Title :
Dynamic spectral equalizer using free-space dispersive optics combined with a polymer-dispersed liquid-crystal spatial light attenuator
Author :
Loukina, T. ; Chevallier, R. ; de Bourgrenet de la Tocnaye, J.L. ; Barge, M.
Author_Institution :
Opt. Dept., Ecole Nat. Superieure des Telecommun., Brest, France
Abstract :
We describe the principle of a dynamic spectral equalizer (DSE), combining high dispersive capabilities of free-space wavelength-demultiplexing optics with a polarization independent polymer-dispersed liquid-crystal spatial light modulator (SLM), to provide wide-spectral-range quasi-continuous variable-gain attenuation and flattening. Preliminary results on C band are presented and discussed, as well as possible extensions toward C + L bands and metropolitan network functionalities.
Keywords :
demultiplexing equipment; equalisers; holographic gratings; liquid crystal devices; optical attenuators; optical communication equipment; optical dispersion; polymer dispersed liquid crystals; spatial light modulators; C band; L band; dynamic gain equalization; dynamic spectral equalizer; flattening; free-space dispersive optics; free-space wavelength-demultiplexing optics; high dispersive capabilities; metropolitan network functionalities; polarization independent PDLC SLM; polymer-dispersed liquid-crystal spatial light attenuator; volume phase hologram; wide-spectral-range quasi-continuous variable-gain attenuation; Bragg gratings; Dispersion; Equalizers; Holographic optical components; Holography; Liquid crystal polymers; Optical attenuators; Optical filters; Optical polymers; Optical scattering;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2003.815503
