Design and Optimization of Photonic Crystal Triplexer for Optical Networks
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.
Keywords: Cavity, Photonic Crystal, Triplexer
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ABOUT THE AUTHORS
Mohammad Reza Rakhshani
Mohammad Reza Rakhshani has received his B.Sc. degree in electrical engineering from University of Sistan and Baluchestan, Zahedan, Iran in 2010. He has started his M.Sc. study at University of Sistan and Baluchestan, since October 2010. His research interests include numerical electromagnetic, photonic bandgap structures and applications of photonic crystals in integrated circuit.
Mohammad Ali Mansouri-Birjandi
Mohammad Ali Mansouri-Birjandi received his BSc and MSc degrees in electrical engineering from the University of Sistan and Baluchestan, Iran and the University of Tehran, Iran in 1986 and 1991, respectively. He then joined the University of Sistan and Baluchestan, Iran. In 2008, he obtained his PhD degree in electrical engineering from Trabiat Modares University, Iran.As an assistant professor at the University of Sistan and Baluchestan, his research areas are photonics, optoelectronics, analog integrated circuits, and metamaterial. Dr. Mansouri has served as a reviewer for a number of journals and conferences.
Mohammad Reza Rakhshani
Mohammad Reza Rakhshani has received his B.Sc. degree in electrical engineering from University of Sistan and Baluchestan, Zahedan, Iran in 2010. He has started his M.Sc. study at University of Sistan and Baluchestan, since October 2010. His research interests include numerical electromagnetic, photonic bandgap structures and applications of photonic crystals in integrated circuit.
Mohammad Ali Mansouri-Birjandi
Mohammad Ali Mansouri-Birjandi received his BSc and MSc degrees in electrical engineering from the University of Sistan and Baluchestan, Iran and the University of Tehran, Iran in 1986 and 1991, respectively. He then joined the University of Sistan and Baluchestan, Iran. In 2008, he obtained his PhD degree in electrical engineering from Trabiat Modares University, Iran.As an assistant professor at the University of Sistan and Baluchestan, his research areas are photonics, optoelectronics, analog integrated circuits, and metamaterial. Dr. Mansouri has served as a reviewer for a number of journals and conferences.
