TechRxiv

Abdullah S. Karar

0000-0003-0044-996X

Associate Professor (Photonics and Electrooptics; Signal Processing and Analysis; Communication, Networking and Broadcast Technologies)

Kuwait

Abdullah S. Karar, received the Ph.D. degree in electrical and computer engineering from Queen's University, Kingston, ON, Canada with focus on, digital signal processing for directly modulated lasers in optical fiber communications, in 2013. From 2013 until 2014, he held an NSERC Post-Doctoral Fellowship in mathematics and statistics, researching super-channel coherent optical transmission, and was an adjunct Assistant Professor in electrical engineering. In 2014, he joined Infinera Corporation, Ottawa, ON, as a Senior/Staff System Design Engineer working on digital signal processing algorithms for coherent optical transceivers. In 2018, he joined the American University of the Middle East, Kuwait, where he is currently an Associate Professor in electrical engineering. He is a Senior Member of IEEE and a member of OSA. Dr. Karar, has authored/co-authored over 80 peer reviewed publications in the areas of optical fiber communications and photonics. He has been granted 6 US patents.

Publications

  • https://scholar.google.com/citations?hl=en&user=ts6PunAAAAAJ
  • Object-oriented numerical simulation of a passively modelocked fiber laser
  • Raman self-frequency shift in a passively mode-locked fibre laser containing a long-period fibre grating
  • Electronic dispersion pre-compensation using a directly modulated laser at 10.7-Gb/s
  • Machine-Learning-Based Muscle Control of a 3D-Printed Bionic Arm
  • Time-resolved frequency chirp control of semiconductor lasers using digital signal processing
  • Reconfigurable thin film filter for compensating AOI deviation effects using LC coupled cavities
  • Photonic Nanojets and Whispering Gallery Modes in Smooth and Corrugated Micro-Cylinders under Point-Source Illumination
  • A Programmable Mode-Locked Fiber Laser Using Phase-Only Pulse Shaping and the Genetic Algorithm
  • Biometrics Verification Modality Using Multi-Channel sEMG Wearable Bracelet
  • Experimental demonstration of pre-electronic dispersion compensation in IM/DD systems using an iterative algorithm
  • Nonlinear dynamics of a passively mode-locked fiber laser containing a long-period fiber grating
  • Micro-Fabricated RTD Based Sensor for Breathing Analysis and Monitoring
  • Pulse Shape Estimation in a DSR Fiber Laser Using the Genetic Algorithm
  • Contribution of New Three-Dimensional Code Based on the VWZCC Code Extension in Eliminating Multiple Access Interference in Optical CDMA Networks
  • Nonlinear Effect and MAI Impact on SAC-OCDMA System Based on 2D Multi-Diagonal Code and Laser Array
  • A Numerical Study of Optimization Methods for Phase-Only Optical Pulse-Shaping
  • Raman self-frequency shift in a passively mode-locked fibre laser containing a long-period fibre grating
  • Reducing the complexity of electronic pre-compensation for the nonlinear distortions in a directly modulated laser
  • Pulse shaping for 112 Gbit/s polarization multiplexed 16-QAM signals using a 21 GSa/s DAC
  • Pulse shaping for 112 Gbit/s polarization multiplexed 16-QAM signals using a 21 GSa/s DAC
  • Characterization of a mode-locked quantum-dash Fabry-Perot laser based on measurement of the complex optical spectrum
  • Pulse shaping for 112 Gbit/s polarization multiplexed 16-QAM signals using a 21 GSa/s DAC
  • Electronic precompensation of the nonlinear distortion in a 10 Gb/s 4-ary ASK directly modulated laser
  • Electronic pre-compensation for a 10.7-Gb/s system employing a directly modulated laser
  • Spectral filtering characteristics of a quantum-dash Fabry-Pérot laser and its implications on 40 Gb/s XPM based optical retiming performance
  • Impact of self-steepening on the dynamics of a passively modelocked fiber laser containing a long period fiber grating
  • Iterative Algorithm for Electronic Dispersion Compensation in IM/DD Systems
  • Gerchberg-Saxton Based FIR Filter for Electronic Dispersion Compensation in IM/DD Transmission Part II: Experimental Demonstration and Analysis
  • Gerchberg-Saxton Based Finite Impulse Response Filter for Electronic Dispersion Compensation in IM/DD Transmission: Experimental Demonstration
  • Gerchberg-Saxton Based FIR Filter for Electronic Dispersion Compensation in IM/DD Transmission Part I: Theory and Simulation
  • Electronic Dispersion Compensation and Functional Link Neural Network Equalization for IM/DD Links
  • Electronic Dispersion Compensation and Functional Link Neural Network Equalization for IM/DD Links
  • Electronic dispersion compensation and functional link neural network equalization for IM/DD links
  • Recent Advances in Coherent Optical Communications for Short-Reach: Phase Retrieval Methods
  • Predicting behaviour of photonic crystal fiber lasers using artificial neural networks
  • Capacity Improvement of 3D-OCDMA-PON Hybrid System Next Generation Using Weight Zero Cross Correlation Code
  • Study of transition dynamics from breathing single pulse to higher-order pulses and hysteresis in a figure-of-9 fiber laser

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Co-workers & collaborators

Wael Hosny Fouad Aly

Wael Hosny Fouad Aly

Xiong Wu

Xiong Wu

Abdullah S. Karar's public data