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Optical monitoring using data correlation for WDM systems

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3 Author(s)
Nelson, L.E. ; Crawford Hill Lab., AT&T Bell Labs., Holmdel, NJ, USA ; Cundiff, S.T. ; Giles, C.R.

We demonstrate a new technique for monitoring channel wavelength and power in a wavelength-division-multiplexed lightwave system. This technique uses a dispersive delay line to map wavelength into time and data correlation to determine the time shift of the channels. The technique was experimentally demonstrated for three 2.5-Gb/s channels spaced by 100 GHz using a set of concatenated fiber Bragg gratings as the dispersive delay.

Published in:

Photonics Technology Letters, IEEE  (Volume:10 ,  Issue: 7 )