Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/141454
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dc.contributor.authorLi, Kaiweien_US
dc.contributor.authorZhang, Nancy Meng Yingen_US
dc.contributor.authorZhang, Nanen_US
dc.contributor.authorZhang, Tingen_US
dc.contributor.authorLiu, Guigenen_US
dc.contributor.authorWei, Leien_US
dc.date.accessioned2020-06-08T09:00:02Z-
dc.date.available2020-06-08T09:00:02Z-
dc.date.issued2018-
dc.identifier.citationLi, K., Zhang, N. M. Y., Zhang, N., Zhang, T., Liu, G., & Wei, L. (2018). Spectral characteristics and ultrahigh sensitivities near the dispersion turning point of optical microfiber couplers. Journal of Lightwave Technology, 36(12), 2409-2415. doi:10.1109/JLT.2018.2815558en_US
dc.identifier.issn0733-8724en_US
dc.identifier.urihttps://hdl.handle.net/10356/141454-
dc.description.abstractWe present a systematic study on the spectral characteristics and ultrahigh sensitivity near the dispersion turning point (DTP) of optical microfiber couplers. Numerical simulations reveal that a DTP exists when the group effective refractive index (RI) difference between the even mode and the odd mode equals zero, where both ultrahigh positive RI sensitivities and negative RI sensitivities can be achieved. The position of the DTP is dependent on the coupler width, and it always exists over the surrounding RI (SRI) range of 1.333-1.41, which enables the ultrasensitive RI sensing in this wide RI range. Then, we studied the interference spectra characteristics around the DTP both theoretically and experimentally. We further experimentally demonstrate ultrahigh sensitivities of 59624 nm/refractive index unit (RIU) and -58470 nm/RIU around the SRI of 1.333 and 26999 nm/RIU and -29267 nm/RIU around the SRI of 1.35, respectively. High figure of merits of 4192 and 5280 are also achieved around the SRI of 1.333 and 1.35, respectively. Finally, utilizing the exceptional RI sensitivity, we demonstrate an ultrasensitive temperature sensor with a negative sensitivity of -15.23 nm/°C and a positive sensitivity of +16.78 nm/°C.en_US
dc.description.sponsorshipMOE (Min. of Education, S’pore)en_US
dc.language.isoenen_US
dc.relation.ispartofJournal of Lightwave Technologyen_US
dc.rights© 2018 IEEE. All rights reserved.en_US
dc.subjectEngineering::Electrical and electronic engineeringen_US
dc.titleSpectral characteristics and ultrahigh sensitivities near the dispersion turning point of optical microfiber couplersen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US
dc.contributor.organizationCNRS International NTU THALES Research Allianceen_US
dc.identifier.doi10.1109/JLT.2018.2815558-
dc.identifier.scopus2-s2.0-85043777540-
dc.identifier.issue12en_US
dc.identifier.volume36en_US
dc.identifier.spage2409en_US
dc.identifier.epage2415en_US
dc.subject.keywordsDispersion Turning Pointen_US
dc.subject.keywordsOptical Fiber Sensorsen_US
item.fulltextNo Fulltext-
item.grantfulltextnone-
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