Manufacture method of low-stress polarization maintaining optical fibre applied to coupling

Abstract

The invention relates to a manufacture method of a low-stress polarization maintaining optical fibre applied to coupling, which manufactured by utilizing a first image detection device (1), a second image detection device (2), a bared polarization maintaining optical fibre limiting component (3), a three-dimensional movement fine-tuning table (5), an adhesive coating part (6), a polarization maintaining optical fibre fixing groove body (7) and a polarization maintaining optical fibre rotary component (8) and comprises the step 5 of: adjusting the polarization maintaining optical fibre rotary component (8), so that a polarization maintaining optical fibre fixed in a groove body (j) rotates around a central axis until a raccoon eye O1 / O2 of the polarization maintaining optical fibre observed through the first image detection device (1) is the same to or vertical to the horizontal line of a display device of the first image detection device (1). By adopting the technical scheme disclosed by the invention, a fast axis or a slow axis of the polarization maintaining optical fibre can be adjusted through the polarization maintaining optical fibre rotary component, therefore, the main stress direction of adhesive is the same to the direction of the fast axis or the slow axis, so that accurate location is realized; and minimum stress influence of the manufactured polarization maintaining optical fibre can be achieved.

Description

technical field [0001] The invention relates to a method for manufacturing a low-stress polarization-maintaining optical fiber applied to coupling, that is, the polarization-maintaining optical fiber can be fabricated into a single core for coupling and connection between devices, and the invention belongs to the field of communication. Background technique [0002] Ordinary optical fibers will become asymmetrical due to various mechanical stresses in practical applications, resulting in birefringence, so the polarization state of light will change irregularly when transmitted in ordinary optical fibers. Polarization-maintaining fiber can solve the problem of polarization state change and ensure that the linear polarization direction of light remains unchanged during transmission. It is generally used in devices that are sensitive to polarization state, such as fiber optic gyroscopes, fiber optic hydrophones and other sensors and DWDM , EDFA and other optical fiber communica...

AI Technical Summary

Problems solved by technology

[0004] When coupling with the device, it is necessary to use a polarization-maintaining fiber to make a single core. Due to the influence of external stress, the polarization-maintaining performance of the polarization-maintaining fiber is likely to decline, especially at high and low temperatures, due to the stress of the adhesive, It will lead to obvious changes in the extinction ratio index and affect the performance of the device

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