{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,4]],"date-time":"2026-06-04T18:14:26Z","timestamp":1780596866192,"version":"3.54.1"},"reference-count":35,"publisher":"MDPI AG","issue":"16","license":[{"start":{"date-parts":[[2022,8,19]],"date-time":"2022-08-19T00:00:00Z","timestamp":1660867200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["61965009"],"award-info":[{"award-number":["61965009"]}]},{"name":"National Natural Science Foundation of China","award":["61805050"],"award-info":[{"award-number":["61805050"]}]},{"name":"National Natural Science Foundation of China","award":["62075047"],"award-info":[{"award-number":["62075047"]}]},{"name":"National Natural Science Foundation of China","award":["61965006"],"award-info":[{"award-number":["61965006"]}]},{"name":"National Natural Science Foundation of China","award":["61975038"],"award-info":[{"award-number":["61975038"]}]},{"name":"National Natural Science Foundation of China","award":["61827819"],"award-info":[{"award-number":["61827819"]}]},{"name":"National Natural Science Foundation of China","award":["61964005"],"award-info":[{"award-number":["61964005"]}]},{"name":"National Natural Science Foundation of China","award":["2020GXNSFAA238040"],"award-info":[{"award-number":["2020GXNSFAA238040"]}]},{"name":"National Natural Science Foundation of China","award":["AD19245117"],"award-info":[{"award-number":["AD19245117"]}]},{"name":"National Natural Science Foundation of Guangxi","award":["61965009"],"award-info":[{"award-number":["61965009"]}]},{"name":"National Natural Science Foundation of Guangxi","award":["61805050"],"award-info":[{"award-number":["61805050"]}]},{"name":"National Natural Science Foundation of Guangxi","award":["62075047"],"award-info":[{"award-number":["62075047"]}]},{"name":"National Natural Science Foundation of Guangxi","award":["61965006"],"award-info":[{"award-number":["61965006"]}]},{"name":"National Natural Science Foundation of Guangxi","award":["61975038"],"award-info":[{"award-number":["61975038"]}]},{"name":"National Natural Science Foundation of Guangxi","award":["61827819"],"award-info":[{"award-number":["61827819"]}]},{"name":"National Natural Science Foundation of Guangxi","award":["61964005"],"award-info":[{"award-number":["61964005"]}]},{"name":"National Natural Science Foundation of Guangxi","award":["2020GXNSFAA238040"],"award-info":[{"award-number":["2020GXNSFAA238040"]}]},{"name":"National Natural Science Foundation of Guangxi","award":["AD19245117"],"award-info":[{"award-number":["AD19245117"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this work, a simple side-polish plastic optical fiber (POF)-based surface plasmon resonance (SPR) sensor is proposed and demonstrated for simultaneous measurement of refractive index (RI) and liquid level. The effects of side-polish depths on the sensing performance were studied. The experimental results show that the SPR peak wavelength will be changed as the RI changes, and the SPR peak intensity will be changed with the liquid level variation. By monitoring the changes in peak wavelength and intensity, the RI and liquid level can be detected simultaneously. Experimental results show that an RI sensitivity of 2008.58 nm\/RIU can be reached at an RI of 1.39. This sensor has the advantages of simple structure and low cost, which has a good prospect in the field of biochemical sensing.<\/jats:p>","DOI":"10.3390\/s22166241","type":"journal-article","created":{"date-parts":[[2022,8,22]],"date-time":"2022-08-22T01:56:40Z","timestamp":1661133400000},"page":"6241","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":27,"title":["Side-Polish Plastic Optical Fiber Based SPR Sensor for Refractive Index and Liquid-Level Sensing"],"prefix":"10.3390","volume":"22","author":[{"given":"Chuanxin","family":"Teng","sequence":"first","affiliation":[{"name":"Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shiyuan","family":"Ying","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7900-0422","authenticated-orcid":false,"given":"Rui","family":"Min","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Cognitive Neuroscience and Learning, Center for Cognition and Neuroergonomics, Beijing Normal University at Zhuhai, Zhuhai 519087, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shijie","family":"Deng","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0299-0955","authenticated-orcid":false,"given":"Hongchang","family":"Deng","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ming","family":"Chen","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoxue","family":"Chu","sequence":"additional","affiliation":[{"name":"School of Life and Environmental Sciences, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Libo","family":"Yuan","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9052-119X","authenticated-orcid":false,"given":"Yu","family":"Cheng","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Minmin","family":"Xue","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Optoelectronic Information Processing, School of Optoelectronic Engineering, Guilin University of Electronic Technology, Guilin 541004, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2022,8,19]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"71118","DOI":"10.1109\/JSEN.2007.897946","article-title":"Fiber-Optic Sensors Based on Surface Plasmon Resonance: A Comprehensive Review","volume":"7","author":"Sharma","year":"2007","journal-title":"IEEE Sens. J."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"41475","DOI":"10.1364\/OE.442115","article-title":"Analyzing broadband tunable metamaterial absorbers by using the symmetry model","volume":"29","author":"Xiong","year":"2021","journal-title":"Opt. Express."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"398","DOI":"10.1007\/BF01391532","article-title":"Excitation of nonradiative surface plasma waves in silver by the method of frustrated total reflflection","volume":"216","author":"Otto","year":"1968","journal-title":"Z. Physik."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"2135","DOI":"10.1515\/zna-1968-1247","article-title":"Radiative decay of non-radiative surface Plasmon excited by light","volume":"23","author":"Kretschmann","year":"1968","journal-title":"Z. F\u00fcr Nat. A"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"3883","DOI":"10.1007\/s00216-014-8411-6","article-title":"Review of plasmonic fiber optic biochemical sensors: Improving the limit of detection","volume":"407","author":"Caucheteur","year":"2015","journal-title":"Anal. Bioanal. Chem."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1016\/j.yofte.2018.03.008","article-title":"A Review of advancements (2007\u20132017) in plasmonics-based optical fiber sensors","volume":"43","author":"Sharma","year":"2018","journal-title":"Opt. Fiber. Technol."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"213","DOI":"10.1016\/0925-4005(93)80021-3","article-title":"A fiber-optic chemical sensor based on surface plasmon resonance","volume":"12","author":"Jorgenson","year":"1993","journal-title":"Sens. Actuators B Chem."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"221","DOI":"10.1016\/0925-4005(93)80022-4","article-title":"Fiber-optic sensor based on surface plasmon interrogation","volume":"12","author":"Maria","year":"1993","journal-title":"Sens. Actuators B"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"1287","DOI":"10.1109\/LPT.2008.926874","article-title":"An Enhanced Optical Multimode Fiber Sensor Based on Surface Plasmon Resonance with Cascaded Structure","volume":"20","author":"Lin","year":"2008","journal-title":"IEEE Photon. Technol. Lett."},{"key":"ref_10","first-page":"1","article-title":"Gold-immobilized Photonic Crystal Fiber-based SPR Biosensor for Detection of Malaria Disease in Human Body","volume":"99","author":"Chaudhary","year":"2021","journal-title":"IEEE Sens. J."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"137802","DOI":"10.7498\/aps.69.20200353","article-title":"Multi-channel few-mode multicore fiber based surface plasmon resonance biosensor with open air-hole","volume":"69","author":"Xiao","year":"2020","journal-title":"Acta Phys. Sin."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"341","DOI":"10.1007\/s11082-020-02461-y","article-title":"Hollow-core graded index optical fiber refractive index sensor based on surface plasmon resonance","volume":"52","author":"Nasirifar","year":"2020","journal-title":"Opt. Quant. Electron."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"1659","DOI":"10.1049\/el:19991121","article-title":"Surface plasmon resonance sensing in capillaries","volume":"35","author":"Chinowsky","year":"1999","journal-title":"Electron. Lett."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Teng, C.X., Min, R., Zheng, J., Deng, S.J., Li, M.S., Hou, L., and Yuan, L.B. (2021). Intensity-Modulated Polymer Optical Fiber-Based Refractive Index Sensor: A Review. Sensors, 22.","DOI":"10.3390\/s22010081"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/j.opelre.2017.01.003","article-title":"D-shape polymer optical fibres for surface plasmon resonance sens-ing","volume":"25","author":"Gasior","year":"2017","journal-title":"Opto-Electron. Rev."},{"key":"ref_16","doi-asserted-by":"crossref","unstructured":"Liu, L., Deng, S.J., Zheng, J., Yuan, L.B., Deng, H.C., and Teng, C.X. (2021). An Enhanced Plastic Optical Fiber-Based Surface Plasmon Resonance Sensor with a Double-Sided Polished Structure. Sensors, 21.","DOI":"10.3390\/s21041516"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"529","DOI":"10.1016\/j.snb.2013.10.067","article-title":"High selectivity and sensitivity sensor based on MIP and SPR in tapered plasticoptical fibers for the detection of l-nicotine","volume":"191","author":"Cennamo","year":"2014","journal-title":"Sens. Actuators B Chem."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"493","DOI":"10.1007\/s11468-017-0535-z","article-title":"Gold sputtered U-bent plastic optical fiber probes as SPR- and LSPR-based compact plasmonic sensors","volume":"13","author":"Christopher","year":"2018","journal-title":"Plasmonics"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"163","DOI":"10.1016\/j.sna.2016.04.064","article-title":"Refractive index sensor based on SPR in symmetrically etched plastic optical fibers","volume":"246","author":"Noor","year":"2016","journal-title":"Sens. Actuators A Phys."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"129393","DOI":"10.1016\/j.snb.2020.129393","article-title":"A Review on simple and highly sensitive Plastic Optical Fiber Probes for Bio-Chemical Sensing","volume":"331","author":"Cennamo","year":"2020","journal-title":"Sens. Actuators B Chem."},{"key":"ref_21","first-page":"29","article-title":"Enhancing plasmonic effect in periodic nanometal square prisms with fences and cavities for refractive index and temperature sensing applications","volume":"22","author":"Chiang","year":"2020","journal-title":"J. Nanopart. Res."},{"key":"ref_22","first-page":"10672","article-title":"Simultaneous measurement of salinity, temperature and pressure in seawater using optical fiber SPR sensor","volume":"248","author":"Zhao","year":"2019","journal-title":"Measurement"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1109\/TIM.2022.3218574","article-title":"An Optical Fiber-Based Surface Plasmon Resonance Sensor for Simultaneous Measurement of Temperature and Magnetic Field Intensity","volume":"71","author":"Li","year":"2022","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"4566","DOI":"10.1109\/TIM.2018.2886950","article-title":"Reflective SPR Sensor for Simultaneous Measurement of Nitrate Concentration and Temperature","volume":"68","author":"Zhang","year":"2019","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"2","DOI":"10.1109\/JPHOT.2017.2667878","article-title":"Refractive index and temperature sensing based on surface plasmon resonance and directional resonance coupling in a PCF","volume":"9","author":"Luan","year":"2017","journal-title":"IEEE Photon. J."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"7785","DOI":"10.1109\/JSEN.2022.3155241","article-title":"A Dual-Channel Surface Plasmon Resonance Sensor for the Liquid Refractive Index and Temperature Measurement Based on Hollow-Core Fiber","volume":"22","author":"Zhang","year":"2022","journal-title":"IEEE Sens. J."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"912","DOI":"10.1016\/j.snb.2016.09.164","article-title":"Simultaneous measurement of refractive index and temperature using a SPR-based fiber optic sensor","volume":"242","year":"2017","journal-title":"Sens. Actuators B"},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1109\/TIM.2021.3118090","article-title":"Parallel Polished Plastic Optical Fiber-Based SPR Sensor for Simultaneous Measurement of RI and Temperature","volume":"70","author":"Liu","year":"2021","journal-title":"IEEE Trans. Instrum. Meas."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"4808","DOI":"10.1109\/JLT.2019.2921302","article-title":"Monserrat. SPR Fiber Tip Sensor for the Simultaneous Measurement of Refractive Index, Temperature, and Level of a Liquid","volume":"37","author":"Monserrat","year":"2019","journal-title":"J. Lightwave Technol."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"6677","DOI":"10.1109\/JSEN.2022.3155723","article-title":"Plastic Optical Fiber Based SPR Sensor for Simultaneous Measurement of Refractive Index and Liquid Level","volume":"22","author":"Teng","year":"2022","journal-title":"IEEE Sens. J."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"820211","DOI":"10.1117\/12.906590","article-title":"The polishing detection method of side-polished fiber","volume":"8202","author":"Zhang","year":"2011","journal-title":"Proc. SPIE."},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Raether, H. (1988). Surface Plasmons on Smooth Surfaces, Springer.","DOI":"10.1007\/BFb0048317"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"093111","DOI":"10.1063\/1.2721779","article-title":"On the performance of different bimetallic combinations in surface plasmon resonance based fiber optic sensors","volume":"101","author":"Sharma","year":"2007","journal-title":"J. Appl. Phys."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"272","DOI":"10.1295\/polymj.28.272","article-title":"Optimization of the refractive-index distribution of high-bandwidth GI polymer optical fiber based on both modal and material dispersions","volume":"28","author":"Ishigure","year":"1996","journal-title":"Polym. J."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"18515","DOI":"10.1038\/s41598-021-98001-z","article-title":"Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure","volume":"11","author":"Ming","year":"2021","journal-title":"Sci. Rep."}],"container-title":["Sensors"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1424-8220\/22\/16\/6241\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:12:28Z","timestamp":1760141548000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1424-8220\/22\/16\/6241"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,8,19]]},"references-count":35,"journal-issue":{"issue":"16","published-online":{"date-parts":[[2022,8]]}},"alternative-id":["s22166241"],"URL":"https:\/\/doi.org\/10.3390\/s22166241","relation":{},"ISSN":["1424-8220"],"issn-type":[{"value":"1424-8220","type":"electronic"}],"subject":[],"published":{"date-parts":[[2022,8,19]]}}}