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Article: Modulation instabilities in two-core optical fibers

TitleModulation instabilities in two-core optical fibers
Authors
KeywordsAbrupt change
Anomalous dispersion
Input power
Modulation instabilities
Optical fiber coupling
Issue Date2011
PublisherOptical Society of America. The Journal's web site is located at http://josab.osa.org/journal/josab/about.cfm
Citation
Journal Of The Optical Society Of America B: Optical Physics, 2011, v. 28 n. 7, p. 1693-1701 How to Cite?
AbstractModulation instability (MI) of cw states of a two-core fiber, incorporating the effects of coupling-coefficient dispersion (CCD), is studied by solving a pair of generalized, linearly coupled nonlinear Schrödinger equations. CCD refers to the property that the coupling coefficient depends on the optical wavelength, and earlier studies of MI do not account for this physics. CCD does not seriously affect the symmetric/antisymmetric cw, but can drastically modify the MI of the asymmetric state. Generally, new MI frequency bands are produced, and CCD reduces (enhances) the original MI band in the anomalous (normal) dispersion regime. Another remarkable result is the existence of a critical value for the CCD, where the MI gain spectrum undergoes an abrupt change. In the anomalous dispersion regime, a new low-frequency MI band is generated. In the normal dispersion regime, an MI band vanishes, reappears, and then moves up in frequency on crossing this critical value. In both dispersion regimes, the relative magnitude of the low-frequency band and the high-frequency band depends strongly on the total input power.It is possibleto switch the dominantMI frequency between a low frequency and a high frequency by tuning the total input power, providing a promising scheme to manipulate MI-related nonlinear effects in two-core fibers. The MI bands are independent of the third-order dispersion, but can be shifted significantly by self-steepening at a sufficiently high total input power. The evolution of MI from a cw input is also demonstrated with a wave propagation study. © 2011 Optical Society of America.
Persistent Identifierhttp://hdl.handle.net/10722/137329
ISSN
2015 Impact Factor: 1.731
2015 SCImago Journal Rankings: 1.139
References

 

DC FieldValueLanguage
dc.contributor.authorLi, JHen_HK
dc.contributor.authorChiang, KSen_HK
dc.contributor.authorChow, KWen_HK
dc.date.accessioned2011-08-26T14:23:26Z-
dc.date.available2011-08-26T14:23:26Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal Of The Optical Society Of America B: Optical Physics, 2011, v. 28 n. 7, p. 1693-1701en_HK
dc.identifier.issn0740-3224en_HK
dc.identifier.urihttp://hdl.handle.net/10722/137329-
dc.description.abstractModulation instability (MI) of cw states of a two-core fiber, incorporating the effects of coupling-coefficient dispersion (CCD), is studied by solving a pair of generalized, linearly coupled nonlinear Schrödinger equations. CCD refers to the property that the coupling coefficient depends on the optical wavelength, and earlier studies of MI do not account for this physics. CCD does not seriously affect the symmetric/antisymmetric cw, but can drastically modify the MI of the asymmetric state. Generally, new MI frequency bands are produced, and CCD reduces (enhances) the original MI band in the anomalous (normal) dispersion regime. Another remarkable result is the existence of a critical value for the CCD, where the MI gain spectrum undergoes an abrupt change. In the anomalous dispersion regime, a new low-frequency MI band is generated. In the normal dispersion regime, an MI band vanishes, reappears, and then moves up in frequency on crossing this critical value. In both dispersion regimes, the relative magnitude of the low-frequency band and the high-frequency band depends strongly on the total input power.It is possibleto switch the dominantMI frequency between a low frequency and a high frequency by tuning the total input power, providing a promising scheme to manipulate MI-related nonlinear effects in two-core fibers. The MI bands are independent of the third-order dispersion, but can be shifted significantly by self-steepening at a sufficiently high total input power. The evolution of MI from a cw input is also demonstrated with a wave propagation study. © 2011 Optical Society of America.en_HK
dc.languageengen_US
dc.publisherOptical Society of America. The Journal's web site is located at http://josab.osa.org/journal/josab/about.cfmen_HK
dc.relation.ispartofJournal of the Optical Society of America B: Optical Physicsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsJournal of the Optical Society of America. B: Optical Physics. Copyright © Optical Society of America.-
dc.rightsThis paper was published in Journal of the Optical Society of America. B: Optical Physics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=josab-28-7-1693. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.-
dc.subjectAbrupt change-
dc.subjectAnomalous dispersion-
dc.subjectInput power-
dc.subjectModulation instabilities-
dc.subjectOptical fiber coupling-
dc.titleModulation instabilities in two-core optical fibersen_HK
dc.typeArticleen_HK
dc.identifier.emailChow, KW:kwchow@hku.hken_HK
dc.identifier.authorityChow, KW=rp00112en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1364/JOSAB.28.001693en_HK
dc.identifier.scopuseid_2-s2.0-79959998498en_HK
dc.identifier.hkuros189595en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79959998498&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume28en_HK
dc.identifier.issue7en_HK
dc.identifier.spage1693en_HK
dc.identifier.epage1701en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLi, JH=43761330400en_HK
dc.identifier.scopusauthoridChiang, KS=35193538600en_HK
dc.identifier.scopusauthoridChow, KW=13605209900en_HK

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