Asymmetric dual-loop feedback to suppress spurious tones and reduce timing jitter in self-mode-locked quantum-dash lasers emitting at 1.55 μm

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dc.contributor.authorAsghar, Haroon
dc.contributor.authorMcInerney, John G.
dc.contributor.funderAir Force Office of Scientific Research
dc.contributor.funderScience Foundation Ireland
dc.date.accessioned2018-07-30T10:30:33Z
dc.date.available2018-07-30T10:30:33Z
dc.date.issued2017
dc.description.abstractWe demonstrate an asymmetric dual-loop feedback method to suppress external cavity side-modes induced in self-mode-locked quantum-dash lasers with conventional single-and dual-loop feedback. In this Letter, we report optimal suppression of spurious tones by optimizing the delay in the second loop. We observed that asymmetric dual-loop feedback, with large (similar to 8x) disparity in loop lengths, gives significant suppression in external-cavity side-modes and produces flat radio frequency (RF) spectra close to the main peak with a low timing jitter, compared to single-loop feedback. Significant reduction in RF linewidth and timing jitter was produced by optimizing the delay time in the second feedback loop. Experimental results based on this feedback configuration validate predictions of recently published numerical simulations. This asymmetric dual-loop feedback scheme provides simple, efficient, and cost-effective stabilization of optoelectronic oscillators based on mode-locked lasers. (C) 2017 Optical Society of Americaen
dc.description.sponsorshipAir Force Office of Scientific Research (European Office of Aerospace Research and Development (FA9550-14-1-0204)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationAsghar, H. and McInerney, J. G. (2017) 'Asymmetric dual-loop feedback to suppress spurious tones and reduce timing jitter in self-mode-locked quantum-dash lasers emitting at 1.55???m', Optics Letters, 42(18), pp. 3714-3717. doi: 10.1364/OL.42.003714en
dc.identifier.doi10.1364/OL.42.003714
dc.identifier.endpage3717
dc.identifier.issn0146-9592
dc.identifier.issued18
dc.identifier.journaltitleOptics Lettersen
dc.identifier.startpage3714
dc.identifier.urihttps://hdl.handle.net/10468/6528
dc.identifier.volume42
dc.language.isoenen
dc.publisherOptical Society of Americaen
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Investigator Programme/12/IP/1658/IE/Pulsed semiconductor lasers for metrology and remote sensing: synchronisation and stabilisation dynamics/
dc.relation.urihttps://www.osapublishing.org/ol/abstract.cfm?uri=ol-42-18-3714
dc.rights© 2017, Optical Society of America under the terms of the OSA Open Access Publishing Agreement.en
dc.subjectOptical feedbacken
dc.subjectSemiconductor-laseren
dc.subjectStabilizationen
dc.subjectInjectionen
dc.subjectComben
dc.titleAsymmetric dual-loop feedback to suppress spurious tones and reduce timing jitter in self-mode-locked quantum-dash lasers emitting at 1.55 μmen
dc.typeArticle (peer-reviewed)en
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