Formed end surface quality detection device and method for contact-type optical fiber connector

Abstract

The invention discloses a formed end surface quality detection device and method for a contact-type optical fiber connector. The detection device comprises an emission assembly, a power wavelength adjustment assembly, an adapter component and a detection assembly, wherein the emission assembly is connected with a first standard connector by virtue of an optical fiber connecting line and transmitsdetection light waves to an optical fiber connector coupled with the emission assembly by virtue of the first standard connector; the power wavelength adjustment assembly is connected with the emission assembly and used for adjusting emission power or light wavelength of the emission assembly; the detection assembly is arranged above a sleeve. According to the detection device disclosed by the invention, by sensing the existence and amount of light refraction and diffuse reflection brought by formed end surface defects of the optical fiber connector, the formed end surface quality of the optical fiber connector is judged, the defects that standards are non-uniform during detection by adopting an optical fiber end face magnifying lens and the optical fiber connecting quality cannot be intuitively detected are overcome, the condition that an optical power meter cannot sense connecting quality of a single optical fiber connecting point is avoided, and the construction site equipment invested cost is greatly reduced. Moreover, the detection device is small in size, reliable and favorable for large-area popularization.

Description

technical field [0001] The invention relates to the field of optical fiber connector termination quality detection. The method couples the surface of the fiber optic connector with the surface of the standard fiber optic connector, and injects the detection light wave onto the surface of the fiber optic connector. The phenomenon of multiple refraction and diffuse reflection occurs on the surface. According to the intensity of diffuse reflection light, it can be judged whether the quality of the end surface of the optical fiber connector is up to standard. Inspection, convenient for project construction supervision. Background technique [0002] At present, because the prepared on-site optical fiber directly penetrates the surface of the ferrule, there is no connection point in the V-shaped fastening groove of the non-preset optical fiber connector, which greatly improves the optical performance after termination, such as insertion loss, and thus has been widely used. Howeve...

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Problems solved by technology

[0002] At present, because the prepared on-site optical fiber directly penetrates the surface of the ferrule, there is no connection point in the V-shaped fastening groove of the non-preset optical fiber connector, which greatly improves the optical performance after termination, such as insertion loss, and thus has been widely used. However, the current on-site optical fiber preparation method is often completed by mechanical cutting. Since the cutting knife is not equipped with an optical fiber end-face detection optical path, it is impossible to visually check the fiber cutting quality after cutting; and the latest optical fiber end-face processing instrument can detect optical fiber side cutting. The degree of uniformity, and can handle the arc spherical surface of the optical fiber end face, but it is difficult to accurately judge the actual state of the light-through point, and the construction personnel cannot make an accurate judgment on the assembly quality when the non-preset optical fiber connector is assembled. After the terminal is connected to the optical cable, it can be judged by the indirect data of the total link loss, which cannot give the connection quality of the connection point, which leads to confusion in the judgment of construction responsibilities, and seriously affects the operator's experience with non-preset optical fiber products; while the factory batch When the polished fiber jumper produced is used on site, the degradation of the fiber surface quality caused by improper maintenance also requires convenient and rapid detection

[0003] At present, there are two solutions for optical fiber connection quality inspection on the market: one is optical time domain reflectometer, and the other is optical power meter, and the quality inspection of optical fiber connector end face can only be judged manually by optical fiber end face magnifying glass; The field reflectometer uses the reflection loss phenomenon of light waves at the end face of the optical fiber connection, emits light waves to the connection point, and detects the distance of the connection point and the reflected light wave intensity at the point by detecting the light wave returned from the original path, thereby indirectly judging The connection loss of the connection point, although the equipment can perform high-speed and batch detection of the fiber connection points on the optical path, and can accurately locate the fault point, but because the equipment is expensive and the price exceeds tens of thousands of yuan, it cannot be equipped in large quantities. Ordinary construction workers; the optical power meter uses the power loss when light passes through the connection point, and detects the loss of the entire line between the light source and the optical power device, and cannot detect the specific loss of the fiber connection point alone; and the fiber end magnifier Although the condition of the optical fiber surface can be observed, and the impurities, scratches, cracks, pits, etc. attached to the optical fiber surface can be seen, but the 3D dimension position of the optical fiber surface space in the terminated connector cannot be detected, and the connection loss of the optical fiber connector cannot be directly judged , when it is used on-site for non-preset optical fiber connection, since there is no unified inspection method, it can only be judged by the experience of the construction personnel, and a unified standard cannot be formed, which brings serious troubles to the construction. This is also a worldwide problem.

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