Fiber Optic mismatch when splicing cable spans during construction is very common problem for fiber splice qualificaiton and correct loss acceptance during OTDR testing. Viaivi experts will be comparing why this occurs and why true BI-DIRECTIONAL ANALYSIS AND LOOPBACK TESTING is required for accurate accptance records.

Resource Links: #1 https://www.viavisolutions.com/en-us/bidirectional-otdr-testing

#2 https://blog.viavisolutions.com/2018/03/07/fiber-testing-get-right-perspective/