دورية أكاديمية
A Cost-Effective Relative Humidity Sensor Based on Side Coupling Induction Technology
| العنوان: | A Cost-Effective Relative Humidity Sensor Based on Side Coupling Induction Technology |
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| المؤلفون: | Yingzi Zhang, Yulong Hou, Wenyi Liu, Huixin Zhang, Yanjun Zhang, Zhidong Zhang, Jing Guo, Jia Liu, Liang Zhang, Qiu-lin Tan |
| المصدر: | Sensors, Vol 17, Iss 5, p 944 (2017) |
| بيانات النشر: | MDPI AG, 2017. |
| سنة النشر: | 2017 |
| المجموعة: | LCC:Chemical technology |
| مصطلحات موضوعية: | relative humidity sensor, side coupling induction technology, agarose, twisted macro-bend coupling structure, Chemical technology, TP1-1185 |
| الوصف: | A intensity-modulated optical fiber relative humidity (RH) sensor based on the side coupling induction technology (SCIT) is presented and experimentally demonstrated. The agarose gel and the twisted macro-bend coupling structure are first combined for RH sensing applications. The refractive index (RI) of the agarose gel increases with the increase of the RH and is in linear proportion from 20 to 80%RH. The side coupling power, which changes directly with the RI of the agarose gel, can strip the source noise from the sensor signal and improve the signal to noise ratio substantially. The experiment results show that the sensitivity of the proposed sensor increases while the bend radius decreases. When the bend radius is 8 mm, the sensor has a linear response from 40% to 80% RH with the sensitivity of 4.23 nW/% and the limit of detection of 0.70%. A higher sensitivity of 12.49 nW/% is achieved when RH raises from 80% to 90% and the limit of detection decreases to 0.55%. Furthermore, the proposed sensor is a low-cost solution, offering advantages of good reversibility, fast response time, and compensable temperature dependence. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1424-8220 17050944 |
| Relation: | http://www.mdpi.com/1424-8220/17/5/944; https://doaj.org/toc/1424-8220 |
| DOI: | 10.3390/s17050944 |
| URL الوصول: | https://doaj.org/article/9d367bca59c44a318be8507cfa683278 |
| رقم الأكسشن: | edsdoj.9d367bca59c44a318be8507cfa683278 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 14248220 17050944 |
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| DOI: | 10.3390/s17050944 |