Ms. Abir Hraghi Profile

Abir Hraghi

Doctoral Candidate at SUP'COM

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Publications (9)

Proceedings Article | 26 April 2019 Paper

Photonics enabled generation of multiband millimeter-wave radio over fiber signals for frequency band 200 GHz-300 GHz

Zaineb Samoud, Abir Hraghi, Mourad Menif

Proceedings Volume 11031, 1103118 (2019) https://doi.org/10.1117/12.2520975

KEYWORDS: Modulation, Hybrid fiber radio, Modulators, Signal attenuation, Wavelength division multiplexing, Photonics, Wireless communications, Radio over Fiber, Radio optics, Optical fibers

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Proceedings Article | 26 April 2019 Paper

A performance comparison between lumped, distributed and optical phase locked local oscillator used in the photonic generation of millimeter-wave signals for radio over fiber systems

Zaineb Samoud, Abir Hraghi, Mourad Menif

Proceedings Volume 11031, 110311A (2019) https://doi.org/10.1117/12.2522465

KEYWORDS: Modulation, Signal to noise ratio, Receivers, Signal generators, Single mode fibers, Phase shift keying, Radio optics, Wavelength division multiplexing, Oscillators, Distributed computing

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Proceedings Article | 9 September 2015 Paper

Robust modulation formats recognition technique using wavelet transform for high speed optical networks

Latifa Guesmi, Abir Hraghi, Mourad Menif

Proceedings Volume 9598, 95981F (2015) https://doi.org/10.1117/12.2188202

KEYWORDS: Modulation, Wavelet transforms, Orthogonal frequency division multiplexing, Wavelength division multiplexing, Optical networks, Signal detection, Wavelets, Continuous wavelet transforms, Detection and tracking algorithms, Neurons

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Proceedings Article | 1 May 2015 Paper

Side band suppression for wide band optical RoF systems

Hraghi Abir, Samir Ben Abid, Mourad Menif

Proceedings Volume 9516, 951619 (2015) https://doi.org/10.1117/12.2180566

KEYWORDS: Radio over Fiber, Extremely high frequency, Radio optics, Hybrid fiber radio, Modulators, Picosecond phenomena, Telecommunications, Transceivers, Communication engineering, Heterodyning

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Proceedings Article | 16 March 2015 Paper

Automatic modulation format recognition for the next generation optical communication networks using artificial neural networks

Latifa Guesmi, Abir Hraghi, Mourad Menif

Proceedings Volume 9357, 93571I (2015) https://doi.org/10.1117/12.2078422

KEYWORDS: Modulation, Wavelength division multiplexing, Artificial neural networks, Optical communications, Signal detection, Optical networks, Picosecond phenomena, Eye, Neurons, Neural networks

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Proceedings Article | 7 February 2015 Paper

Investigation of receiver contraints on the transmission performance of 1 Tbps WDM-Nyquist and CO-OFDM signals

Abir Hraghi, Mourad Menif

Proceedings Volume 9389, 93890F (2015) https://doi.org/10.1117/12.2081539

KEYWORDS: Receivers, Modulation, Complex systems, Polarization, Signal detection, Signal to noise ratio, Channel projecting optics, Frequency division multiplexing, Device simulation, Single mode fibers

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Proceedings Article | 25 September 2014 Paper

One Tbps superchannel generated by Optical Flat Comb Source WDM-Nyquist and OFDM system simulative investigation

Abir Hraghi, Mourad Menif

Proceedings Volume 9194, 91940J (2014) https://doi.org/10.1117/12.2063658

KEYWORDS: Modulation, Orthogonal frequency division multiplexing, Optical amplifiers, Receivers, Digital signal processing, Raman spectroscopy, Optical filters, Linear filtering, Signal detection, Solids

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Proceedings Article | 1 May 2014 Paper

A performance evaluation of WDM-Nyquist systems generated by optical flat comb source and based on POLMUX-QPSK, POLMUX-DQPSK, POLMUX-16QAM and POLMUX-64QAM

Abir Hraghi, Mourad Menif

Proceedings Volume 9131, 91311U (2014) https://doi.org/10.1117/12.2052111

KEYWORDS: Modulation, Single mode fibers, Optical fibers, Receivers, Polarization, Phase shift keying, Forward error correction, Tolerancing, Channel projecting optics, Scanning probe microscopy

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In this paper, we implement a WDM-Nyquist transmission system with 12.5 GHz channel spacing generated through an Optical Flat Comb Source (OFCS). Each channel could carry one of four different modulation format as Polarization Multiplexing-Quadrature Phase Shift Keying (POLMUX-QPSK), Polarization Multiplexing-Differential Quadrature Phase Shift Keying (POLMUX-DQPSK), Polarization Multiplexing-Quadrature Amplitude Modulation based on 16 (POLMUX-16QAM) and 64 (POLMUX-64QAM) with Return-to-Zero (RZ) pulse carving and 33% duty cycle. Numerical simulations of 1 Tbit/s superchannel have been carried out, in order to evaluate the performances of the different modulation format using appropriate metrics. We discuss their back-to-back receiver sensitivity and the required Optical-to-Noise Signal Ratio (OSNR) for 3.8•10^-3 and 10^-9 Bit Error Rate (BER). We find that POLMUXQPSK has the best receiver sensitivity and the lower OSNR penalty compared to the other modulation formats. With POLMUX-QPSK sensitivity as reference, we can observe a power penalty of 13.4 dB (for a BER equal to 3.8•10^-3) for POLMUX-64QAM. In addition, we can observe an OSNR penalty of 21 dB in OSNR for POLMUX-64QAM compared to POLMUX-QPSK modulation format for a BER equal to 3.8•10^-3. However, it is important to mention that POLMUX- 64QAM presents higher Spectral Efficiency (SE). We study also the robustness of these four optical modulation formats for transmission of 1 Tbit/s in dispersion compensated WDM-Nyquist systems using two kinds of transmission fibers: SMF (Single Mode Fiber) and NZDSF (Non-Zero Dispersion Shifted Fiber). We find that POLMUX-QPSK is the suitable modulation format in dispersion compensated WDM-Nyquist systems using NZDSF fiber. We simulate the nonlinear effect tolerance by considering self-phase modulation (SPM), cross-phase modulation (XPM) and four-wave mixing (FWM) for the different modulation format. We observe that POLMUX-QPSK has the best robustness against the cited nonlinear fiber effects in NZDSF fiber.

Proceedings Article | 7 May 2013 Paper

A performance comparison between 33RZ-POMUX-DQPSK and 33RZ-DC-DQPSK using coherent detection for 1.6 Tb/s (16x100 Gb/s) over 1200 km

Abir Hraghi, Mourad Menif

Proceedings Volume 8781, 87811F (2013) https://doi.org/10.1117/12.2019469

KEYWORDS: Modulation, Receivers, Optical fibers, Wavelength division multiplexing, Polarization, Phase shift keying, Tolerancing, Nonlinear optics, Signal detection, Channel projecting optics

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Showing 5 of 9 publications

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