A good quality of fiber optic networks is very important for the healthy of the critical networks especially for business use. For a network administrator, it is very necessary to known how well the invested fiber cabling network performed and how to solve problems at the first time they occur. Fiber optics certification has experienced a development from Tier 1, the Fiber Optics Certification Basic to Tier 2 fiber certification, that extended Tier 1 with an Optical Time Domain Reflectometer (OTDR).
The Tier 1 tests are attenuation (insertion loss), length and polarit, the complete Tier 1 fiber certification is required in all fiber optic cabling links. During the Tier 1 testing, each fiber
link is measured for attenuation and results are documented. This test ensures that the fiber link exhibits less loss than the maximum allowable loss budget for the immediate application. This CertiFiber is one handheld tester that quickly and easily certifies multimode networks. One button measures fiber length and optical loss on two fibers at two wavelengths, computes the optical loss budget, compares the results to the selected industry standard and provides an instant PASS or FAIL indication. By Tier 1 testing, the invisible events are hardly to locate.
Tier2 is the extended Tier 1 with the application of an additional tool, OTDR, which is used to trace each fiber link. An OTDR trace is a graphical signature of a fiber’s attenuation along its
length. You can gain insight into the performance of the link components such as fiber optic cable, connectors and splices and the quality of the installation by examining non-uniformities in the trace. This fiber test certifies that the workmanship and quality of the installation meets the design and warrantee specifications for current and future applications. An obvious advantage of using OTDR is that is helps detect the invisible events that may happened when conducting only loss/length (tier 1) testing, which is regarded as a complete fiber certification.
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