Photo of John Williams
    • School of Engineering and Applied Science, Aston University

      B4 7ET Birmingham

      United Kingdom

    19942019
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    Research Output 1994 2019

    Filter
    Conference contribution
    2016

    Experimental demonstration of real-time correction of writing errors during fibre-Bragg grating fabrication

    Gbadebo, A., Turitsyna, E. & Williams, J., 8 Sep 2016, Photonics and Fiber Technology 2016 (ACOFT, BGPP, NP). Optical Society of America, BTh1B.2

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

    Fiber Bragg gratings
    Demonstrations
    Fabrication
    Processing
    2015

    Experimental comparison of differing design approaches for multichannel fibre Bragg gratings

    Gbadebo, A. A., Turitsyna, E. G. & Williams, J. A. R., 2015, The European Conference on Lasers and Electro-Optics 2015. Optical Society of America, paper CE_1_4

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

    2014

    Evaluation of impact of beam size on fibre Bragg grating fabrication

    Gbadebo, A., Turitsyna, E. & Williams, J., 2014, Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides 2014. Optical Society of America, paper BW1D.5

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

    Open Access
    File
    Bragg gratings
    gratings
    fabrication
    fibers
    evaluation

    Evaluation of Impact of Beam Size on Fibre Bragg Grating Fabrication

    Gbadebo, A. A., Williams, J. A. & Turitsyna, E., 27 Jul 2014, Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides 2014. Optical Society of America, BW1D.5

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

    chirp
    visibility
    Bragg gratings
    fabrication
    fibers
    2013

    Fibre grating filters for suppression of near infrared OH emission lines

    Gbadebo, A., Turitsyna, E., Shu, X., Williams, J. & Turitsyn, S., 2013, 39th European Conference and exhibition on Optical Communication (ECOC 2013). Red Hook, NY (US): IET, p. 852-854 3 p. (IET conference publications; vol. 622).

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

    Notch filters
    Fiber Bragg gratings
    Optical fibers
    Masks
    Infrared radiation
    2010

    3D reconstruction of complex dielectric function of the glass during the femtosecond micro-fabrication

    Turchin, A. V., Dubov, M. & Williams, J. A., 2010, Advanced photonics and renewable energy. Optical Society of America, paper BWD7. (OSA technical digest).

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

    inverse scattering
    shot
    far fields
    distribution functions
    fabrication
    2008

    Mask-less lithography for fabrication of optical waveguides

    Dubov, M., Natarajan, S. R., Williams, J. A. R. & Bennion, I., 15 Feb 2008, Commercial and biomedical applications of ultrafast lasers VIII. Neev, J., Nolte, S., Heisterkamp, A. & Schaffer, C. B. (eds.). SPIE, Vol. 6881. p. 688110 (SPIE proceedings; vol. 6881).

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

    Open Access
    File
    Ultrafast lasers
    Optical waveguides
    Ultrashort pulses
    optical waveguides
    Lithography
    2007

    An optical fiber Bragg grating tactile sensor

    Cowie, B., Allsop, T. D. P., Williams, J., Webb, D., Bennion, I. & Fisher, M., May 2007, Optical sensing technology and applications. Baldini, F., Homola, J., Lieberman, R. A. & Miler, M. (eds.). Czech Republic: SPIE, 8 p. 65850I. (SPIE proceedings; vol. 6585).

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

    Open Access
    File
    Fiber Bragg gratings
    Bragg gratings
    Optical fibers
    optical fibers
    Sensors

    Wideband optical single sideband generation

    Zhang, W., Williams, J. A. R. & Bennion, I., 1 Dec 2007, Proceedings of the 36th European Microwave Conference, EuMC 2006. IEEE, p. 612-613 2 p. 4057890

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

    sidebands
    Multiplexing
    broadband
    spectral bands
    multiplexing
    2006

    Impact of fiber nonlinearity in dispersion compensated double-sideband modulated radio-over-fiber links

    Won, P. C., Zhang, W., Williams, J. A. R. & Bennion, I., 1 Dec 2006, Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006. 4628427

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

    Radio-over-fiber
    Dispersion compensation
    sidebands
    Telecommunication links
    nonlinearity

    Optical single sideband generation with full RF-band operation

    Zhang, W., Williams, J. A. R. & Bennion, I., 1 Dec 2006, Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006. 4628430

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

    sidebands
    Multiplexing
    spectral bands
    multiplexing
    retarding

    Self-phase modulation dependent dispersion mitigation in high power SSB and DSB + dispersion compensated modulated radio-over-fiber links

    Won, P. C., Zhang, W. & Williams, J. A. R., Jul 2006, 2006 IEEE MTT-S: international microwave symposium digest. Sowers, J. & Thorburn, M. (eds.). IEEE, p. 1947-1950 4 p. THPH-04. (IEEE - MTTS International Microwave Symposium. Digest).

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

    Self phase modulation
    Radio-over-fiber
    Chromatic dispersion
    Fibers
    Microwaves

    Third order intermodulation on nonlinear dispersive radio-on-fiber links

    Won, P. C., Zhang, W. & Williams, J. A. R., 1 May 2006, Optics InfoBase Conference Papers. Optical Society of America

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

    Intermodulation distortion
    Intermodulation
    Chromatic dispersion
    intermodulation
    penalties
    2005

    Imperfect mitigation of dispersion induced power penalty in high power single-sideband modulated radio-on-fiber links

    Won, P. C., Zhang, W., Williams, J. A. R. & Bennion, I., 31 Oct 2005, Quantum Electronics and Laser Science Conference (QELS). Optical Society of America, Vol. 3. p. 1741-1743 3 p. JThE61

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

    Telecommunication links
    Modulation
    Fibers

    Third order intermodulation on nonlinear dispersive radio-on-fiber links

    Won, P. C., Zhang, W. & Williams, J. A. R., 31 Oct 2005, Quantum Electronics and Laser Science Conference (QELS). Vol. 3. p. 1699-1701 3 p. JThE47

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

    Intermodulation distortion
    Intermodulation
    Chromatic dispersion
    Telecommunication links
    Fibers
    2004

    Analysis of frequency response of a microwave photonic filter using superstructured fiber Bragg grating

    Zhang, W., Williams, J. A. R. & Bennion, I., 1 Dec 2004, Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS. Vol. 1. p. 276-277 2 p.

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

    Fiber Bragg gratings
    Photonics
    Frequency response
    Microwaves
    Bandwidth
    2003

    A nonreciprocal wavelength-interleaving bidirectional coherent fiber transversal filter

    Lai, Y., Zhang, W., Williams, J. A. R. & Bennion, I., Dec 2003, The 5th Pacific Rim Conference on Lasers and Electro-Optics, 2003. CLEO/Pacific Rim 2003. IEEE, Vol. 1. p. 384 1 p. W4J-(8)-3

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

    Transversal filters
    Chromatic dispersion
    Birefringence
    filters
    Wavelength

    An optical millimeter wave fiber laser

    Lai, Y., Zhang, W., Williams, J. A. R. & Bennion, I., Mar 2003, Optical Fiber Communications Conference, 2003. Sawchuk, A. A. (ed.). IEEE, Vol. 1. p. 238-239 2 p. paper TuL5. (Techincal digest).

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

    Fiber lasers
    Millimeter waves
    Distributed feedback lasers
    Laser modes
    Linewidth

    An optical pump controlled tunable phase-shifted fiber grating transmission filter

    Lai, Y., Zhang, W., Zhang, L., Williams, J. A. R. & Bennion, I., Mar 2003, Optical Fiber Communications Conference, 2003. Sawchuk, A. A. (ed.). IEEE, Vol. 1. p. 35-37 3 p. paper MF32. (Techincal digest).

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

    Pumps
    Fibers
    Wavelength
    Precipitation (meteorology)
    Cost effectiveness

    Application of superimposed grating structures for optimisation of fibre laser performance

    Lai, Y., Zhang, W., Williams, J. A. R. & Bennion, I., Oct 2003, Proceedings : Institute of Physics Meeting on In-Fibre Bragg Gratings and Special Fibres-Photonex Europe 2003. Institute of Physics

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

    Distributed temperature sensing based on a chirped fibre Bragg grating

    Won, P. C., Leng, J., Lai, Y. & Williams, J. A. R., Oct 2003, Proceedings : Institute of Physics Meeting on In-Fibre Bragg Gratings and Special Fibres-Photonex Europe 2003. Institute of Physics

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

    High performance microwave photonic response of superstructured fibre Bragg grating with designed apodisation function

    Leng, J. S., Zhang, W. & Williams, J. A. R., Oct 2003, The 16th Annual Meeting of the IEEE Lasers and Electro-Optics Society, 2003. LEOS 2003. IEEE, Vol. 2. p. 782-783 2 p. (Annual meeting IEEE Lasers and Electro-Optics Society).

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

    Fiber Bragg gratings
    Photonics
    Microwaves

    Optical generation of millimetre wave signal using a co-located dual distributed feedback fibre laser

    Lai, Y. C., Zhang, W. & Williams, J. A. R., Apr 2003, 1st International Conference on Optical Communications and Networks (ICOCN 2002). Omidyar, C. G., Shiraz, H. G. & Zhong, W. D. (eds.). World Scientific, p. 223-226 4 p.

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

    Optical multichannel flattop filter with complementary outputs for DWDM applications

    Lai, Y. C., Zhang, W., Williams, J. A. R. & Bennion, I., Apr 2003, 1st international conference on Optical Communications and Networks. Omidyar, C. G., Shiraz, H. G. & Zhong, W. D. (eds.). World Scientific, p. 163-166 4 p.

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

    Optimization of DFB fiber laser performance based on a superimposed cavities structure

    Lai, Y., Zhang, W., Williams, J. A. R. & Bennion, I., Dec 2003, The 5th Pacific Rim Conference on Lasers and Electro-Optics, 2003. CLEO/Pacific Rim 2003. IEEE, Vol. 2. p. 431 1 p.

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

    Distributed feedback lasers
    Fiber lasers
    Laser modes
    fiber lasers
    Pumps
    2002

    Accurate differential group delay measurement of narrowband fiber devices with immunity to environmental perturbation

    Lai, Y., Zhang, W., Williams, J. A. R., Sugden, K. & Bennion, I., 2002, 2002 IEEE/ILEOS annual meeting conference proceedings: the 15th annual meeting of the IEEE Lasers & Electro-Optics Society. IEEE, Vol. 2. p. 811-812 2 p. ThUl. (IEEE Lasers and Electro-Optics Society. Annual Meeting).

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

    Group delay
    Fibers
    Phase shift
    Modulation
    Polarization

    A novel all fiber microwave transversal filter with complementary outputs

    Lai, Y., Zhang, W. & Williams, J. A. R., 2002, 2002 International Topical Meeting on Microwave Photonics, MWP 2002 - Technical Digest. IEEE, p. 173-176 4 p. P2-1. (Techincal digest).

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

    Transversal filters
    Microwave filters
    Fibers
    Electric delay lines
    Birefringence

    A novel dual complementary output optical fiber transversal filter for DWDM applications

    Lai, Y., Zhang, W., Williams, J. A. R. & Bennion, I., 2002, 2002 IEEE/ILEOS annual meeting conference proceedings: the 15th annual meeting of the IEEE Lasers & Electro-Optics Society. IEEE, Vol. 2. p. 659-660 2 p. ThEl. (IEEE Lasers and Electro-Optics Society. Annual Meeting).

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

    Transversal filters
    Dense wavelength division multiplexing
    Optical fibers
    Fibers

    Implementation of microwave photonic filtering using a profiled superstructured fiber Bragg grating and dispersive fiber

    Gwandu, B. A. L., Zhang, W. & Williams, J. A. R., 2002, International Topical Meeting on Microwave Photonics 2002. IEEE, p. 113-116 4 p. (Techincal digest).

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

    Bragg gratings
    photonics
    microwaves
    fibers
    taps
    2001

    Optical generation of tunable microwave signal from a dual mode fiber grating DFB laser

    Lai, Y. C., Zhang, W. & Williams, J. A. R., 1 Oct 2001, 2001 International Topical Meeting on Microwave Photonics, MWP 2001. IEEE, Vol. 1. p. 101-103 3 p. 981806. (Techn Digest).

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

    Distributed feedback lasers
    Laser modes
    Linewidth
    Tuning
    Microwaves
    1998

    Apodised fibre Bragg grating design subject to length constraints

    Chisholm, K. E., Everall, L. A., Williams, J. A. R., Bennion, I., Liu, X., Rue, R. M. D. L. & Aitchison, J. S., Sep 1998, 24th European Conference on Optical Communication, 1998. IEEE, Vol. 1. p. 385-386 2 p.

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

    Fiber Bragg gratings
    Bandwidth
    Fabrication

    Characteristics of linearly chirped and functionally apodised phase masks and reflection spectra of UV written fibre gratings

    Liu, X., Aitchison, J. S., Thoms, S., De La Rue, R. M., Williams, J. A. R., Everall, L. A. & Bennion, I., Sep 1998, Conference on Lasers and Electro-Optics Europe, 1998. 1998 CLEO/Europe. Glasgow: IEEE, p. 145 1 p.

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

    1994

    The generation and propagation of quasi-continuous trains of dark soliton-like pulses in 2km of optical fiber

    Williams, J. A. R., Allen, K. M., Doran, N. & Emplit, P. H., Aug 1994, Proceedings of 5th EQEC. p. 270-271 2 p. QThO3

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