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Proceedings Paper

Use of extended-spectral-width broadband LEDs within WDM point-sensor networks
Author(s): John M. Senior; Steven E. Moss; Stewart D. Cusworth
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Paper Abstract

Spectral slicing of a broadband LED source is an efficient method for providing multiple wavelength channels for WDM sensor networking. However, optical power budgetary considerations limit the numbers that can be accommodated even with the use of power efficient topologies. Very recently, extended spectral width broadband LEDs have become available which provide spectral widths greater than 120 nm. Such LED devices exhibit both power output and spectral width capabilities comparable with the combined effect of two or three conventional LEDs. This paper reports on an investigation of the performance of such devices in relation to their utilization within WDM point-sensor networks. Furthermore, specific available device characteristics are utilized within a WDM sensor network modeling process in order to determine the maximum number of sensors that can be accommodated on various power efficient topologies. Hence, it is demonstrated that the use of these very broadband LED sources can facilitate significantly larger numbers of sensors than may be accommodated by employing spectral slicing of conventional LEDs.

Paper Details

Date Published: 5 March 1993
PDF: 8 pages
Proc. SPIE 1797, Distributed and Multiplexed Fiber Optic Sensors II, (5 March 1993); doi: 10.1117/12.141289
Show Author Affiliations
John M. Senior, Manchester Polytechnic (United Kingdom)
Steven E. Moss, Manchester Polytechnic (United Kingdom)
Stewart D. Cusworth, Manchester Polytechnic (United Kingdom)

Published in SPIE Proceedings Vol. 1797:
Distributed and Multiplexed Fiber Optic Sensors II
John P. Dakin; Alan D. Kersey, Editor(s)

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