Lightpath (optical network)

A lightpath in optical networks 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 processings.[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]

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See also

References
  1. Jue, Jason P. "Lightpath Establishment in Wavelength-Routed WDM Optical Networks" (PDF). Archived (PDF) from the original on 11 August 2017. Retrieved 28 January 2018.
  2. "OADM". 7 August 2006. Archived from the original on 4 March 2016.
  3. 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. ISBN 0-8186-8292-2. Abstract.
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