A multifunctional optical fiber microstructure continuous writing device and method

Abstract

The invention discloses a multifunctional optical fiber microstructural continuous writing device and method. The device comprises an optical fiber pay-off module for paying off optical fiber at the speed determined by a writing optical fiber microstructural type. The optical fiber enters an optical fiber cleaning module to be cleaned, and then the cleaned optical fiber is paid off, the cleaned optical fiber enters an optical fiber adjusting module, the optical fiber adjusting module adjusts the position and the inclined angle of the cleaned optical fiber at a writing region, a laser generation module is opposite to the optical fiber adjusting module, the laser generation module writes the optical fiber microstructure on the optical fiber, different microstructures are written on the optical fiber by changing the speed of the optical fiber and the starting and ending time of pulse laser, and an optical fiber take-up module is used for storing the optical fiber with the written microstructures. Compared with a common optical grating writing platform, due to the fact that the optical fiber can independently and accurately move relative to a pulse interference laser source, meanwhile, the optical grating structure can be written on the optical fiber freely by adjusting the time of transmitting pulse interference laser and the time of ending transmission of the pulse interference laser, different optical fiber microstructures can be written, the production efficiency is greatly improved, and the quality of the written optical fiber microstructures is greatly improved.

Description

technical field [0001] The invention relates to the preparation of an optical fiber grating in an optical fiber sensing system, in particular to a multifunctional optical fiber microstructure continuous writing device and method. Background technique [0002] Fiber Bragg grating is a periodic refractive index modulation structure formed in the core of the fiber by ultraviolet exposure or femtosecond laser using the photosensitivity of the fiber. The advantages have been extensively studied. Fiber gratings with different structures have many unique properties, making them a basic fiber optic device with broad application prospects in the fields of fiber optic communication and fiber sensing. [0003] In 1993, K.O.HiLL and others proposed the phase mask method to make fiber gratings. Since then, the production of fiber gratings has entered the era of commercialization. The phase mask method to fabricate fiber grating is based on the spatial interference fringes generated by ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the many technical difficulties in the traditional fiber grating writing device and method, as well as the poor reliability of the fiber grating written by the traditional online solution, and it is difficult to write a variety of fiber gratings with different structures. A multifunctional fiber microstructure The continuous writing device and method doubles the production efficiency of optical fiber microstructures and reduces the cost of manufacturing various optical fiber microstructures. In the present invention, optical fiber microstructures refer to tiny structures written in optical fibers with lasers, including any Structured gratings and various combinations of arbitrary structured gratings

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