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Optics Express, ISSN 1094-4087, 10/2015, Volume 23, Issue 21, pp. 27240 - 27249
We perform an extensive numerical analysis of Raman-Assisted Fibre Optical Parametric Amplifiers (RA-FOPA) in the context of WDM QPSK signal amplification. A... 
GAIN BANDWIDTH | MODULATION | OPTICS
Journal Article
Optics Express, ISSN 1094-4087, 05/2017, Volume 25, Issue 9, pp. 10597 - 10609
A black-box polarization insensitive fiber optical parametric amplifier (PI-FOPA) is characterized for the first time using a commercial 127 Gb/s... 
AMPLIFICATION | OPTICS
Journal Article
Optics Express, ISSN 1094-4087, 2017, Volume 25, Issue 5, pp. 4810 - 4818
We experimentally optimize a single pump fiber optical parametric amplifier in terms of gain spectral bandwidth and gain variation (GV). We find that optimal... 
Journal Article
IEEE Photonics Technology Letters, ISSN 1041-1135, 08/2017, Volume 29, Issue 16, pp. 1399 - 1402
We examine the use of a depolarized broadband probe to experimentally measure the gain spectra of amplifiers comprising parametric and Raman gain. The... 
Optical fiber amplifiers | Stimulated emission | Broadband amplifiers | Raman scattering | Gain measurement | optical parametric amplifiers | Frequency measurement | Probes | Gain | broadband amplifiers | PHYSICS, APPLIED | OPTICS | ENGINEERING, ELECTRICAL & ELECTRONIC
Journal Article
Optics Express, ISSN 1094-4087, 10/2017, Volume 25, Issue 20, pp. 24312 - 24325
We demonstrate and characterize polarization-division multiplexed (PDM) DWDM data transmission for the first time in a range of systems incorporating a... 
PUMP PHASE MODULATION | OPTICS | BANDWIDTH | PERFORMANCE
Journal Article
Optics Express, ISSN 1094-4087, 2014, Volume 22, Issue 10, pp. 11840 - 11848
Optical phase conjugation (OPC) of a polarization-multiplexed comb of 10x114Gb/s DP-QPSK signals has been demonstrated for the first time, occupying a spectral... 
FIBER | TRANSMISSION-SYSTEMS | SBS-THRESHOLD | AMPLIFIERS | OPTICS
Journal Article
Optics Express, ISSN 1094-4087, 01/2015, Volume 23, Issue 2, pp. 902 - 911
We experimentally demonstrate a Raman-Assisted Fibre Optical Parametric Amplifier (RA-FOPA) with 20dB net gain using wavelength division multiplexed signals.... 
PHASE MODULATION | IMPACT | OPTICS | DISPERSION | GAIN
Journal Article
Optics Express, ISSN 1094-4087, 2015, Volume 23, Issue 5, pp. 5888 - 5897
We propose a novel architecture for all-optical add-drop multiplexing of OFDM signals. Sub-channel extraction is achieved by means of waveform replication and... 
SCHEME | DESIGN | TRANSMISSION | OPTICS | CARRIER EXTRACTION
Journal Article
2014 The European Conference on Optical Communication (ECOC), ISSN 1550-381X, 09/2014, pp. 1 - 3
We propose a novel architecture for all-optical add-drop multiplexing of OFDM signals. Extensive numerical simulations have been carried out to benchmark the... 
Conference Proceeding
IEEE Communications Magazine, ISSN 0163-6804, 03/1999, Volume 37, Issue 3, pp. 120 - 129
Journal Article
2018 Optical Fiber Communications Conference and Exposition, OFC 2018 - Proceedings, 06/2018, pp. 1 - 3
Conference Proceeding
Optics InfoBase Conference Papers, 2018, Volume 2018
Conference Proceeding
2014 The European Conference on Optical Communication (ECOC), ISSN 1550-381X, 09/2014, pp. 1 - 3
We demonstrate the first multi-wavelength regeneration of quadrature phase shift keyed (QPSK) formatted signals, showing a simultaneous Q 2 -factor improvement... 
Optical fibers | Phase shift keying | Optical distortion | Repeaters | Optical pumping | Optical sensors | Phase distortion
Conference Proceeding
2017 Optical Fiber Communications Conference and Exhibition, OFC 2017 - Proceedings, 05/2017
Conference Proceeding
Conference on Optical Fiber Communication, Technical Digest Series, 2014
Conference Proceeding
36th European Conference and Exhibition on Optical Communication, ISSN 1550-381X, 09/2010, Volume 1-2, pp. 1 - 3
We demonstrate 40 × 43Gbit/s RZ-DQPSK transmission over 1000km of ultra-low-loss G.652 fibre with 250km amplifier spacing. Hybrid Raman-EDFA amplification with... 
Stimulated emission | Bit error rate | Optical noise | Gain | Dispersion | Optimization | Signal to noise ratio
Conference Proceeding
2018 European Conference on Optical Communication (ECOC), 09/2018, Volume 2018-, pp. 1 - 3
We demonstrate the use of high gain Raman amplification for generating a high power pump for use within a fibre optical parametric amplifier and an optical... 
Optical fiber amplifiers | Optical pumping | Stimulated emission | Optical noise | Optical amplifiers
Conference Proceeding
2009 35th European Conference on Optical Communication, ISSN 1550-381X, 09/2009, pp. 1 - 2
We report an experimental characterisation examining the impact of differing 50 Hz neighbouring modulation formats and bit rates on the performance of 43 Gb/s... 
Decision support systems | Fiber reinforced plastics | Quadratic programming
Conference Proceeding
2017 European Conference on Optical Communication (ECOC), 09/2017, Volume 2017-, pp. 1 - 3
We demonstrate a 'black-box' PI-FOPA operating with 16dB net-gain within a DWDM transmission system for the first time, amplifying a record 45×127Gb/s... 
Optical fiber amplifiers | Erbium-doped fiber amplifiers | Wavelength division multiplexing | Optical noise | Bit error rate | Signal to noise ratio
Conference Proceeding
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