•Robert Farha, Qin Zou, Yaneck Gottesman et Badr-Eddine Benkelfat. «Etudes de nouvelles configurations à cristal photonique bidimensionnel sur LiNbO3», Optique Grenoble 2007, HORIZONS, Grenoble, France, 2-5 Juillet, 2007, pp 133-134.•Robert Farha, Qin Zou et Badr-Eddine Benkelfat. «Novel laterally over-modulated (LOM) photonic crystal designs in Er:Ti:LiNbO3 waveguides», 2 nd IEEE Lebanon Communications Workshop (IEEE LCW’2008), Beirut, Lebanon, May 2008.•Robert Farha, Qin Zou et Badr-Eddine Benkelfat. «Sur- modulation latérale d’une structure de niobate de lithium active a cristal photonique bidimensionnel », jnog Lannion 2008, France, 20-22 Octobre, 2008.•Rachid Hamdi, Robert Farha Badr-Eddine Benkelfat. «Liquid-Crystal Birefringent Filter-Based Wavelength Blocker/Channel Equalizer for reconfigurable optical Networks », ACTEA 2009, NDU, Lebanon, 14-17 July, 2009.•Rachid Hamdi, Robert Farha, Salah Redadaa, Badr-Eddine Benkelfat, Djamel Abed, Abderrazak Hallassi, Yassin Boumakh. « Optical Bandpass Lyot Filter with Tunable Bandwidth », ICT 2012 19th International Conference on Telecommunications, USEK, Kaslik, Lebanon, 23-25 April, 2012.•Robert Farha, Kamal Ghoumid, Qin Zou and Badr-Eddine Benkelfat. « Analysis of a novel Photonic-crystal LOM structure engraved in a Ti:Er:LiNbO3 waveguide for 1.55 µm emission », J.Opt. 14 075501 doi:10.1088/2040-8978/14/7/075501, Journal of Optics 2012. •E. A. Rachid, R. M. Farha, 2016 IEEE CAMA Paper #1004 Ultra-Wideband: Very Simple Printed Antennas with Windows in K, Ka and Q BandsPEER-REVIEWED JOURNAL•Journal of Physics D: Applied Physics•Materials Research Express•Chinese Optics Letters•IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE) (APACE 2019)•American Journal of Science, Engineering and Technology•Optics and Photonics Journal (OPJ)•Engineering Research Express•2016 IEEE Asia-Pacific Conference on Applied Electromagnetics