Title :
Experimental demonstration of an efficient unidirectional coupler for surface plasmons with wide-angle efficiency
Author :
Fan Lu ; Lin Sun ; Jia Wang ; Kun Li ; Anshi Xu
Author_Institution :
State Key Lab. of Adv. Opt. Commun. Syst. & Networks, Peking Univ., Beijing, China
Abstract :
We experimentally demonstrated a wide-angle unidirectional excitation of surface plasmon modes. Employing the plasmonic critical angle phenomenon in conjunction with the grating effect, a wide incident angular full-width-half-maximum (AFWHM=25°) with high unidirectionality of extinction ratios better than 10dB was realized.
Keywords :
diffraction gratings; optical directional couplers; surface plasmons; extinction ratios; grating effect; plasmonic critical angle phenomenon; surface plasmon modes; unidirectional coupler; wide incident angular full-width-half-maximum; wide-angle efficiency; wide-angle unidirectional excitation; Couplers; Couplings; Gratings; Optical surface waves; Photonics; Plasmons; Principal component analysis;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
