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Dynamic digital holographic wavelength filtering

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3 Author(s)
M. C. Parker ; Fujitsu Telecommun. Europe Ltd. Res., Colchester, UK ; A. D. Cohen ; R. J. Mears

This paper describes the theory and results of a new generic technology for use in optical telecommunications and wavelength division multiplexing (WDM): dynamic digital holographic wavelength filtering. The enabling component is a polarization-insensitive ferroelectric liquid crystal (FLC) spatial light modulator (SLM) in conjunction with a highly wavelength-dispersive fixed diffractive element. The technology has been used to perform demultiplexing of single or multiple WDM signals, dynamic erbium doped fiber amplifier (EDFA) gain equalization and channel management, and used to tune an erbium-doped fiber laser (EDFL) functioning as a high power, very narrow linewidth WDM source

Published in:

Journal of Lightwave Technology  (Volume:16 ,  Issue: 7 )