Photo of Md Asif Iqbal
    • School of Engineering and Applied Science, Aston University

      B4 7ET Birmingham

    20152019
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    Research Output 2015 2019

    2019

    Distributed Pumping Architecture to Improve the Noise Performance of Broadband Discrete Raman Amplifier

    Iqbal, M. A., Krzczanowicz, L., Philips, I. D., Harper, P. & Forysiak, W., 22 Apr 2019, 2019 Optical Fiber Communications Conference and Exhibition, OFC 2019 - Proceedings. Optical Society of America, 8696365

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    quadrature phase shift keying
    Quadrature phase shift keying
    Noise figure
    pumping
    amplifiers

    Distributed Raman Amplification for Combating Optical Nonlinearities in Fibre Transmission

    Tan, M., Al-Khateeb, M. A. Z., Asif Iqbal, M. & Ellis, A. D., 25 Apr 2019, Conference on Lasers and Electro-Optics/Pacific Rim, CLEOPR 2018. IEEE, Vol. Part F113-CLEOPR 2018. 140618

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Optical phase conjugation
    Light transmission
    Amplification
    Fibers
    Compensation and Redress

    Linear and Nonlinear Noise Characterisation of Dual Stage Broadband Discrete Raman Amplifiers

    Iqbal, M. A., Al-Khateeb, M. A. Z., Krzczanowicz, L., Phillips, I. D., Harper, P. & Forysiak, W., 15 Jul 2019, In : Journal of Lightwave Technology. 37, 14, p. 3679-3688 10 p., 8723646.

    Research output: Contribution to journalArticle

    Open Access
    File
    amplifiers
    broadband
    fibers
    signal to noise ratios
    quadrature phase shift keying
    pumping
    amplifiers
    broadband
    quadrature phase shift keying
    wavelengths

    Performance Estimation of Discrete Raman Amplification within Broadband Optical Networks

    Krzczanowicz, L., Al-khateeb, M. A. Z., Iqbal, M. A., Phillips, I., Harper, P. & Forysiak, W., 22 Apr 2019, 2019 Optical Fiber Communications Conference and Exhibition, OFC 2019 - Proceedings. Optical Society of America, 8696796

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Broadband networks
    Erbium doped fiber amplifiers
    Fiber optic networks
    penalties
    Amplification

    Recent Advances in Discrete Raman Amplifiers and their Applications to Wideband Optical Networks

    Krzczanowicz, L., Iqbal, M. A., Al-khateeb, M. A. Z., Phillips, I. D., Harper, P. & Forysiak, W., 19 Sep 2019, 21st International Conference on Transparent Optical Networks, ICTON 2019. IEEE, Vol. 2019-July. 8840021. (2019 21st International Conference on Transparent Optical Networks (ICTON)).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Broadband networks
    Fiber optic networks
    Erbium doped fiber amplifiers
    Fibers
    2018

    Analysis of the nonlinear Kerr effects in optical transmission systems that deploy optical phase conjugation

    Al-Khateeb, M., Iqbal, M. A., Tan, M., Ali, A., McCarthy, M. E., Harper, P. & Ellis, A. D., 29 Jan 2018, In : Optics Express. 26, 3

    Research output: Contribution to journalArticle

    Open Access
    File
    phase conjugation
    Kerr effects
    compensators
    nonlinearity

    Characterisation of Linear and Nonlinear Noise of a Dual-Stage Broadband Discrete Raman Amplifier

    Iqbal, M. A., Krzczanowicz, L., Al-Khateeb, M., Phillips, I. D., Tan, M., Harper, P. & Forysiak, W., 15 Nov 2018, 2018 European Conference on Optical Communication (ECOC). IEEE

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
    amplifiers
    broadband
    configurations
    fibers

    Digital Back-Propagation Performance in Wideband Optical Fibre Transmission Systems

    Galdino, L., Saavedra Mondaca, G., Semrau, D., Elson, D. J., Lavery, D., Tan, M., Iqbal, M. A., Harper, P., Killey, R. I. & Bayvel, P., 26 Apr 2018, 2017 European Conference on Optical Communication (ECOC). IEEE

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    optical fibers
    broadband
    bandwidth
    C band

    Enhanced Long-haul Transmission Using Forward Propagated Broadband First Order Raman Pump

    Iqbal, M. A., Tan, M. & Harper, P., 26 Apr 2018, 2017 European Conference on Optical Communication (ECOC). IEEE

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    pumps
    broadband
    aeroservoelasticity
    quadrature phase shift keying
    penalties
    Open Access
    File
    aeroservoelasticity
    Pumps
    pumps
    broadband
    Semiconductor lasers

    Evaluation of RIN Mitigated Dual Order Bidirectional Distributed Raman Amplification Using a Broadband First Order Forward Pump

    Iqbal, M. A., Tan, M. & Harper, P., 26 Apr 2018, 2017 European Conference on Optical Communication (ECOC). IEEE

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Amplification
    Pumps
    Quadrature phase shift keying
    Wavelength division multiplexing

    Improved design of ultra-wideband discrete raman amplifier with low noise and high gain

    Iqbal, M. A., Harper, P. & Forysiak, W., 5 Jul 2018, Nonlinear Photonics, NP 2018. Optical Society of America, Vol. Part F108-NP 2018.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Ultra-wideband (UWB)
    Noise figure
    Bandwidth

    Inter-channel Stimulated Raman Scattering and its Impact in Wideband Transmission Systems

    Saavedra, G., Semrau, D., Tan, M., Iqbal, M. A., Elson, D. J., Galdino, L., Harper, P., Killey, R. I. & Bayvel, P., 15 Mar 2018, Optical Fiber Communication Conference 2018. Optical Society of America, p. Th1C.3

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Raman spectra
    broadband
    modulation

    Low penalty, dual stage, broadband discrete Raman amplifier for high capacity WDM metro networks

    Krzczanowicz, L., Iqbal, M. A., Phillips, I., Tan, M., Skvortcov, P., Harper, P. & Forysiak, W., 15 Mar 2018, Optical Fiber Communication Conference 2018. Optical Society of America, p. W3D.3

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
    Quadrature phase shift keying
    Wavelength division multiplexing
    Amplification
    Fibers

    Low transmission penalty dual-stage broadband discrete Raman amplifier

    Krzczanowicz, L., Iqbal, M. A., Phillips, I. D., Tan, M., Skvortcov, P., Harper, P. & Forysiak, W., 8 Mar 2018, In : Optics Express. 26, 6, p. 7091-7097

    Research output: Contribution to journalArticle

    Open Access
    File
    penalties
    amplifiers
    broadband
    quadrature phase shift keying
    nonlinearity
    Open Access
    File
    penalties
    amplifiers
    fibers
    Fibers
    quadrature phase shift keying
    Open Access
    File
    noise intensity
    amplifiers
    pumps
    pumping
    broadband

    RIN Transfer Mitigation Technique Using Broadband Incoherent Pump in Distributed Raman Amplified Transmission Systems

    Iqbal, M. A., Tan, M. & Harper, P., 27 Sep 2018, 2018 20th International Conference on Transparent Optical Networks (ICTON). IEEE, 8473635. (2018 20th International Conference on Transparent Optical Networks (ICTON)).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
    pumps
    broadband
    pumping
    quadrature phase shift keying
    coherent radiation

    Transmission Performance Improvement Using Broadband Incoherent Counter-Pumped Distributed Raman Amplification

    Iqbal, M. A., Harper, P. & Tan, M., 15 Mar 2018, Optical Fiber Communication Conference 2018. Optical Society of America, p. Th1C.2

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
    Amplification
    Pumps
    2017

    Experimental Analysis of Nonlinear Impairments in Fibre Optic Transmission Systems up to 7.3 THz

    Saavedra Mondaca, G., Tan, M., Elson, D. J., Galdino, L., Semrau, D., Iqbal, M. A., Phillips, I. D., Harper, P., MacSuibhne, N., Ellis, A. D., Lavery, D., Thomsen, B. C., Killey, R. I. & Bayvel, P., 5 Oct 2017, In : Journal of Lightwave Technology. 35, 21, p. 4809 - 4816

    Research output: Contribution to journalArticle

    Open Access
    File
    impairment
    fiber optics
    bandwidth
    interference
    quadrature amplitude modulation

    Experimental investigation of nonlinear signal distortions in ultra-wideband transmission systems

    Saavedra, G., Tan, M., Elson, D. J., Galdino, L., Semrau, D., Iqbal, M. A., Phillips, I., Harper, P., MacSuibhne, N., Ellis, A., Lavery, D., Thomsen, B. C., Killey, R. & Bayvel, P., 23 Mar 2017, Optical Fiber Communication Conference 2017. Optical Society of America

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    signal distortion
    Signal distortion
    Nonlinear distortion
    Ultra-wideband (UWB)
    broadband

    Four wave mixing in distributed Raman amplified optical transmission systems

    Al-Khateeb, M. A. Z., Tan, M., Iqbal, M. A., McCarthy, M., Harper, P. & Ellis, A. D., 23 Jan 2017, 2016 IEEE Photonics Conference, IPC. IEEE, p. 795-796 2 p. ThB1.1

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    four-wave mixing
    margins
    pumping
    predictions
    approximation

    High gain, flattened, discrete raman fiber amplifier and its transmission performance

    El-Taher, A., Tan, M., Iqbal, M. A., Krzczanowicz, L., Phillips, I. D., Forysiak, W. & Harper, P., 29 Jun 2017, The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017. Optical Society of America, Vol. Part F82-CLEO_Europe 2017.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Fiber amplifiers
    Pumps
    Fibers
    Erbium doped fiber amplifiers
    Erbium

    Hybrid discrete Raman/EDFA design for broadband optical amplification in metro WDM systems

    Krzczanowicz, L., Phillips, I., Iqbal, M. A., Tan, M., Harper, P. & Forysiak, W., 4 Sep 2017, ICTON 2017 - 19th International Conference on Transparent Optical Networks. IEEE, p. 1-4 4 p. 8025083

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
    Erbium doped fiber amplifiers
    Wavelength division multiplexing
    Amplification
    Erbium
    Fibers

    Mitigating RIN-penalty to enhance the transmission performance in distributed Raman amplification system

    Tan, M., Iqbal, M. A., Turitsyn, S. K. & Harper, P., 17 Nov 2017, 2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017. IEEE, Vol. 2017-November. p. 1-3 3 p. (2017 Opto-Electronics and Communications Conference (OECC) and Photonics Global Conference (PGC)).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
    Noise abatement
    Amplification

    Noise and transmission performance improvement of broadband distributed Raman amplifier using bidirectional Raman pumping with dual order co-pumps

    Iqbal, M. A., Tan, M., Krzczanowicz, L., El-Taher, A., Forysiak, W., Ania-Castañón, J. D. & Harper, P., 24 Oct 2017, In : Optics Express. 25, 22, p. 27533-27542 10 p.

    Research output: Contribution to journalArticle

    Open Access
    File
    pumping
    amplifiers
    pumps
    broadband
    counters

    Optimal balance of RIN and ASE impairments in ultra-long raman laser amplified 10 × 30 GBaud DP-QPSK transmission

    Gallazzi, F., Rizzelli, G., Iqbal, M. A., Tan, M., Harper, P. & Ania-Castaño´n, J. D., 29 Jun 2017, The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017. Optical Society of America, Vol. Part F82-CLEO_Europe 2017.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Quadrature phase shift keying
    Fiber lasers
    Pumps
    Pumping (laser)
    Light amplifiers

    Performance characterization of high gain, high output power and low noise cascaded broadband discrete Raman amplifiers

    Iqbal, M. A., Tan, M., Krzczanowicz, L., Skvortcov, P., El-Taher, A., Philips, I. D., Forysiak, W., Ania-Castanon, J. D. & Harper, P., 4 Sep 2017, ICTON 2017 - 19th International Conference on Transparent Optical Networks. IEEE, 8025082

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
    Fibers
    Noise figure

    Performance optimization in ultra-long Raman laser amplified 10x30 GBaud DP-QPSK transmission: Balancing RIN and ASE noise

    Gallazzi, F., Rizzelli, G., Iqbal, M. A., Tan, M., Harper, P. & Ania-Castañón, J. D., 24 Aug 2017, In : Optics Express. 25, 18, p. 21454-21459 6 p.

    Research output: Contribution to journalArticle

    Open Access
    File
    aeroservoelasticity
    quadrature phase shift keying
    Raman lasers
    optimization
    pumps

    Raman fibre laser based amplification in long-haul/unrepeatered coherent transmission systems

    Tan, M., Rosa, P., Iqbal, M. A., Le, S. T., Phillips, I. D., Turitsyn, S. K. & Harper, P., 4 Sep 2017, ICTON 2017 - 19th International Conference on Transparent Optical Networks. IEEE, 8025050

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
    Fiber lasers
    Amplification
    Distributed feedback lasers
    Fiber Bragg gratings
    Quadrature phase shift keying

    RIN and transmission performance improvement using second order and broadband first order forward Raman pumping

    Iqbal, M. A., Tan, M., El-Taher, A. & Harper, P., 17 Nov 2017, 2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017. IEEE, Vol. 2017-November. p. 1-4 4 p. (2017 Opto-Electronics and Communications Conference (OECC) and Photonics Global Conference (PGC)).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
    Pumps
    Amplification
    Open Access
    File
    Pumps
    pumps
    broadband
    augmentation
    aeroservoelasticity

    RIN-penalty mitigation and transmission performance improvement using forward propagated broadband first order Raman pump

    Tan, M., Iqbal, M. A., Krzczanowicz, L., Phillips, I. D., El-Taher, A., Forysiak, W. & Harper, P., 17 Nov 2017, 2017 Opto-Electronics and Communications Conference, OECC 2017 and Photonics Global Conference, PGC 2017. IEEE, Vol. 2017-November. p. 1-3 3 p. (2017 Opto-Electronics and Communications Conference (OECC) and Photonics Global Conference (PGC)).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
    Pumps
    Quadrature phase shift keying
    Wavelength division multiplexing
    Amplification

    RIN reduction technique for dual order forward pumped distributed Raman amplification

    Iqbal, M. A., Tan, M. & Harper, P., 29 Jul 2017, The European Conference on Lasers and Electro-Optics, CLEO_Europe 2017. Optical Society of America, Vol. Part F82-CLEO_Europe 2017.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Noise abatement
    Amplification
    Seed
    Signal to noise ratio
    Pumps
    2016

    4 Tb/s transmission reach enhancement using 10 × 400 Gb/s super-channels and polarization insensitive dual band optical phase conjugation

    Ellis, A. D., Tan, M., Iqbal, M. A., Al-Khateeb, M. A. Z., Gordienko, V., Saavedra Mondaca, G., Fabbri, S., Stephens, M. F. C., McCarthy, M. E., Perentos, A., Phillips, I. D., Lavery, D., Liga, G., Maher, R., Harper, P., Doran, N., Turitsyn, S. K., Sygletos, S. & Bayvel, P., 15 Apr 2016, In : Journal of Lightwave Technology. 34, 8, p. 1717-1723 7 p.

    Research output: Contribution to journalArticle

    Open Access
    File
    phase conjugation
    augmentation
    polarization
    asymmetry

    A comparative analysis of the characterization methods for submicron silicon waveguide propagation loss

    Reja, M. I., Akhtar, J., Malik, M. N., Ahmed, S., Islam, J. & Iqbal, MD. A., 28 Jan 2016, Proceedings of International Conference on Electrical Information and Communication Technology (EICT 2015). IEEE, p. 347-352 6 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Optical devices
    Comparative Analysis
    Waveguide
    Silicon
    Waveguides

    Evaluation of long-haul coherent transmission performance using low RIN forward Raman pump

    Tan, M., Dvoyrin, V., Iqbal, M. A., Turitsyn, S. K. & Harper, P., 5 Nov 2016, Asia Communications and Photonics Conference 2016. Optical Society of America

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Pumps
    Bismuth
    Fiber lasers

    FBG reflectivity impact on RIN in ultralong laser amplifiers

    Rizzelli, G., Iqbal, M. A., Gallazzi, F., Rosa, P., Tan, M., Corredera, P., Ania-Castañón, J. D. & Harper, P., 5 Dec 2016, ECOC 2016; 42nd European Conference on Optical Communication. IEEE, p. 625-627 3 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Light amplifiers
    Pumps

    Impact of front-FBG reflectivity in Raman fiber laser based amplification

    Rizzelli, G., Iqbal, M. A., Rosa, P., Tan, M., Krzczanowicz, L., Phillips, I., Forysiak, W., Ania-Castañón, J. D. & Harper, P., 16 Dec 2016, CLEO: Science and Innovations 2016. Optical Society of America, paper SF1F.6

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Raman lasers
    Fiber lasers
    fiber lasers
    Amplification
    reflectance

    Impact of input FBG reflectivity and forward pump power on RIN transfer in ultralong Raman laser amplifiers

    Rizzelli, G., Iqbal, M. A., Gallazzi, F., Rosa, P., Tan, M., Ania-Castañón, J. D., Krzczanowicz, L., Corredera, P., Phillips, I., Forysiak, W. & Harper, P., 12 Dec 2016, In : Optics Express. 24, 25, p. 29170-29175 6 p.

    Research output: Contribution to journalArticle

    Open Access
    File
    Raman lasers
    amplifiers
    pumps
    reflectance
    quadrature phase shift keying

    Noise performance improvement of broadband distributed raman amplifier using dual order bidirectional pumping

    Iqbal, M. A., Tan, M., Krzczanowicz, L., Rizzelli, G., Gallazzi, F., El-Taher, A., Forysiak, W., Harper, P. & Ania-Castañón, J. D., 5 Nov 2016, Asia Communications and Photonics Conference 2016. Optical Society of America, paper AF4G.2

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Noise figure
    Amplification

    Performance improvement of broadband distributed Raman amplifier using bidirectional pumping with first and dual order forward pumps

    Iqbal, M. A., Martella, G. R., Gallazzi, F., Tan, M., Harper, P. & Ania-Castañón, J. D., 25 Aug 2016, 2016 18th International Conference on Transparent Optical Networks (ICTON). Ferrari, M., Dorosz, D. & Marciniak, M. (eds.). IEEE, 4 p. Tu.P.30

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
    Noise figure
    Pumps
    Bandwidth

    Transmission performance improvement using random DFB laser based Raman amplification and bidirectional second-order pumping

    Tan, M., Rosa, P., Le, S. T., Iqbal, M. A., Phillips, I. D. & Harper, P., 8 Feb 2016, In : Optics Express. 24, 3, p. 2215-2221 7 p.

    Research output: Contribution to journalArticle

    Open Access
    File
    distributed feedback lasers
    pumping
    quadrature phase shift keying
    phase conjugation
    noise intensity
    2015

    Enhanced superchannel transmission using phase conjugation

    Ellis, A. D., Phillips, I. D., Tan, M., Stephens, M. F. C., McCarthy, M. E., Al Kahteeb, M. A. Z., Iqbal, M. A., Perentos, A., Fabbri, S., Gordienko, V., Lavery, D., Liga, G., Saavedra, M. G., Maher, R., Sygletos, S., Harper, P., Doran, N. J., Bayvel, P. & Turitsyn, S. K., 2015, European Conference on Optical Communication, ECOC. IEEE, 3 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
    Optical phase conjugation
    Polarization

    RIN mitigation in second-order pumped Raman fibre laser based amplification

    Tan, M., Rosa, P., Iqbal, M. A., Phillips, I., Nuño, J., Ania-Castañón, J. D. & Harper, P., 2015, Asia Communications and Photonics Conference 2015. Optical Society of America, paper AM2E.6. (OSA Technical Digest).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Fiber lasers
    Amplification