Institute of High Performance Computing

• Directors
• Computing Science (CS)
• Electronics & Photonics (EP)
• Engineering Mechanics (EM)
• Fluid Dynamics (FD)
• Material Science & Engineering (MSE)
• IHPC Independent Investigatorship (I³)

Electronics & Photonics (EP)

Dr. Iftikhar AHMED

• Title: Scientist
• Tel: 64191556
• Email: iahmed@ihpc.a-star.edu.sg

Research Interests:

Computational Electromagnetics Computational Electromagnetics for Plasmonics, Nanophotonics and Nanodevices Computational Electromagnetics for RF/Microwave/Nanodevices Coupling of Maxwell and Schrodinger Equatio

Qualifications:

• Ph.D., Electrical Engineering, Dalhousie University Halifax, Canada, 2006
• M.Sc., Electrical Engineering, University of Engineering and Technology Lahore,�1999
• B.Sc., Electrical Engineering, University of Engineering and Technology Taxila, Pakistan, 1995
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Published Journals/ Articles:

Journals

• I. Ahmed and E. P. Li, "Simulation of Plasmonics Nanodevices using Coupled Maxwell and Schr�dinger Equations using the FDTD Method", Journal Advanced Electromagnetic, Vol.1, No.1, 2012
• K. H. Lee, I. Ahmed , R. S. M. Goh, E. H. Khoo, E. P. Li, and T. G. G. Hung, " Implementation of the FDTD method based on lorentz-drude dispersive model on GPU for plasmonics applications" Progress in Electromagnetics Research, Vol. 116, pp. 441-456, 2011
• O. Kurniawan, I. Ahmed and E. P. Li, "Generation of surface plasmon polariton using plasmonic resonant cavity based on microdisk laser", IEEE Photonics Journal , Vol. 3, pp. 344-352, 2011
• �I. Ahmed, E. H. Khoo, O. Kurniawan and E. P. Li "Modeling and simulation of active plasmonics with the FDTD method by using solid state and Lorentz-Drude dispersive model" , Journal of Optical Society America B (JOSA B), Vol. 28, pp.352-359, 2011
• �I. Ahmed, E. H. Khoo, E. P. Li and R. Mittra, "A Hybrid approach for solving coupled Maxwell and Schrodinger equations arising in the simulation of nano-devices", IEEE Antenna and Wireless Propagation Letters, Vol. 9, pp.914-917,2010
• �I. Ahmed, E. K. Chua, and E. P. Li, "Numerical dispersion analysis of the unconditionally stable three-dimensional LOD-FDTD method, IEEE Transaction on Antenna and Propagations, Vol. 58, No. 12, pp. 3983-3989, 2010
• �I. Ahmed, E. H. Khoo, and E. P. Li "Development of the CPML for three-dimensional unconditionally stable LOD-FDTD method, IEEE Transaction on Antenna and Propagations Vol. 58 No. 3, 2010
• �E. H. Khoo, S. T. Ho, I. Ahmed, E. P Li, and Y. Huang, "Light energy extraction from the minor surface arc of an electrically pumped elliptical microcavity Laser", IEEE Journal of Quantum Electronics VOL. 46, NO. 1, 2010
• �E. H. Khoo, I. Ahmed, and E. P. Li, "Enhancement of light energy extraction from elliptical microcavity using external magnetic field for switching applications", Appl. Phys. Lett. 95, 121104, 2009 (Cover Page)
• �E. H. Khoo, P. Bai, M. X. Gu, H. S. Chu, W. B. Ewe, I. Ahmed and E. P. Li, Advanced Materials Research, vol. 74, pp. 13-16, 2009
• �I. Ahmed, C. E. Png, E.P. Li, and R.Vahldieck, "Electromagnetic propagation in a novel Ag nanoparticle based plasmonic structure", Optics Express, Vol. 17, No.1, 2009
• �I. Ahmed, E. K. Chua, E. P. Li and Z. Chen, "Development of the three-dimensional unconditionally stable LOD-FDTD method", IEEE Transaction on Antennas Propagations, Vol. 56, No.11, 2008
• �I. Ahmed and E. P. Li, "Convolutional PML for weakly conditionally stable hybrid implicit and explicit-FDTD method", Microwave and Optical Technology Letters, vol. 49, no. 12, PP. 3106-3109, 2007
• �I. Ahmed, E. P. Li and K. Krohne, "Convolutional perfectly matched layer for an unconditionally stable LOD-FDTD method", IEEE Microwave and Wireless Component letters, Vol. 17, No. 12, PP. 816-818, 2007
• �E. P. Li, I. Ahmed, and R.Vahldieck, "Numerical dispersion analysis with an improved LOD-FDTD method", IEEE Microwave and Wireless Component letters, Vol. 17, No.5, PP. 319-321, 2007
• �I. Ahmed and Z. Chen, "Accuracy improved ADI-FDTD methods" International Journal of Numerical Modeling, Electronic networks, Devices and Fields, Vol. 20, PP. 35-46, 2006
• �I. Ahmed and Z. Chen, "Error reduced ADI-FDTD methods", IEEE Antennas and Wireless Propagation Letters, Vol. 4, PP. 323 – 325, 2005
• �I. Ahmed and Z. Chen, "A hybrid ADI-FDTD subgridding scheme for efficient electromagnetic computation", International Journal of Numerical Modeling, Electronic networks, Devices and Fields, vol.17, pp.237-249, 2004

Conferences

 

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I. Ahmed, E. H. Khoo and E. P. Li, “Simulation of Active Microdisk Antenna using Solid State and Dispersive Models”, Asia Pacific Conference on Antenna Propagations, Singapore 2012
I. Ahmed, E. H. Khoo and E. P. Li, “Coupled Maxwell and Schrodinger approach for simulation of� Nano-devices”, IEEE RF Nanotechnology Symposium, Singapore 2012
E. H. Khoo, I. Ahmed and E. P. Li, “Switching Optical Forces using Plasmonics Vortex”, IEEE RF Nanotechnology Symposium, Singapore 2012
I. Ahmed and E. P. Li, “ Time domain simulation: nano-electronics to nano-photonics” , APEMC 2012, Singapore
E. H. Khoo, I. Ahmed and E. P. Li, “Manipulating Forces in Optical Vortex using Plasmonic Perturbation Bumps”, SPIE 2012, USA
I. Ahmed and E. P. Li, “Simulation of plasmonics nanodevices using coupled Maxwell and Schrodinger equations”, AES 2012, Paris, France
J. J. Tan, I. Ahmed, K. H. Lee, R. S.� M. Goh, E.P. Li, T. G. G. Hung, “Simulation of the Schr�dinger Equation using FDTD on GPU”, accepted,� ACES 2012, Ohio, USA
�I. Ahmed and E. P. Li, “A new approach for the modeling and simulation of nanostructures” workshop on novel devices and advanced modeling techniques in RF nanoelectronics,� European Microwave/European Microwave Integrated Circuits Conference 2011, Manchester, UK
E. P. Li, B. Ping, I. Ahmed and H. S. Chu, “ Multiphysics modeling of plasmonics devices”, XXX URSI General Assembly and Scientific Symposium of International Union of Radio Science 2011, Istanbul, Turkey
I. Ahmed, and E. P. Li, “Time domain simulation of dispersive materials from microwave to optical frequencies”, IEEE International Conference on Emerging Technologies 2011, Islamabad, Pakistan
I. Ahmed, E. P. Li and Q. H. Liu , “A novel FDTD approach for the simulation of nanodevices”, CEM 2011, Poland
O. K. Kurniawan, I. Ahmed and E. P. Li, “ Surface plasmon hybridization of whispering gallery mode microdisk laser”, IEEE Photonics Global 2010 Singapore
I. Ahmed and E.P. Li, “An hybrid FDTD and ADI-FDTD technique for coupled Maxwell’s and Schrodinger’s equations”, IEEE APS, Canada, 2010
E. H. Khoo, I. Ahmed, E. P. Li, " Investigation of the light energy extraction efficiency using surface plasmonics in electrically pumped semiconductor microcavity”,� SPIE, USA,2010
I. Ahmed, E. H. Khoo, O. Kurniawan and E. P. Li, “Development of a FDTD approach for the simulation of active plasmonics devices”, ACES, Finland, 2010
E. P. Li, and I. Ahmed, “Development of Fflters for plasmonics applications”, ACES, Finland, 2010
F. O.X. Li, B. Liu, Y. Huang, E. H. Khoo, E. P.� Li, I. Ahmed, Q. Wang, and S. T. Ho, “Radial-waveguide-coupled micro-resonator lasers with unidirectional output, FIO-LS, 2009, USA
I. Ahmed, E. P. Li, and E. H. Khoo, “Interactions between magnetic and non-magnetic materials for plasmonics applications” , International Conference on Materials and Advanced Technologies, Singapore, 2009
E. H. Khoo, E. P Li, S. T. Ho, and I. Ahmed, "Enhancement in the efficiency of light extraction from semiconductor laser microcavity with plasmonics effect" International Conference on Materials and Advanced Technologies, Singapore, 2009
I. Ahmed, E. P. Li, and E. H. Khoo, “Coupling of Maxwell’s and Schrodinger’s equations for plasmonics applications”, Nanometa, 2009, Austria
E. H. Khoo, E.P. Li, I. Ahmed and S.T. Ho “Effects of magnetic field on charge distribution in an electrically pumped elliptical microcavity laser”, IEEE CLEO/IQEC, May 31- June 5, 2009, Baltimore, USA
E. H. Khoo, S.T. Ho, I. Ahmed, Y. Huang and E.P. Li,� “Light tunneling from the minor surface section of the elliptical microcavity”, IEEE Photonics Global Singapore, December, 2008
E. H. Khoo, S.T. Ho, I. Ahmed, E. P. Li and Y. Huang, “3D modeling of photonic devices using dynamic thermal electron quantum medium finite-different time-domain (DTEQM-FDTD) method” IEEE LEOS, Freiburg, Germany, August 2008
I. Ahmed and E.P. Li, “ Development of the CE LOD-FDTD method for efficient electromagnetic computation”, IEEE Antenna and Propagation Symposium, San Diego, USA, July 2008
I. Ahmed and E. P. Li, “ADI-FDTD approach for coupled Schrodinger and Maxwell’s equations for nanoscale devices simulation”, In the proceeding of IEEE Conference on Electromagnetic Field Computation, Athens, Greece, May 2008
I. Ahmed and E.P. Li, “ Simulation of nanostrips based plasmonics filters by using FDTD method”, In the proceeding of IEEE Conference on Electromagnetic Field Computation, Athens, Greece, May 2008
H. S. Chu, I. Ahmed, W. B. Ewe and E. P. Li, Guiding light in different plasmonic nano-slot waveguides for nano-interconnect application, “, Asia Pacific EMC Symposium, Singapore, May 2008
I. Ahmed, E.K. Chua and E. P. Li “The stability analysis of the three dimensional LOD-FDTD method”, Asia Pacific EMC Symposium, Singapore, May 2008
I. Ahmed, E. P. Li and Z. Chen, “The optimized weakly�� conditionally stable (WCS) FDTD method”, IEEE International Microwave Symposium, Atlanta, USA, June 2008
I. Ahmed, E.P. Li and Z. Chen, “Development of the unconditionally stable error reduced LOD-FDTD method”, Applied Computational Electromagnetic Symposium, Niagara Falls, Canada, April 2008
I. Ahmed, H.S. Chu, W. B. Ewe and E.P. Li, “Modeling and Simulation of Nano-Interconnects for Nanophotonics”, 9th Electronics Packaging Technology Conference, Singapore, December 2007
I. Ahmed, C. E. PNG, E.P. Li and H.P.Lee,” Electromagnetic� Waveguiding in metallic Plasmonics Structures using FDTD”, IEEE International Conference on Nanotechnology, Hong Kong, July 2007
I. Ahmed and E. P. Li, “Development and Implementation of LOD-CPML for efficient electromagnetic simulations”, IEEE Symposium Antenna and Propagations, Hawaii, USA, June 2007
I. Ahmed and E. P. Li, “The error reduced ADI-CPML method for EMC simulation”, IEEE Symposium for Electromagnetic Compatibility, Hawaii, USA, July 2007
I. Ahmed and Z. Chen, “Progress in ADI-FDTD method” International Symposium on Antenna and Propagations, Singapore, November 2006
I. Ahmed and Z. Chen “Dispersion-error optimized ADI-FDTD” IEEE Microwave Theory and Techniques Symposium, San Francisco, USA , June, 2006
I. Ahmed and Z. Chen, “Splitting error reductions for the ADI-FDTD method”, CEM-TD 2005 Atlanta, GA, U.S.A., PP. September 2005
I. Ahmed and Z. Chen, “Applications of the hybrid FDTD and ADI-FDTD method for planar structures”, IEEE Antennas and Propagation Society International Symposium, Volume 4, July, 2005
Z. Chen and I. Ahmed, “3D hybrid ADI-FDTD/FDTD subgridding scheme applied to RF/microwave and optical structures”, IEEE Antennas and Propagation Society Symposium, Vol. 2, PP. 1684 – 1687, June 2004
Z. Chen and If. Ahmed, “A hybrid FDTD and ADI-FDTD scheme and its comparison with FDTD”, Antennas and Propagation Society International Symposium. IEEE, Volume: 4, pp. 360-363, USA, 2003
I. Ahmed and Z. Chen, “Development of a hybrid ADI-FDTD scheme for efficient electromagnetic computation”, CEM, Halifax NS, Canada, June 2003
I. Ahmed and Z. Chen, “A hybrid FDTD and ADI-FDTD scheme for RF/ microwave structure simulation”, 19th Annual Review of Progress in Applied Computational Electromagnetics, Monterey, CA, USA, pp.408-412, March 2003

Other(s)

AWARDS

Faculty of Engineering Scholarship, Dalhousie University2003 - 2005

Graduate Scholarship, Dalhousie University2002 - 2004

Bruce and Dorothy Rosetti Engineering Research Scholarship, Dalhousie University2003 - 2004

Bruce and Dorothy Rosetti Engineering Research Scholarship, Dalhousie University 2002 - 2003