Search Results - "Ó Dúill, Seán P."

Simplified Laser Frequency Noise Measurement Using the Delayed Self-Heterodyne Method by Dúill, Seán P. Ó, Barry, Liam P.

“…Here, we report on a simplified laser frequency noise measurement technique employing an acousto-optic modulator, a delay line, and a real-time oscilloscope…”
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Detailed investigation of the pump phase noise tolerance for wavelength conversion of 16-QAM signals using FWM by Naimi, Sepideh T., Duill, Sean P. O., Barry, Liam P.

“…All-optical wavelength conversion (WC) of advanced modulation formats could have a significant role in the next generation of high-capacity optical networks…”
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Enhanced Optical Comb Generation by Gain-Switching a Single-Mode Semiconductor Laser Close to Its Relaxation Oscillation Frequency by Anandarajah, Prince M., Duill, Sean P. O., Rui Zhou, Barry, Liam P.

“…We demonstrate, through experimental results and supporting numerical simulations, the optimum conditions to generate an optical comb via gain-switching of a…”
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Numerical investigation into the injection-locking phenomena of gain switched lasers for optical frequency comb generation by Ó Dúill, Sean P., Anandarajah, Prince M., Zhou, Rui, Barry, Liam P.

“…We present detailed numerical simulations of the laser dynamics that describe optical frequency comb formation by injection-locking a gain-switched laser. The…”
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Fast Reconfigurable SOA-Based Wavelength Conversion of Advanced Modulation Format Data by Lin, Yi, P. Anthur, Aravind, P. Ó Dúill, Sean, Liu, Fan, Yu, Yonglin, P. Barry, Liam

“…We theoretically analyze the phase noise transfer issue between the pump and the wavelength-converted idler for a nondegenerate four-wave mixing (FWM) scheme,…”
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Estimation of the Performance Improvement of Pre-Amplified PAM4 Systems When Using Multi-Section Semiconductor Optical Amplifiers by Ó Dúill, Seán, Landais, Pascal, Barry, Liam

“…Multi-section semiconductor optical amplifiers (SOA) have been shown to have superior noise and linearity performance compared with single section SOAs. We…”
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Impact of laser resonance phase noise on the wavelength conversion of DQPSK signals by Duill, Sean P. O., Anthur, Aravind P., Huynh, Tam N., Venkitesh, Deepa, Barry, Liam P.

“…We show through simulations and with supporting experimental results that the performance of four-wave mixing based wavelength conversion of DQPSK signals is…”
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Phase noise tolerant wavelength conversion of Tb/s Nyquist-WDM superchannels based on 64-QAM and using FWM in SOAs by Naimi, Sepideh T., Duill, Sean P. O., Barry, Liam P.

“…We present results of all-optical wavelength conversion of a 1.008 Tb/s 6×28 Gbaud Nyquist-WDM superchannel based on 64-QAM using four-wave mixing in in a…”
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Reflective-SOA Fiber Cavity Laser as Directly Modulated WDM-PON Colorless Transmitter by Gebrewold, Simon A., Marazzi, Lucia, Parolari, Paola, Brenot, Romain, Dúill, Seán P. Ó, Bonjour, Romain, Hillerkuss, David, Hafner, Christian, Leuthold, Juerg

“…Reflective semiconductor optical amplifier (RSOA) fiber cavity lasers are attractive colorless, self-seeded, self-tuning, and directly modulatable sources for…”
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Improved Reduced Models for Single-Pass and Reflective Semiconductor Optical Amplifiers by Dúill, Seán P. Ó, Barry, Liam P

“…We present highly accurate and easy to implement, improved lumped semiconductor optical amplifier (SOA) models for both single-pass and reflective…”
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Impact of Random Group Delay Ripple on the Cascadability of Wavelength Select Switches for Nyquist-Pulse-Shaped Signals by Duill, Sean P. O., Barry, Liam P.

“…We report on the impact that the random group delay ripple of wavelength select switches has on Nyquist-pulse-shaped signals and on the cascadability of…”
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All Optical Wavelength Conversion of Nyquist-WDM Superchannels Using FWM in SOAs by Naimi, Sepideh T., O'Duill, Sean P., Barry, Liam P.

“…In this paper, the performance of all-optical wavelength conversion (WC) of Nyquist-WDM superchannels is investigated for future implementation in optical…”
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Analytical Approach to Assess the Impact of Pulse-to-Pulse Phase Coherence of Optical Frequency Combs by O'Duill, Sean P., Rui Zhou, Anandarajah, Prince M., Barry, Liam P.

“…We derive analytical expressions to show that the pulse-to-pulse phase coherence is critical to generate an optical frequency comb with clearly defined comb…”
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Development of small form factor packaged single-mode semiconductor laser for spectroscopic applications at 689 nm by Ó Dúill, Seán P., Phelan, Richard, Gleeson, Michael, Byrne, Diarmuid, O'Carroll, John, Boylan, Neal, Nawrocka, Marta, Lambkin, Emma, Carney, Kevin, Maigyte, Lina, Lennox, Rob, Somers, Jim, Kelly, Brian, Bartlow, Matthew J., Foote, David B., Heiniger, Adam T., Haimberger, Chris, von Sivers, Moritz, Bachmann, Alexander, Löffler, Florian, Pavlov, N., Jost, John D., Barry, Liam P.

“…•This paper reports on a functional packaged single-mode and stable semiconductor laser operating at 689 nm for spectroscopic applications.•The key point is…”
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Comment on: "Impact of Nonlinear Phase Noise on All-Optical Wavelength Conversion of 10.7 GBaud QPSK Data Using Dual Correlated Pumps" by Anthur, Aravind P., Watts, Regan T., O'Duill, Sean P., Zhou, Rui, Venkitesh, Deepa, Barry, Liam P.

“…We recently presented results pertaining to the impact of nonlinear phase noise on the wavelength conversion of quadrature phase shift signals using four-wave…”
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Simulations of an OSNR-Limited All-Optical Wavelength Conversion Scheme by Duill, Sean P. O., Naimi, Sepideh T., Anthur, Aravind P., Huynh, Tam N., Venkitesh, Deepa, Barry, Liam P.

“…We present simulations of a scheme to perform wavelength conversion of signals that eliminates phase-noise transfer from the pump to the converted signal…”
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Performance of an Injection-Locked Active Demultiplexer for FSR-Tunable Optical Frequency Combs by Lakshmijayasimha, Prajwal Doddaballapura, Martin, Eamonn P., O Duill, Sean P., Landais, Pascal, Anandarajah, Prince M., Kaszubowska-Anandarajah, Aleksandra

“…An active injection-locked demultiplexer for optical combs with flexible channel spacing is demonstrated. Relationships between the injected power and…”
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Numerical investigation into the injection-locking phenomena of gain switched lasers for optical frequency comb generation by Duill, Sean P. O, Anandarajah, Prince M, Zhou, Rui, Barry, Liam P

“…Appl. Phys. Lett. 106, 211105 (2015) We present detailed numerical simulations of the laser dynamics that describe optical frequency comb formation by…”
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Pump linewidth requirements for processing dispersion-altered DQPSK signals using FWM by Dúill, Seán P.Ó., Naimi, Sepideh T., Barry, Liam P.

“…We report on a potentially deleterious issue regarding the four-wave mixing (FWM)-based processing of dispersion-altered signals. We estimate the…”
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Phase noise tolerant wavelength conversion of Nyquist-WDM superchannels using FWM in SOAs by Duill, Sean P. O., Naimi, Sepideh T., Barry, Liam P.

“…Nyquist-WDM superchannel technology, which involves the combination of several lower data rate optical wavelength carriers (sub-channels), is a suitable…”
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