Fiber bragg grating producing device capable of controlling wavelengths

Abstract

Disclosed is a fiber bragg grating producing device capable of controlling wavelengths. The device is characterized by comprising horizontal displacement platforms and lifting platforms which are arranged at intervals, wherein S-shaped tension sensors and tensometers are arranged on the horizontal displacement platforms, the tensometers and the S-shaped tension sensors are connected electrically,one ends of the S-shaped tension sensors are connected fixedly with the horizontal displacement platforms, other portions of the S-shaped tension sensors are suspended above the horizontal displacement platforms, first optical fiber clamping devices are fixed at the other ends of the S-shaped tension sensors, and second optical fiber clamping devices are arranged on the lifting platforms.

Description

technical field [0001] The invention belongs to the technical field of fiber grating manufacturing, and in particular relates to a fiber grating manufacturing device that can precisely control the grating wavelength by measuring and adjusting the tensile force that the optical fiber bears in a straightened state during the fiber grating manufacturing process. Background technique [0002] Fiber gratings have the functions of optical filters and mirrors, and are indispensable and important devices in optical fiber communication systems and optical fiber sensing systems. Since the advent of fiber gratings, people have proposed a variety of fiber grating manufacturing methods, such as standing wave interference method, point-by-point exposure method, holographic exposure method and phase mask method, etc., writing fiber gratings with various wavelengths and spectral shapes has become Reality. In the production process of fiber gratings, it is often necessary to straighten the ...

AI Technical Summary

Problems solved by technology

In the current production process, the optical fiber needs to be fixed manually, but experience alone cannot guarantee the same pulling force when placing the optical fiber each time, which leads to the inability to accurately control the same wavelength of the same batch of gratings, and the pulling force needs to be measured and adjusted

In addition, the use of phase masks makes it possible to mass-produce fiber gratings, but each phase mask has a fixed period, and only fiber gratings with corresponding periods can be produced. In fact, the influence of pulling force on the wavelength can be used. Fabricate gratings with different wavelengths, but this also requires precise measurement and adjustment of the tension that holds the fiber

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