http://debianws.lexgopc.com/wiki143/index.php?action=history&feed=atom&title=Optical_performance_monitoringOptical performance monitoring - Revision history2026-05-03T21:01:23ZRevision history for this page on the wikiMediaWiki 1.43.1http://debianws.lexgopc.com/wiki143/index.php?title=Optical_performance_monitoring&diff=2773704&oldid=previmported>Kvng: hyphen2023-10-21T14:47:05Z<p>hyphen</p>
<p><b>New page</b></p><div>'''Optical performance monitoring''' (OPM) is used for managing high capacity [[dense wavelength-division multiplexing]] (DWDM) [[optical communications|optical transmission]] and switching systems in [[Next Generation Networks]] (NGN). OPM involves assessing the quality of data channel by measuring its optical characteristics without directly looking at the transmitted sequence of [[bit]]s. It is a potential mechanism to improve control of transmission and physical layer fault management in optical transmission systems. <br />
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In [[optical communications]], typical roles for optical performance monitoring include ensuring correct switching in [[reconfigurable optical add-drop multiplexer]]s, setting levels for dynamic equalization of the gain of [[optical amplifier]]s, and providing system alarms and error warning for lost or out of specification optical channels.<br />
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The optical component used for this purpose in DWDM networks is known as optical performance monitor (OPM) or optical channel monitor (OCM), which measures channel power, wavelength, and [[optical signal-to-noise ratio]] (OSNR) for each channel. <br />
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== References ==<br />
*D. C. Kilper, R. Bach, D. J. Blumenthal, D. Einstein, T. Landolsi, L. Ostar, M. Preiss, and A. E. Willner, "[http://www.opticsinfobase.org/abstract.cfm?URI=JLT-22-1-294 Optical performance monitoring]," ''J. Lightwave Technol.'' '''22''', 294– (2004). <br />
* ''Journal of Optical Networking'': [http://www.osa-jon.org/virtual_issue.cfm?vid=3 Virtual special issue on optical performance monitoring]. <br />
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[[Category:Network management]]<br />
[[Category:Fiber-optic communications]]</div>imported>Kvng