We report on a simple method to flatten the optical spectral response of a conventional Gaussian-like transfer function multiplexer and demultiplexer. Advantages and drawbacks of the technique are discussed, and an analytical formula that permits easy optical design is given.
© 2003 Optical Society of America
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(060.4230) Fiber optics and optical communications : Multiplexing
(230.0230) Optical devices : Optical devices
Bruno Chassagne and Vlady Ravelomanana, "Simple technique to widen the passband of a free-space optics multiplexer and demultiplexer," J. Opt. Soc. Am. B 20, 2270-2273 (2003)