volume | PIER Journals

Abstract

An optical fiber sensor based on thin-core fiber (TCF) and no-core fiber (NCF) interference structures is presented and experimentally demonstrated to measure the curvature and temperature. The fabrication process of the sensor is simple and convenient, and the sensing part is formed by cascading a TCF and an NCF between two single-mode fibers. The dips at resonant wavelengths are generated in the optical transmission spectrum owing to mode interference. The experimental results indicate that an optical curvature sensitivity of -5.76 nm/m^-1 is achieved in the linear range of 0.9895-3.2817 m^-1, and that a temperature sensitivity of 0.18 nm/˚C is obtained in the temperature range of 25-55˚C. Additionally, the cross-sensitivity problem is solved using the coefficient matrix measurement method, and the cross-sensitivity is as low as 0.0312 m^-1/˚C. Therefore, the sensor exhibits a highly reproducible technique and low cross sensitivity, which has a wide range of application prospects in the accurate measurement of mechanical arms and structural health monitoring.

1. Jang, M., J. S. Kim, S. H. Um, S. Yang, and J. Kim, "Ultra-high curvature sensors for multi-bend structures using fiber Bragg gratings," Opt. Express, Vol. 27, No. 3, 2074-2084, Feb. 2019.
doi:10.1364/OE.27.002074 Google Scholar

2. Yang, W., C. Li, M. Wang, X. Yu, J. Fan, Y. Xiong, Y. Yang, and L. Li, "The polydimethylsiloxane coated fiber optic for all fiber temperature sensing based on the multi-thin-multi fiber structure," IEEE Sens. J., Vol. 21, No. 1, 51-56, Jan. 2020.
doi:10.1109/JSEN.2020.2972292 Google Scholar

3. Abbas, L. G., A. Zhou, F. Mumtaz, A. Muhammad, Y. Dai, and R. Parveen, "Temperature and strain sensing with hybrid interferometer," IEEE Sens. J., Vol. 21, No. 23, 26785-26792, Dec. 2021.
doi:10.1109/JSEN.2021.3120798 Google Scholar

4. Hou, Y., J. Wang, X. Wang, Y. Liao, L. Yang, E. Cai, and S. Wang, "Simultaneous measurement of pressure and temperature in seawater with PDMS sealed microfiber Mach-Zehnder interferometer," J. Lightwave Technol., Vol. 38, No. 22, 6412-6421, Nov. 2020.
doi:10.1109/JLT.2020.3012716 Google Scholar

5. Azmi, A., A. Abdullah, M. Noor, M. Ibrahim, R. Ibrahim, T. Tan, and J. Zhang, "Dynamic bending and rotation sensing based on high coherence interferometry in multicore fiber," Opt. Laser Technol., Vol. 135, 106716, Mar. 2021.
doi:10.1016/j.optlastec.2020.106716 Google Scholar

6. Zhang, X., B. Liu, H. Zhang, J. Wu, B. Song, and C. Wang, "A magnetic field sensor based on a dual S-tapered multimode fiber interferometer," Meas. Sci. Technol., Vol. 29, No. 7, 075103, Jul. 2018.
doi:10.1088/1361-6501/aac00e Google Scholar

7. Wang, F., K. Pang, T. Ma, X. Wang, and Y. Liu, "High-sensitivity and temperature-insensitive refractometer based on TNHF structure for low-range refractive index measurement," Progress In Electromagnetics Research, Vol. 166, 167-175, 2019.
doi:10.2528/PIER19102301 Google Scholar

8. Chen, W., Z. Chen, Y. Zhang, and H. Li, "Fiber sensor for relative humidity measurement at water absorption band of 2 μm," Meas. Sci. Technol., Vol. 31, No. 3, 035101, Dec. 2019.
doi:10.1088/1361-6501/ab55f3 Google Scholar

9. Wang, F., L. Zhang, X. Wang, T. Ma, K. Yu, and Y. Liu, "A high-sensitivity sensor based on tapered dispersion compensation fiber for curvature and temperature measurement," Opt. Commun., Vol. 481, 126534, Oct. 2020. Google Scholar

10. Zhao, Y., C. Cai, and X. Li, "Temperature-insensitive optical fiber curvature sensor based on SMF-MMF-TCSMFMMF-SMF structure," IEEE T. Instrum. Meas., Vol. 66, No. 1, 141-147, Jan. 2017.
doi:10.1109/TIM.2016.2615479 Google Scholar

11. Zhou, Y., Y. Wang, H. Liu, J. Chen, P. Yang, L. she, F. Chen, J. Shao, Z. Guan, and Z. Zhang, "High-sensitive bending sensor based on a seven-core fiber," Opt. Commun., Vol. 483, 126617, Mar. 2021.
doi:10.1016/j.optcom.2020.126617 Google Scholar

12. Dong, S., B. Dong, C. Yu, and Y. Guo, "High sensitivity optical fiber curvature sensor based on cascaded fiber interferometer," J. Lightwave Technol., Vol. 36, No. 4, 1125-1130, Feb. 2018.
doi:10.1109/JLT.2017.2771507 Google Scholar

13. Zhu, F., Y. Zhang, Y. Qu, W. Jiang, H. Su, Y. Guo, and K. Qi, "Stress-insensitive vector curvature sensor based on a single fiber Bragg grating," Opt. Fiber. Technol., Vol. 54, No. 102133, Jan. 2020. Google Scholar

14. Fu, X., J. Wen, Y. Zhang, D. Wang, F. Liu, H. Xie, G. Fu, and W. Bi, "Experimental and theoretical analysis of curvature sensor based on cladding mode resonance with triple cladding quartz specialty fiber," Opt. Commun., Vol. 429, 5-11, Dec. 2018.
doi:10.1016/j.optcom.2018.07.077 Google Scholar

15. Zhang, S., Y. Liu, H. Guo, A. Zhou, and L. Yuan, "Highly sensitive vector curvature sensor based on two juxtaposed fiber Michelson interferometers with Vernier-like effect," IEEE Sens. J., Vol. 19, No. 6, 2148-2154, Mar. 2019.
doi:10.1109/JSEN.2018.2884889 Google Scholar

16. Zhao, Y., A. Zhou, H. Guo, Z. Zheng, Y. Xu, C. Zhou, and L. Yuan, "An integrated fiber michelson interferometer based on twin-core and side-hole fibers for multiparameter sensing," J. Lightwave Technol., Vol. 36, No. 4, 993-997, Feb. 2018.
doi:10.1109/JLT.2017.2753256 Google Scholar

17. Ruan, J., "Fiber curvature sensor based on concave-heterotypic cascaded fiber Sagnac interferometer," Microw. Opt. Techn. Let., Vol. 62, No. 11, 3645-3649, Nov. 2020.
doi:10.1002/mop.32481 Google Scholar

18. Wang, S., W. Zhang, L. Chen, Y. Zhang, P. Geng, Y. Zhang, T. Yan, L. Yu, W. Hu, and Y. Li, "Two-dimensional micro bend sensor based on long-period fiber gratings in an isosceles triangle arrangement three-core fiber," Opt. Lett., Vol. 42, No. 23, 4938-4941, Dec. 2017.
doi:10.1364/OL.42.004938 Google Scholar

19. Oliveira, R., J. Osorio, S. Aristilde, L. Bilro, R. Nogueira, and C. Cordeiro, "Simultaneous measurement of strain, temperature and refractive index based on multimode interference, fiber tapering and fiber Bragg gratings," Meas. Sci. Technol., Vol. 27, No. 7, 075107, Jul. 2016.
doi:10.1088/0957-0233/27/7/075107 Google Scholar

20. Zhou, Y., W. Zhou, C. Chan, W. Wong, L. Shao, J. Cheng, and X. Dong, "Simultaneous measurement of curvature and temperature based on PCF-based interferometer and fiber Bragg grating," Opt. Commun., Vol. 284, No. 24, 5669-5672, Dec. 2011.
doi:10.1016/j.optcom.2011.08.048 Google Scholar

21. Wo, J., Q. Sun, X. Li, D. Liu, and P. Shum, "Biconical-taper-assisted fiber interferometer with modes coupling enhancement for high-sensitive curvature measurement," Appl. Phys. B - Lasers O., Vol. 115, No. 1, 1-8, Apr. 2014.
doi:10.1007/s00340-013-5565-4 Google Scholar

22. Sun, X., H. Du, X. Dong, Y. Hu, and J. Duan, "Simultaneous curvature and temperature sensing based on a novel Mach-Zehnder interferometer," Photonic Sens., Vol. 10, No. 2, 171-180, Jun. 2020.
doi:10.1007/s13320-019-0551-z Google Scholar

23. Gutiérrez Gutiérreza, J., J. Sierra-Hernandez, M, Vargas-Trevino, E. Lopez-Apreza, C. Romero-Salazar, O. Hernandez-Flores, J. Estudillo-Ayala, and R. Rojas-Laguna, "A curvature sensing setup based on an asymmetric concatenated tapered Mach-Zehnder interferometer," Opt. Laser Technol., Vol. 132, 106490, Dec. 2020.
doi:10.1016/j.optlastec.2020.106490 Google Scholar

24. Chen, E., B. Dong, Y. Li, X. Wang, Y. Zhao, W. Xu, W. Zhao, and Y. Wang, "Cascaded few-mode fiber down-taper modal interferometers and their application in curvature sensing," Opt. Commun., Vol. 475, 126274, Nov. 2020. Google Scholar

25. Cheng, H., S. Wu, Q. Wang, S. Wang, and P. Lu, "In-line hybrid fiber sensor for curvature and temperature measurement," IEEE Photon. J., Vol. 11, No. 6, 6803311, Dec. 2019.
doi:10.1109/JPHOT.2019.2944988 Google Scholar

26. Zhao, Y., L. Cai, and X. Li, "High sensitive modal interferometer for temperature and refractive index measurement," IEEE Photonic Tech. L., Vol. 27, No. 12, 1341-1344, Jun. 2015.
doi:10.1109/LPT.2015.2421349 Google Scholar

27. Yu, F., P. Xue, and J. Zheng, "Enhancement of refractive index sensitivity by bending a core-offset in-line fiber Mach-Zehnder interferometer," IEEE Sens J., Vol. 19, No. 9, 3328-3334, May 2019.
doi:10.1109/JSEN.2019.2892718 Google Scholar

28. Zhao, Y., M. Chen, F. Xia, L. Cai, and X. Li, "Small curvature sensor based on butterfly shaped Mach-Zehnder interferometer," IEEE T. Electron. Dev., Vol. 64, No. 11, 4644-4649, Nov. 2017.
doi:10.1109/TED.2017.2746087 Google Scholar

29. Zhang, Y., W. Zhang, Y. Zhang, S. Wang, L. Yu, and Y. Yan, "Simultaneous measurement of curvature and temperature based on LP11 mode Bragg grating in seven-core fiber," Meas. Sci. Technol., Vol. 28, No. 5, 055101, May 2017.
doi:10.1088/1361-6501/aa609f Google Scholar

30. Wang, Q. and Y. Liu, "Review of optical fiber bending/curvature sensor," Measurement, Vol. 130, 161-176, Dec. 2018.
doi:10.1016/j.measurement.2018.07.068 Google Scholar

31. Zheng, Y., X. Yang, W. Feng, and W. Fan, "Optical fiber refractive index sensor based on SMF-TCF-NCF-SMF interference structure," Optik, Vol. 226, 169500, Jan. 2021. Google Scholar

32. Lu, H., X. Wang, S. Zhang, F. Wang, and F. Liu, "A fiber-optic sensor based on no-core fiber and Faraday rotator mirror structure," Opt. Laser Technol., Vol. 101, 507-514, May 2018.
doi:10.1016/j.optlastec.2017.11.014 Google Scholar

33. Raji, Y. M., H. S. Lin, S. A. Ibrahim, M. R. Mokhtar, and Z. Yusoff, "Intensity-modulated abrupt tapered Fiber Mach-Zehnder Interferometer for the simultaneous sensing of temperature and curvature," Opt. Laser Technol., Vol. 86, 8-13, Dec. 2016.
doi:10.1016/j.optlastec.2016.06.006 Google Scholar

Dr. Fang Wang

Dr. Yinghui Lu

Professor Yufang Liu