Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Sean P. O Duill"'
Autor:
Seán P. Ó Dúill, Liam P. Barry
Publikováno v:
Photonics, Vol 11, Iss 9, p 813 (2024)
Here, we report on a simplified laser frequency noise measurement technique employing an acousto-optic modulator, a delay line, and a real-time oscilloscope. The technique is a slight modification of the typical delayed heterodyne method. Instead of
Externí odkaz:
https://doaj.org/article/ba032d69dbb54ee19d1b3694076a310e
Publikováno v:
Applied Sciences, Vol 7, Iss 10, p 1033 (2017)
We theoretically analyze the phase noise transfer issue between the pump and the wavelength-converted idler for a nondegenerate four-wave mixing (FWM) scheme, as well as study the vector theory in nonlinear semiconductor optical amplifiers (SOAs), in
Externí odkaz:
https://doaj.org/article/a56b7fd81443421296325ef4da94941b
Publikováno v:
Applied Sciences, Vol 7, Iss 9, p 908 (2017)
Multi-section semiconductor optical amplifiers (SOA) have been shown to have superior noise and linearity performance compared with single section SOAs. We show how to create a simplified numerical model for multi-section SOAs that is suitable for op
Externí odkaz:
https://doaj.org/article/cf63f225979a41d6b67498ae51d3df81
Autor:
Sean P. O Duill, A. Ramdane, Quentin Gaimard, V. Panapakkam, Yi Lin, Liam P. Barry, Aravind P. Anthur
Publikováno v:
IEEE Photonics Technology Letters. 30:947-950
We demonstrate an all-optical wavelength conversion system based on four-wave mixing in semiconductor optical amplifiers for quadrature phase shift keying (QPSK) and 16-quadrature amplitude modulation (16-QAM) signals using tunable dual-correlated pu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4de351a8e11f618ce73cf6d9c941a5d
https://doi.org/10.1109/lpt.2018.2818410
https://doi.org/10.1109/lpt.2018.2818410
Autor:
Sean P. O Duill, Liam P. Barry
Publikováno v:
Journal of Lightwave Technology. 34:4162-4168
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 wavelength select switches (WSSs) for use as wavelength-based routers within optical communicatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d71cef93d1db0b5aa51679e617c2764d
https://doi.org/10.1109/jlt.2016.2593338
https://doi.org/10.1109/jlt.2016.2593338
Autor:
Julien Poette, Beatrice Cabon, Arman Farhang, Liam P. Barry, Colm Browning, Sean P. O Duill, Paul Sheridan, Eamonn P. Martin, Hamza Hallak Elwan
Publikováno v:
Journal of Lightwave Technology
Journal of Lightwave Technology, Institute of Electrical and Electronics Engineers (IEEE)/Optical Society of America(OSA), 2018, 36 (19), pp.4602-4610
Journal of Lightwave Technology, Institute of Electrical and Electronics Engineers (IEEE)/Optical Society of America(OSA), 2018, 36 (19), pp.4602-4610
The millimeter-wave (mm-wave) frequency band has emerged as a means to overcome current radio frequency spectral limitations and represents an interesting solution to fulfill the bandwidth and networking requirements of fifth generation (5G) mobile c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fff0f3e04a5e503cba478cf57fa8bfe7
https://hal.archives-ouvertes.fr/hal-01954293
https://hal.archives-ouvertes.fr/hal-01954293
Publikováno v:
IEEE Journal of Quantum Electronics. 51:1-8
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 lines. Our results are verified by supporting numerical simulations. We build upon previous w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a80723500c1129f739e468023bd4ef9
https://doi.org/10.1109/jqe.2015.2485228
https://doi.org/10.1109/jqe.2015.2485228
Publikováno v:
IEEE Journal of Selected Topics in Quantum Electronics. 21:592-600
We demonstrate, through experimental results and supporting numerical simulations, the optimum conditions to generate an optical comb via gain-switching of a single-mode DFB semiconductor laser. The DFB laser is biased appropriately and gain-switched
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c4fe39b388042785e8a3b21f9dc4fdef
https://doi.org/10.1109/jstqe.2015.2456751
https://doi.org/10.1109/jstqe.2015.2456751
Publikováno v:
Journal of Lightwave Technology. 33:3959-3967
In this paper, the performance of all-optical wavelength conversion (WC) of Nyquist-WDM superchannels is investigated for future implementation in optical networks. We consider advanced modulation formats of DQPSK and 16-QAM for the subchannel modula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::35a1461a698ff4b19fed50750211d865
https://doi.org/10.1109/jlt.2015.2461021
https://doi.org/10.1109/jlt.2015.2461021
Autor:
Mohamed Omar Sahni, Pascal Besnard, Michel Joindot, Laurent Bramerie, Stuart G. Murdoch, Liam P. Barry, Stephane Trebaol, Sean P. O Duill
Publikováno v:
Optics Letters
Optics Letters, Optical Society of America-OSA Publishing, 2017, 42 (19), pp.4000-4003. ⟨10.1364/ol.42.004000⟩
Optics Letters, 2017, 42 (19), pp.4000-4003. ⟨10.1364/ol.42.004000⟩
Optics Letters, Optical Society of America-OSA Publishing, 2017, 42 (19), pp.4000-4003. ⟨10.1364/ol.42.004000⟩
Optics Letters, 2017, 42 (19), pp.4000-4003. ⟨10.1364/ol.42.004000⟩
International audience; We report on the frequency noise reduction performance of a feed-forward technique. The Letter is based on frequency noise measurements that allow the spectral response of the feed-forward phase noise correction to be determin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4d908e2397a1662c409019b85c8adbe
https://hal.archives-ouvertes.fr/hal-01959533
https://hal.archives-ouvertes.fr/hal-01959533