Design of Photonic Crystal Polarization Splitter on InP Substrate
الموضوعات : فصلنامه نانوساختارهای اپتوالکترونیکیMahmoud Nikoufard 1 , Masoud Kazemi Alamouti 2
1 - Department of Electronics, University of Kashan
2 - Department of Electronics, University of Kashan
الکلمات المفتاحية: Photonic Crystal, directional coupler, polarization splitter, InP materials,
ملخص المقالة :
In this article, we suggested a novel design of polarization splitter based on coupler waveguide on InP substrate at 1.55mm wavelength. Photonic crystal structure is consisted of two dimensional (2D) air holes embedded in InP/InGaAsP material with an effective refractive index of 3.2634 which is arranged in a hexagonal lattice. The photonic band gap (PBG) of this structure is determined using the plane wave expansion (PWE) method by RSOFT Bandsolve software. Band diagram also show an overlap of two photonic bandgaps for both TE and TM about 1.55 mm wavelength. Also, the band structure is calculated for a lattice constant of 625 nm and a radius of 266.6 nm. The proposed polarization splitter has a transmission spectral of 75% and 70% for the TE and TM polarized light, respectively. The proposed polarization splitter is realized in a standard semiconductor technology on InP substrate at 1.55 µm wavelength and can be easily monolithically integrated with other planar integrated circuits.
[1] Y. Morita, Y. Tsuji, and K. Hirayama: Proposal for a Compact Resonant-Coupling-Type Polarization Splitter Based on Photonic Crystal Waveguide With Absolute Photonic Bandgap IEEE PHOTONIC TECH, 20 (2008) 93-95.
[2] A. A. M. Kok, E. J. Geluk, F. Karouta, J. van der Tol, R. Baets, and M. K. Smit,s short polarization filter in pillar-based photonic crystals. IEEE PHOTONIC TECH L, 20 (2008) 1369-1371.
[3] Kh. Bayat, G. Z. Rafi, G. S. A. Shaker, N. Ranjkesh, S. K. Chaudhuri, and S. Safavi-Naeini, Photonic-crystal-based polarization converter for terahertz integrated circuit. IEEE T MICROW THEORY, 58 (2010) 1976-1984.
[4] M. K. Smit, X. J. M. Leijtens, E. A. J. M. Bente, J. J. G. M. van der Tol, H. P. M. M. Ambrosius, D. J. Robbins, M. Wale, N & Schell Grote, Generic foundry model for InP-based photonics IET OPTOELECTRON, 5 (2011) 187-194.
[5] Y. R. Zhen, and L. M. Li, a novel application of two – dimensional photonic crystals :polarization beam splitter, J PHYS D APPL PHYS, 38 (2005) 3391-3394.
[6] W. S. Zaoui, S. Klinger, W. Vogel, and M. Berroth, Proc. of 6th Joint Symp on Opto- and Microelectronic Devices and Circuits, Berlin, Germany (2010) 75-78.
[7] L. Wu, M. Mazilu, J. –F. Gallet, T. F. Krauss, A. Jugessur, and R. M. De La Rue, planar photonic crystal polarization splitter, OPT LETT 29 (2004) 1620-1622.
[8] V. Zabelin, L. A. Dunbar, N. le Thomas, R. Houdre, M. V. Kotlyar, L. O'Faolain, and T. F. Krauss , self-collimating photonic crystal polarization beam splitter OPT LETT, 32 (2007) 530-532.
[9] Y. Kalara, and R. K. Sinha, design of ultra compact polarization splitter based on the complete photonic band gap, OPT QUANT ELECTRON, 37 (2005) 889-895.
[10] Y. Morita, Y. Tsuji, and K. Hirayama, proposal for a compact resonant –coupling – type polarization splitter based on photonic crystal waveguide with absolute photonic bandgap, IEEE Photonic Tech. L, 20 (2008) 93-95.
[11] Rsoft, user's manual, 2010.
