Tarek Abdel Azzem Mohamed Ramadan

Professor at Electronics and Communications Engineering

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. Tarek Ramadan, " A design of a vertical multimode interference coupler with an ultra-wide bandwidth ", photonics technology letters, 2016
2. Tarek Ramadan, " A novel design of a wideband digital vertical multimode interference coupler ", journal of lightwave technology, 2016
3. Ramadan, T.A., " Modal spectrum engineering of multilayer optical waveguides: towards digital vertical multimode interference couplers ", Optical and Quantum Electronics, 2016
4. Ramadan, T.A., " Analog-to-digital optical waveguide conversion at sampling periods greater than the free-space wavelength ", Journal of the Optical Society of America A: Optics and Image Science, and Vision, 2014
5. Ramadan, T.A., " A search-and-track algorithm for controlling the number of guided modes of planar optical waveguides with arbitrary refractive index profiles ", Optical and Quantum Electronics, 2012
6. Ramadan, T.A., " A search-and-track algorithm for controlling the number of guided modes of planar optical waveguides with arbitrary refractive index profiles ", National Radio Science Conference, NRSC, Proceedings, 2011
7. Ramadan, T.A., " A search-and-track algorithm for controlling the number of guided modes of planar optical waveguides with arbitrary refractive index profiles ", Applied Computational Electromagnetics Society Newsletter, 2011
8. Ramadan, T.A., " A new algorithm for the design of uniform and nonuniform arrays of coupled optical waveguides ", International Journal of Physical Sciences, 2010
9. Ramadan, T.A., " Maximization of phase and group birefringence of single-mode silicon-on-insulator waveguides ", Optics InfoBase Conference Papers, 2009
10. Ramadan, T.A., " Sturm-Sequence properties of recurrence dispersion functions of periodic waveguide arrays: Theory and applications ", Journal of Lightwave Technology, 2009
11. Ramadan, T.A., " High-power expanded-core-waveguide edge-emitting bipolar cascade lasers ", Optics InfoBase Conference Papers, 2006
12. Ramadan, T.A., " High-power expanded-core-waveguide edge-emitting bipolar cascade lasers ", Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006, 2006
13. Ramadan, T.A., " Expanding the core: A new approach for the design of single-mode waveguides ", Journal of Lightwave Technology, 2005
14. Ramadan, T.A., " Single-mode waveguides with better combinations of modal size and modal power confinement ", IEEE Photonics Technology Letters, 2005
15. Ramadan, T.A., " A more tolerant design of 3-dB adiabatic couplers ", National Radio Science Conference, NRSC, Proceedings, 2004
16. Ramadan, T.A., " An efficient approach to minimize radiation loss at index discontinuities of optical waveguides ", National Radio Science Conference, NRSC, Proceedings, 2003
17. Ramadan, T.A., " Cross-orthogonality between guided and radiation modes at optical waveguide discontinuities ", Journal of Lightwave Technology, 2003
18. Ramadan, T.A., Cohn, R.W., " Pseudoreversibility condition for minimizing radiation loss at discontinuities of coupled waveguides ", IEEE Photonics Technology Letters, 2003
19. Ramadan, T.A., " The design of grating couplers with ultra-low radiation loss ", Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS, 2002
20. Ramadan, T.A., Levy, M., Osgood Jr., R.M., " Electro-optic modulation in crystal-ion-sliced z-cut LiNbO3 thin films ", Applied Physics Letters, 2000
21. Ramadan, T.A., Levy, M., Osgood Jr., R.M., " Electro-optic modulation in single-crystal LiNbO3 thin films ", Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest, 2000
22. Ramadan, T.A., Scarmozzino, R., Osgood Jr., R.M., " Novel 1×4 coupler-multiplexer permutation switch for WDM applications ", Journal of Lightwave Technology, 2000
23. Ramadan, T.A., Scarmozzino, R., Osgood Jr., R.M., " Adiabatic couplers: Design rules and optimization ", Journal of Lightwave Technology, 1998