High resolution telemetry module for 800G optical transport
Coherent (formerly II-VI), has developed an ultrahigh-resolution telemetry module, or optical channel monitor (UHR-OCM), for embedded performance monitoring in optical transport systems transmitting at up to 800G and beyond.
The UHR-OCM module provides next-generation transport systems, such as reconfigurable optical add-drop multiplexers (ROADMs), with ultrahigh-resolution spectral scans of super-channels transmitting at up to 800 Gbps and beyond. The fine resolution of the spectral scans enables these dynamically reconfigurable systems to achieve in real time the tuning precision required to reliably maintain their transmission reach, ranging from hundreds to thousands of kilometres.
The UHR-OCM integrates patented and proprietary coherent receiver and tunable laser technologies. It can scan the C- and L-bands with 1.25 GHz optical resolution bandwidth, 312.5 MHz readout resolution, and a frequency accuracy of less than 1 GHz. The UHR-OCM provides polarization-specific spectral content and measures optical signal-to-noise ratio (OSNR).
“The telemetry performance that transport systems require is nearing that of test and measurement instruments, as we approach the era of one terabit per second super-channels,” said Dr. Richard Smart, Senior Vice President, ROADM Business Unit.
“The UHR-OCM module, which leverages the photonic engine design of our WaveAnalyzer instrument, can resolve extremely fine features in the spectrum, down to individual carriers densely packed into multicarrier super-channels. Yet, the module’s small size makes it the ultimate solution for embedded telemetry in state-of-the-art ROADM systems, such as the node-on-a-blade platform that we recently announced.”
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