18 November 2008 Wavelength interleaver in a two-dimensional rod-type photonic crystal
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Proceedings Volume 7135, Optoelectronic Materials and Devices III; 71353L (2008) https://doi.org/10.1117/12.803242
Event: Asia-Pacific Optical Communications, 2008, Hangzhou, China
A theoretical model of wavelength interleaver, which is based on an asymmetric Mach-Zehnder interferometer (AMZI) constructed in a two-dimensional photonic crystal (2D PhC), is proposed and numerically demonstrated. The 2D PhC consists of a square lattice of dielectric cylindrical rods in air. The AMZI includes two mirrors and two splitters. Light propagates between them employing self-collimation effect. The two interferometer branches have different path lengths. By using the finite-difference time-domain method, the calculation results show that the transmission spectra at two AMZI output ports are in the shape of sinusoidal curves and have a uniform peak spacing in the frequency range from 0.191c/a to 0.200c/a. When the path length of the longer branch is increased and the shorter one is fixed, the peaks shift to the lower frequencies and the peak spacing decreases nonlinearly. Consequently, the transmission can be designed to meet various application demands by changing the length difference between the two branches. For the dimensions of the wavelength interleaver are about tens of central wavelengths, it may be applied in future photonic integrated circuits.
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Bo Ni, Bo Ni, Hui Li, Hui Li, Yishen Qiu, Yishen Qiu, Junzhen Jiang, Junzhen Jiang, Yufei Wang, Yufei Wang, Guimin Lin, Guimin Lin, Jibo Bai, Jibo Bai, Hailian Hong, Hailian Hong, Xiyao Chen, Xiyao Chen, "Wavelength interleaver in a two-dimensional rod-type photonic crystal", Proc. SPIE 7135, Optoelectronic Materials and Devices III, 71353L (18 November 2008); doi: 10.1117/12.803242; https://doi.org/10.1117/12.803242

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