High-power fiber grating laser annealing system and method
A fiber grating and laser annealing technology, which is applied in clad optical fiber, optical waveguide, optical, etc., can solve the problem that the annealing length cannot be changed flexibly, so as to improve product reliability, production yield, large operability space, The effect of saving production cost
Active Publication Date: 2022-05-20
江苏睿赛光电科技有限公司
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Problems solved by technology
[0008]Aiming at the problem that conventional external thermal radiation annealing is easy to damage the fiber grating, and the annealing length cannot be flexibly changed, a high-power fiber grating laser annealing system and method are proposed
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[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.
[0029] like figure 1 The structure schematic diagram of Embodiment 1 of the high-power fiber Bragg grating laser annealing system is shown. The system includes: a reference platform 1 , a laser 2 , a scanning reflection system 3 , a laser focusing system 4 , and a fiber Bragg grating clamping system 5 . Wherein the scanning reflection system 3 comprises a linear translation stage 301 and a laser mirror 302 placed on the linear translation platform 301; the laser focusing system 4 comprises a first five-axis translation platform 401 and a cylindrical lens placed on the first five-axis ...
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The invention relates to a high-power fiber bragg grating laser annealing system and method, laser annealing adopts a point-by-point scanning mode to perform laser heating annealing, and a large amount of outward heat radiation is not generated, so that damage to ring tangency points near a fiber bragg grating inscribing area is avoided, the product reliability is improved, and the good fiber bragg grating production rate is increased; laser scanning annealing can be flexibly adjusted according to the inscribing length of the fiber bragg grating, extra customization cost caused by different types of fiber bragg gratings is avoided, and the production cost of the fiber bragg grating is saved; laser annealing belongs to an optical non-contact production mode, other physical contact cannot be generated to cause damage to bare fibers of the fiber bragg grating, and the product reliability and the production yield are improved; the laser divergence angle is small, and collimation output can be kept in a long distance, so that laser annealing can be performed by keeping a relatively long distance from the to-be-processed fiber bragg grating, the operability space of the fiber bragg grating is large, the misoperation is reduced, and the product reliability and the production yield are improved.
Description
technical field [0001] The invention relates to a fiber grating preparation technology, in particular to a high-power fiber grating laser annealing system and method. Background technique [0002] With the development of fiber lasers, the requirements for the withstand power and reliability of fiber gratings, the core device of fiber lasers, are getting higher and higher. The fiber grating preparation process generally includes fiber hydrogen loading, fiber grating writing, fiber grating annealing, recoating and packaging. The traditional fiber grating annealing process is to remove the residual hydrogen atoms in the optical fiber. The current common method is to put the fiber grating as a whole into a constant temperature box. The annealing temperature generally does not exceed 120 °C, otherwise the coating layer will be aged. However, this process The produced fiber gratings have low power tolerance, which makes it difficult to meet the increasing high-power application r...
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IPC IPC(8): G02B6/02
CPCG02B6/02147Y02P40/57
Inventor 刘广柏李文涛李骁军严超韦锦
Owner 江苏睿赛光电科技有限公司