A method for fixing a coated fiber optic mirror

Abstract

The invention belongs to the technical field of reflector packaging, and discloses a method for fixing a coated optical fiber reflector, comprising: setting a quartz package with a through groove, and making the notch of the through groove upward; Gel is injected into the groove to form a first gel layer, and the outer surface of the first gel layer facing the notch through the groove is a support plane, so that the support plane and the notch through the groove Arranging at intervals; extending one end of the coated optical fiber into the through groove, so that the part of the coated optical fiber extending into the through groove extends along the through direction of the through groove, and is placed on the support plane Above: gel is injected into the through groove to form a second gel layer, so that the second gel layer encapsulates part of the coated optical fiber in the through groove. In the present invention, the quartz package can release the deformation of the package gel itself when it expands with heat and contracts with cold through the opening on one side of the groove.

Description

technical field [0001] The invention relates to the technical field of reflector packaging, in particular to a method for fixing a coated optical fiber reflector. Background technique [0002] Reflective fiber optic sensors have the characteristics of excellent electrical insulation performance, radiation resistance, frequency response and safety. The reflector is a core optical device that makes up this kind of sensor, and its performance directly affects the normal operation and application of the sensor. Existing reflective optical fiber sensors usually use coated optical fiber, that is, coating at the output end of the optical fiber. In this kind of reflector, the coating structure is easily affected by the humid and hot environment, resulting in changes in reflectivity and affecting the performance of the reflector. It needs to be packaged to ensure its performance and strength. [0003] In order to ensure the performance and strength of the mirror, its packaging stru...

AI Technical Summary

Problems solved by technology

[0004] In the existing packaging structure, when the coated optical fiber is fixed, the coated optical fiber is usually packaged in a quartz glass tube, and in order to ensure the reliability of the fixation, the length of the gel packaging must be greater than 25mm, because the packaging gel is sealed in the quartz glass tube Therefore, the thermal expansion and contraction of the gel will cause it to flow along the length of the quartz glass tube, thereby generating axial and radial stress on the coated optical fiber, affecting the measurement results and service life of the reflective optical fiber sensor

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