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Enhanced sensitivity of heterocore structure surface plasmon resonance sensors based on local microstructures

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dc.contributor.author Zhu, Wenjie
dc.contributor.author Huang, Qing
dc.contributor.author Wang, Yong
dc.contributor.author Lewis, Elfed
dc.contributor.author Yang, Minghong
dc.date.accessioned 2020-08-31T08:40:26Z
dc.date.available 2020-08-31T08:40:26Z
dc.date.issued 2018
dc.identifier.citation Zhu, WJ;Huang, Q;Wang, Y;Lewis, E;Yang, MH (2018) 'Enhanced sensitivity of heterocore structure surface plasmon resonance sensors based on local microstructures'. Optical Engineering, 57 . en_US
dc.identifier.issn 0091-3286
dc.identifier.uri http://hdl.handle.net/10344/9156
dc.description peer-reviewed en_US
dc.description.abstract A method to improve the refractive index (RI) and temperature sensitivities of optical fiber based on surface plasmon resonance (SPR) sensors is proposed and experimentally demonstrated. It is realized by using a precision femtosecond laser system to manufacture microstructures on a heterocore optical fiber structure (multimode single-mode multimode fiber, MSM). The microstructured MSM structure fiber-optic sensors were coated with 60-nm gold (Au) film to test and verify RI sensing, obtaining an enhancement of the maximum sensitivity range from 2845.18 to 3313.15 nm/RIU. The fabricated sensors were additionally coated with a layer of polydimethylsiloxane, which has a high negative thermos-optic coefficient, to conduct a series of temperature sensing experiments. Experimental results showed that the maximum sensitivity increased from 1.1998 to 1.5646 nm/degrees C. Compared with nonmicrostructured sensors, the RI and temperature sensitivity of the proposed sensor has increased 16.4% and 30.2%, respectively. The simply fabricated, low-cost, and high-sensitivity SPR sensor has promising applications in many areas, especially in the biochemical field. (C) 2018 society of Photo-optical Instrumentation Engineers (SPIE). en_US
dc.language.iso eng en_US
dc.publisher International Society for Optics and Photonics en_US
dc.relation.ispartofseries Optical Engineering;57 (7)
dc.relation.uri http://dx.doi.org/10.1117/1.OE.57.7.07610
dc.rights 2018 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited en_US
dc.subject heterocore structure en_US
dc.subject surface plasmon resonance en_US
dc.subject femtosecond laser en_US
dc.subject microstructures en_US
dc.subject refractive index and temperature sensing en_US
dc.title Enhanced sensitivity of heterocore structure surface plasmon resonance sensors based on local microstructures en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.date.updated 2020-08-31T08:30:17Z
dc.description.version PUBLISHED
dc.identifier.doi 10.1117/1.OE.57.7.076105
dc.contributor.sponsor National Natural Science Foundation of China en_US
dc.relation.projectid 61575151 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 2868318
dc.internal.copyrightchecked Yes
dc.identifier.journaltitle Optical Engineering
dc.description.status peer-reviewed


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