Detecting device for fiber line losses and fiber end surface losses

Abstract

The invention discloses a detecting device for fiber line losses and fiber end surface losses. The detecting device comprises a light splitter, a stable light source, an optical power meter, an adapter, a standard connector, a fiber connector, a calibration connector. The light splitter is connected with the stable light source through a first female port of the light splitter, is connected with the optical power meter through a second female port of the light splitter, and is connected with the standard connector through a first branch port of the light splitter. The optical power meter is respectively connected with a lateral detector and a forward detector; the lateral detector is installed in the adapter to detect the fiber end surface losses; the forward detector is connected to a second female port of the light splitter to detect the fiber line losses. The construction worker is able to test the fiber line losses and the connection quality of the field formed fiber connector respectively by carrying one device; the engineering construction and monitoring are carried out conveniently; and the construction field device investment cost is lowered. The detecting device having a small size and high reliability is suitable for large-area popularization.

Description

technical field [0001] The invention relates to the field of optical fiber line loss and optical fiber connector termination quality detection. The device connects a stable light source, a forward detector of an optical power meter, and a standard connector of a detection end through an optical splitter. The optical fiber connector is connected to the standard connector through an adapter. The connectors are coupled together and the side detector of the optical power meter is installed in the adapter. After the detection light wave emitted by the stable light source is branched by the optical splitter, when part of the detection light wave reaches the coupling point, the intensity of the refraction and diffuse reflection light received by the side detector can be used to judge the loss of the fiber end face; the communication light wave enters through the coupling point of the fiber optic connector In the optical splitter, part of the communication light waves finally reaches ...

AI Technical Summary

Problems solved by technology

[0002] At present, in the FTTH fiber-to-the-home project, the non-preset optical fiber connector has no connection point in the V-shaped fastening groove because the prepared on-site optical fiber directly passes through the surface of the ferrule, which greatly reduces the optical performance such as insertion loss after termination However, the optical power meter carried by the construction personnel can only measure the loss of the optical fiber line, and cannot detect the loss of the fiber end face of the fiber optic connector that is terminated on site. The loss of the end face leads to confusion in the judgment of construction responsibilities, which seriously affects the experience of operators on non-pre-installed optical fiber products

[0003] The product currently available on the market that can simultaneously detect fiber line loss and fiber end face loss is an optical time domain reflectometer, which uses the reflection loss phenomenon generated by light waves at the fiber loss point and the coupling point of the fiber optic connector to launch in the fiber line. Detect light waves. By detecting the light waves returned from the original path, the distance between the loss point and the coupling point and the reflected light wave intensity at this point can be measured, so as to indirectly judge the connection loss and the total line loss of the loss point and the coupling point. Although the device can Perform high-speed and batch detection of loss points and coupling points on optical fiber lines, and optical fiber lines, and can accurately locate fault points. However, due to the high price of the equipment, the price exceeds tens of thousands of yuan, and it cannot be equipped in large quantities to ordinary construction personnel. Moreover, the difficulty of use has brought about the fact that this equipment is rarely used in engineering construction. How to provide a device that can detect both optical fiber line loss and optical fiber end face loss has become a worldwide problem.

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