Engineering:Lightpath (optical network)
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Short description: Path between two nodes in an optical network
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In optical networking, a lightpath is a path between two nodes in an optical network between which light passes through unmodified.
Description
When a lightpath can be established between source and destination node endpoints the connection is totally optical and avoids throttling by intermediate electronic conversions and processing.[1] Where a lightpath passes through an Optical add-drop multiplexer (OADM) is known as a cut-through lightpath. Where a lightpath is added or dropped at an OADM, it is known as an added/dropped lightpath.[2]
Semi-lightpath
Where endpoints are connected by a series of lightpaths with the intermediate nodes only changing the light wavelength at the junctions this may be referred to as a semi-lightpath.[3]
See also
References
- ↑ Jue, Jason P.. "Lightpath Establishment in Wavelength-Routed WDM Optical Networks". http://www.utdallas.edu/~jjue/cs6v81/articles/dle.pdf.
- ↑ "OADM". 7 August 2006. http://www.optical-network.com/terminology.php?letter=all&id=8.
- ↑ Liang, Weifa; Havas, G.; Xiaojun, Shen (2003). "Improved lightpath (wavelength) routing in large WDM networks". Proceedings. 18th International Conference on Distributed Computing Systems (Cat. No.98CB36183). IEEE. pp. 516–523. doi:10.1109/ICDCS.1998.679797. Abstract. ISBN 0-8186-8292-2.
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