Research Portal

Professor Paul Spencer

Pro Vice-Chancellor [Research]

Affiliations

ORCID: 0000-0002-2791-6719

Contact info

Position: Dean of College of Environmental Sciences and Engineering, Professor

Email: p.spencer@bangor.ac.uk

Phone: (01248) 382738

Location: Room 145, Dean Street

 

Prof Paul S. Spencer received a B.Sc. degree in applied physics and a Ph.D. degree in electronic engineering from the University of Bath, in 1990 and 1994, respectively. From 1994 to 1996, he was a research assistant at the University of Bath. In 1996, he moved to Bangor becoming a lecturer in 1998, a senior lecturer in 2003 and receiving a Personal Chair in 2006. In 2007 he was appointed Head of the School of Electronic Engineering, a post he held for seven years. In 2009 he was appointed Head of the College of Physical and Applied Sciences and in 2017 he was appointed Dean of the College of Environmental Sciences and Engineering

His main research interests are semiconductor laser dynamics, optical feedback effects, pulse propagation, and optical waveguide properties of optoelectronic devices. He has been an author on over 100 journal papers and 140 conference papers and is a regular reviewer archival journals. In 2000 he won the Science, Engineering and Technology (SET) best engineering poster award.

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  1. Article › Research › Peer-reviewed
  2. Published

    Analysis of chaos generated by a modulated self-pulsating laser diode

    Walker, R., Rees, P., Pierce, I., Spencer, P. S. & Roberts, G. W., 8 Apr 2005, In: IEE Proceedings: Optoelectronics. 152, 2, p. 90-96

    Research output: Contribution to journal › Article › peer-review

  3. Published

    Anticipated chaos in a nonsymmetric coupled external-cavity-laser system.

    Rees, P., Spencer, P. S., Pierce, I., Sivaprakasam, S. & Shore, K. A., 1 Sept 2003, In: Physical Review A. 68, 3, p. 033818

    Research output: Contribution to journal › Article › peer-review

  4. Published

    Bias-current dependence of anticorrelation polarization dynamics in vertical-cavity surface-emitting lasers with long external cavity

    Hong, Y., Paul, J., Spencer, P. S. & Shore, K. A., 21 Aug 2006, In: Applied Physics Letters. 89, 8, p. 081123

    Research output: Contribution to journal › Article › peer-review

  5. Published

    Broad tunable photonic microwave generation based on period-one dynamics of optical injection vertical-cavity surface-emitting lasers

    Ji, S., Hong, Y., Spencer, P., Benedikt, J. & Davies, I., 21 Aug 2017, In: Optics Express. 25, 17, p. 19863-1871 9 p.

    Research output: Contribution to journal › Article › peer-review

  6. Published

    Chaos and synchronization of self-pulsating laser diodes

    Jones, R. J., Rees, P., Spencer, P. & Shore, K. A., 1 Feb 2001, In: Journal of the Optical Society of America B: Optical Physics. 18, 2, p. 166-172

    Research output: Contribution to journal › Article › peer-review

  7. Published

    Characteristics of microwave photonic signal generation using vertical-cavity surfaceemitting lasers with optical injection and feedback

    Xu, C., Chang, D., Fan, Y., Ji, S., Zhang, Z., Lin, H., Spencer, P. & Hong, Y., 1 May 2020, In: Journal of the Optical Society of America B: Optical Physics. 37, 5, p. 1394-1400

    Research output: Contribution to journal › Article › peer-review

  8. Published

    Collapse and revival of synchronisation of chaotic diode lasers.

    Arivazhagan, A. C., Sivaprakasam, S., Spencer, P. S. & Shore, K. A., 11 Sept 2008, In: Electronics Letters. 44, 19, p. 1137-1138

    Research output: Contribution to journal › Article › peer-review

  9. Published

    Concealment of Chaos Time-Delay Signature in Three-Cascaded Vertical-Cavity Surface-Emitting Lasers

    Hong, Y., Quirce, A., Wang, B., Ji, S., Panajotov, K. & Spencer, P., 1 Aug 2016, In: IEEE Journal of Quantum Electronics. 52, 8

    Research output: Contribution to journal › Article › peer-review

  10. Published

    Design of a tunable quantum cascade laser with enhanced optical non-linearities.

    Banerjee, S., Spencer, P. S. & Shore, K. A., 1 Feb 2006, In: IEE Proceedings: Optoelectronics. 153, 1, p. 40-42

    Research output: Contribution to journal › Article › peer-review

  11. Published

    Dynamic regimes in semiconductor lasers subject to incoherent optical feedback

    Ju, R. & Spencer, P. S., 1 Aug 2005, In: Journal of Lightwave Technology. 23, 8, p. 2513-2523

    Research output: Contribution to journal › Article › peer-review

  12. Published

    Enhanced Flat Broadband Optical Chaos Using Low-Cost VCSEL and Fiber Ring Resonator

    Hong, Y., Chen, X., Spencer, P. & Shore, K., 6 Jan 2015, In: IEEE Journal of Quantum Electronics. 51, 3, p. 1200106

    Research output: Contribution to journal › Article › peer-review

  13. Published

    Enhanced chaos synchronization in unidirectionally coupled vertical-cavity surface-emitting semiconductor lasers with polarization-preserved injection

    Hong, Y., Lee, M. W., Paul, J., Spencer, P. S. & Shore, K. A., 15 Mar 2008, In: Optics Letters. 33, 6, p. 587-589

    Research output: Contribution to journal › Article › peer-review

  14. Published

    Enhancement of chaotic signal bandwidth in vertical-cavity surface-emitting lasers with optical injection

    Hong, Y., Spencer, P. S. & Shore, K. A., 22 Feb 2012, In: Journal of the Optical Society of America B: Optical Physics. 29, 3, p. 415-419

    Research output: Contribution to journal › Article › peer-review

  15. Published

    Experimental and theoretical study of dynamical hysteresis and scaling laws in the polarization switching of vertical-cavity surface-emitting lasers

    Paul, J., Masoller, C., Mandel, P., Hong, Y., Spencer, P. S. & Shore, K. A., 1 Apr 2008, In: Physical Review A. 77, 4, p. 043803

    Research output: Contribution to journal › Article › peer-review

  16. Published

    Experimental study of polarization switching of vertical-cavity surface-emitting lasers as a dynamical bifurcation

    Paul, J., Masoller, C., Hong, Y., Spencer, P. S. & Shore, K. A., 15 Mar 2006, In: Optics Letters. 31, 6, p. 748-750

    Research output: Contribution to journal › Article › peer-review

  17. Published

    Flat Broadband Chaos in Vertical-Cavity Surface-Emitting Lasers Subject to Chaotic Optical Injection

    Hong, Y., Spencer, P. S. & Shore, K. A., 1 Dec 2012, In: IEEE Journal of Quantum Electronics. 48, 12, p. 1536-1541

    Research output: Contribution to journal › Article › peer-review

  18. Published

    Flat broadband chaos generation in a discrete-mode laser subject to optical feedback

    Chang, D., Zhong, Z., Tang, J., Spencer, P. & Hong, Y., 21 Dec 2020, In: Optics Express. 28, 26, p. 39076-39083

    Research output: Contribution to journal › Article › peer-review

  19. Published

    Frequency domain analysis of the chaotic synchronization of injection-locked semiconductor lasers.

    Lea, S. J. & Spencer, P. S., 1 Mar 2008, In: Optical and Quantum Electronics. 40, 2-4, p. 97-108

    Research output: Contribution to journal › Article › peer-review

  20. Published

    GHz Bandwidth Message Transmission Using Chaotic Vertical-Cavity Surface-Emitting Lasers

    Hong, Y., Lee, M. W., Paul, J., Spencer, P. S. & Shore, K. A., 15 Nov 2009, In: Journal of Lightwave Technology. 27, 22, p. 5099-5105

    Research output: Contribution to journal › Article › peer-review

  21. Published

    Identification of the optimum time-delay for chaos synchronization regimes of semiconductor lasers

    Peters-Flynn, S., Spencer, P., Sivaprakasam, S., Pierce, I. & Shore, A., Apr 2006, In: IEEE Journal of Quantum Electronics. 42, 4, p. 427-434

    Research output: Contribution to journal › Article › peer-review

  22. Published

    Impact of orthogonal optical feedback on the polarization switching of vertical-cavity surface-emitting lasers

    Paul, J., Masoller, C., Hong, Y., Spencer, P. S. & Shore, K. A., 1 Aug 2007, In: Journal of the Optical Society of America B: Optical Physics. 24, 8, p. 1987-1994

    Research output: Contribution to journal › Article › peer-review

  23. Published

    Influence of low-frequency modulation on polarization switching of VCSELs subject to optical feedback

    Hong, Y., Paul, J., Spencer, P. S. & Shore, K. A., 1 Jan 2008, In: IEEE Journal of Quantum Electronics. 44, 1-2, p. 30-35

    Research output: Contribution to journal › Article › peer-review

  24. Published

    Inverse synchronisation in semiconductor laser diodes

    Sivaprakasam, S., Pierce, I., Rees, P., Spencer, P., Shore, K. A. & Valle, A., 31 May 2001, In: Physical Review A. 64, 1, 013805.

    Research output: Contribution to journal › Article › peer-review

  25. Published

    Investigation of polarization bistability in vertical-cavity surface-emitting lasers subjected to optical feedback

    Hong, Y., Ju, R., Spencer, P. & Shore, K. A., May 2005, In: IEEE Journal of Quantum Electronics. 41, 5, p. 619-624

    Research output: Contribution to journal › Article › peer-review

  26. Published

    Optical feedback dependence of anticorrelation polarization dynamics in vertical-cavity surface-emitting lasers

    Hong, Y., Paul, J., Spencer, P. S. & Shore, K. A., 1 Nov 2006, In: Journal of the Optical Society of America B: Optical Physics. 23, 11, p. 2285-2290

    Research output: Contribution to journal › Article › peer-review

  27. Published

    Optical frequency-domain ranging using a frequency-shifted feedback distributed-feedback laser.

    Paul, J., Hong, Y. H., Spencer, P. S., Pierce, I. & Shore, K. A., 1 Dec 2007, In: IET Optoelectronics. 1, 6, p. 277-279

    Research output: Contribution to journal › Article › peer-review

  28. Published

    Optically modulated chaotic communication scheme using external-cavity length as a key to security

    Paul, J., Sivaprakasam, S., Spencer, P. S. & Shore, K. A., 1 Mar 2003, In: Journal of the Optical Society of America B: Optical Physics. 20, 3, p. 497-503

    Research output: Contribution to journal › Article › peer-review

  29. Published

    Optimization of adaptively modulated optical OFDM modems for multimode fiber-based local area networks

    Jin, X., Tang, J., Spencer, P. S. & Shore, K. A., 1 Mar 2008, In: Journal of Optical Networking. 7, 3, p. 198-214

    Research output: Contribution to journal › Article › peer-review

  30. Published

    Polarization-preserved and polarization-rotated synchronization of chaotic vertical-cavity surface-emitting lasers

    Ju, R., Spencer, P. & Shore, K. A., 1 Dec 2005, In: IEEE Journal of Quantum Electronics. 41, 12, p. 1461-1467

    Research output: Contribution to journal › Article › peer-review

  31. Published

    Polychromatic coupled cavity model of passive structures.

    Perkins, D., Spencer, P. S. & Rees, P., 1 Apr 2005, In: IEE Proceedings: Optoelectronics. 152, 2, p. 58-65

    Research output: Contribution to journal › Article › peer-review

  32. Published

    Power and frequency dependence of hysteresis in optically bistable injection-locked VCSELs.

    Hong, Y., Spencer, P. & Shore, K. A., 26 Apr 2001, In: Electronics Letters. 37, 9, p. 569-570

    Research output: Contribution to journal › Article › peer-review

  33. Published

    Root locus method for predicting the stability of laser diodes with optical feedback

    Pierce, I., Rees, P., Spencer, P. & Shore, K. A., 8 Jun 2000, In: Electronics Letters. 36, 12, p. 1029-1031

    Research output: Contribution to journal › Article › peer-review

  34. Published

    Semiconductor lasers subject to polarisation-rotated optical feedback.

    Ju, R., Hong, Y. & Spencer, P. S., 1 Jun 2006, In: IEE Proceedings: Optoelectronics. 153, 3, p. 131-137

    Research output: Contribution to journal › Article › peer-review

  35. Published

    Simple and accurate optical frequency domain ranging using off-the-shelf DFB lasers subject to frequency-shifted optical feedback

    Paul, J., Hong, Y., Spencer, P., Pierce, I. & Shore, K. A., 1 Nov 2007, In: IEEE Photonics Technology Letters. 19, 21-24, p. 1708-1710

    Research output: Contribution to journal › Article › peer-review

  36. Published

    Statistical Investigations of the Transmission Performance of Adaptively Modulated Optical OFDM Signals in Multimode Fiber Links

    Jin, X. Q., Tang, J., Qiu, K. & Spencer, P. S., 1 Sept 2008, In: Journal of Lightwave Technology. 26, 17-20, p. 3216-3224

    Research output: Contribution to journal › Article › peer-review

  37. Published

    Synchronisation recovery in unidirectionally coupled semiconductor lasers

    Peters-Flynn, S., Pierce, I., Spencer, P. S. & Rees, P., 13 Feb 2006, In: IEE Proceedings: Optoelectronics. 153, 1, p. 8-12

    Research output: Contribution to journal › Article › peer-review

  38. Published

    The effects of polarization-resolved optical feedback on the relative intensity noise and polarization stability of vertical-cavity surface-emitting lasers

    Hong, Y., Paul, J., Spencer, P. & Shore, K. A., 7 Aug 2006, In: Journal of Lightwave Technology. 24, 8, p. 3210-3216

    Research output: Contribution to journal › Article › peer-review

  39. Published

    Thermal effects and dynamical hysteresis in the turn-on and turn-off vertical-cavity surface-emitting lasers.

    Hong, Y., Masoller, C., Torre, M. S., Priyadarshi, S., Qader, A. A., Spencer, P. S. & Shore, K. A., 1 Nov 2010, In: Optics Letters. 35, 21, p. 3688-3690

    Research output: Contribution to journal › Article › peer-review

  40. Published

    Transmission Performance of Adaptively Modulated Optical OFDM Modems Using Subcarrier Modulation over Worst-Case Multimode Fibre Links

    Zheng, X., Tang, J. & Spencer, P. S., 10 Oct 2008, In: IEEE Communications Letters. 12, 10, p. 788-790

    Research output: Contribution to journal › Article › peer-review

  41. Published

    Tunable quantum cascade lasers with phase-matched third harmonic generation

    Banerjee, S., Spencer, P. & Shore, K. A., 3 Aug 2006, In: Applied Physics Letters. 89, 5, p. 051113

    Research output: Contribution to journal › Article › peer-review

  42. Published

    VCSEL polarization control by optical injection

    Bandyopadhyay, S., Hong, Y., Spencer, P. & Shore, K. A., 1 Oct 2003, In: Journal of Lightwave Technology. 21, 10, p. 2395-2404

    Research output: Contribution to journal › Article › peer-review

  43. Published

    Wideband Chaos With Time-Delay Concealment in Vertical-Cavity Surface-Emitting Lasers With Optical Feedback and Injection

    Hong, Y., Spencer, P. S. & Shore, K. A., 5 Feb 2014, In: IEEE Journal of Quantum Electronics. 50, 4, p. 236-242

    Research output: Contribution to journal › Article › peer-review

  44. Special issue › Research › Peer-reviewed
  45. Published

    Stabilization of Photonic Microwave Generation in Vertical-Cavity Surface-Emitting Lasers with Optical Injection and Feedback

    Hong, Y., Ji, S., Xue, C., Valle, A., Spencer, P. & Li, H., 1 Oct 2018, In: Journal of Lightwave Technology. 36, 19, p. 4347-4353

    Research output: Contribution to journal › Special issue › peer-review

  46. Paper › Research › Not peer-reviewed
  47. Published

    Analysis of Experimental Data from a Chaos Communication Channel.

    Lea, S. & Spencer, P. S., 1 Jan 2009.

    Research output: Contribution to conference › Paper

  48. Published

    Analysis of spatial field profile in integrated external cavity diode lasers.

    Causa, F., Rees, P., Spencer, P. S. & Sarma, J., 1 Apr 2004.

    Research output: Contribution to conference › Paper

  49. Published

    Anticipating synchronization in a bi-directional laser diode configuration.

    Sivaprakasam, S., Spencer, P. S., Rees, P., Pierce, I. & Shore, K. A., 1 Jan 2002.

    Research output: Contribution to conference › Paper

  50. Published

    Anticorrelation polarization dynamics in VCSELs

    Hong, Y., Paul, J., Spencer, P. S. & Shore, K. A., 11 Sept 2006.

    Research output: Contribution to conference › Paper

  51. Published

    Chaos synchronisation and communication.

    Spencer, P. S., Shore, K. A., Sivaprakasam, S., Pierce, I., Peters-Flynn, S., Ju, R., Paul, J., Lee, M. W. & Rees, P., 1 Aug 2006.

    Research output: Contribution to conference › Paper

  52. Published

    Chaotic communications with external cavity laser diode.

    Shore, K. A., Lee, M. W., Paul, J., Hong, Y., Torre, M., Masoller, M., Ju, R. & Spencer, P. S., 1 Dec 2004.

    Research output: Contribution to conference › Paper

  53. Published

    Communicating with Chaos.

    Sivaprakasam, S., Pierce, I., Spencer, P. S., Jones, R. J., Rees, P. & Shore, K. A., 1 Jan 2001.

    Research output: Contribution to conference › Paper

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