A kind of optical fiber coupler and its preparation method and package failure detection method

Abstract

The invention relates to the technical field of optical fiber couplers, and discloses an optical fiber coupler, a manufacturing method of optical fiber couplers and a detection method for packaging efficacy losing of the optical fiber couplers. The manufacturing method includes the steps of stripping an optical cable PVC outer layer; manufacturing the optical fiber couplers with the parallel clamping fused biconical taper process, and detecting the longitudinal tensile strength of the optical fiber couplers through pulling force after completion of sintering; conducting primary packaging on the sintered semi-finished products; then conducting secondary packaging on the sintered semi-finished products; conducting hot bulb processing on terminals of optical fibers; placing the semi-finished products in the environment with the temperature ranging from 95 DEG C to 105 DEG C for baking for 1.5 hours to 2.5 hours, cooling the semi-finished products to the normal temperature, placing the semi-finished products in the environment with the temperature ranging from -40 DEG C to 85 DEG C for circulating for 45 hours to 51 hours, checking the sealing condition of secondary packaging through fluorine-contained oil with the temperature ranging from 85 DEG C to 95 DEG C, and screening defective products; conducting tertiary packaging on the qualified semi-finished products. By means of the manufacturing method of the optical fiber couplers, the problem that insertion losses of traditional optical fiber couplers in the low-temperature state are increased is solved, and the stability of the optical fiber couplers is improved.

Description

Technical field [0001] The present invention relates to the technical field of optical fiber couplers, and discloses an optical fiber coupler, a preparation method thereof, and a method for detecting package failure. The optical fiber coupler functions to split and combine optical signals, and is used in optical fiber communication, CATV, Fiber optic gyroscopes, fiber optic hydrophones, and fiber optic sensing are widely used in many fields. Background technique [0002] Optical fiber couplers play the role of splitting and combining optical signals, and are widely used in many fields such as optical fiber communications, CATV, optical fiber gyroscopes, optical fiber hydrophones, and optical fiber sensing. [0003] The fusion tapering method is currently the most mature and simplest method for preparing optical fiber couplers. When using the fusion taper method to prepare the optical fiber coupler, the coating layer of two or more Φ0.25mm optical fibers must be stripped first, and...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an optical fiber coupler and its preparation method and a detection method for packaging failure, aiming to solve the problem of increased insertion loss of traditional loose tube optical fiber couplers at low temperature in the prior art

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