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Updated: Aug 20, 2026
Fabrication of High Contrast Gratings for the Spectrum Splitting Dispersive Element in a Concentrated Photovoltaic System
Published on: July 18, 2015
Chirped switchable reflection grating in holographic polymer-dispersed liquid crystal for spectral flattening in
Jean-Luc Kaiser1, Raymond Chevallier, Jean-Louis de Bougrenet de la Tocnaye
1Groupe 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
Abstract:
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.
