It is also the case that the three aforementioned connectors are all inter-mateable, whereas the APC isn’t.
Jade mortal kombat 11 Pc#
It is true that this slight angle on each connector brings with it rotation issues that Flat, PC and UPC connectors simply don’t have. Combined with that, any light that is redirected back towards the source is actually reflected out into the fiber cladding, again by virtue of the 8° angled end-face. This is because adding a small 8° angle to the end-face allows for even tighter connections and smaller end-face radii. Only APC connectors can consistently achieve such performance.
Step forward the Angled Physical Contact (APC) connector.Īlthough PC and UPC connectors have a wide range of applications, some instances require return losses in the region of one-in-a-million (60dB). So what the industry needed was a connector with low back reflection, that could sustain repeated matings/unmatings without ORL degradation. UPC connectors do have a low insertion loss, but the back reflection (ORL) will depend on the quality of the fiber surface and, following repeat matings/unmatings, it will begin to deteriorate.ĭownload our Guide to Broadband Connectors and find out an in depth research into broadband connectors:
Most engineers and installers believe that any poor performance attributed to UPC connectors is not caused by the design, but rather poor cleaving and polishing techniques. This results in a lower back reflection (ORL) than a standard PC connector, allowing more reliable signals in digital TV, telephony and data systems, where UPC today dominates the market.
This helps to decrease the air gap issue faced by regular Flat Fiber connectors, resulting in lower Optical Return Loss (ORL), with less light being sent back towards the power source.īuilding on the convex end-face attributes of the PC, but utilizing an extended polishing method creates an even finer fiber surface finish: bringing us the Ultra Physical Contact (UPC) connector. The PC is similar to the Flat Fiber connector but is polished with a slight spherical (cone) design to reduce the overall size of the end-face. This is not much use for single mode fiber cables with a core size of just 8-9 µm, hence the necessary evolution to Physical Contact (PC) Connectors. The primary issue with Flat Fiber connectors is that when two of them are mated it naturally leaves a small air gap between the two ferrules this is partly because the relatively large end-face of the connector allows for numerous slight but significant imperfections to gather on the surface. To help us understand all this jargon, let’s look back at why the original Flat Fiber Connector evolved into the Physical Contact (PC) connector and then onto UPC and APC. To recap, I covered SC, LC, FC, ST and MTP/MPO connectors, and looking through the comments I thought it would be beneficial to focus on one area that the original post deliberately didn’t cover - the differences between Angled Physical Contact (APC) and Ultra Physical Contact (UPC) connectors.īeside one having a green body and the other being colored blue, the different ways they both treat light is crucial in planning a network, as several readers pointed out. Thanks again to everyone around the world that contributed, both directly on the PPC's blog and through various social groups. I wrote a blog post last year on the different types of connectors available, which sparked a great deal of feedback and discussion, demonstrating how important the whole topic is to both fiber installers and network planners alike.