基于多芯光纤级联布喇格光纤光栅的横向压力与温度同时测量

蒋友华; 傅海威; 张静乐; 贾振安; 乔学光

doi:doi:10.3788/gzxb20174601.0106002

光子学报, 2017, 46 (1): 0106002, 网络出版: 2017-02-09

基于多芯光纤级联布喇格光纤光栅的横向压力与温度同时测量

Simultaneous Measurement of Transverse Pressure and Temperature Based on Multi-core Fiber Cascaded with Fiber Bragg Grating

论文大纲

蒋友华 ^1,*傅海威 ¹张静乐 ¹贾振安 ¹乔学光 ²

作者单位

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

摘要

提出并制作了一种基于多芯光纤与单模光纤错位构成的马赫-曾德尔干涉仪, 将其与光纤布喇格光栅级联, 形成的全光纤传感系统可实现横向压力和温度双参量同时测量.马赫-曾德尔干涉仪是利用多芯光纤和单模光纤的模场不匹配而发生模间干涉, 当外界横向压力直接作用在多芯光纤内部光场, 干涉仪具有较高的灵敏度.实验结果表明: 马赫-曾德尔干涉仪压力灵敏度为28.57 nm/(N·mm-1), 线性度为0.997, 而光纤布喇格光栅在一定范围内对压力变化不敏感; 马赫-曾德干涉仪和光纤布喇格光栅对温度变化都具有较高的线性度, 温度灵敏度分别为56.1 pm/℃和11.3 pm/℃.对于分辨率为0.02 nm的光谱仪, 传感器可实现的压力和温度测量分辨率分别为7.0×10-4N/mm和0.03℃.马赫-曾德尔干涉仪的透射谱和光纤布拉光栅的谐振峰对横向压力和温度的变化有不同的光谱响应, 利用光谱仪对传感器的透射谱实时监测, 方便地实现了压力与温度双参量的测量.该传感器结构简单, 灵敏度高, 可用于不同领域的压力传感.

Abstract

An all-fiber sensing system based on the Mach-Zehnder Interferometer (MZI) and Fiber Bragg Grating (FBG) was proposed for the measurement of transverse pressure and temperature simultaneously. The MZI was fabricated by splicing of a lateral-offset Multi-Core Fiber (MCF) with two single mode fibers, the modal interference was formed due to the mode field mismatch among MCF and Single Mode Fibers (SMFs), which made the external pressure directly acted on the light field inside of the multi-core fiber, thus a high pressure sensitivity of interferometer can be achieved. Experimental results show that the pressure sensitivity of the MZI is 28.57 nm/(N·mm-1), and the linearity is 0.997, while FBG is not sensitive to the pressure change. Both the MZI and the FBG show a good linearity between the wavelength shift and temperature, and the sensitivity is 56.1pm/℃ and 11.3pm/℃, respectively. For a spectrometer with a resolution of 0.02 nm, the proposed sensor can reach a resolution of 7.0×10-4N/mm for pressure and of 0.03℃ for temperature. The transmission spectrum of the MZI and the resonance peaks of the FBG have different spectral responses to pressure and temperature changes. By using optical spectrum analyzer to monitor the wavelength shift of the transmission spectrum of the sensor, so that the dual-parameters of pressure and temperature can be measured conveniently.The proposed sensor has a simple structure a high sensitivity, it can be well applied to transverse pressure measurement.

参考文献

[1] MOKHTA R, OWEN S, KWASN Y, et al. Fiber-optic strain sensor system with temperature compensation for arch bridge condition monitoring［J］.IEEE Sensor Journal, 2012, 12(5): 1470-1476.

[2] LI L T, ZHANG D S , LIU H, et al. Design of an enhanced sensitivity FBG strain sensor and application in highway bridge engineering［J］. Photonic Sensors, 2014, 4(2): 162-167

[3] GONG Y, RAO Y J, GUO Y, et al. Temperature insensitive micro fabry-perot strain sensor fabricated by chemically etching Er-doped fiber［J］. IEEE Photonics Technology Letters, 2009, 21(22):1725-1727.

[4] LI C, XIAO J, GUO T T, et al. Interference characteristics in a Fabry-Perot cavity with graphene membrane for optical fiber pressure sensors［J］. Microsystem Technologies, 2015, 21(11): 2297 -2306.

[5] YU Y Q, CHEN X, HUANG Q D, et al. Enhancing the pressure sensitivity of a Fabry-Perot interferometer using a simplified hollow-core photonic crystal fiber with a microchannel［J］. Applied Physics B, 2015,120(3):461-467.

[6] TIAN Z B, SCOTT S H Y. In-line abrupt taper optical fiber Mach-Zehnder interferometric strain sensor［J］.IEEE Photonics Technology Letters, 2009, 21(3): 161-163.

[7] GONG H P, CHAN C C, CHEN L H, et al. Strain sensor realized by using low-birefringence photonic-crystal-fiber-based sagnac loop［J］. IEEE Photonics Technology Letters, 2010, 22(16):1238-1240.

[8] FU H Y, TAM H Y, SHAO L Y, et al. Pressure sensor realized with polarization-maintaining photonic crystal fiber-based Sagnac interferometer［J］. Applied Optics, 2008, 47(15): 2835-2839.

[9] LIU Z Y , WU C, VINCENT T, et al. Ultrahigh birefringence index-guiding photonic crystal fiber and its application for pressure and temperature discrimination［J］. Optics Letters, 2013, 38(9): 1385-1387.

[10] THOMAS G, GEERT L, ELI V, et al. Transversal load sensing with fiber Bragg gratings in microstructured optical fibers［J］. IEEE Photonics Technology Letters, 2009, 21(1):6-8.

[11] 赵春柳. 基于光子晶体光纤长周期光栅的传感器研究［J］. 光电子·激光, 2011, 22(1):9-12.

ZHAO Chun-liu. Optical fiber sensors based on long-period gratings in photonic crystal fibers［J］.Journal of Optoelectronics·Laser, 2011, 22(1):9-12.

[12] 侯尚林, 韩佳巍, 张睿睿, 等. 可调谐长周期光子晶体光纤光栅压力传感的实验研［J］. 光电子·激光, 2010, 21(1):5-7.

HOU Shang-lin, HAN Jia-wei, ZHANG Rui-rui, et al. Study on sensing characteristics of tunable long-period gratings imprinted by mechanical pressure in photonic crystal fiber［J］. Journal of Optoelectronics·Laser, 2010, 21(1):5-7.

[13] WANG Y P, HUANG X Q, WANG Y. Temperature insensitive transverse load sensing with improved accuracy using stress induced birefringence effects of fiber Bragg grating［J］. Optik, 2011,122(21):1914-1917.

[14] 付兴虎, 谢海洋, 王柳柳, 等. 单模与多模光纤级联型压力传感器［J］. 光子学报, 2015, 4(44): 0406005.

FU Xing-hu, XIE Hai-yang, WANG Liu-liu, et al. Pressure sensor based on cascading single mode fiber with multimode fiber［J］. Acta Photonica Sinica, 2015, 4(44): 0406005.

[15] 孙婷婷, 裴世鑫, 李金花. 基于倾斜光纤Bragg光栅的横向压力传感器研究［J］. 光电子·激光, 2015, 26(10): 1854-1859.

SUN Ting-ting, PEI Shi-xin, LI Jin-hua. A transverse strain sensor based on tilted fiber Bragg grating.［J］. Journal of Optoelectronics·Laser, 2015, 26(10): 1854-1859.

[16] LI L C, LI X, XIE Z H, et al. Simultaneous measurement of refractive index and temperature using thinned fiber based Mach-Zehnder interferometer［J］. Optics Communications, 2012, 285(19):3945-3949.

[17] LU Y F, SHEN C Y, ZHONG C, et al. Refractive index and temperature sensor based on double-pass M-Z interferometer with an FBG［J］. IEEE Photonics Technology Letters, 2014, 26(11): 1124-1127.

[18] YU S W, PEI L, LIU C, et al. Simultaneous strain and temperature measurement using a no-core fiber-based modal interferometer with embedded fiber Bragg grating［J］. Optical Engineering, 2014,53(8):1-4.

蒋友华, 傅海威, 张静乐, 贾振安, 乔学光. 基于多芯光纤级联布喇格光纤光栅的横向压力与温度同时测量[J]. 光子学报, 2017, 46(1): 0106002. JIANG You-hua, FU Hai-wei, ZHANG Jin-le, JIA Zhen-an, QIAO Xue-guang. Simultaneous Measurement of Transverse Pressure and Temperature Based on Multi-core Fiber Cascaded with Fiber Bragg Grating[J]. ACTA PHOTONICA SINICA, 2017, 46(1): 0106002.

基于多芯光纤级联布喇格光纤光栅的横向压力与温度同时测量

关于本站 Cookie 的使用提示

全站搜索

基于多芯光纤级联布喇格光纤光栅的横向压力与温度同时测量

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索