Tarek Abdel Azzem Mohamed Ramadan
Professor at Electronics Engineering and Electrical Communications
Career Information
Academic Information
Brief
Areas of Research
Optical Communications and Integrated Optics: Analytical and numerical techniques for the analysis of optical wave propagation. Modeling, simulation, characterization, and fabrication of guided-wave photonic devices.
Awards
Included in the twenty second edition of Who’s Who in the world.
Articles
[1] N. Anous, M. Abdallah, T. Ramadan, K. Qaraqe, and D. Khaili, “Angle-tolerant hybrid plasmonic filters for visible light communications,” Appl. Opt., vol. 56, C106-C116, 2017.
[2] A. Afifi, A. El-Damak, T.A. Ramadan, M. Ahmed, “Fiber optical coherence domain polarimetry for PM fiber measurements,” J. Lightwave Technol., vol. PP, no. 99, pp.1-1, 2016.
[3] T.A. Ramadan, “A design of a vertical multimode interference coupler with an ultra-wide bandwidth,” IEEE Photon. Technol. Lett., vol. 28, No.23, pp. 2669-2672, 2016.
[4] T.A. Ramadan, “A novel design of a wideband digital vertical multimode interference coupler,” J. Lightwave Technol., vol. 34, No.17, pp. 4015-4022, 2016.
[5] T.A. Ramadan, “Modal spectrum engineering of multilayer optical waveguides: towards digital vertical multimode interference couplers,” Opt. Quant. Electron., vol. 48, no.3, 191, 2016.
[6] T.A. Ramadan, “Analog-to-digital optical waveguide conversion at sampling periods greater than the free-space wavelength,” J. Opt. Soc. Am. A, vol. 31, no.1, pp. 35-40, 2014.
[7] T.A. Ramadan, “A search-and-track algorithm for controlling the number of guided modes of planar optical waveguides with arbitrary refractive index profiles,” Opt. Quant. Electron., vol. 43, no.4, pp. 175-189, 2012.
[8] T.A. Ramadan, “A new algorithm for the design of uniform and nonuniform arrays of coupled optical waveguides,” Int. J. Phys. Sciences, vol. 5, no.7, pp. 1200-1211, 2010.
[9] T.A. Ramadan, “Sturm-Sequence Properties of Recurrence Dispersion Functions of Periodic Waveguide Arrays: Theory and Applications,” J. Lightwave Technol., vol. 27, no. 20, pp. 4548-4562, 2009.
[10] T.A. Ramadan, “A recurrence technique for computing the effective indexes of the guided modes of coupled single-mode waveguides,” Progress In Electromagnetics Research M, vol. 4, pp. 33- 46, 2008.
[11] T.A. Ramadan, “Expanding the core: A new approach for the design of single mode waveguides,” J. Lightwave Technol., vol. 23, pp. 3843- 3856, 2005.
[12] T.A. Ramadan, “Single-mode waveguides with better combinations of modal size and modal power confinement,” IEEE Photon. Technol. Lett., vol. 17, pp. 2095-2097, 2005.
[13] T.A. Ramadan, "Cross-orthogonality between guided and radiation modes at optical waveguide discontinuities,” J. Lightwave Technol., vol. 21, pp.1394-1404, 2003.
[14] T.A. Ramadan and R.W. Cohn, “Pseudoreversibility condition for minimizing radiation loss at discontinuities of coupled waveguides,” IEEE Photon. Technol. Lett., vol. 15, pp. 63-65, 2003.
[15] T.A. Ramadan, R. Scarmozzino, and R.M. Osgood, Jr., "A novel 1x4 coupler-multiplexer permutation switch for WDM applications,” J. Lightwave Technol., vol. 18, pp.579-588, 2000.
[16] T.A. Ramadan, M. Levy, and R.M. Osgood, Jr., "Electro-optic modulation in crystal-ion-sliced z-cut LiNbO3 thin films,” Appl. Phys. Lett., vol. 76, No. 11, pp.1407-1409, 2000.
[17] T.A. Ramadan, R. Scarmozzino, and R.M. Osgood, Jr., "Adiabatic couplers: Design rules and optimization,” J. Lightwave Technol., vol. 16, pp.227-238, 1998.
Publications
[1] T.A. Ramadan, “Digital NxN Multimode interference couplers” NRSC, Cairo, Egypt, March 13-16, 2017.
[2] T.A. Ramadan, “A novel wideband digital vertical multimode interference coupler,” IEEE Optical Interconnects Conference (OI), San Diego, California, USA, May 9-11, 2016.
[3] T.A. Ramadan, “A search-and-track algorithm for controlling the number of guided modes of planar optical waveguides with arbitrary refractive index profiles,” NRSC, Cairo, Egypt, April 26-28, 2011.
[4] T.A. Ramadan, “Maximization of phase and group birefringence of single-mode silicon-on-insulator waveguides,” FiO, San Jose, California, October 11-15, 2009.
[5] T.A. Ramadan, “A recurrence technique for computing the effective indexes of the guided modes of coupled single-mode waveguides,” ASAT-12, Cairo, Egypt, May 29-31, 2007.
[6] T.A. Ramadan, “Single-transverse-mode bipolar cascade lasers with thick quantum wells and no optical confinement layers,” MMS, Budapest, Hungary, May 14-16, 2007.
[7] T.A. Ramadan, “High-power expanded-core-waveguide edge-emitting bipolar cascade lasers,” CLEO, Long Beach, California, May 21-26, 2006.
[8] T.A. Ramadan, “A more tolerant design of 3-dB adiabatic couplers,” NRSC, Cairo, Egypt, March 16-18, 2004.
[9] T.A. Ramadan, "An efficient approach to minimize radiation loss at index discontinuities of optical waveguides,” NRSC, Cairo, Egypt, March 18-20, 2003.
[10] T.A. Ramadan, "The Design of Grating Couplers with ultra-low radiation loss,” LEOS, Glasgow, Scotland, Nov 10-14, 2002.
[11] T.A. Ramadan, M. Levy, and R.M. Osgood,Jr., "Electro-optic modulation in single-crystal LiNbO3 thin films,” CLEO, San Francisco, California, May 7-12, 2000.