Fiber & Free-space Optic Devices in Optical Systems

 Journal Papers

  1. N. A. Riza and N. Madamopoulos, “High Signal-to-Noise Ratio Birefringence Compensated Optical Delay Line using a Noise Reduction Scheme,” Optics Letters ,Vol.20, No.22, pp.2351-2353, Nov.15, 1995.

  2. N. A. Riza and S. E. Saddow, “Optically Controlled Photoconductive N-bit Switched Microwave Signal Attenuator”,IEEE Microwave & Guided Wave Lett., Vol.5, No.12, pp.448-450 Dec. 1995.

  3. N. A. Riza and N. Madamopoulos, “Microwave band demonstration of a reflective geometry fiber and free-space binary photonic delay line,”IEEE Microwave & Guided Wave Lett., Vol.7, No.4, pp.  April 1997.

  4. N. A. Riza, “Analog Vector Modulation-Based Widely Tunable Frequency Photonic Beamformer for Phased Array Antennas,” Joint Special Issue of IEEE /OSA  Journal of Lightwave Tech  and IEEE Microwave Theoy & Techniques Journal, Vol.45, No.8, pp.1508-1512, Aug., 1997.

  5. N. A. Riza and Shifu Yuan, “ Demonstration of a liquid crystal adaptive alignment tweeker for high speed infrared band fiber-fed free-space systems,” Optical Engineering, Vol.37, No.6,  June, 1998.

  6. Shifu Yuan and N. A. Riza, “General formula for coupling loss characterization of single mode fiber collimators using gradient-index rod lenses,” Applied Optics, Vol.38, No.15, pp.3214-3222, May 20,  1999. Erratum, Applied Optics, Vol.38, No.30, p.6292, Oct.1999.

  7. S. Sumriddetchkajorn and N. A. Riza, "Fiber-connectorized multiwavelength 2x2 switch structure using a fiber loop mirror," Optics Communications, Vol. 175, pp. 89-95, 15 Feb. 2000.

  8. Z. Yaqoob, Azhar A. Rizvi and N. A. Riza, “Free-space wavelength multiplexed optical scanner,” Applied Optics, 40(35), 6425-6438, Dec. 10 (2001)

  9. Z. Yaqoob and N. A. Riza, “Free-Space Wavelength-Multiplexed Optical Scanner Demonstration,” Applied Optics-IP, Vol. 41, Issue 26, Page 5568 (September 2002).

  10. Martin van Buren and N. A. Riza, “ Foundations for low loss fiber gradient-index lens pair coupling with the self-imaging mechanism,” Applied Optics, LP, Vo.42, No.3, Jan. 20, 2003.

  11. N. A. Riza and Muzamil A. Arain, “ Code multiplexed optical scanner,” Applied Optics, IP, Vo.42, No.8, March 10, 2003.

  12. Z. Yaqoob, M. Arain, N. A. Riza, “ Wavelength multiplexed optical scanner using photothermorefractive glasses, Applied Optics-IP, Vol. 42, No. 26, p. 5251, Sept. 2003.

  13. N. A. Riza, M. A. Arain, and S. A. Khan, "Analog-Digital Variable Fiber-Optic Delay Line," IEEE/OSA Journal of Lightwave Technology, vol.22, No.2, pp.619-624, Feb. 2004.

  14. Z. Yaqoob and N. A. Riza, “Eye-safe passive-optics no-moving parts barcode scanners,” IEEE Photonics Technology Letters, Vol.16, No.3, pp.954-956, March 2004.

  15. Z. Yaqoob and N. A. Riza, “Low loss wavelength-multiplexed optical scanners using volume Bragg gratings for transmit-receive lasercom systems,” Optical Engineering, Vol.43, No.5, pp.1128-1135, May 2004.

  16. Nabeel A. Riza and Muzammil A. Arain, “Super Wide Angle Coverage Code Multiplexed Optical Scanner”, Optics Letters, Vol.29, No.9, pp.1004-1006, May 1, 2004.

  17. N. A. Riza and Z. Yaqoob, " Space Multiplexed Optical Scanner ", Applied Optics, Vol.43, No.13, pp.2703-2708, 1 May 2004.

  18. N. A. Riza and Z. Yaqoob, " Agile Interferometry: A Non-Traditional Approach", Optics Communications, Vol.241, Issues 4-6, pp.419-428, 16 Nov. 2004.

  19. N. A. Riza, M. Arain, F. Perez, “Harsh Environments Minimally Invasive Optical Sensor using Freespace Targets,” IEEE Sensors Journal, June 2006.

  20. N. A. Riza, M. Arain, F. Perez, “ 6H- Single Crystal Silicon Carbide Thermo-Optic Coefficient Measurements for Ultrahigh Temperatures up-to 1273 K in the telecommunications infrared band,” AIP J. of Appl. Phys., Vol.98, No.1, 2005.

  21. N. A. Riza, “Comment: on Wavelength controlled photonic true time delay for wideband applications,” IEEE Photon. Tech. Lett., Vol. 17, No.12, Dec. 2005.

 Patents

  1. N. A. Riza, “An optical transversal filter,” U.S.A. Patent No. 5,329,118, July 12, 1994.

  2. N. A. Riza, J. E. Hershey, and A.  A. Hassan, “Optical communication system using coplanar light modulators,” U.S.A. Patent No. 5,410,147, April 25, 1995.

  3. J. E. Hershey,  N. A. Riza,  and A. A. Hassan, “Optical synchronization algorithm and apparatus,” USA Patent No. 5,532,860, July 2, 1996.

  4. N. A. Riza, “Compact optical controller for phased array systems,” USA Patent No. 5,731,790, March 24, 1998.

  5. N. A. Riza, “Multiplexed Optical Scanner Technology,” Patent No. 6,687,036, Feb.3, 2004.