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Nisar Ahmed
Research Assistant at Univ of Southern California
SPIE Involvement:
Author
Area of Expertise:
High-speed Optical Communications , Optical Fibers , Millimeter wave communications , Free-space Optics , Fourier Optics
Websites:
Personal Website
Publications (3)
Proceedings Article | 15 March 2016 Paper
Free-space optical communications using encoding of data on different orbital-angular-momentum modes
Asher Willner, Yongxiong Ren, Guodong Xie, Long Li, Yinwen Cao, Zhe Zhao, Peicheng Liao, Zhe Wang, Yan Yan, Nisar Ahmed, Cong Liu, Moshe Tur, Alan Willner
Proceedings Volume 9739, 97390J (2016) https://doi.org/10.1117/12.2225375
KEYWORDS: Computer programming, Free space optical communications, Free space optics, Data communications, Multiplexing, Switches, Digital signal processing, Gaussian beams, Atmospheric propagation, Receivers
Proceedings Article | 5 February 2013 Paper
Performance analysis of spectrally efficient free-space data link using spatially multiplexed orbital angular momentum beams
Hao Huang, Yongxiong Ren, Yan Yan, Yang Yue, Nisar Ahmed, Amanda Bozovich, Samuel Dolinar, Alan Willner
Proceedings Volume 8647, 864706 (2013) https://doi.org/10.1117/12.2004886
KEYWORDS: Multiplexing, Polarization, Spatial light modulators, Beam splitters, Spatial filters, Gaussian beams, Mirrors, Digital signal processing, Optical amplifiers, Receivers
Proceedings Article | 28 October 2010 Open Access Paper
Distributed, collaborative human-robotic networks for outdoor experiments in search, identify and track
Daniel Lee, Mark McClelland, Joseph Schneider, Tsung-Lin Yang, Dan Gallagher, John Wang, Danelle Shah, Nisar Ahmed, Pete Moran, Brandon Jones, Tung-Sing Leung, Aaron Nathan, Hadas Kress-Gazit, Mark Campbell
Proceedings Volume 7833, 78330E (2010) https://doi.org/10.1117/12.868572
KEYWORDS: Robots, Sensors, Cameras, Detection and tracking algorithms, Target detection, Human-machine interfaces, Laser range finders, LIDAR, Global Positioning System, Environmental sensing
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