• Interference and intrusion in wireless sensor networks 

  O'Mahony, George D.; Curran, James T.; Harris, Philip J.; Murphy, Colin C. (Institute of Electrical and Electronics Engineers (IEEE), 2020-04-13)

  Wireless sensor network (WSN) systems for safety-critical, space and Internet of Things applications have recently begun to adopt open standards and commercial-off-the-shelf equipment, and persistently face challenges of ...
• Low-loss wavelength-multiplexed optical scanners using volume Bragg gratings for transmit-receive lasercom systems 

  Yaqoob, Zahid; Riza, Nabeel A. (Society of Photo-Optical Instrumentation Engineers (SPIE), 2004-05-01)

  Low-loss, no moving parts, free-space wavelength-multiplexed optical scanner (W-MOS) modules for transmit-receive lasercom systems are proposed and experimentally demonstrated. The proposed scanners are realized using ...
• Variable fiber optic attenuator using a bulk-micromachined deformable micromirror 

  Mughal, M. Junaid; Riza, Nabeel A. (Society of Photo-Optical Instrumentation Engineers (SPIE), 2004-10-01)

  A compact fiber variable optical attenuator (VOA) with <1-dB insertion loss and >25-dB dynamic range is proposed and demonstrated at the 1550-nm band using a fiber collimator lens and a bulk-micromachined deformable ...
• Switchless hybrid analog-digital variable optical delay line for radio frequency signal processing 

  Riza, Nabeel A. (Society of Photo-Optical Instrumentation Engineers (SPIE), 2009-03-01)

  The author proposes the design of a novel switchless variable optical delay line (VFODL) for radio frequency (rf) signals that combines an analog mode VFODL with a discrete-state VFODL. This hybrid VFODL proposes the use ...
• Smart multiple-mode indoor optical wireless design and multimode light source smart energy-efficient links 

  Marraccini, Philip J.; Riza, Nabeel A. (Society of Photo-Optical Instrumentation Engineers (SPIE), 2013-05-07)

  We present the design of a smart multiple-mode indoor optical wireless system that combines line-of-sight (LOS) and non-LOS optical wireless methods to smartly adapt to changes in environment and application. The proposed ...

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