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Drastically cutting Down Turn-Up and Repair Time with an Impairment Detection Tool

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Drastically cutting Down Turn-Up and Repair Time with an Impairment Detection Tool

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  • Author: Jean-Sébastien Tassé, Francis Audet
Despite advances in modulation formats and equipment management systems offered with monitoring tools, faults, issues, delays and errors still occur all too frequently in wavelengthdivision multiplexing (WDM) networks. When this happens, the optical spectrum analyzer (OSA) is a tool of choice for identifying the issue, and helping to fix it. However, as networks become more and more complex (tighter channel spacing, mesh and ROADM-based, polarization-multiplexed signals, etc.), the number of potential causes for failure increases, making it extremely difficult to find the issue behind a given failure. Most providers and vendors have developed their own best practices involving use of an OSA to locate the issue. Figure 1 presents an example of a common “best practice” procedure.

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