Yes, and depending on the length of the fiber and the conditions on the other end, you can have a return loss effect causing a splice to appear to have negative loss. Called a “gainer“. But this trace looks like a bad splice to me.
From: Adam Moffett Sent: Thursday, September 28, 2023 7:32 AM To: AnimalFarm Microwave Users Group Subject: [AFMUG] dumb OTDR question Can you have return loss (i.e. reflections) on bad fusion splices? Attached trace is a splitter showing return loss. It's supposed to be fusion spliced, not connectorized. There are several of these on this project. Trying to figure out if contractor snuck in some incorrect parts or if he's got issues with his fusion splicer. I'd assume it's bad splices, but maybe coincidentally the reflectance just happens to be about right for UPC connectors. -------------------------------------------------------------------------------- -- AF mailing list AF@af.afmug.com http://af.afmug.com/mailman/listinfo/af_af.afmug.com
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