Wavelength interleaver in a two-dimensional rod-type photonic crystal
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.
photonic crystal self-collimation Mach-Zehnder interferometer wavelength interleaver
Bo Ni Hui Li Yishen Qiu Junzhen Jiang Yufei Wang Guimin Lin Jibo Bai Hailian Hong Xiyao Chen
School of Physics and Optoelectronics Technology,Fujian Normal Univ.,Fuzhou 350007,China School of Physics and Electromechanical Engineering,Longyan Univ.,Longyan 364012,China Dept.of Physics and Electronic Information Engineering,Minjiang Univ.,Fuzhou 350108,China;
国际会议
2008亚太光通信会议(Asia-Pacific Optical Communications 2008)
杭州
英文
2008-10-26（万方平台首次上网日期，不代表论文的发表时间）