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New OSAS with in-band OSNR Capabilities-Powerful Tools for Next-Generation Networks

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New OSAS with in-band OSNR Capabilities-Powerful Tools for Next-Generation Networks

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  • Author: Marie-Hélène Côté
Dense wavelength-division multiplexing (DWDM) has emerged as a key strategic solution for telecom service providers. This technology provides scalable bandwidth, overcomes most fiber-exhaust scenarios, can handle different data formats and bit rates and is easily integrated into current network architectures at a reasonable cost. Recent technological advents, such as reconfigurable optical add/drop multiplexers (ROADMs) and new high-speed modulation formats for 40 Gbit/s or 100 Gbit/s, have changed the way that some tests need to be performed, e.g., optical signal-to-noise ration (OSNR). When assessing the ability of the spectral characterization tools to remain future proof, the previously listed capabilities need to be taken into consideration.

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