Dr Roger Giddings

Senior Lecturer in Optical Communications & DSP

  1. Published

    Digital Orthogonal Filter-Enabled Optical OFDM Channel Multiplexing for Software-Reconfigurable Elastic PONs

    Tang, J., Bolea, M., Giddings, R. P. & Tang, J. M., 16 Jan 2014, In: Journal of Lightwave Technology. 32, 6, p. 1200-1206

    Research output: Contribution to journalArticlepeer-review

  2. Published

    First experimental demonstration of 6Gb/s real-time optical OFDM transceivers incorporating channel estimation and variable power loading.

    Tang, J., Giddings, R. P., Jin, X. Q. & Tang, J. M., 1 Oct 2009, In: Optics Express. 17, 22, p. 19727-19738

    Research output: Contribution to journalArticlepeer-review

  3. Published

    Stage-dependent minimum bit resolution maps of full-parallel pipelined FFT/IFFT architectures incorporated in real-time optical orthogonal frequency division multiplexing transceivers

    Tang, J., Zhang, J., Yuan, W., Wang, K., Cao, B., Giddings, R. P., Wang, M. & Tang, J. M., 27 Aug 2014, In: Journal of Engineering. 2014, p. 1-8

    Research output: Contribution to journalArticlepeer-review

  4. Published

    Wavelength reused bidirectional transmission of adaptively modulated optical OFDM signals in WDM-PONs incorporating SOA and RSOA intensity modulators.

    Tang, J., Wei, J. L., Hugues-Salas, E., Giddings, R. P., Jin, X. Q., Zheng, X., Mansoor, S. P. & Tang, J. M., 10 May 2010, In: Optics Express. 18, 10, p. 9791-9808

    Research output: Contribution to journalArticlepeer-review

  5. Published
  6. Published

    Intra-Cavity Chromatic Dispersion Impacts on 10-Gb/s Optical OFDM Transmissions Over 25-km Dual-RSOA-Based Self-Seeded PON Systems

    Tang, J., Deng, M. L., Cao, B. Y., Giddings, R. P., Dong, Y. X., Jiang, N., Nesset, D., Qiu, K. & Tang, J. M., 18 Dec 2014, In: IEEE Photonics Journal. 7, 1

    Research output: Contribution to journalArticlepeer-review

  7. Published

    RSOA Intensity Modulator Frequency Chirp-Enabled 40Gb/s over 25km IMDD PON Systems

    Tang, J., Giddings, R. P., Tang, J. M., Cao, B., Deng, M., Giddings, R., Duan, X., Zhang, Q. & Wang, M., 22 Mar 2015.

    Research output: Contribution to conferencePaper

  8. Published

    Adaptively modulated optical OFDM modems utilizing RSOAs as intensity modulators in IMDD SMF transmission systems.

    Tang, J., Wei, J. L., Hamie, A., Giddings, R. P., Hugues-Salas, E., Zheng, X., Mansoor, S. P. & Tang, J. M., 8 Apr 2010, In: Optics Express. 18, 8, p. 8556-8573

    Research output: Contribution to journalArticlepeer-review

  9. Published

    Experimental demonstration of real-time 3Gb/s optical OFDM transceivers.

    Tang, J., Giddings, R. P., Jin, X. Q. & Tang, J. M., 14 Sept 2009, In: Optics Express. 17, 19, p. 16654-16665

    Research output: Contribution to journalArticlepeer-review

  10. Published

    Real-time optical OFDM transceivers for PON applications

    Tang, J. M., Giddings, R. P., Jin, X. Q., Wei, J. L., Zheng, X., Giacoumidis, E., Hugues-Salas, E., Hong, Y., Shu, C., Groenewald, J. & Muthusamy, K., 2011, p. 1-3. 3 p.

    Research output: Contribution to conferencePaperpeer-review

  11. Published

    Real-time optical OFDM and colorless OOFDMA PONs

    Tang, J. M., Giddings, R. P., Hugues-Salas, E. & Hong, Y., 2012, p. 1. 1 p.

    Research output: Contribution to conferencePaperpeer-review

  12. Published

    Subcarrier Index-Power Modulated Optical OFDM (SIPM-OOFDM) for IMDD PON Systems

    Tang, J., Halabi, F., Chen, L., Parre, S., Barthomeuf, S., Giddings, R. P. & Aupetit-Berthelemot, C., 22 Jul 2016.

    Research output: Contribution to conferencePaperpeer-review

  13. Published

    Experimental Demonstration of DSP-enabled Drop Operations of Flexible ROADMs Excluding Optical Filters and O-E-O Conversions

    Tang, J., Duan, X., Deng, M., Jin, W., Giddings, R. P. & Mansoor, S., 22 Mar 2016.

    Research output: Contribution to conferencePaperpeer-review

  14. Accepted/In press
  15. Accepted/In press
  16. E-pub ahead of print

    Seamlessly Converged Fiber-Wireless Access Networks with Dynamic Sub-wavelength Switching and Tunable Photonic mmWave Generation

    Vallejo Castro, L., Gonem, O., Jin, W., Giddings, R., Chen, L., Huang, Y., Yi, X., Faruk, M. S. & Tang, J., 15 Nov 2024, (E-pub ahead of print) In: Journal of Lightwave Technology.

    Research output: Contribution to journalArticlepeer-review

  17. Published

    Wavelength reused bidirectional adaptively modulated optical OFDM transmission in colourless WDM-PONs

    Wei, J. L., Hugues-Salas, E., Giddings, R. P., Jin, X. Q., Zheng, X. & Tang, J. M., 2010, p. 1-3. 3 p.

    Research output: Contribution to conferencePaperpeer-review

  18. Published

    Improved power budgets of end-to-end real-time optical OFDM PON systems using wavelength-offset optical filtering

    Wei, J. L., Hugues-Salas, E., C, S., [No Value], X., [Unknown], N., Jin, X. Q., Giddings, R. P., Pierce, I., Ortega, B., Shu, C. & Tang, J. M., 2012, p. 1-3. 3 p.

    Research output: Contribution to conferencePaperpeer-review

  19. Published

    Wavelength-offset optical filtering induced power budget improvements in end-to-end real-time optical OFDM PON systems

    Wei, J. L., Hugues-Salas, E., Jin, X. Q., Giddings, R. P., Pierce, I., Ortega, B. & Tang, J. M., 2012, p. 1-3. 3 p.

    Research output: Contribution to conferencePaperpeer-review

  20. Published

    Wavelength reused bidirectional transmission of adaptively modulated optical OFDM signals in SOA/RSOA intensity modulator-based WDM-PONs

    Wei, J. L., Hugues-Salas, E., Giddings, R. P., Jin, X. Q., Zheng, X. & Tang, J. M., Jun 2010, p. 1-9. 9 p.

    Research output: Contribution to conferencePaperpeer-review

  21. Published

    SOA intensity modulator-enabled colourless transmission of adaptively modulated optical OFDM signals for WDM-PONs

    Wei, J. L., Yang, X. L., Giddings, R. P., Tang, J. M. & Shore, K. A., 2009, p. 1-2. 2 p.

    Research output: Contribution to conferencePaperpeer-review

  22. Published

    Significant improvements in optical power budgets of real-time optical OFDM PON systems

    Wei, J. L., Sanchez, C., Giddings, R. P., Hugues-Salas, E. & Tang, J. M., Sept 2010, In: Optics Express. 18, 20, p. 20732-20745 14 p.

    Research output: Contribution to journalArticlepeer-review

  23. Published

    Semiconductor Optical Amplifier-Enabled Intensity Modulation of Adaptively Modulated Optical OFDM Signals in SMF-Based IMDD Systems

    Wei, J., Hamie, A., Giddings, R. P. & Tang, J., 15 Aug 2009, In: Journal of Lightwave Technology. 27, 16, p. 3679-3689

    Research output: Contribution to journalArticlepeer-review

  24. Published

    IFFT Stage-dependent Minimum Bit Resolution Maps for Real-time Optical OFDM Transceivers

    Zhang, J., Giddings, R. P., Tang, J., Zhang, Q., Yuan, W., Giddings, R. & Wang, M., 9 Mar 2014.

    Research output: Contribution to conferencePaper

  25. Published

    Stage-dependent DSP Operation Range Clipping-induced Bit Resolution Reductions of Full Parallel 64-point FFTs Incorporated in FPGA-based Optical OFDM Receivers

    Zhang, J., Tang, Z., Giddings, R., Wu, Q., Wang, W., Cao, B., Zhang, Q. & Tang, J. M., 15 Aug 2016, In: Journal of Lightwave Technology. 34, 16, p. 3752-3760

    Research output: Contribution to journalArticlepeer-review

  26. Published

    A Clock-gating-based Energy-efficient Scheme for ONUs in Real-time IMDD OFDM-PONs

    Zhang, J., Zhao, J., Huang, H., Ye, N., Giddings, R., Li, Z., Qin, D., Zhang, Q. & Tang, J., 15 Jul 2020, In: Journal of Lightwave Technology. 38, 14, p. 3573-3583

    Research output: Contribution to journalArticlepeer-review

  27. Published

    Analytical Solution of Stage-dependent Bit Resolution of Full Parallel Variable Point FFTs for Real-time DSP Implementation

    Zhang, J., Wang, J., Giddings, R., Zhang, Q., Peng, J., Chen, J. & Tang, J., 15 Nov 2018, In: Journal of Lightwave Technology. 36, 22, p. 5177-5187

    Research output: Contribution to journalArticlepeer-review

  28. Published

    Record-high and robust 17.125 Gb/s gross-rateover 25 km SSMF transmissions of real-time dual-band optical OFDM signals directly modulated by 1 GHz RSOAs

    Zhang, Q. W., Hugues-Salas, E., Ling, Y., Zhang, H. B., Giddings, R. P., Zhang, J. J., Wang, M. & Tang, J. M., 2014, In: Optics Express. 22, 6, p. 6339-6348 10 p.

    Research output: Contribution to journalArticlepeer-review

  29. Published

    Experimental demonstrations of record high REAM intensity modulator-enabled 19.25Gb/s real-time end-to-end dual-band optical OFDM colorless transmissions over 25km SSMF IMDD systems

    Zhang, Q. W., Hugues-Salas, E., Giddings, R. P., Wang, M. & Tang, J. M., 2013, In: Optics Express. 21, 7, p. 9167-9179 13 p.

    Research output: Contribution to journalArticlepeer-review

  30. Published

    Input/output reconfigurable adaptively modulated optical OFDM modems using subcarrier modulation

    Zheng, X., Wei, J. L., Yang, X. L., Giddings, R. P., Tang, J. M. & Shore, K. A., 2009, p. 1-2. 2 p.

    Research output: Contribution to conferencePaperpeer-review

  31. Published

    Simple adaptively modulated optical OFDM modems using subcarrier modulation with input/output reconfigurability

    Zheng, X., Wei, J. L., Giddings, R. P. & Tang, J. M., Jun 2010, p. 1-8. 8 p.

    Research output: Contribution to conferencePaperpeer-review

  32. Published

    Experimental Demonstrations of Concurrent Adaptive Inter-ONU and Upstream Communications in IMDD Hybrid SSB OFDM-DFMA PONs

    Zhong, Z., Jin, W., He, J., Chang, D., Giddings, R., Hong, Y., O'Sullivan, M., Durrant, T., Mariani, G., Trewern, J. & Tang, J., 6 Jun 2021.

    Research output: Contribution to conferencePaperpeer-review

  33. Published

    Experimental Demonstrations of Matching Filter-free Digital Filter Multiplexed SSB OFDM IMDD Transmission Systems

    Zhong, Z., Jin, W., Dong, Y., Sankoh, A., He, J., Hong, Y., Giddings, R., Pierce, I., O'Sullivan, M., Lee, J., Mariani, G., Durrant, T. & Tang, J., Apr 2021, In: IEEE Photonics Journal. 13, 2, 12 p., 7900512.

    Research output: Contribution to journalArticlepeer-review

  34. Published

    Concurrent Inter-ONU Communications for Next Generation Mobile Fronthauls based on IMDD Hybrid SSB OFDM-DFMA PONs

    Zhong, Z., Jin, W., Jiang, S., He, J., Chang, D., Hong, Y., Giddings, R., Jin, X., O'Sullivan, M., Durrant, T., Trewern, J., Mariani, G. & Tang, J., 1 Dec 2021, In: Journal of Lightwave Technology. 39, 23, p. 7360-7369

    Research output: Contribution to journalArticlepeer-review

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