Refractive Index Insensitive Temperature Sensor Based on Cascading Single Mode Fiber with Few Mode Fiber
FU Xing-hu, ZHANG Shun-yang, LIU Qiang, XIE Hai-yang, HAN Xue-wen, YANG Chuan-qing, FU Guang-wei, BI Wei-hong*
School of Information Science and Engineering, The Key Laboratory for Special Fiber and Fiber Sensor of Hebei Province, Yanshan University, Qinhuangdao 066004, China
Abstract：A refractive index insensitive temperature sensor is proposed base on cascading single mode fiber with few mode fiber(FMF). During the sensor preparation, the splicing current is set to 100 mA, and a section of FMF is no core-offset splicing between two single-mode fibers. Therefore, it can motivate the transmission mode preferably and form optical fiber Mach-Zehnder interferometer. The mode phase difference in FMF will be changed according to the outside environment. It will cause interference fringe shift. The parameter to be measured can be achieved by detecting the amount shift of interference spectrum. The FMF can transmit four modes with LP01, LP11, LP21, LP02. The transmission spectrum is also analyzed, which shows that they have two modes of LP01 and LP11 in sensor with the length of 81.5 mm. In the refractive index and temperature sensing experiment, the cascading FMF sensor with the length of 81.5 mm is used. The results show that the transmission spectrum of sensor appears obvious blue shift as temperature is increasing, the temperature sensitivity can be up to -85.9 pm·℃-1 within the range of 27.6~93.8 ℃ with good linearity. The refractive index sensitivity is 3.697 34 nm·RIU-1 within the range of 1.347 1~1.443 9. There is no obvious shift phenomenon in the transmission spectrum with the feature of refractive index insensitive. Therefore, compared with the traditional cladding mode and multimode interferometric fiber-optic sensor, the proposed sensor based on FMF is easier to control and analyze transmission mode has the advantages of simple structure, easy process and high sensitivity. It can avoid cross-sensitivity between temperature and refractive index measurement. Thus, it can be used for temperature detection of power system, biomedicine, aerospace and other fields.
付兴虎，张顺杨，刘 强，谢海洋，韩学文，杨传庆，付广伟，毕卫红* . 折射率不敏感的级联型单模-少模-单模光纤温度传感器 [J]. 光谱学与光谱分析, 2016, 36(11): 3726-3731.
FU Xing-hu, ZHANG Shun-yang, LIU Qiang, XIE Hai-yang, HAN Xue-wen, YANG Chuan-qing, FU Guang-wei, BI Wei-hong*. Refractive Index Insensitive Temperature Sensor Based on Cascading Single Mode Fiber with Few Mode Fiber. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(11): 3726-3731.
[1] ZHAO Na, FU Hai-wei, SHAO Min, et al(赵 娜，傅海威，邵 敏，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2014, 34(6): 1722. [2] LOU Jun, XU Hong-zhi, HUANG Jie, et al(楼 俊，许宏志，黄 杰，等). Chinese Journal of Lasers(中国激光), 2014, 41(11): 1105006. [3] YANG Kai, XU Ben, LI Yi, et al(杨 凯，徐 贲，李 裔，等). Journal of Optoelectronics·Laser(光电子激光), 2014, 25(7): 1259. [4] Chen Daru, Jiang X G. Microwave & Optical Technology Letters, 2013, 55(7): 1700. [5] HUANG Ze-jia, LI Qiang, XU Ya-qin, et al(黄泽铗，李 强，徐雅芹，等). Chinese Journal of Lasers(中国激光), 2013, 40(6): 0605001. [6] LI Qiang, HUANG Ze-jia, XU Ya-qin, et al(李 强，黄泽铗，徐雅芹，等). Infrared and Laser Engineering(红外与激光工程), 2014, 43(5): 1630. [7] Zhang Y J, Tian X J, Xue L L, et al. IEEE Photonics Technology Letters, 2013, 25(6): 560. [8] Wu Qiang, Agus Muhamad Hatta, Wang Pengfei, et al. IEEE Photonics Technology Letters, 2011, 23(2): 130. [9] YAO Yuan, YI Ben-shun, XIAO Jin-sheng, et al(姚 远，易本顺，肖进胜，等). Applied Laser(应用激光), 2007, 27(3): 192. [10] ZHANG Chen, WANG Gao, LIANG Hai-jian, et al(张 陈，王 高，梁海坚，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2015, 35(4): 1138. [11] Madrakhim Zaynetdinov, Erich M See, Brian Geist, et al. IEEE Sensors Journal, 2015, 15(3): 1908. [12] Cui Ying, Shum Perry Ping, Hu Dora Juan Juan, et al. IEEE Photonics Journal, 2012, 4(5): 1801. [13] WU Tie-sheng, WANG Li, WANG Zhe, et al(伍铁生，王 丽，王 哲，等). Chinese Journal of Lasers(中国激光), 2012, 39(11): 1114002. [14] TONG Zheng-rong, GUO Yang, YANG Xiu-feng, et al(童峥嵘, 郭 阳, 杨秀峰，等). Optics and Precision Engineering(光学精密工程), 2012, 20(5): 921. [15] Hatta Agus Muhamad, Rajan Ginu, Semenova Yuliya, et al. Electronics Letters, 2009, 45(21): 1069. [16] JIANG De-sheng, LI Jian-zhi, MEI Jia-chun(姜德生，李剑芝，梅家纯). Acta Optica Sinica(光学学报), 2004, 24(2): 175. [17] Chang sub Park, Kyung Ii Joo, Shin Won Kang, et al. Journal of the Optical Society of Korea, 2011, 15(4): 329. [18] QI Fei, XIN Yi, DONG Xin-yong, et al(綦 菲，辛 奕，董新永，等). Laser & Optoelectronics Progress(激光与光电子学进展), 2013, 50(1): 010601. [19] Lim K S, Pua C H, Harun S W, et al. Optics & Laser Technology, 2010, 42(2): 377. [20] FU Xing-hu, XIE Hai-yang, ZHU Hong-bin, et al(付兴虎，谢海洋，朱洪彬，等). Acta Optica Sinica(光学学报), 2015, 35(5): 0506002.
