Prof. Liam P. Barry Profile

Prof. Liam P. Barry

Research Professor at Dublin City Univ

SPIE Involvement:

Author

Publications (27)

Proceedings Article | 8 March 2024 Presentation + Paper

On the application of semiconductor optical amplifier towards Terabit/s short-reach IM/DD transmission systems

Lakshmi Narayanan Venkatasubramani, Ahmed Galib Reza, Liam Barry

Proceedings Volume 12894, 128940E (2024) https://doi.org/10.1117/12.3008894

KEYWORDS: Optical transmission, Modulation, Relative intensity noise, Semiconductor optical amplifiers, Wavelength division multiplexing, Integrated optics, Data transmission, Single mode fibers, Quantum channels, Artificial neural networks

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Proceedings Article | 17 March 2023 Poster + Paper

Widely tunable C-band laser and module with fast tuning and narrow linewidth

Gaurav Jain, Stefanos Andreou, Christopher McGuinness, M. Deseada Gutierrez-Pascual, Marcos Troncoso-Costas, Lakshmi Narayanan Venkatasubramani, Liam Barry, Luc Augustin, Frank Smyth, Shane Duggan

Proceedings Volume 12424, 124241M (2023) https://doi.org/10.1117/12.2668652

KEYWORDS: Tunable lasers, Optical switching, Ring lasers, Reliability, Packet switching, Relative intensity noise, Optical coherence, LIDAR, Photonics, Design and modelling

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Proceedings Article | 15 March 2023 Presentation + Paper

Investigating probabilistic constellation shaping for dual-polarization PAM8 signals at different data rates

Kayden L. Kaller, Mihail Raytchev, Ahmed Galib Reza, Marcos Troncoso Costas, Liam Barry, Ahmad Atieh

Proceedings Volume 12429, 124291E (2023) https://doi.org/10.1117/12.2648047

KEYWORDS: Digital signal processing, Polarization, Modulation, Eye, Signal detection, Single mode fibers, Numerical simulations, Signal processing, Quadrature amplitude modulation, Data transmission

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Proceedings Article | 12 July 2019 Open Access

European network for high performance integrated microwave photonics

Chris Roeloffzen, Liam Barry

Proceedings Volume 11180, 1118058 (2019) https://doi.org/10.1117/12.2536107

KEYWORDS: Microwave photonics, Astronomical imaging, Integrated optics

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Proceedings Article | 4 March 2019 Paper

Investigation into the phase noise of wavelength-tunable semiconductor lasers for coherent systems

Yonglin Yu, Fan Liu, Jialin Zhao, Yuze Wu, Da Chen, Yi Lin, Aravind Anthur, Liam Barry

Proceedings Volume 10922, 109220E (2019) https://doi.org/10.1117/12.2507616

KEYWORDS: Semiconductor lasers, Wavelength tuning, Tunable lasers, Reflectors, Phase measurement

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Proceedings Article | 22 February 2017 Presentation + Paper

Injection-locking criteria for simultaneously locking single-mode lasers to optical frequency combs from gain-switched lasers

Seán P. Ó Duill, Prince Anandarajah, Frank Smyth, Liam Barry

Proceedings Volume 10098, 100980H (2017) https://doi.org/10.1117/12.2249769

KEYWORDS: Frequency combs, Laser optics, Optical simulations, Systems modeling, Optical communications, Stochastic processes, Telecommunications, Instrument modeling, Singular optics, Semiconductor lasers, Modulation, Pulsed laser operation, Laser stabilization

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Proceedings Article | 20 February 2017 Paper

Chip-scale frequency comb generators for high-speed communications and optical metrology

C. Koos, T. Kippenberg, L. Barry, A. Ramdane, F. Lelarge, W. Freude, P. Marin, J. Kemal, C. Weimann, S. Wolf, P. Trocha, J. Pfeifle, M. Karpov, A. Kordts, V. Brasch, R. Watts, V. Vujicic, A. Martinez, V. Panapakkam, N. Chimot

Proceedings Volume 10090, 100900G (2017) https://doi.org/10.1117/12.2256465

KEYWORDS: Microresonators, Frequency combs, RF photonics, Optical communications, Optical metrology, Solitons, Semiconductor lasers, Wavelength division multiplexing, Metrology, Photonic integrated circuits, Receivers, Photonics

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Proceedings Article | 3 March 2015 Paper

Terabit/s communications using chip-scale frequency comb sources

Christian Koos, Tobias Kippenberg, Liam Barry, Larry Dalton, Wolfgang Freude, Juerg Leuthold, Joerg Pfeifle, Claudius Weimann, Matthias Lauermann, Juned Kemal, Robert Palmer, Sebastian Koeber, Philipp Schindler, Tobias Herr, Victor Brasch, Regan Watts, Delwin Elder

Proceedings Volume 9343, 93430E (2015) https://doi.org/10.1117/12.2087572

KEYWORDS: Frequency combs, Modulation, Silicon, Wavelength division multiplexing, Data transmission, Polarization, Optical amplifiers, Modulators, Phase shift keying, Electro optics

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Proceedings Article | 8 February 2015 Paper

Monolithic optical frequency comb based on quantum dashed mode locked lasers for Tb/s data transmission

A. Martinez, C. Calò, V. Panapakkam, K. Merghem, R. Watts, V. Vujicic, C. Browning, A. Accard, F. Lelarge, L. Barry, A. Ramdane

Proceedings Volume 9370, 93702Y (2015) https://doi.org/10.1117/12.2175521

KEYWORDS: Mode locking, Semiconductor lasers, Frequency combs, Laser applications, Data transmission, Semiconductors, Quantum dots, Orthogonal frequency division multiplexing, Terahertz radiation, Telecommunications

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Proceedings Article | 2 May 2014 Paper

Performance investigation of 112 Gb/s PDM-QPSK long-haul systems employing discrete mode lasers

John O'Carroll, Vidak Vujicic, Nicolas Brochier, Laurent Bramerie, Liam Barry

Proceedings Volume 9134, 91341K (2014) https://doi.org/10.1117/12.2052131

KEYWORDS: Transmitters, Semiconductor lasers, Digital signal processing, Polarization, Wavelength division multiplexing, Multiplexing, Optical amplifiers, Modulation, Forward error correction, Temperature metrology

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Proceedings Article | 31 January 2014 Paper

Quantum dot mode locked lasers for coherent frequency comb generation

A. Martinez, C. Calò, R. Rosales, R. Watts, K. Merghem, A. Accard, F. Lelarge, L. Barry, A. Ramdane

Proceedings Volume 8993, 89930A (2014) https://doi.org/10.1117/12.2036278

KEYWORDS: Mode locking, Semiconductor lasers, Frequency combs, Quantum dots, Orthogonal frequency division multiplexing, Single mode fibers, Laser optics, Semiconductors, Fabry–Perot interferometers, Fiber lasers

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Proceedings Article | 15 May 2012 Paper

Discrete mode laser diodes for FTTH/PON applications up to 10 Gbit/s

John O'Carroll, Richard Phelan, Brian Kelly, Diarmuid Byrne, Sylwester Latkowski, Prince Anandarajah, Liam Barry

Proceedings Volume 8432, 84321Z (2012) https://doi.org/10.1117/12.922326

KEYWORDS: Modulation, Semiconductor lasers, Temperature metrology, Eye, Transmitters, Receivers, Manufacturing, Waveguides, Coating, Optical testing

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Proceedings Article | 15 May 2012 Paper

Narrow linewidth discrete mode laser diodes at 1550 nm

John O'Carroll, Richard Phelan, Brian Kelly, Diarmuid Byrne, Frank Smyth, Barry Cardiff, Prince Anandarajah, Liam Barry

Proceedings Volume 8432, 84320R (2012) https://doi.org/10.1117/12.922132

KEYWORDS: Semiconductor lasers, Modulation, Receivers, Digital signal processing, Temperature metrology, Heterodyning, Phase shift keying, Waveguides, Modulators, Signal detection

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Proceedings Article | 25 January 2012 Paper

Coherent delayed self-heterodyne measurement of laser phase noise

Tam Huynh, Lim Nguyen, Liam Barry

Proceedings Volume 8331, 833107 (2012) https://doi.org/10.1117/12.915099

KEYWORDS: Phase measurement, Phase modulation, Receivers, Phase shift keying, Modulation, Modulators, Digital signal processing, Optical communications, Telecommunications, Optical testing

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Proceedings Article | 14 December 2011 Paper

Coherent phase modulation detection for self-heterodyne phase noise measurement

Tam Huynh, Lim Nguyen, Kai Shi, Liam Barry

Proceedings Volume 8309, 830920 (2011) https://doi.org/10.1117/12.904256

KEYWORDS: Phase measurement, Phase modulation, Phase shift keying, Receivers, Modulation, Modulators, Digital signal processing, Optical simulations, Laser sources, Telecommunications

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Proceedings Article | 24 August 2011 Paper

Demonstration of slow light in semiconductor optical amplifier

Anoop Patil, Deepa Venkitesh, Karl Dexter, Prince Anandarajah, Liam Barry

Proceedings Volume 8173, 817323 (2011) https://doi.org/10.1117/12.897876

KEYWORDS: Modulation, Slow light, Semiconductor optical amplifiers, Refractive index, Four wave mixing, Picosecond phenomena, Phase shift keying, Laser beam diagnostics, Linear filtering, Nonlinear optics

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Proceedings Article | 5 June 2010 Paper

High repetition rate pulse train generation at GHz repetition rates from nonlinear breather reshaping in standard single mode fibre

R. Maher, P. Anandarajah, L. Barry, B. Wetzel, J. Dudley

Proceedings Volume 7728, 772805 (2010) https://doi.org/10.1117/12.855977

KEYWORDS: Modulation, Nonlinear optics, Ultrafast phenomena, Picosecond phenomena, Optical fibers, Wave propagation, Optical amplifiers, Analytical research, Numerical simulations, Semiconductor lasers

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Proceedings Article | 3 February 2009 Paper

Discrete mode lasers for communications applications

L. P. Barry, C. Herbert, D. Jones, A. Kaszubowska-Anandarajah, B. Kelly, J. O'Carroll, R. Phelan, P. Anandarajah, K. Shi, J. O'Gorman

Proceedings Volume 7230, 72300N (2009) https://doi.org/10.1117/12.810811

KEYWORDS: Semiconductor lasers, Waveguides, Mirrors, Laser applications, Laser resonators, Etching, Laser optics, Vertical cavity surface emitting lasers, Interfaces, Laser damage threshold

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Proceedings Article | 8 September 2006 Paper

Performance issues in SCM label switched networks due to tunable laser switching events

F. Smyth, L. Barry

Proceedings Volume 6343, 63433O (2006) https://doi.org/10.1117/12.708033

KEYWORDS: Tunable lasers, Switching, Particle filters, Optical networks, Networks, Modulation, Transmitters, Switches, Channel projecting optics, Internet

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Proceedings Article | 3 June 2005 Paper

Pre-filtering on signal fading effect for radio-over-fiber distribution systems

Ling Hu, Aleksandra Kaszubowska, Liam Barry

Proceedings Volume 5825, (2005) https://doi.org/10.1117/12.605105

KEYWORDS: Dispersion, Fiber Bragg gratings, Single sideband modulation, Radio over Fiber, Optical filters, Photodiodes, Scattering, Modulation, Receivers, Power meters

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Proceedings Article | 3 June 2005 Paper

Traffic sources for optical burst switching network simulations

Bartlomiej Klusek, John Murphy, Liam Barry

Proceedings Volume 5825, (2005) https://doi.org/10.1117/12.605049

KEYWORDS: Switching, Optical networks, Computer simulations, Analytical research, Optical simulations, Internet, Electronics engineering, Computer science, Integrated optics, Optical switching

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Proceedings Article | 3 June 2005 Paper

Characterisation of picosecond pulses propagating through a semiconductor optical amplifier using frequency resolved optical gating

Aisling Clarke, Michael Connelly, Prince Anandarajah, Liam Barry, Douglas Reid

Proceedings Volume 5825, (2005) https://doi.org/10.1117/12.605058

KEYWORDS: Picosecond phenomena, Telecommunications, Optical amplifiers, Semiconductor optical amplifiers, Fiber Bragg gratings, Wave propagation, Absorption, Wavelength division multiplexing, Optical communications, Scanning probe microscopy

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Proceedings Article | 3 June 2005 Paper

All-optical sampling based on two-photon absorption in a semiconductor microcavity for high-speed OTDM

P. Maguire, L. Barry, T. Krug, M. Lynch, A. Bradley, J. Donegan, H. Folliot

Proceedings Volume 5825, (2005) https://doi.org/10.1117/12.604835

KEYWORDS: Optical microcavities, Absorption, Channel projecting optics, Semiconductors, Photons, Wavelength division multiplexing, Multiplexing, Crystal optics, Photodetectors, Nonlinear optics

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Proceedings Article | 27 August 2003 Paper

Hybrid radio/fiber system employing SCM for the distribution of multiple RF carriers with a directly modulated laser transmitter

Aleksandra Kaszubowska, Liam Barry, Prince Anandarajah

Proceedings Volume 4876, (2003) https://doi.org/10.1117/12.463701

KEYWORDS: Modulation, Particle filters, Semiconductor lasers, Radio optics, Tunable lasers, Transmitters, Multiplexing, Signal generators, Microwave radiation, Signal detection

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Proceedings Article | 27 August 2003 Paper

Performance issues associated with WDM optical systems using self-seeded gain-switched pulse sources

Prince Anandarajah, Liam Barry, Aleksandra Kaszubowska

Proceedings Volume 4876, (2003) https://doi.org/10.1117/12.463705

KEYWORDS: Wavelength division multiplexing, Eye, Multiplexing, Telecommunications, Optical communications, Gain switching, Modulation, Picosecond phenomena, Polarization, Pulsed laser operation

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Proceedings Article | 27 August 2003 Paper

Ultrafast optics for broadband photonic communication systems

Paul Maguire, Liam Barry

Proceedings Volume 4876, (2003) https://doi.org/10.1117/12.463678

KEYWORDS: Wavelength division multiplexing, Solitons, Telecommunications, Optical fibers, Channel projecting optics, Dispersion, Optical amplifiers, Modulation, Semiconductor lasers, Networks

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Proceedings Article | 27 August 2003 Paper

Effects of laser diode nonlinearities in hybrid fiber/radio systems

Frank Smyth, Liam Barry

Proceedings Volume 4876, (2003) https://doi.org/10.1117/12.464047

KEYWORDS: Modulation, Semiconductor lasers, Signal detection, Radio optics, Telecommunications, Distortion, Hybrid fiber radio, Intermodulation, Optical amplifiers, Optical fibers

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Showing 5 of 27 publications

Proceedings Volume Editor (1)

SPIE Conference Volume | 3 June 2005

Opto-Ireland 2005: Optoelectronics, Photonic Devices, and Optical Networks

Conference Committee Involvement (1)

Optical Networks: Systems and Devices

6 April 2005 | Dublin, Ireland

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