期刊名称：International Journal of Computer Science Issues
印刷版ISSN：1694-0784
电子版ISSN：1694-0814
出版年度：2012
卷号：9
期号：4
出版社：IJCSI Press
摘要：In this paper, we have proposed an all-optical wavelength triplexer using photonic crystal resonant cavities. The photonic crystal rods is composed of three layers, InP-InGaAsP-InP, the substrate consists of InP with a refractive index of nInP=3.169 and the guiding layer is InGaAsP, with an index of nInGaAsP=3.364. The guiding layer is 0.510m thick, and it has an InP top cladding of 1.500m. The photonic crystal is created with a hexagonal lattice with r/a=0.18 which r is a radius of rods and a is lattice constant. In this structure, three cavities are used, which can separate three communication wavelengths, 1.31, 1.49 and 1.55m. The average output efficiency of the proposed triplexer by using finite-difference time-domain (FDTD) method is above 97%. The footprint of the proposed structure is about 144m2, thus this structure is suitable for integration. Also, the crosstalk, which is critical factor in triplexer devices, is between #8722;26.81dB ~ #8722;13.80dB.
