Bending optical fiber array and preparation method thereof

Abstract

The invention relates to a bending optical fiber array. The bending optical fiber array comprises a cover plate, a baseplate and optical fibers between the cover plate and the baseplate, the optical fibers are pre-bent strip-shaped multi-channel optical fibers and comprise strip-shaped naked optical fiber parts without coating layers and strip-shaped optical fiber parts with coating layers, the strip-shaped naked optical fiber parts without the coating layers are bent to a preset angle A, and the preset angle A is larger than or equal to 80 degrees and smaller than or equal to 150 degrees. According to the bending optical fiber array, the strip-shaped multi-channel optical fibers are pre-bent to the required angle, then the baseplate and the cover plate are mounted, so that the optical fiber array does not have the bending stress in the mounting process, the optical fibers are not easily damaged or broken, and the bending optical fiber array is convenient to mount and lower in cost; inaddition, according to the optical fiber array, the optical fibers can be bent into any required angle through heating equipment in advance, the angle can be extremely small, and the loss of the optical fibers cannot be too large.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to a bent optical fiber array and a preparation method thereof. Background technique [0002] At present, in the prior art, there are usually the following two methods to bend the optical fiber. The first method is to reduce the thickness of the optical fiber cladding. The specific implementation method is to corrode the optical fiber cladding with a chemical liquid to make the cladding thinner, such as Thinning from a diameter of 125um to 25um, and then bending, this method reduces the thickness of the cladding, and the fiber is easier to break. Another solution is to make the fiber cladding / core thinner. The specific method is to use high temperature to soften the fiber, and then stretch it to make the fiber thinner. After the fiber is thinned, it is easy to bend. The fiber structure and refractive index distribution change, the optical performance will be affected, and...

AI Technical Summary

Problems solved by technology

In this way, the bending stress of the multi-channel optical fiber array is very large, and the optical fiber array is easily damaged or broken, which reduces the service life, and each optical fiber array needs to be installed with a metal buckle, which is not only complicated and difficult to install, but also increases the metal The production cost of the buckle; in addition, this method of fixing by metal buckle cannot make the bending angle of the multi-channel fiber array too small, otherwise, the fiber is easy to break and the fiber loss is large

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