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Photonic crystal waveguide-based Mach-Zehnder demultiplexer
1State Key Laboratory of Optoelectronic Materials and Technologies, Institute of Optoelectronic and Functional Composite Materials, School of Physics and Engineering, Sun Yat-Sen University, Guangzhou 510275, China.
Abstract:
A Mach-Zehnder demultiplexer with two different waveguide arms is proposed and studied theoretically in photonic crystal. The two waveguide arms with different widths function as a phase shifter. The operating wavelength spacing depends on the length of the two waveguide arms. The photonic bandgap is calculated by the plane-wave expansion method, and the device is simulated by the finite-difference time-domain method.
