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Centralized in-service OTDR testing in a CWDM business access network

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5 Author(s)
N. J. Frigo ; AT&T Labs. Res., Middletown, NJ, USA ; P. P. Iannone ; K. C. Reichmann ; Xiang Zhou
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This paper describes "virtual common space", an access architecture that uses inexpensive "coarse" wavelength-division-multiplexing (CWDM) technology to extend the advantages of wavelength-division multiplexing (WDM) to business access applications. This new approach suggests new operations and diagnostic requirements. A wavelength-selective optical time-domain reflectometer using CWDM sources is demonstrated for such procedures. Some of the potential impairments that could arise from in-service monitoring on these systems are quantified.

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Journal of Lightwave Technology  (Volume:22 ,  Issue: 11 )