Chirped switchable reflection grating in holographic polymer-dispersed liquid crystal for spectral flattening in free-space optical communication systems.
We report the design and fabrication of a chirped switchable reflective grating (CSRG) recorded in a holographic polymer-dispersed liquid-crystal material. This CSRG is a spatial wavelength-selective flattener in a free-space dynamic gain equalizer for use in wavelength-division multiplexing (WDM) networks. Prelimenary experimental results show that this device permits the management of the spectral power of a WDM stream with an attenuation range of 6 dB. The polarization-dependent loss introduced by the CSRG is shown to be less than 0.1 dB.
Kaiser
Jean-Luc
JL
Groupe des Ecoles des Telecommunications/Department of Optics, Ecole Nationale Supérieure des Telécommunications de Bretagne, Technopôle de Brest Iroise, CS 83818, 29238 Brest, France. jl.Kaiser@enst-bretagne.fr
Chevallier
Raymond
R
de Bougrenet de la Tocnaye
Jean-Louis
JL
Xianyu
Hayqing
H
Crawford
Gregory Philip
GP