We describe experimental and theoretical results of research on a new type of waveguide, the so-called grating-mediated waveguide (GMW) recently reported by our group. This waveguide structure relies on Bragg diffractions from a 1D grating giving rise to wave guiding in the direction normal to the grating wave vector. The structure consists of a shallow 1D grating having a bell- or trough-shaped amplitude in the confinement direction. We provide the theoretical analysis of the underlying wave-guiding mechanism along with experimental evidence for both the bell- and the trough-shaped waveguides. We investigate the robustness of grating-mediated wave guiding and suggest more elaborate, 2D structures, such as a GMW superlattice and a grating-mediated ring waveguide. Finally we discuss the relation between grating-mediated wave guiding and holographic solitons, which are the beams that are self-trapped solely by virtue of their jointly induced grating.
© 2005 Optical Society of AmericaFull Article | PDF Article
OSA Recommended Articles
Jason W. Fleischer, Guy Bartal, Oren Cohen, Tal Schwartz, Ofer Manela, Barak Freedman, Mordechai Segev, Hrvoje Buljan, and Nikolaos K. Efremidis
Opt. Express 13(6) 1780-1796 (2005)
H. Grebel and W. Zhong
Opt. Lett. 18(14) 1123-1125 (1993)
Adv. Opt. Photon. 1(3) 484-588 (2009)