An electro-optically tunable Bragg reflector based on liquid crystals

G. Gilardi, R. Asquini, A. d'Alessandro and G. Assanto

Mol. Cryst. Liq. Cryst. 549 (1), 62-8 (2011)


In this paper we report the analysis of a distributed feedback guided-wave reflector in liquid crystals and we describe the main properties of the device. The device is based on a comb-shaped interdigitated electrodes and a liquid crystal slab. The device shows a wide tuning range exceeding 100 nm covering C and L bands for wavelength division multiplexing.