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.
© 2004 Optical Society of America
(060.2340) Fiber optics and optical communications : Fiber optics components
(090.2890) Holography : Holographic optical elements
(090.2900) Holography : Optical storage materials
(090.7330) Holography : Volume gratings
Jean-Luc Kaiser, Raymond Chevallier, Jean-Louis de Bougrenet de la Tocnaye, Hayqing Xianyu, and Gregory Philip Crawford, "Chirped Switchable Reflection Grating in Holographic Polymer-Dispersed Liquid Crystal for Spectral Flattening in Free-Space Optical Communication Systems," Appl. Opt. 43, 5996-6000 (2004)