Wanlai Zhu, Guorui Zhou, Zao Yi, Hui You, Dongying Wang
{"title":"通过dtp调节和表面改性锥形七芯光纤传感器增强VOCs和湿度检测","authors":"Wanlai Zhu, Guorui Zhou, Zao Yi, Hui You, Dongying Wang","doi":"10.1016/j.snb.2025.138902","DOIUrl":null,"url":null,"abstract":"Fiber optic sensors exhibit unique advantages in environmental monitoring and biomedicine, yet conventional designs face limitations in detection limits and sensitivity. To overcome these challenges, a tapered seven core fiber (SCF) sensing system based on dispersion turning point (DTP) modulation and surface modification enhancement is innovatively proposed in this work. The wavelength sensitivity near the DTP approaches infinity, and the DTP can also serve as an intrinsic self-referencing point during sensing. In humidity (1-92%RH) sensing, the bare fiber achieved a wavelength sensitivity of 0.2025<!-- --> <!-- -->nm/%RH and an intensity sensitivity of 0.086<!-- --> <!-- -->dB/%RH near the DTP. In volatile organic compounds (VOCs) detection, silica sol-gel surface modification amplified the response to polar molecules by 2-4 times, enabling ppb-level pollutant sensing. Specifically, the maximum wavelength sensitivity for ethyl acetate exceeded 1094.2<!-- --> <!-- -->pm/ppm. This study provides a novel integrated solution for the detection of low-concentration VOCs, offering broad application prospects.","PeriodicalId":425,"journal":{"name":"Sensors and Actuators B: Chemical","volume":"62 1","pages":""},"PeriodicalIF":3.7000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced VOCs and Humidity Detection via DTP-Regulated and Surface-Modified Tapered Seven-Core Fiber Sensors\",\"authors\":\"Wanlai Zhu, Guorui Zhou, Zao Yi, Hui You, Dongying Wang\",\"doi\":\"10.1016/j.snb.2025.138902\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Fiber optic sensors exhibit unique advantages in environmental monitoring and biomedicine, yet conventional designs face limitations in detection limits and sensitivity. To overcome these challenges, a tapered seven core fiber (SCF) sensing system based on dispersion turning point (DTP) modulation and surface modification enhancement is innovatively proposed in this work. The wavelength sensitivity near the DTP approaches infinity, and the DTP can also serve as an intrinsic self-referencing point during sensing. In humidity (1-92%RH) sensing, the bare fiber achieved a wavelength sensitivity of 0.2025<!-- --> <!-- -->nm/%RH and an intensity sensitivity of 0.086<!-- --> <!-- -->dB/%RH near the DTP. In volatile organic compounds (VOCs) detection, silica sol-gel surface modification amplified the response to polar molecules by 2-4 times, enabling ppb-level pollutant sensing. Specifically, the maximum wavelength sensitivity for ethyl acetate exceeded 1094.2<!-- --> <!-- -->pm/ppm. This study provides a novel integrated solution for the detection of low-concentration VOCs, offering broad application prospects.\",\"PeriodicalId\":425,\"journal\":{\"name\":\"Sensors and Actuators B: Chemical\",\"volume\":\"62 1\",\"pages\":\"\"},\"PeriodicalIF\":3.7000,\"publicationDate\":\"2025-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Sensors and Actuators B: Chemical\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://doi.org/10.1016/j.snb.2025.138902\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, ANALYTICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sensors and Actuators B: Chemical","FirstCategoryId":"92","ListUrlMain":"https://doi.org/10.1016/j.snb.2025.138902","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
Enhanced VOCs and Humidity Detection via DTP-Regulated and Surface-Modified Tapered Seven-Core Fiber Sensors
Fiber optic sensors exhibit unique advantages in environmental monitoring and biomedicine, yet conventional designs face limitations in detection limits and sensitivity. To overcome these challenges, a tapered seven core fiber (SCF) sensing system based on dispersion turning point (DTP) modulation and surface modification enhancement is innovatively proposed in this work. The wavelength sensitivity near the DTP approaches infinity, and the DTP can also serve as an intrinsic self-referencing point during sensing. In humidity (1-92%RH) sensing, the bare fiber achieved a wavelength sensitivity of 0.2025 nm/%RH and an intensity sensitivity of 0.086 dB/%RH near the DTP. In volatile organic compounds (VOCs) detection, silica sol-gel surface modification amplified the response to polar molecules by 2-4 times, enabling ppb-level pollutant sensing. Specifically, the maximum wavelength sensitivity for ethyl acetate exceeded 1094.2 pm/ppm. This study provides a novel integrated solution for the detection of low-concentration VOCs, offering broad application prospects.
期刊介绍:
Sensors & Actuators, B: Chemical is an international journal focused on the research and development of chemical transducers. It covers chemical sensors and biosensors, chemical actuators, and analytical microsystems. The journal is interdisciplinary, aiming to publish original works showcasing substantial advancements beyond the current state of the art in these fields, with practical applicability to solving meaningful analytical problems. Review articles are accepted by invitation from an Editor of the journal.