ionic solution doping method for preparing active optical fiber and device of method
An ionic solution and optical fiber technology, which is applied in the field of an ionic solution doping method for preparing active optical fibers and devices thereof, can solve the problems of poor beam quality of fiber lasers, uneven solution concentration, etc., so as to meet application requirements, improve beam quality, The effect of reducing fiber loss
Inactive Publication Date: 2020-01-10
CHINA ELECTRONICS TECH GRP NO 46 RES INST
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Problems solved by technology
[0005] Aiming at the disadvantages of the traditional method that the concentration of the solution caused by ion solution soaking and injection is not uniform, which further affects the beam quality of the fiber laser, the present invention provides an ion solution doping method and device for preparing an active optical fiber
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[0025] The present invention will be further described below in conjunction with accompanying drawing and embodiment:
[0026] refer to figure 1 , this embodiment takes the manufacturing process of the relatively common ytterbium-doped optical fiber preform as an example for illustration, and the steps are as follows:
[0027] (1) A quartz tube is used as the reaction tube 6 for deposition, and an isolation layer is deposited on the inner wall of the reaction tube 6 to prevent impurity ions in the reaction tube 6 from entering the core layer.
[0028] (2) Deposit the loose layer on the reaction tube 6 deposited with the isolation layer to obtain the reaction tube 6 to be doped and connected with the support tube. The loose layer is an unsintered, opaque, porous deposition layer, Used to adsorb solute ions in solution. The soot layer is in the reaction tube 6, and due to the known process, after the deposition process, an integral quartz reaction tube in which the support tub...
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The invention discloses an ionic solution doping method for preparing active optical fiber and a device of the method. A quartz reaction tube with a loose layer deposited on the inner wall is fixed tothe device in a vertical manner, and ionic solution is sprayed into the quartz reaction tube for many times through up and down reciprocating motion of the device. The device adopts a hard hollow plastic pipe as an injection channel of the solution, one end of the hollow plastic pipe is connected with a solution storage, the other end of the hollow plastic pipe is connected with a sprayer, the method adopts an angle-adjustable and reciprocally movable spray injection mode to dope the ionic solution with the active optical fiber, because the sprayer enters the reaction tube for spraying, solution concentration of being in contact with each point of the reaction tube is the same, the problem of concentration of the ionic solution is not uniform when soaking a prefabricated rod by a traditional method is solved, the qualification rate of the fiber is further improved, thus the fiber loss is reduced, and the beam quality of a fiber laser is improved.
Description
technical field [0001] The invention relates to an optical fiber prefabricated bar preparation technology, in particular to an ion solution doping method and a device for preparing an active optical fiber. Background technique [0002] With the development of laser technology, lasers are more and more widely used in military and civil affairs. At the same time, the requirements for lasers are getting higher and higher. High quality, high power and high efficiency are important criteria for judging the quality of lasers. In recent years, fiber lasers doped with rare earth ions have gradually attracted everyone's attention because of their advantages such as good beam quality, small size, fast speed, and long working life. And it has been widely used in the field of laser welding, medical field, laser communication and many other fields. [0003] The core part of the fiber laser is the fiber doped with rare earth ions, and the doping process of doped rare earth ions is divide...
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Login to View More IPC IPC(8): C03B37/018
CPCC03B37/018
Inventor 潘蓉庞璐王标衣永青沈一泽武洋
Owner CHINA ELECTRONICS TECH GRP NO 46 RES INST