Coating apparatus and process for longoptic fiber grating

A fiber grating and coating device technology, which is applied to the surface coating liquid device, coating, pretreatment surface, etc., can solve the problems of difficulty in ensuring coating uniformity, fiber grating reflection, time delay and other characteristics degradation , to achieve the effects of low cost, improved mechanical stress resistance, and high-quality curing

Inactive Publication Date: 2007-06-27
BEIJING JIAOTONG UNIV
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Problems solved by technology

For the chirped fiber grating used as a dispersion compensation device, its length is generally between 100mm and 150mm. When coating with existing equipment, it can only be carried out in sections, and it is difficult to ensure the uniformity of the coating. This makes the fiber grating The reflection, delay and other characteristics are degraded

Method used

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  • Coating apparatus and process for longoptic fiber grating
  • Coating apparatus and process for longoptic fiber grating

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] As shown in Figure 1, the bottom is a high-precision mobile platform 8 controlled by a computer, that is, the ESP 300 motor. The black arrow in the figure indicates the direction in which the fiber grating moves, and its function is to control the movement of the fiber grating during the coating process. The moving range of the moving platform 8 is 200mm, so that the length of the coated fiber grating can reach up to 200mm. The optical adjustment frame 7 is carried on it, and two parts are installed on the optical adjustment frame 7: one part is an optical fiber clamp 3 with a V-shaped groove, which is used to clamp the coated optical fiber 2 part, and the optical fiber clamp on the right side is simultaneously equipped with There is a stress adjustment device 6, which is used to adjust the distance between the two fixtures. When adjusti...

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Abstract

The present invention discloses coating apparatus and process for long fiber grating. The coating apparatus consists of high precision mobile platform, stress adjustable optical regulator, controllable coating material container, coating pliers, ultrasonic light source, reflector, etc. and has relatively low cost. The coating process includes shifting the high precision mobile platform, regulating the optical regulator, regulating the stress, controlled coating the fiber grating, and curing the coated layer with the precisely controlled ultrasonic light source. The present invention has adjustable coating length up to 200 mm, unchanged characteristic of the coated fiber grating and raised mechanical stress performance.

Description

technical field [0001] The invention relates to a large-length optical fiber grating coating device and a coating method thereof, belonging to the technical field of optical fiber grating packaging. Background technique [0002] Fiber Bragg grating is one of the very important passive components in fiber optic communication system, and the method of UV exposure is generally used to write fiber Bragg grating on the stripped bare fiber. After the fiber grating is written, it must be coated to increase its resistance to mechanical stress and maintain its properties. [0003] At present, fiber grating coating equipment is only suitable for coating short fiber gratings and the cost is extremely high. Among them, the coating equipment with the longest coating length of 10mm is priced at 10,000 US dollars, while the latest coating equipment of Japan Fujikura Co. The longest coating length only reaches 50mm. For the chirped fiber grating used as a dispersion compensation device, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05C3/12B05C13/02B05C11/02B05D3/06C03C25/12
Inventor 谭中伟刘艳苏晓星张建勇秦曦
Owner BEIJING JIAOTONG UNIV
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