THE CITY COLLEGE OF THE CITY UNIVERSITY OF NEW YORK

Prof. Mohamed A. Ali

Department of Electrical Engineering

City College of the City University of New York

Convent Avenue at 140th Street

New York, NY 10031

Tel: (212) 650-6737

Email: ali@ccny.cuny.edu

EDUCATION

• Ph.D., Electrical Engineering, City University of New York, 1989.

• M.S., Electrical Engineering, City College of New York, 1985.

• B.S., Electrical Engineering, Cairo, Egypt, 1981.

HONORS AND AWARDS

• Received NSF Faculty Early Career Development Award, 1995-1999. This is the most prestigious academic award and honor a faculty can ever achieve during the early stages of his career.

• Acted as a frequent reviewer for several IEEE journals and NSF.

• Chaired/committee member of technical sessions in several international telecom conferences, the IEEE GLOBECOMM'02 and ICC’02.

PROFESSIONAL EXPERIENCE

A. Industrial Experience

• June 99-Present: Consulted for several major carriers on issues related to the pros and cons of a router-centric architecture deployed on a thin optical layer versus a hybrid router/OXC-centric architecture deployed on a rich and intelligent optical transport layer. These studies included a detailed economical and technical analysis on the merits of a pure packet-switched network versus a hybrid, which packet switches only at the access point and circuit switches through the network. Currently conducting extensive work on modeling the Traffic Engineering problem in a Hybrid IP-Centric DWDM-Based Optical data Networking. This is being implemented through extending Multiprotocol Label Switching (MPLS)-based traffic engineering framework for provisioning and restoring switched lightpaths taking into account specific characteristics of optical networking elements and special requirements of switched lightpaths. Specifically, we are currently looking at the problem of modeling and implementing a unified control plane for provisioning, maintaining, and restoring switched lightpaths in a hybrid, IP/MPLS-centric DWDM-based optical network. We have been developing methodologies and associated algorithms for dynamic lightpath computation. Simple dynamic constraint-based routing and wavelength assignment (RWA) algorithms, connection management control algorithms, that are based on a fully distributed implementation, have been developed for real-time provisioning of optical channels.

• Sep. 99-Present: Currently conducting research work as a part of a regional Consortium that has received a $ 7.5 million contract from DARPA to develop key enabling technologies to make possible the Next Generation Internet (NGI). The consortium includes Lucent Technologies, Bell Atlantic, the City College of New York, Drexel University, Princeton University, and the University of Pennsylvania. The key questions that will be addressed by the architecture team, that is led by the City College of NY and Bell Atlantic, are: What new network architectures, networking methods, and underlying networking technologies and protocols will be required to successfully scale today’s tremendously successful Internet to meet the need of the 21st century, and how to support multimedia applications that contain very large information objects (e. g., videos and animations), and to provide the reliability and trustworthiness required by its users.  Specifically, we address the critical question of how does one ensure that the high-speed performance that can be provided by the physical layers of the NGI is actually experienced by end users applications?  How can we run NGI protocols directly over a DWDM substrate, while recapturing the network management functionality provided currently by the SONET layer? Do we need a new protocol to complement IP in order to efficiently support emerging multimedia applications and quality of service requirements?

• Sep. 94-Jan. 99:Conducted extensive work on DWDM Systems, Networking & Architecture jointly with the MONET Consortium under DARPA Grant F49620-941 and DARPA agreement MDA972-93-5. The Consortium included Bellcore (Red Bank NJ, currently Telcordia), Lucent Technologies (Crawfords Corner Road), and AT&T Labs-Research (Red Bank, NJ). This work has involved developing and demonstrating all of the critical elements (WDM components, subsystems, systems) necessary for the implementation of both DWDM-based long-haul point-to-point transport networks and survivable 2-fiber and 4-fiber DWDM Self-Healing Ring (SHR) networks.  A detailed analysis has also been carried out to the DWDM channel spacing & assignment considerations.

B. Academic Experience

• Sep. 98-Present: Professor (City College of New York, EE Dept)

• Jan. 94-Aug. 98: Associate Professor (City College of New York, EE Dept)

• 1989-1993: Assistant Professor (City College of New York, EE Dept)

PUBLICATIONS

1. Book Chapters:

[1] M. A. Ali and R. Kurtz “Optical networking capabilities for the Next-Generation Internet,” Chapter in a book entitled “Optical Switching/Networking and Computing for Multimedia Systems” edited by Mohsen Guizani, Marcel Dekker, INC, New York, May 2002.

[2] A. Shami, C. Assi and M. A. Ali “Dynamic wavelength provisioning in DWDM-based Optical Networks” Chapter in a book entitled “Towards an optical Internet” Edited by Admela Jukan, Kluwer Academic Publishers, Feb. 2002.

[3] C. Assi and M. A. Ali, “Real-time Provisioning of Optical Communication Networks”, Handbook of Optical Communication Networks, edited by Mohammad Ilyas; CRC Press, April 2003.

2. Referred Conferences and Journal Papers

[1] H. Chamas, W. Bjorkman, and M. A. Ali, “A Novel Admission Control Scheme for Ethernet Services,”Proceeding of IEEE ICC 2005,

[2] H. Chamas, W. Bjorkman, and M. A. Ali, “A Novel Admission Control System for Bandwidth on Demand Ethernet Services over Optical Transport Networks,” Optical Fiber communication Conference (OFC'2005), CA

[3] S. sherif, A. Hadjiantonis, G. Ellinas, and M. A. Ali, “A novel decentralized Ethernet-based EPON access architecture for provisioning differentiated QoS,” IEEE Journal of Lightwave Technology, Vol. 22, PP. 2483-2497, Nov. 2004.

[4] M. A. Ali, A. Hadjiantonis, A. Khalil, G. Ellinas and K. Bergman, “ Transportation & Switching of native Ethernet frames across  MPLS/GMPLS Managed and Controlled Optical data networks, “ (INVITED), Proceedings of the 17th IEEE/LEOS Annual meeting on Optical Networks and Systems, Puerto Rico, Nov 7-11 2004.

[5] A. Khalil, A. Hadjiantonis, G. Ellinas and M. A. Ali, “Sequential and Hybrid Grooming Approaches for Multicast Traffic in WDM Networks”, proceedings of IEEE Globecom, Dallas, USA, Nov. – Dec. 2004.

[6] A. Khalil, A. Hadjiantonis, G. Ellinas and M. A. Ali, “A Hybrid Provisioning Approach For Multicast Traffic Grooming in WDM Mesh Networks”, Proc. of the 30th European Conference on Optical Communication (ECOC), Stockholm, Sweden, Sept. 2004.

[7] A. Khalil, G. Ellinas and M. A. Ali, “On Dynamic Multicast Traffic Grooming in WDM Networks”, the 9th IEEE Symposium on Computers and Communications (ISCC), Alexandria, Egypt, June-July 2004.

[8] A. Hadjiantonis, A. Khalil, G. Ellinas and M. A. Ali, “A hybrid approach for provisioning sub-wavelength requests in IP-OVER-WDM Networks,” IEEE CCECE, Ontario Canada, May 2-5, 2004

[9] A. Hadjiantonis, T. Rahman, G. Ellinas, M. Arend and M. A. Ali, “A novel decentralized Ethernet-Based PON Architecture,” Proceedings of the IEEE ICC  2004, Paris, France, June 2004.

[10] C. Assi , Y. Ye , S. Dixit, and M. A. Ali, “Dynamic Bandwidth Allocation for Quality of Service Over Ethernet PONs”, IEEE Journal of Selected Areas in Communications (JSAC), Vol. 21, PP. 1467-1477, Nov. 2003

[11] C. Assi , Y. Ye , S. Dixit, and M. A. Ali, “Control and Management Protocols for Survivable Optical Mesh Networks”, IEEE Journal of Lightwave Technology, Vol. 21, PP. 2638-2651, Nov. 2003.

[12] A. Hadjiantonis, A. Khalil, , G. Ellinas, and M. A.  Ali, “A novel optical-layer based Resilience Scheme for the Next-Generation data networks,” (INVITED), Proceedings of the 16th IEEE/LEOS Annual meeting on Optical Networks and Systems, San Francisco, CA, Oct. 2003.

[13] A. Hadjiantonis, A. Khalil, and M. A.  Ali, “Interchanging the Search Space Between the Logical and Physical Layers in Future IP Optical Networks”, Proc. of The International Conference on Communication, Network, and Information Security (CNIS), New York, December 10-12, 2003.

[14] A. Khalil, A. Hadjiantonis, G. Ellinas, and M. A.  Ali, “A Novel IP-Over-Optical Network

Interconnection Model for the Next-Generation Optical Internet”, Proceeding of IEEE GLOBECOM 2003, San Francisco.

[15] A. Khalil, A. Hadjiantonis, G. Ellinas, and M. A.  Ali, “Optical layer-based unified control plane for emerging IP/MPLS over WDM networking architecture”, 29th European Conference on Optical Communication (ECOC ) 2003, Rimini, Italy.

[16] C. Assi, Y. Ye, A. Shami, S. Dixit and M. A. Ali, “Performance Evaluation of Efficient Path Selection and Fast Restoration Algorithms for Shared Restorable Mesh WDM Networks” Proc. of IEEE ICC 2003, Anchorage Alaska.

[17] A. Shami, C. Assi, I. Habib, and M. A. Ali "Connection Management Protocols for Dynamic Lightpath Provisioning in Future WDM Networks ", Photonic Network Communications Journal, vol. 6, issue 1, pp. 25-32, July 2003.
[18] C. Assi, A. Khalil, N. Ghani, and M. A. Ali , “Provisioning Algorithms in Survivable Optical Networks with Shared Protection” IEEE International Symposium in Computer and Communication (ISCC 2003), Turkey.

[19] A. Khalil, C. Assi, and M. A. Ali, “Analytical Modeling of Blocking Probabilities in WDM-Based Optical Networks with Fixed Alternate Routing and Trunk Reservation”, International Conference on Communications and Computer Networks, Cambridge, MIT, Nov. 2002.

[20] A. Shami, Y. Ye, C. Assi, S. Dixit, and M. A. Ali “Integrated  Routing/Signaling Protocols in GMPLS-based Optical Networks”, Optical Networks Magazine, Vol. 3, No. 4, July/August, 2002.

[21] C. Assi, Y. Ye, A. Shami, S. Dixit and M. A. Ali, “A Hybrid Distributed Fault-Management Protocol for Combating Single-Fiber Failures in Mesh-based DWDM Optical Networks” IEEE GLOBECOM 2002, Taipei, Taiwan.

[22] C. Assi, Y. Ye, A. Shami and M. A. Ali, “Integrated Routing Algorithms for Provisioning “Sub-Wavelength” Connections in IP-Over-WDM Networks” Journal of Photonics Networks, June 2002.

[23] A. Shami Y. Ye, C Assi and M. A. Ali, "Performance of Flooding/Parallel Probing-based Signaling Algorithms for Dynamic Provisioning of Lightpaths in Future IP-over-WDM-based Optical Networks," Optical Networks Magazine, April, 2002.

[24] C. Assi, A. Shami and M. A. Ali, “Impact of wavelength converters on the performance of optical networks’ Optical Networks Magazine, Vol. 3, Issue 2, March/April 2002

[25] A. Shami, C. Assi, I. Habib, and M. A. Ali, “Performance Evaluation of Two GMPLS-Based Distributed Control and Management Protocols for Dynamic Lightpath Provisioning in Future IP Networks,” Proc. of IEEE ICC 2002, NY, NY.

[26] Y. Ye, C. Assi, S. Dixit, and M. A. Ali, “A Simple Dynamic Integrated Provisioning/Protection Scheme in IP over WDM Networks,” IEEE Communication Magazine, Nov. 2001, Vol. 39 No. 11, PP. 174-182.

[27] C. Assi, A. Shami, and M. A. Ali, “Optical networking and real-time provisioning; An integrated vision for the next-generation Internet,” IEEE Network Magazine, July/Aug. 2001, Vol. 15, PP. 36-45.

[28] C. Assi, Y. Ye, A. Shami, S. Dixit, and M. A. Ali, “On the Merit of IP/MPLS Protection/Restoration in IP over WDM networks” IEEE GLOBECOM’01, San Antonio, Texas.

[29] A. Shami, C. Assi, I. Habib, and M. A. Ali, “On the merits of Flooding/ Parallel probing-based signaling algorithms for fast automatic setup and tear-down of paths in IP/MPLS-over-optical-networks,” IEEE GLOBECOM’01, San Antonio, Texas.

[30] C. Assi, Y. Ye, A. Shami, S. Dixit, I. Habib, and M. A. Ali, “Designing a survivable IP-over-WDM network,” OptiComm 2001, PP. 1-11, Denver, Colorado, Aug. 2001.

[31] A. Shami, Y. Ye, C. Assi, S. Dixit, and M. A. Ali, “A simple distributed signaling algorithm for real-time provisioning of optical channels in IP-centric DWDM-based optical networks,” OptiComm 2001, PP. 112-119, Denver, Colorado, Aug. 2001.

[32] A. Shami, Yinghua Ye, C. Assi, and M. A. Ali, “Multi-Path Based Distributed Routing Algorithm for WDM Routed Networks,” ECOC 2001, Amsterdam, The Netherlands.

[33] C. Assi, Y. Ye, A. Shami, S. Dixit, I. Habib, and M. A. Ali, “Designing a survivable IP-over-WDM network,” OptiComm 2001, PP. 1-11, Denver, Colorado, Aug. 2001.

[34] A. Shami, Yinghua Ye, C. Assi, and M. A. Ali, “Multi-Path Based Distributed Routing Algorithm for WDM Routed Networks,” ECOC 2001, Amsterdam, The Netherlands.

[35] A. Shami, C. Assi, and M. A. Ali, “Dynamic wavelength provisioning in DWDM-based optical networks,” The 5th Working-Conference on Optical Network Design and Modeling “ONDM 2001”, Vienna, Austria.

[36] Y. Ye, C. Assi, S. Dixit, and M. A. Ali, “The Impact of Shared Protection Mechanisms in IP over WDM Networks” Proceedings, SPIE APOC2001, China.

[37] M. A. Ali, A. Shami, C. Assi, , and R. Kurtz, “Architectural Options for Next-Generation Networking Paradigm: Is Optical Internet the answer?,” Special Issue IP-over-WDM, Photonic Network Communications Journal, Nov, 2000,  PP. 7-21.

[38] Y. Ye, S. Dixit, and M. A. Ali, “On Joint Protection/Restoration in a hybrid, IP-centric DWDM-based data optical Network,” IEEE Communication Magazine, June 2000, PP. 174-183.

[39] Y. Ye, and M. A. Ali, “Design of a Hybrid Protection Scheme for Survivable Wavelength-routed Optical Transport Networks,” 5th European Conf. on Networks & Optical Communications, Stuttgart, Germany, June 2000.

[40] Y. Ye, and M. A. Ali, “Scaling limitations in full-mesh WDM ring networks using two-band EDFAs and fiber grating technologies ," ICAPT 2000, June, 2000, Quebec City, Quebec, Canada

[41]Y. Ye, And M. A. Ali, “Optical wavelength planning and performance for full meshed WDM ring Networks,” SPIE, Photonics East, Sept. 99.

[42] D. Richards, Janet Jackel, and M. A. Ali, “Detecting fiber cuts in a WDM Ring with saturated EDFAs,”OFC'99, paper FJ4-1, PP. 155-156, San Diego, CA, Feb. 99.

[43] A. Hussien, K. Sohraby, and M. A. Ali "performance analysis of a 2-D multiserver discrete time Queueing systems for ATM-based B-ISDN," GLOBCOM   98, Phoenix,  Az. .

[44] M. A. Ali, D. Richards, M. Mendez, and J. A. Nagel, “Simulation of a Tb/s WDM transmission system using Silica-based two-band EDFA confihuration,” Proceedings of the 11th IEEE/LEOS Annual meeting on Optical Networks and Systems, Orlando,  FL.,  Dec. 98.

[45] D. Richards, Janet Jackel, and M. A. Ali, “Detecting fiber cuts in a WDM Ring with Optical protection Switching: Simulation and Experiment,” (ECOC’98), Madrid, Spain.

[46] M. Mendez and M. A. Ali, "Simulation of 64 x 2.5 Gb/s WDM Transmission Over 1056 km of Standard Single Mode Fiber Using Gain-flattened Silica-Based EDFAs," IEEE Photonic Technology Letters , Vol. 10, PP. 300-302, Feb. 1998.

[47] G. Luo, J. Zyskind, J. Nagel, and M. A. Ali "Experimental and theoretical Performance degradation analysis of all-optical gain-clamped EDFA’s due to relaxation oscillations and spectral hole burning in amplified WDM Networks," IEEE Journal of Lightwave Technology, Vol. 16, PP. 527-533. April 1998.

[48] D. Richards, Janet Jackel, and M. A. Ali, “A theoretical investigation of dynamic all-optical automatic gain control in multi-channel EDFA’s and EDFA Cascades,” IEEE Journal of Selected Topics in Quantum Electronics, Vol. 3, PP. 1027-1036, Jan. 1998.

[49] D. Richards, Janet Jackel, and M. A. Ali, “Multi-Channel  EDFA chain control: A Comparison of two all-optical approaches,” IEEE Photonic Technology Letters, Vol. 10, PP. 145-158, Jan. 1998.

[50] M. A. Ali and G. Mativieur, "Performance analysis of multi-channel 16/64 QAM CATV distribution network using Semiconductor Optical Amplifier as an external modulator," IEEE Photonic Technology Letters , Vol. 9, PP. 690-692, May 1997.

[51] G. Luo, J. Zyskind, Y. Sun, J. Sulhoff, and M. A. Ali, "Performance degradation of all-optical gain-clamped EDFA’s due to relaxation oscillations and spectral hole burning in amplified WDM Networks," IEEE Photonic Technology

[52] D. Richards, M. A. Ali and J. Jackel, and, “A theoretical investigation of dynamic automatic gain control in multi-channel EDFA Cascades,” 23rd European Conference on Optical communications (ECOC’97), Vol. 3, PP. 47-50, Edinburgh, UK, Sep. 1997.

[53] G. Luo, J. Zyskind, Y. Sun, J. Sulhoff, and M. A. Ali "Relaxation oscillations and spectral hole burning in laser automatic gain control of EDFAs," Optical Fiber communication Conference (OFC'97), Technical digest series, Vol. 9, paper WF4, Dallas, Texas, Feb. 1997

[54] J. Pan, R. Vodhanel, R. E. Wagner, A. Elrefaie, and M. A. Ali, "A simple and robust method of gain equalization for the protection path of WDM self-healing ring networks," Optical Fiber communication Conference (OFC'97), Technical digest series, Vol. 9, paper WL44, Dallas, Texas, Feb. 1997.

[55] A. Hussien, K. Sohraby, and M. A. Ali "Traffic Correlation in Multimedia Real-Time Video Conference" IEEE Symposium on Computers and Communications (ISCC’97), Alexandria, Egypt, July 1997.

[56] D. Richards, M. A. Ali, and Janet Jackel, “EDFA chain control: A Comparison of two all-optical approaches,” Proceedings of the IEEE/LEOS Summer Topical Meeting on WDM Components Technology, Session FB2, PP. 70-71, Montrial, Quebec, Canada, August 1997.

[57] M. A. Ali, R. Wagner, A. Elrefaie, and S. Ahmed "A detailed comparison of the overall performance of 980- and 1480-nm pumped EDFA cascades in WDM multiple access Lightwave networks," Joint Special issue on Multiwavelength Optical Networks, IEEE Journals of Selected Areas in Communications/Lightwave Technology, Vol. 14, PP. 1436-1448, June 1996.

[58] G. Mativieur and M. A. Ali, "Simulation of multi-channel AM-VSB CATV optical link employing Semiconductor Optical Amplifier as an external modulator," IEEE Photonic Technology Letters, Vol. 8, PP. 122-124, Jan. 1996.

[59] G. Mativieur and M. A. Ali "Simulation of multi-channel 16/64 QAM CATV distribution network employing SOA as an external modulator," Proceedings of the 9th IEEE/LEOS Annual meeting on Optical Networks and Systems, Session OC8.2, Boston., MA, Nov. 1996.

[60] F. Shehadeh, R. Vodhanel, C. Gibbons, and  M. A. Ali "Comparison of gain control techniques to stabilize EDFAs for WDM networks," Optical Fiber communication Conference (OFC'96), Technical digest series, Vol. 8, paper WM8, San Jose, CA, Feb. 1996.

[61] J. Pan, M. A. Ali, A. Elrefaie, and R. Wagner, "Multiwavelength Fiber-Amplifier Cascades with Equalization employing Mach-Zehnder optical filter," IEEE Photonic Technology Letters, Vol. 7, PP. 1501-1503, Dec. 1995.

[62] F. Shehadeh, R. Vodhanel, R. Wagner, C. Gibbons, and M. A. Ali, "Gain-equalized, Eight wavelength WDM optical Add-Drop Multiplexer with an 8-dB dynamic range," IEEE Photonic Technology Letters, Vol. 7, PP. 1075-1077, Sep. 1995.

[63] M. A. Ali, A. Elrefaie, and R. E. Wagner, (Invited) "980-nm versus 1480-nm pumped EDFA cascade performance in WDM multiple access Lightwave networks," Proceedings of the 8th IEEE/LEOS Annual meeting on Optical Networks and Systems, session ONS1.3, San Franc6sco, CA, October 1995.

[64] G. Mativieur and M. A. Ali "Simulation of multi-channel AM-VSB CATV lihgtwave system employing SOA as an external modulator," Proceedings of the 8th IEEE/LEOS Annual meeting on Optical Networks and Systems, session OC8.2, San Francisco, CA, Nov. 1995.

[65] F. Shehadeh, R. Vodhanel, C. Gibbons, R. E. Wagner, and M. A. Ali, "Eight-wavelength WDM Add-Drop Multiplexer with an 8-dB dynamic range," Optical Fiber communication Conference (OFC'95), Technical digest series, Vol. 8, paper TuH2, San Diego, CA, Feb. 1995.

[66] M. A. Ali, A. Elrefaie, R. Wagner, and S. Ahmed "Performance of EDFA Cascades in WDM Multiple access Lightwave Networks," IEEE Photonic Technology Letters, Vol. 6, PP. 1142-1145, Sep. 1994.

[67] M. A. Ali, A. Elrefaie, R. E. Wagner, F. Mendez, J. Pan, and S. Ahmed  "Optimized performance of EDFAs in Multiwavelength lightwave Systems," IEEE Photonic Technology Letters , Vol. 6, PP. 1039-1042, Aug. 1994.

[68] A. Elrefaie, M. A. Ali, R. E. Wagner, and F. Mendez "Fiber-amplifier Cascades in 4-fiber Multiwavelength Interoffice Ring Networks," Proceedings of the IEEE/LEOS Summer Topical Meeting on Optical Networks and their enabling technologies, Session T1.3, PP. 31-32, Lake Tahoe, NV, July 1994.

[69] J. Pan, A. Elrefaie, R. E. Wagner, and M. A. Ali "Fiber-amplifier Cascades with Equalization employing Mach-Zehnder optical filters in Multiwavelength Systems," Topical Meeting in Optical Amplifiers and their applications, paper FA3 PP. 114-116, Brecknridghe, Colorado, 1994.

[70] M. A. Ali, A. Elrefaei, H. Issa, and S. Ahmed, "High Speed Optical Time-Division Demultiplexer using Semiconductor Optical Amplifiers, " IEEE Journal of Lightwave Technology, Vol. 10, pp 1735-1742. Nov. 1993.

[71] S. Ahmed, Z. Zang, K. Yoo, M. A. Ali, and R Alfano, "Effect of multiple light scattering and self absorption on the fluorescence spectra of dye in random media," J. of Applied Optics, Vol. 27, May 1993.

[72] M. A. Ali (Invited) "Semiconductor Optical Amplifiers for use in future B-ISDN," Optical Fiber communication Conference (OFC'93), Workshop on simulation and modeling of lightwave systems, San Jose, CA, Feb. 1993.

[73] M. A. Ali, A. Elrefaei and S.A. Ahmed, "Simulation of 12.5 Gbit/s Optical Time Division Multiplexer using Semiconductor Optical Amplifiers as External Modulators," IEEE Photonic Technology Letters, Vol. 4, pp. 280-283, March 1992.  

[74] M. A. Ali, and S.A. Ahmed "Simulation of Semiconductor Optical Amplifier for external modulation and demultiplexing in multi-Gb/s OTDM systems," International Conf. on lasers, 91, Proceedings, Session WD.7, 1992.

[75] M. A. Ali, B. Panoutsopoulos, and S.A. Ahmed, "Potential and limitations of energy transfer processes in pulsed and CW dye lasers mixtures," Journal of Applied Optics, Vol. 31, pp. 7100-7107, Nov. 1992.

[76] B. Panoutsopoulos, M. A. Ali, and S.A. Ahmed, "Experimental Verification of a theoretical Model for CW energy transfer dye mixture laser in the near IR spectral region," Journal of Applied Optics, Vol. 31, pp. 1213-1216, March 1992.

[77] M. A. Ali, and S.A. Ahmed, "A second condition for the Pseudo-Brewster angle of  highly absorbing media," Journal of Optical Society of America A, Vol. 8, Sep. 1992.

[78] M. A. Ali, J. Moghaddasi, and S.A. Ahmed, "Optical properties of cooled Rhodamine B in Ethanol," Journal of Optical Society of America B, Vol. 8, PP. 1807-1810, Sep. 1991.

[79] M. A. Ali, B. Panoutsopoulos, and S.A. Ahmed, "On the feasibility of generating tunable cw argon laser pumped energy transfer dye laser emission in the near IR spectral region," Journal of Applied Optics, Vol. 30, PP. 312-316, Jan. 1991.

[80] M. A. Ali, and S.A. Ahmed, "Temperature effects in Rh-B dyes and improvements in CW dye laser performance," Journal of Laser Chemistry, Vol. 11, PP. 31-38, 1991.

[81] B. Panoutsopoulos, M. A. Ali, and S.A. Ahmed, "CW energy transfer dye laser in the near Infrared," CLEO 91, Proceedings, Session CTHR3, PP. 429-430, Washington DC, 1991.

[82] M. A. Ali, J. Moghaddasi, and S.A. Ahmed, "Examinations of Temperature effects on the lasing characteristics of Rhodamine CW dye lasers," Journal of Applied Optics, Vol. 29, PP. 3945-3949, Sep. 1990.

[83] M. A. Ali  and S. Ahmed, "Reflectance of an absorbing medium for incident light of arbitrary polarization: Correlation between the oscillatory behavior and the complex e plane," Journal of Applied Optics, Vol. 29, PP. 4633-4637, Nov. 1990.

[84] M. A. Ali, M. Elmassry, and S.A. Ahmed, "Practical method for obtaining spectral distribution of gain in energy transfer dye lasers," Journal of Applied Optics, Vol. 29, PP. 4494-4498, Oct. 1990.

[85] S. Ahmed, B. Panoutsopoulos and M. A. Ali, "CW energy transfer dye laser in the near Infrared, Simulation and experimental results," Laser 90, San Diego, CA, October 1990.

[86] M. A. Ali, S.A. Ahmed and K. Mitwally "Fluorescence and gain predictions in laser dye mixtures," Journal of Applied Optics, Vol. 28, PP. 3708-3712, Sep. 1989. 

[87] M. A. Ali, S. Ahmed and A. Chokhavatia "Examinations of a generalized model for radiationless energy transfer dyes. Comparisons of theory and experiments," Journal of Chemical Physics, 91, PP. 2892-2897, Sep. 1989.

[88] M. A. Ali, and S. Ahmed "Comprehensive Examinations of radiationless energy transfer models in dyes. Comparisons of theory and experiments," Journal of Chemical Physics, 90, PP. 1484-1491, Feb. 1989.

[89] S. Ahmed, M. A. Ali, K. Mitwally, and M. El-Massry "Optical refractive and reflective properties of resonantly absorbing medium," Journal of  Chemical Physics, 91, PP. 3838-3845, Oct. 1989.