Apc Fiber Connector
See the below images for better understanding.
Apc fiber connector. However significant insertion loss can result when mating to different styles and because of this we recommend that fc apc connectors be mated only with other fc apc connectors. Upc connectors are not exactly flat however. These connectors also feature a low 0 25 db connector to connector typical loss. Considered by some to be the modern replacement of the sc connector.
Upc connectors are polished with no angle but apc connectors feature a fiber end face that is polished at an 8 degree angle. Another more obvious difference is color. Its introduction was less successful in part due to initially high license fees. Like illustrated in the following picture.
So the light in apc connectors does not return to the source. The advance in analogue fiber optic technology has driven demand for it to replace more traditional coaxial cable copper. The fc connector is a fiber optic connector with a threaded body which was designed for use in high vibration environments. Upc connectors are polished with no angle.
They have a slight curvature for better core alignment. It is commonly used with both single mode optical fiber and polarization maintaining optical fiber fc connectors are used in datacom telecommunications measurement equipment and single mode lasers they are becoming less common displaced by sc and lc connectors. The main difference between upc and apc connector is the fiber end face. Apc connectors feature a fiber endface that is polished at an eight degree angle.
The uses of apc connectors. In digital applications there is no issue using pc and apc connectors as light can get though in an on off manner. Because of the angle the reflected light does not stay in the fiber core but instead leaks out into the cladding. Differences between upc and apc connector.
With upc connectors any reflected light is reflected straight back towards the light source. The best feedback examples from my previous blog came from people experienced with fttx and radio frequency rf applications. So why then is the apc connector so important in fiber optics. With an apc connector the angle directs the light off into the side walls of the fiber where it is absorbed by the fiber jacket.
What are apc connectors. Better connectors lose very little light due to reflection or misalignment of the fibers. The main difference between apc and upc connectors is the fiber endface. Apc connector is a type of fiber connector that minimizes backreflection due to a 5 to 15 angle polish applied to end faces.
The difference is that single mode lc connectors have it in apc upc polishing type while multimode lc fiber connectors have upc polishing only.