So in this section I want to talk a little bit about fiber optic connectors. So single mode fiber should only use SC or LC connectors in a modern installation. There are some older fiber connectors that are okay but SC or LC are what we recommend. And the best practice is to fusion splice a factory-built UPC. UPC is Ultra Polished Connector. It's a connector that's been ultra polished, pigtail onto the existing fiber onto the fiber cable you've installed. I note that the type of fiber can be indicated by the connector bodies the connector itself. If the connector body has some blue on it, it's always going to be cinema tan or beige is multi-mode And then if you have some metallic connectors they can be either single or multi-mode. You'll have to check the cable itself. Here is explaining the difference between the types of polish on the connectors. So a flat connector, there's air between the surfaces and you get back reflection so you know you'll have 14 db of back reflection. Polish connector where they're physically contacted. There's not any air so the back reflection is much less. You'll have negative 40 db. You know it'll be a lot less an ultra polished connector is just better polished. It'll be at -55 db and then angle polish connectors really reduce back reflection the most and it's at 70 db. By far the most common type of connector to use and they work fine in the campus environment is UPC connectors. APC might be used if you're going to run cable tv or very, very long haul fiber, you know hundreds and hundreds of kilometers but UPC is by far the most common. Fiber patch cords. You can tell a lot about what type of fiber it is by looking at the patch cords. So OM1 is typically an orange patch cord. OM2 often is orange as well. OM3 and OM4 are light blue some call it aqua and then uh OM5 which we haven't really talked about is lime green. Single mode fiber patch cords are virtually almost always yellow and you can get links of fiber patch cords from really short to really, really long and you can put different connectors on different ends you know. Here's some LC and SC connectors. On the left hand side you have a simplex connector you know. Simplex patch cord that has an SC on one end and an LC on the other end. What's most common in our in our type environment is duplex patch cords because most things you're going to deploy require transmit fiber and receive fiber. And this is showing a yoked, they're yoked together with a connector both SC and LC connectors. Here's some examples of some fiber patch panels the fiber that's in a cable and you can see this best on the rack mount fiber panel here. That is a black cable that runs into the back of that. The fiber has been broken out, connectors are placed on the end of it and it's just placed into a barrel in the fiber patch panel and that's what you plug your fiber patch cords into.

© Produced by Philip Smith and the Network Startup Resource Center, through the University of Oregon.

Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
This is a human-readable summary of (and not a substitute for) the license. Disclaimer. You are free to: Share — copy and redistribute the material in any medium or format Adapt — remix, transform, and build upon the material The licensor cannot revoke these freedoms as long as you follow the license terms. Under the following terms: Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. NonCommercial — You may not use the material for commercial purposes. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.