基于光纤气泡和纤芯失配的Mach-Zehnder干涉液体折射率传感器

李辉栋; 傅海威; 邵敏; 赵娜; 乔学光; 刘颖刚; 李岩; 闫旭

doi:10.7498/aps.62.214209

摘要

介绍了一种基于光纤气泡和纤芯失配的Mach-Zehnder干涉液体折射率传感器. 将两根纤芯经过腐蚀的普通单模光纤熔接在一起, 在熔接点处形成一个气泡, 在距气泡20 mm处级联一段20 mm的细芯光纤, 再接入一段单模光纤, 形成单模光纤-气泡-单模光纤-细芯光纤-单模光纤结构的传感器. 气泡与光纤芯径失配处的两个节点起到光纤耦合器的作用, 从而形成光纤Mach-Zehnder干涉仪. 环境液体折射率的变化,将使得传感器透射谱能量发生变化, 通过测量干涉谱波峰峰值能量从而实现对折射率的测量. 并对所制作传感器的折射率响应特性进行了实验研究, 实验结果表明干涉谱波峰峰值能量与环境液体折射率之间存在良好的线性关系, 当环境液体折射率变化范围在1.3511.402时, 响应灵敏度为143.537 dB/RIU, 线性度0.996. 该传感器在生物化学领域有较好的应用前景.

关键词:

Abstract

A kind of optical fiber liquid refractive index sensor is proposed based on fiber core etched air-bubble and core diameter mismatched in-fiber Mach-Zehnder interferometer. A core etched standard single-mode fiber is spliced to another core etched standard single-mode fiber (SMF) to form an air bubble at the connecting point, and a 20 mm thinned fiber is cascaded (TCF) by fusion splicing method, which is 20 mm apart from the bubble, then a leading-mode fiber is spliced to the thinned fiber to form a structure of SMF-(air-bubble)-SMF-TCF-SMF in-fiber Mach-Zehnder interferometer liquid refractive index sensor. The air-bubble and the two fiber core diameter mismatched points serve as optical couplers for modes conversion. The transmission spectrum of sensor is studied by experiment. Results shows that the peak power changes with respect to surrounding refractive index with good linearity. The sensitivity of the sensor is 142.537 dB/RIU in the range of 1.3511.402 with linearity of 0.996, making it a good candidate for bio-chemical measurements.

Keywords:

作者及机构信息

1.
西安石油大学理学院光电油气测井与检测教育部重点实验室, 西安 710065;

2.
西北大学物理系, 西安 710069

基金项目: 国家自然科学基金(批准号: F050304, F0502, 61240028)、国家高技术研究发展计划 (863计划) (批准号: 2009AA06Z203)、陕西省教育厅重点实验室科研计划项目 (批准号: 12JS077) 资助的课题.

Authors and contacts

1.
Ministry of Education Key Laboratory on Photoelectric oil-gas Logging and detecting, School of Science, Xi’an Shiyou University, Xi’an 710065, China;

2.
Department of Physics, Northwest University, Xi’an 710069, China

Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. F050304, F0502, 61240028), the National High Technology Research and Development Program of China (Grant No. 2009AA06Z203), and the Research Foundation of Education Bureau of Shaanxi Province, China (Grant No. 12JS077).

参考文献

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[5]	Rindorf L H, Jensen J B, Dufva H M 2006 Optics Express 14 8224
[6]	Fan Y, Zhu T, Shi L 2011 Applied Optics 50 4604
[7]	Cao Y, Yang Y F, Yang X F, Tong Z R 2012 Chinese Optics Letters 10 030605
[8]	Liang R B, Sun Q Z, Wo J H, Liu D M 2011 ActaPhys.Sin.60 104221 (in Chinese) [梁瑞冰, 孙琪真, 沃江海, 刘德明 2011 物理学报 60 104221]
[9]	Reeves R, Webb D J, Bennion I, Neal R 2002 Review of Scientific Instruments 73 1702
[10]	Tian Z B, Yam S S H, Barnes J, Bock W 2008 IEEE Photonics Technology Letters 20 626
[11]	Xia T H, Zhang A P, Gu B B, Zhu J J 2010 Optics Communications 283 2136
[12]	Li L C, Xia L, Xie Z H, Liu D M 2012 Optics Express 20 11109
[13]	Rong Q Z, Qiao X G, Wang R H, Sun H, Hu M L, Feng Z Y 2012 IEEE Sensors Journal12 2501
[14]	Qiu S J, Chen Y, Kou J L, Xu F, Lu Y Q 2011 Applied Optics 50 4328
[15]	Ma Y, Qiao X G, Guo T, Wang R H, Zhang J, Weng Y Y, Feng Z Y 2012 Optics Letters 37 323
[16]	Guo Y 2010 MS Dissertation (chengdu: University of Electronic Science And Technology of China) (in Chinese) [郭宇 2010 硕士学位论文 (成都: 电子科技大学)]
[17]	Villatoro J, Monzón-Hernández D, 2006 IEEE. Journal of Lightwave Technology 24 1409
[18]	Harris J, Lu P, Larocque H, Xu Y P, Chen L, Bao X Y 2013 Optics Express 21 9996
[19]	Zhu J J, Zhang A P, Xia T H, He S L, Xue W 2010 IEEE Sensors Journal 10 1415
[20]	Pang F F, Liu H H, Guo H R, Liu Y Q, Zeng X L, Chen N, Chen Z Y, Wang T Y 2011 IEEE Sensors Journal 11 2395

施引文献

[1]	Tian Z B, Yam S S H, Loock H P 2008 Optics letters 33 1105
[2]	Gong Y, Guo Y, Rao Y J, Zhao T, Wu Y, Ran Z L 2011 ActaPhys. Sin. 60 064202 (in Chinese) [龚元, 郭宇, 饶云江, 赵天, 吴宇, 冉曾令 2011 物理学报 60 064202]
[3]	Nguyen L V, Vasiliev M, Alameh K 2011 IEEE Photonics Technology Letters 23 450
[4]	Yin Z H, Zhang X B, Liu Y Q, Pang F F, Wang T Y 2012 APC Technical Digest OSA: AF4A.72.pdf
[5]	Rindorf L H, Jensen J B, Dufva H M 2006 Optics Express 14 8224
[6]	Fan Y, Zhu T, Shi L 2011 Applied Optics 50 4604
[7]	Cao Y, Yang Y F, Yang X F, Tong Z R 2012 Chinese Optics Letters 10 030605
[8]	Liang R B, Sun Q Z, Wo J H, Liu D M 2011 ActaPhys.Sin.60 104221 (in Chinese) [梁瑞冰, 孙琪真, 沃江海, 刘德明 2011 物理学报 60 104221]
[9]	Reeves R, Webb D J, Bennion I, Neal R 2002 Review of Scientific Instruments 73 1702
[10]	Tian Z B, Yam S S H, Barnes J, Bock W 2008 IEEE Photonics Technology Letters 20 626
[11]	Xia T H, Zhang A P, Gu B B, Zhu J J 2010 Optics Communications 283 2136
[12]	Li L C, Xia L, Xie Z H, Liu D M 2012 Optics Express 20 11109
[13]	Rong Q Z, Qiao X G, Wang R H, Sun H, Hu M L, Feng Z Y 2012 IEEE Sensors Journal12 2501
[14]	Qiu S J, Chen Y, Kou J L, Xu F, Lu Y Q 2011 Applied Optics 50 4328
[15]	Ma Y, Qiao X G, Guo T, Wang R H, Zhang J, Weng Y Y, Feng Z Y 2012 Optics Letters 37 323
[16]	Guo Y 2010 MS Dissertation (chengdu: University of Electronic Science And Technology of China) (in Chinese) [郭宇 2010 硕士学位论文 (成都: 电子科技大学)]
[17]	Villatoro J, Monzón-Hernández D, 2006 IEEE. Journal of Lightwave Technology 24 1409
[18]	Harris J, Lu P, Larocque H, Xu Y P, Chen L, Bao X Y 2013 Optics Express 21 9996
[19]	Zhu J J, Zhang A P, Xia T H, He S L, Xue W 2010 IEEE Sensors Journal 10 1415
[20]	Pang F F, Liu H H, Guo H R, Liu Y Q, Zeng X L, Chen N, Chen Z Y, Wang T Y 2011 IEEE Sensors Journal 11 2395

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