We demonstrate the use of a 30-period dielectric stack structure as a highly dispersive device to spatially separate two beams with a 4-nm wavelength difference by more than their beam width. Unlike previous devices, our structure is simple to fabricate and relatively compact. We discuss possible applications of our device within wavelength-division multiplexing systems.
© 2000 Optical Society of America
(060.4230) Fiber optics and optical communications : Multiplexing
(060.4510) Fiber optics and optical communications : Optical communications
(230.1480) Optical devices : Bragg reflectors
(230.4170) Optical devices : Multilayers
Bianca E. Nelson, Martina Gerken, David A. B. Miller, Rafael Piestun, Chien-Chung Lin, and James S. Harris, "Use of a dielectric stack as a one-dimensional photonic crystal for wavelength demultiplexing by beam shifting," Opt. Lett. 25, 1502-1504 (2000)