We demonstrate a directional coupler that employs two waveguides induced by two mutually incoherent photorefractive solitons propagating in parallel at close proximity. Efficient coupling from one waveguide to the other is achieved for probe beams at wavelengths much longer than that of the solitons. We study the mutual coupling as a function of distance between solitons.
© 1999 Optical Society of America
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(160.5320) Materials : Photorefractive materials
(230.7370) Optical devices : Waveguides
Song Lan, Eugenio DelRe, Zhigang Chen, Ming-feng Shih, and Mordechai Segev, "Directional coupler with soliton-induced waveguides," Opt. Lett. 24, 475-477 (1999)