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Ian Francis Lealman
Researcher at Suffolk University
Publications - 83
Citations - 1308
Ian Francis Lealman is an academic researcher from Suffolk University. The author has contributed to research in topics: Laser & Optical amplifier. The author has an hindex of 19, co-authored 82 publications receiving 1285 citations. Previous affiliations of Ian Francis Lealman include Huawei & Phoenix House.
Papers
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Journal ArticleDOI
Spectral slicing WDM-PON using wavelength-seeded reflective SOAs
Peter Healey,Paul D. Townsend,C. Ford,L. Johnston,P. Townley,Ian Francis Lealman,L.J. Rivers,S.D. Perrin,R. Moore +8 more
TL;DR: In this paper, a method of implementing wavelength division multiplexed-passive optical network (WDM-PON) upstream channels based on spectral slicing with wavelength-seeded travelling-wave reflective semiconductor optical amplifier (SOA) modulators is described.
Proceedings ArticleDOI
Long Reach Passive Optical Networks
Paul D. Townsend,Giuseppe Talli,Chi-Wai Chow,E.M. MacHale,Cleitus Antony,R. Davey,T. De Ridder,Xing-Zhi Qiu,Peter Ossieur,H.G. Krimmel,David Smith,Ian Francis Lealman,Alistair James Poustie,Sebastian Randel,Harald Rohde +14 more
TL;DR: This paper is a tutorial reviewing research and development performed over the last few years to extend the reach of passive optical networks using technology such as optical amplifiers.
Journal ArticleDOI
Hybrid Integrated Optical Phase-Lock Loops for Photonic Terahertz Sources
Robert Steed,Lalitha Ponnampalam,Martyn J. Fice,Cyril C. Renaud,D. C. Rogers,David G. Moodie,Graeme Maxwell,Ian Francis Lealman,Michael J. Robertson,L. Pavlovic,Luka Naglic,Matjaz Vidmar,Alwyn J. Seeds +12 more
TL;DR: In this paper, the first hybrid-integrated optical phase-lock loop (OPLL) for high spectral purity photonic terahertz sources was presented, which achieved the necessary short loop delay to lock a 1-MHz linewidth slave laser by hybrid integration of the slave laser and photodetector.
Journal ArticleDOI
InGaAsP/InP tapered active layer multiquantum well laser with 1.8 dB coupling loss to cleaved singlemode fibre
TL;DR: In this article, a tapered active layer MQW BH laser with spot sizes closely matched to cleaved fiber is presented, achieving a record low coupling loss of 1.8 dB to 101 mu m core cleaved singlemode fiber.
Journal ArticleDOI
Demonstration of a 32 $\,\times\,$ 512 Split, 100 km Reach, 2 $\,\times\,$ 32 $\,\times\,$ 10 Gb/s Hybrid DWDM-TDMA PON Using Tunable External Cavity Lasers in the ONUs
Peter Ossieur,Cleitus Antony,Alan Naughton,A. M. Clarke,H.-G Krimmel,Xin Yin,Xing-Zhi Qiu,C. Ford,A. Borghesani,D.G. Moodie,Alistair James Poustie,R. Wyatt,B. Harmon,Ian Francis Lealman,G. Maxwell,D. Rogers,David Smith,Sylvia Smolorz,Harald Rohde,Derek Nesset,R. Davey,P. D. Townsend +21 more
TL;DR: In this paper, a hybrid DWDM-TDM optical access network that provides a route for integrating access and metro net-works into a single all-optical system is presented.