FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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A Thin-Core Fiber Modal Interferometer for Liquid-Level Sensing |
XU Ben1, LI Jian-Qing1*, LI Yi2, DONG Xin-Yong2 |
1Faculty of Information Technology, Macau University of Science and Technology, Macao SAR 999078 2College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018
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Cite this article: |
XU Ben, LI Jian-Qing, LI Yi et al 2012 Chin. Phys. Lett. 29 104209 |
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Abstract A fiber-optic liquid-level sensor is proposed and experimentally demonstrated. It is a Mach–Zehnder interferometer (MZI) composed of a thin-core single-mode fiber (TCSMF) without coating sandwiched between two single-mode fibers (SMFs). The transmission spectrum properties of the MZI modified by liquid around the TCSMF are used for detecting the liquid level. It is found that the sensor exhibits an excellent linear relationship between the level and the shift of interference dip wavelength and its achieved sensitivities are 0.160 nm/mm and 0.288 nm/mm for liquid with an RI of 1.3330 and 1.3696, respectively. Employing the spectrum differential integration (SDI) method to analyze transmission spectra can increase the detecting resolution of the liquid level. Due to its advantages of an extremely easy fabrication process, high sensitivity and a large sensing range, the sensor is an ideal candidate for continuous liquid level sensing.
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Received: 05 March 2012
Published: 01 October 2012
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PACS: |
42.81.Pa
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(Sensors, gyros)
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07.60.Ly
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(Interferometers)
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07.07.Df
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(Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)
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[1] Zhang M J and Li S W 2010 Int. Conf. Comput. Application Syst. Modeling (Taiyuan, China 22–24 October 2010) pV7-144 [2] Donlagic D 2002 Rev. Sci. Instrum. 73 464 [3] Reverter F, Li X J and Meijer G C M 2007 Sens. Actuators A 138 1 [4] Singh H K, Chakroborty S K, Talukdar H, Singh N M and Bezboruah T 2011 IEEE Sens. J. 11 391 [5] Lu T, Li Z J, Xia D Q, He K H and Zhang G Y 2009 Rev. Sci. Instrum. 80 033104 [6] Guo T, Zhao Q D, Dou Q Y, Zhang H, Xue L F, Huang G L and Dong X L 2005 IEEE Photon. Technol. Lett. 17 2400 [7] Sohn K R and Shim J H 2009 Sens. Actuators A 152 248 [8] Lai C W, Lo Y L, Yur J P and Chuang C H 2012 IEEE Sens. J. 12 827 [9] Lu T and Yang S P 2007 Appl. Opt. 46 3682 [10] Khaliq S, James S W and Tatam R P 2001 Opt. Lett. 26 1224 [11] Yun B Y, Chen N and Cui Y P 2007 IEEE Photon. Technol. Lett. 19 1747 [12] Dong X W and Zhao R F 2010 Opt. Laser Technol. 42 214 [13] Jiang Q, Hu D B and Yang M 2011 Sens. Actuators A 170 62 [14] Chandani S M and Jaeger N A F 2007 Opt. Eng. 46 114401 [15] Lomer M, Quintela A, López-Amo M, Zubia J and López-Higuera J M 2007 Meas. Sci. Technol. 18 2261 [16] Li B, Jiang L, Wang S, Zhou L, Xiao H and Tsai H L 2011 Sensors 11 5729 [17] Xia T H, Zhang A P, Gu B B and Zhu J J 2010 Opt. Commun. 283 2136 [18] Xu B, Li Y, Dong X Y, Jin S Z and Zhang Z X 2012 Chin. Phys. Lett. 29 094203 [19] Wu Q, Semenova Y L Y, Wang P F and Farrell G 2011 Opt. Express 19 7937 [20] Fu H Y, Shu X W, Zhang A P, Liu W S, Zhang L, He S L and Bennion I 2011 IEEE Sens. J. 11 2878 [21] Chen T, Chen R, Lu P, Q Chen and Chen K P 2011 Electron. Lett. 47 1093 [22] Zhao Y, Jin Y X and Wang J F 2011 Int. Conf. Electron. Optoelectron. (Hangzhou, China 29–31 July 2011) pV3-214 [23] Antonio-Lopez J E, Sanchez-Mondragon J J, LiKamWa P and May-Arrioja D A 2011 Opt. Lett. 36 3425 [24] Li Y, Harris E, Chen L and Bao X 2010 Opt. Express 18 8135 |
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