FTTH classification and analysis of fast connector

Now includes the foreign country, connector manufacturers more quickly, the material on its structure and also formed their own characteristics. Structure Category: Mechanical Splicing-and hot-melt two categories. Mechanical splice type was divided: Straight and embedded type. Straight: cable stripping, cutting directly through to the end of the connector from the top of the internal connector is no connection point; embedded type: mortise joints embedded within a fiber optic cable stripping, cut and embedded optical fiber docking connector inside the tank v, V tank filled with matching fluid.

 Shortcomings through structure

First: the cable end of the cutting dependence; because the structure is straight from the connector end of the fiber directly to the connector through the top, which means cutting fiber optic connector end face is, if the fiber cut end is not flat, is bound to affect connector performance indicators, especially the return loss is more insecure; traditional pigtails, jumpers in the production of indicators to ensure their return, are to go through the grinding, and grinding process according to the different ferrule, fiber optic cable on the end to distinguish, into PC, UPC, APC, and only through hand-cut face structure, there is no ground, let alone PC, UPC, APC, if you want to ensure quality, can only rely on the operator of the cutting level, so the requires the operator to have a strong fiber construction capabilities and experience.

Second, the diameter of the ceramic ferrule and fiber matches demanding; through the same type of structure is also due to the tail fiber directly from the connector to the connector through the top, which requires internal diameter ceramic ferrule fiber cable diameter greater than or equal to Otherwise, do not go through. But it is not too big, too much fiber in the ferrule was led inside the rock, leading to partial core. Thus affecting the connector performance.

Third, the length of the cutting, gripping parts demanding strength; cutting the fiber if you stay long or short fibers resulting in wear when naked through the head or head, can lead to attenuation. Besides, even length of the place, a fixed optical fiber cable for the rear gripping piece high strength requirements; cable because the site and the user in the course of the pull, and with the increase of life, the material deformation can cause fiber-optic cable relative displacement occurs with the connector. Experiments show that bulge or sag in the case of more than 50nm, the connector will become a great loss. Of course, straight structure also has its advantages, the connector itself is its simple structure, relatively easy to plant, so the cost is low.