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Optical spectrum Analyzers in Next-Gen Networks

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Optical spectrum Analyzers in Next-Gen Networks

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  • Author: Francis Audet
Several high-bandwidth networks have recently been upgraded to include reconfigurable optical add/drop multiplexers (ROADMs) to improve efficiency and flexibility. ROADMs allow networks to remotely change the amount of dropped or added wavelengths on the express route in order to optimize bandwidth-for example, by not dropping wavelengths when bandwidth is not required. At the heart of a ROADM is a wavelength-selectable switch (WSS), which is used to redirect any wavelength to any direction; the WSS operates independent of color, direction and contention. While this does in fact offer network flexibility, scalability and security, it also changes testing rules.

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