Now showing items 1-17 of 17

    • Acousto-electro-optic demultiplexers in high data-rate optical communication systems 

      Abushagur, Mustafa; Helaly, A. (Elsveier - Optics & Laser Technology, 1996-09)
      Acousto-electro-optic scanners are introduced as time-division demultiplexing devices in optical fibre communication systems. These devices can time-demultiplex digital signals with multiple Gb s−1 data rates into a large ...
    • Acousto-optic star couplers for routing and broadcasting in local area networks 

      Helaly, Anwar; Abushagur, Mustafa (Wiley Periodicals - Microwave and Optical Technology Letters, 1993-10-28)
      Acousto-optic deflectors are introduced to be used as star couplers that perform broadcasting and routing in local area networks. Configurations for both single-wavelength and multiwavelength broadcast-and-select networks ...
    • Acousto-optic wavelength division multiplexing system 

      Helaly, Anwar; Abushagur, Mustafa (Wiley Periodicals - Microwave and Optical Technology Letters, 1992-06-05)
      A novel wavelength division multiplexing/demultiplexing (WDM) system using acousto-optic Bragg cell is presented. The system is adaptable for any wavelength deviation of light sources caused by temperature changes and ...
    • Band selection in an amplified spontaneous emission source using the backward-feedback technique 

      Sinivasagam, V.; Dimyati, K.; Singh, R.; Abushagur, Mustafa (Wiley, 2005-06)
      In this paper, the band-selective behavior in an amplified spontaneous emission (ASE) source of an erbium-doped silica fiber (EDF) is demonstrated. C-band operation is obtained without backward ASE feedback, whereas L-band ...
    • Coherent optical processor for inverse filter generation 

      Abushagur, Mustafa; Riasati, Vahid (Wiley Periodicals - Microwave and Optical Technology Letters, 2007-01-25)
      A new algorithm and system architecture for inverse filter generation using a coherent iterative optical processor is presented. This processor avoids the singularity problem usually faced in inverse filter generation. The ...
    • Dynamic acousto-optic photopolarimeter/ spectrophotopolarimeter 

      El-Saba, Aed; Abushagur, Mustafa (Society of Photo-Optical Instrumentation Engineers (SPIE) - Optical Engineering, 1999-07)
      We propose a novel technique for a new division-of-amplitude photopolarimeter capable of complete measurement of the state of polarization of light, as determined by the four Stokes parameters. This photopolarimeter ...
    • Error effects on the processing of adaptive array data using the BOC 

      Abushagur, Mustafa (Wiley Periodicals - Microwave and Optical Technology Letters, 1989-09-26)
      The Bimodal Optical Computer (BOC) is considered for Adaptive Phase Array Radar (APAR) data processing. The effect of the errors in the BOC and the number of iterations on the optimum weight calculations for the interference ...
    • Fiber-optic four-detector polarimeter 

      Bouzid, Ahmed; Abushagur, Mustafa; El-Sabae, Aed; Azzam, R.M.A. (Elsevier - Optics Communications, 1995-07-15)
      A novel design for a fiber-optic four-detector polarimeter (FO-FDP) is presented. It consists of four externally induced incore fiber gratings together with four photodetectors. The device is compact, light-weight, avoids ...
    • Fractional correlations based on the modified fractional order Fourier transform 

      Almanasreh, Ahmed; Abushagur, Mustafa (Society of Photo-Optical Instrumentation Engineers (SPIE) - Optical Engineering, 1998-01)
      Based on the modified fractional order Fourier transform (MFROFT), we introduce a modified fractional correlation operation (MFCO). We propose two systems to implement the MFCO experimentally. These are analyzed ...
    • Heterodyne detection for Fiber Bragg Grating sensors 

      Bellil, Hedi; Abushagur, Mustafa (Elsveier - Optics & Laser Technology, 2000-07)
      In this paper, we present a Fiber-Bragg-Grating-based temperature sensor. The technique employs heterodyne detection using two Fiber Bragg Gratings. One of the gratings is used as a reference (local oscillator) and the ...
    • Hybrid optical processor for systems of nonlinear equations 

      Abushagur, Mustafa; Mansour, Mansour; Choi, Pyung-Suk; Caulfield, H. John (Elsevier - Optics Communications, 1996-03)
      A hybrid optical processor to solve a system of nonlinear equations is presented. The proposed system has been based on the Bimodal Optical Computer (BOC). Two algorithms based on the BOC are presented and compared. One ...
    • Image deconvolution using a micro genetic algorithm 

      Johnson, Eric; Abushagur, Mustafa (Elsevier - Optics Communications, 1997-07-15)
      Image deconvolution is addressed using a modified Genetic Algorithm for the error minimization. Numerical examples are presented to demonstrate the algorithm’s robustness. Specifically, noise levels and various regions ...
    • Nonsplit dual-stage EDFA operating in the C- plus L-band 

      Sinivasagam, V.; Singh, R.; Abushagur, Mustafa; Dimyati, K. (Microwave and optical technology letters, 2004-07-30)
      The feasibility of a dual-stage erbium-doped fiber amplifier (EDFA) design for operation in both the C-band and the L-band is studied. The design is comprised of nonsplit single-pass amplification at both bands, thus ...
    • Optical Fourier and Hartley transform adaptive filters 

      Abushagur, Mustafa; Berinato, Robert (Microwave and optical technology letters, 2004-01-05)
      Optical signal-processing architectures are presented to realize frequency-domain implementations of the classical least-mean-square (LMS) adaptive-filtering algorithm. Optical implementation of both Fourier and Hartley ...
    • Optical processor for adaptive arrays 

      Abushagur, Mustafa (Elsevier - Optics Communications, 1990-06)
      Two novel architectures for implementing the LMS algorithm optically are introduced. Convergence of the LMS algorithm is analyzed and the effect of the analog inaccuracies are considered.
    • Spectrophotopolarimeter based on multiple reflections in a coated dielectric slab 

      Azzam, R.; El-Saba, A.M.; Abushagur, Mustafa (Elsevier - Thin solid films, 1998-02)
      A division-of-amplitude photopolarimeter is described that uses multiple reflections inside a coated dielectric slab at oblique incidence. The first four parallel reflected beams pass through suitably oriented, but fixed, ...
    • Thin-film approximate modeling of in-core fiber gratings 

      Bouzid, Ahmed; Abushagur, Mustafa (SPIE - Optical engineering, 1996-10)
      Generally tilted in-core fiber gratings are modeled by an equivalent inhomogeneous optical thin film. Its reflectance spectrum is evaluated using the multilayer and optical-path approximations. The results are shown to be ...