A simple theoretical model of a Mach–Zehnder interferometer (MZI) consisting of two coupled-resonator optical waveguides with different lengths is proposed and experimentally demonstrated at microwave frequencies. Good agreement between theoretical and experimental results is observed. MZIs in planar photonic crystals may become key building blocks in the development of microscale optical integrated devices such as filters, demultiplexers, switches, and modulators.
© 2003 Optical Society of America
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.2790) Integrated optics : Guided waves
(130.3120) Integrated optics : Integrated optics devices
Alejandro Martinez, Amadeu Griol, Pablo Sanchis, and Javier Marti, "Mach Zehnder interferometer employing coupled-resonator optical waveguides," Opt. Lett. 28, 405-407 (2003)