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2 × 53 Gbit/s PAM-4 Transmission Using 1.3 μm DML With High Power Budget Enabled by Quantum-Dot SOA
Ahmed Galib Reza;Lakshmi Narayanan Venkatasubramani;Anil Raj Gautam;Prajwal D. Lakshmijayasimha;John O’Carroll;Richard Phelan;Diarmuid Byrne;Brian Kelly;Vladimir S. Mikhrin;Alexey Gubenko;Liam P. Barry
We investigate the performance of 1.3~\mu m directly modulated multiple-quantum-well strained AlGaInAs distributed feedback laser in an optically amplified wavelength-division multiplexed (WDM) system for next-generation passive optical networks. We experimentally demonstrate 2\times 53 Gbit/s PAM-4 transmissions over 20 km of a single-mode fiber employing two 16-GHz bandwidth-limited dire...Show More
2 × 53 Gbit/s PAM-4 Transmission Using 1.3 μm DML With High Power Budget Enabled by Quantum-Dot SOA
Ahmed Galib Reza;Lakshmi Narayanan Venkatasubramani;Anil Raj Gautam;Prajwal D. Lakshmijayasimha;John O’Carroll;Richard Phelan;Diarmuid Byrne;Brian Kelly;Vladimir S. Mikhrin;Alexey Gubenko;Liam P. Barry
Impact of Analog and Digital Pre-Emphasis on the Signal-to-Noise Ratio of Bandwidth-Limited Optical Transceivers
Zichuan Zhou;Temitope Odedeyi;Brian Kelly;John O'Carroll;Richard Phelan;Izzat Darwazeh;Zhixin Liu
The ever-growing machine-to-machine traffic in data centers has stimulated the increase of transceiver data rate from 25 Gb/s/λ to 100 Gb/s/λ and beyond. It is believed that advanced modulation formats and digital-to-analog converters (DACs) will be employed in next generation short-reach transceivers. Digital pre-emphasis techniques are widely employed in DAC-based transceivers to compensate for ...Show More
Detector-Free Bidirectional Symmetric Communication Scheme Based on Compound States of two Mutually Coupled Diode Lasers
2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
Year: 2019 | Conference Paper |
Summary form only given. In recent years a dramatic expansion of internet data traffic has been reported[1]. To provide high data rates in two directions via optical fibers, several methods have been developed. Most of them require both at each end a light source to generate the data and a detector to receive the data[2]. Coupled semiconductor lasers - a system of two spatially separated nonlinear...Show More
Detector-Free Bidirectional Symmetric Communication Scheme Based on Compound States of two Mutually Coupled Diode Lasers
Year: 2019 | Conference Paper |
Optical Injection-Locked Directly Modulated Lasers for Dispersion Pre-Compensated Direct-Detection Transmission
Zhixin Liu;Graham Hesketh;Brian Kelly;John O'Carroll;Richard Phelan;David J. Richardson;Radan Slavík
Journal of Lightwave Technology
Cited by: Papers (9)
The growing traffic demand in interdata center and metro communications requires high-speed and low-cost transceivers that can flexibly adapt to different transmission distances of up to a few hundred km. Ultimately low-cost transceivers will use the simplest optical hardware, namely a directly modulated transmitter and direct detection receiver. Using optical injection-locked directly modulated l...Show More
Frequency Drift Reduction in a Four-Laser Array for TWDM PON Applications
Mathilde Gay;Laurent Bramerie;Christophe Peucheret;John O’Carroll;Richard Phelan;Michael Gleeson;Diarmuid Byrne;Brian Kelly;Marta Nawrocka;Fabienne Saliou
IEEE Photonics Technology Letters
Cited by: Papers (1)
Burst-mode operation of laser arrays suitable for next-generation passive optical networks (PON2) employing time and wavelength division multiplexing (TWDM) is impaired by frequency drifts under variable burst duration. In this work, the issue of frequency drifts under burst and wavelength switching operation is addressed in a four-laser array integrated with a multimode interference coupler using...Show More
On-chip integrated zero-RAM frequency modulator for noise reduction and linewidth narrowing in discrete-mode lasers
Stefan Kundermann;John O'Carroll;Diarmuid Byrne;Lina Maigyte;Brian Kelly;Ivar Kjelberg;Steve Lecomte;Richard Phelan;Dmitri L. Boiko
2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
Year: 2017 | Conference Paper |
Wavelength tuneable lasers for 40G and 100G coherent optical communications systems need to meet stringent requirements on narrow linewidth emission across the entire tuning range, with typical values of 300-500 kHz required in commercial systems. Higher capacities can be achieved in next generation systems by employing higher order modulation formats such as 16QAM or 64QAM. However, such systems ...Show More
Discrete mode laser diodes emitting single wavelength mode at λ∼657 and 689 nm for optical atomic clock applications
Richard Phelan;Michael Gleeson;John O'Carroll;Diarmuid Byrne;Lina Maigyte;Philip Long;Robert Lennox;Kevin Carney;Brian Kelly;Jim Somers
2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)
Year: 2017 | Conference Paper |
Cited by: Papers (1)
This paper presents results on discrete mode diode lasers emitting single mode at the Strontium second stage cooling transition wavelength of λ =689 nm and the Calcium clock transition of λ =657.4 nm. Discrete Mode diode lasers are simple in structure comprising a regrowth-free ridge waveguide Fabry-Pérot laser. Single wavelength operation is achieved by introducing index perturbations in the form...Show More
Discrete Multitone Format for Repeater-Less Direct-Modulation Direct-Detection Over 150 km
Zhixin Liu;Brian Kelly;John O'Carroll;Richard Phelan;David J. Richardson;Radan Slavík
Journal of Lightwave Technology
Cited by: Papers (7)
High-capacity and low-cost repeater-less transmission beyond 50 km is of interest for the next-generation inter-data center communications. Transmission over such relatively long distance generally requires transmission in the 1550-nm low-loss telecom band that is, however, impaired by chromatic dispersion. Here, we study the performance of the direct modulation direct detection system using the d...Show More
40 Gbps WDM transmission over 1.15 km HC-PBGF using the first InP-based Mach Zehnder modulator at 2 μm
M. U. Sadiq;H. Zhang;M. Gleeson;N. Ye;B. Roycroft;N. Kavanagh;C. Robert;H. Yang;K. Thomas;A. Gocalinska;Z. Li;Y. Chen;N. V. Wheeler;J. R. Hayes;S. U. Alam;F. Poletti;M. N. Petrovich;D. J. Richardson;B. Kelly;J. O'Carroll;R. Phelan;E. Pelucchi;P. O'Brien;F. Peters;F. Gunning;B. Corbett
2015 European Conference on Optical Communication (ECOC)
Year: 2015 | Conference Paper |
40 Gbps WDM transmission over 1.15 km HC-PBGF using the first InP-based Mach Zehnder modulator at 2 μm
M. U. Sadiq;H. Zhang;M. Gleeson;N. Ye;B. Roycroft;N. Kavanagh;C. Robert;H. Yang;K. Thomas;A. Gocalinska;Z. Li;Y. Chen;N. V. Wheeler;J. R. Hayes;S. U. Alam;F. Poletti;M. N. Petrovich;D. J. Richardson;B. Kelly;J. O'Carroll;R. Phelan;E. Pelucchi;P. O'Brien;F. Peters;F. Gunning;B. Corbett
Year: 2015 | Conference Paper |
52.6 Gbit/s single-channel directly-modulated optical transmitter for 2-µm spectral region
Z. Liu;Z. Li;Y. Chen;B. Kelly;R. Phelan;J. O'Carroll;J. P. Wooler;N. V. Wheeler;A. M. Heidt;T. Richter;C. Schubert;M. Becker;F. Poletti;M. N. Petrovich;S. Alam;D. J. Richardson;R. Slavík
2015 Optical Fiber Communications Conference and Exhibition (OFC)
Year: 2015 | Conference Paper |
Optical injection locking is used to increase the modulation bandwidth and suppress chirp in a single-channel, single-polarization discrete multi-tone bit-loading-optimized transmitter. Transmission through a hollow-core photonic bandgap fiber with negligible signal degradation and distortion is demonstrated.Show More
52.6 Gbit/s single-channel directly-modulated optical transmitter for 2-µm spectral region
Z. Liu;Z. Li;Y. Chen;B. Kelly;R. Phelan;J. O'Carroll;J. P. Wooler;N. V. Wheeler;A. M. Heidt;T. Richter;C. Schubert;M. Becker;F. Poletti;M. N. Petrovich;S. Alam;D. J. Richardson;R. Slavík
Year: 2015 | Conference Paper |
High-Capacity Directly Modulated Optical Transmitter for 2-μm Spectral Region
Zhixin Liu;Yong Chen;Zhihong Li;Brian Kelly;Richard Phelan;John O’Carroll;Tom Bradley;John P. Wooler;Natalie V. Wheeler;Alexander M. Heidt;Thomas Richter;Colja Schubert;Martin Becker;Francesco Poletti;Marco N. Petrovich;Shaif-ul Alam;David J. Richardson;Radan Slavík
Journal of Lightwave Technology
Cited by: Papers (75)
The 2-μm wave band is emerging as a potential new window for optical telecommunications with several distinct advantages over the traditional 1.55 μm region. First of all, the hollow-core photonic band gap fiber (HC-PBGF) is an emerging transmission fiber candidate with ultra-low nonlinearity and lowest latency (0.3% slower than light propagating in vacuum) that has its minimum loss within the 2-μ...Show More
High-Capacity Directly Modulated Optical Transmitter for 2-μm Spectral Region
Zhixin Liu;Yong Chen;Zhihong Li;Brian Kelly;Richard Phelan;John O’Carroll;Tom Bradley;John P. Wooler;Natalie V. Wheeler;Alexander M. Heidt;Thomas Richter;Colja Schubert;Martin Becker;Francesco Poletti;Marco N. Petrovich;Shaif-ul Alam;David J. Richardson;Radan Slavík
InP-Based Active and Passive Components for Communication Systems at 2 μm
N. Ye;M. R. Gleeson;M. U. Sadiq;B. Roycroft;C. Robert;H. Yang;H. Zhang;P. E. Morrissey;N. Mac Suibhne;K. Thomas;A. Gocalinska;E. Pelucchi;R. Phelan;B. Kelly;J. O’Carroll;F. H. Peters;F. C. Garcia Gunning;B. Corbett
Progress on advanced active and passive photonic components that are required for high-speed optical communications over hollow-core photonic bandgap fiber at wavelengths around 2 μm is described in this paper. Single-frequency lasers capable of operating at 10 Gb/s and covering a wide spectral range are realized. A comparison is made between waveguide and surface normal photodiodes with the latte...Show More
High energy diode-seeded nanosecond 2 µm fiber MOPA systems incorporating active pulse shaping
Z. Li;A. M. Heidt;P. S. Teh;M. Berendt;J. K. Sahu;R. Phelan;B. Kelly;S. U. Alam;D. J. Richardson
2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications
Year: 2014 | Conference Paper |
81 Gb/s WDM transmission at 2μm over 1.15 km of low-loss hollow core photonic bandgap fiber
H. Zhang;Z. Li;N. Kavanagh;J. Zhao;N. Ye;Y. Chen;N. V. Wheeler;J. P. Wooler;J. R. Hayes;S. R. Sandoghchi;F. Poletti;M. N. Petrovich;S. U. Alam;R. Phelan;J. O'Carroll;B. Kelly;D. J. Richardson;B. Corbett;F. C. Garcia Gunning
2014 The European Conference on Optical Communication (ECOC)
Year: 2014 | Conference Paper |
Cited by: Papers (12)
81 Gb/s WDM transmission at 2μm over 1.15 km of low-loss hollow core photonic bandgap fiber
H. Zhang;Z. Li;N. Kavanagh;J. Zhao;N. Ye;Y. Chen;N. V. Wheeler;J. P. Wooler;J. R. Hayes;S. R. Sandoghchi;F. Poletti;M. N. Petrovich;S. U. Alam;R. Phelan;J. O'Carroll;B. Kelly;D. J. Richardson;B. Corbett;F. C. Garcia Gunning
Year: 2014 | Conference Paper |
Up to 64QAM (30 Gbit/s) directly-modulated and directly-detected OFDM at 2 μm wavelength
Z. Liu;Z. Li;Y. Chen;J. P. Wooler;B. Kelly;R. Phelan;J. O'Carroll;N. V. Wheeler;A. M. Heidt;F. Poletti;M. N. Petrovich;S. Alam;D. J. Richardson;R. Slavík
2014 The European Conference on Optical Communication (ECOC)
Year: 2014 | Conference Paper |
Cited by: Papers (1)
Tunable QAM transmitter based on direct modulation laser
J. Kakande;R. Slavík;R. Phelan;J. O'Carroll;B. Kelly;D. J. Richardson
Year: 2014 | Conference Paper |
35 kW peak power picosecond pulsed thulium-doped fibre amplifier system seeded by a gain-switched laser diode at 2 μm
A. M. Heidt;Z. Li;J. Sahu;P. C. Shardlow;M. Becker;M. Rothhardt;M. Ibsen;R. Phelan;B. Kelly;S. U. Alam;D. J. Richardson
2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC
Year: 2013 | Conference Paper |
Cited by: Papers (1)
High power fibre laser sources in the 2 μm wavelength region with picosecond-scale pulse durations have attractive applications such as materials processing, eye-safe radar and nonlinear frequency conversion to mid-infrared wavelengths. Current implementations are typically based on the amplification of picosecond pulses obtained from a mode-locked oscillator, and pulse energies of several hundred...Show More
Transmission over 50 km using a directly modulated integrated two-section discrete mode laser at 1550 nm
J. O'Carroll;P. M. Anandarajah;R. Zhou;R. Phelan;B. Kelly;J. O'Gorman;L. P. Barry
2013 Conference on Lasers & Electro-Optics Europe & International Quantum Electronics Conference CLEO EUROPE/IQEC
Year: 2013 | Conference Paper |
Cited by: Papers (5)
Directly modulated lasers provide simple, and cost efficient, optical transmitters for use in optical networks. However, chirp limits the bit rate distance product achievable in such systems, with transmission distances limited to around 10 km when operating at 10 Gbit/s in the 1550 nm window [1, 2], and thereby limiting their suitability as optical transmitters in next generation access networks ...Show More
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