Characterization of miniature fiber-optic Fabry-Perot interferometric sensors based on hollow silica tube

Abstract

A miniature fiber-optic Fabry-Perot interferometer (MOFPI) fabricated by splicing a hollow silica tube (HST) with inner diameter of 4 µm to the end of a single-mode fiber is investigated and experimentally demonstrated. The theoretical relationship between the free spectrum range and the length of HST is verified by fabricating several MOFPIs with different lengths. We characterize the MOFPIs for temperature, liquid refractive index, and strain. Experimental results show that the sensitivities of the temperature, liquid refractive index, and strain are 16.42 pm/°C,–118.56 dB/RIU, and 1.21 pm/µε, respectively.

Keywords

Fiber-optic / Fabry-Perot interferometer / hollow silica tube / characterization

References

[1] Talataisong W., Wang D. N., Chitaree R., Liao C. R., Wan C.. Fiber in-line Mach-Zehnder interferometer based on an inner air-cavity for high-pressure sensing. Optics Letters, 2015, 40(7): 1220-1222.

[2] Sun B., Huang Y. J., Liu S., Wang C., He J., Liao C. R., . Asymmetrical in-fiber Mach-Zehnder interferometer for curvature measurement. Optics Express, 2015, 23(11): 14596-14602.

[3] Yuan L. B., Yang J., Liu Z. H., Sun J. X.. In-fiber integrated Michelson interferometer. Optics Letters, 2016, 31(18): 2692-2694.

[4] Zhou A., Li G. P., Zhang Y. H., Wang Y. Z., Guan C. Y., Yang J., . Asymmetrical Twin-core fiber based Michelson interferometer for refractive index sensing. Journal of Lightwave Technology, 2011, 29(19): 2985-2991.

[5] Pevec S., Donlagic D.. All-fiber, long-active-length Fabry-Perot strain sensor. Optics Express, 2011, 19(16): 15641-15651.

[6] Favero F. C., Bouwmans G., Finazzi V., Villatoro J., Pruneri V.. Fabry-Perot interferometers built by photonic crystal fiber pressurization during fusion splicing. Optics Letters, 2011, 36(21): 4191-4193.

[7] Ferreira M. S., Bierlich J., Kobelke J., Schuster K., Santos J. L., Frazão O.. Towards the control of highly sensitive Fabry-Pérot strain sensor based on hollow-core ring photonic crystal fiber. Optics Express, 2012, 20(20): 21946-21952.

[8] Zou X. T., Chao A., Tian Y., Wu N., Zhang H. T., Yu T. Y., . An experimental study on the concrete hydration process using Fabry-Perot fiber optic temperature sensors. Measurement, 2012, 45(5): 1077-1082.

[9] Tafulo P. A. R., Jorge P. A. S., Santos J. L., Frazão O.. Fabry-Pérot cavities based on chemical etching for high temperature and strain measurement. Optics Communications, 2012, 285(6): 1159-1162.

[10] Liu S., Wang Y. P., Liao C. G., Wang G. J., Li Z. Y., Wang Q., . High-sensitivity strain sensor based on in-fiber improved Fabry-Perot interferometer. Optics Letters, 2014, 39(7): 2121-2124.

[11] Duan D. W., Rao Y. J., Hou Y. S., Zhu T.. Microbubble based fiber-optic Fabry-Perot interferometer formed by fusion splicing single-mode fibers for strain measurement. Applied Optics, 2012, 51(8): 1033-1036.

[12] Liu Y., Qu S. L.. Optical fiber Fabry-Perot interferometer cavity fabricated by femtosecond laser-induced water breakdown for refractive index sensing. Applied Optics, 2014, 53(3): 469-474.

[13] Wang T. T., Wang M.. Fabry-Pérot fiber sensor for simultaneous measurement of refractive index and temperature based on an in-fiber ellipsoidal cavity. IEEE Photonics Technology Letters, 2012, 24(19): 1733-1736.

[14] Gao S. C., Zhang W. G., Bai Z. Y., Zhang H., Lin W., Wang L., . Microfiber-enabled in-line Fabry-Perot interferometer for high-sensitive force and refractive index sensing. Journal of Lightwave Technology, 2014, 32(9): 1682-1688.

[15] Fang G. C., Jia P. G., Liang T., Tan Q. L., Hong Y. P., Liu W. Y., . Diaphragm-free fiber-optic Fabry-Perot interferometer based on tapered hollow silica tube. Optics Communications, 2016, 371, 201-205.

[16] Mitchell K., Ebel W. J., Watkins S. E.. Low-power hardware implementation of artificial neural network strain detection for extrinsic Fabry-Pérot interferometric sensors under sinusoidal excitation. Optical Engineering, 2011, 6(4): 495-501.

[17] Wang D. H., Wang S. J., Jia P. G.. In-line silica capillary tube all-silica fiber-optic Fabry-Perot interferometric sensor for detecting high intensity focused ultrasound fields. Optics Letters, 2012, 37(11): 2046-2048.

[18] Sun M., Xu B., Dong X. Y., Li Y.. Optical fiber strain and temperature sensor based on an in-line Mach–Zehnder interferometer using thin-core fiber. Optics Communications, 2012, 285(18): 3721-3725.

[19] Huang Z., Chen X., Zhu Y., Wang A.. Wavefront splitting intrinsic Fabry-Perot fiber optic sensor. Optical Engineering, 2005, 44(7): 1-3.

[20] Chen N., Lu K., Shy J., Lin C.. Broadband Micro-Michelson interferometer with multi-optical-path beating using a sphered-end hollow fiber. Optics Letters, 2011, 36(11): 2074-2076.

[21] Ferreira M. S., Coelho L., Schuster K., Kobelke J., Santos J. L., Frazao O.. Fabry-Perot cavity based on a diaphragm-free hollow-core silica tube. Optics Letters, 2011, 36(20): 4029-4031.

[22] Wang R. H., Qiao X. G.. Intrinsic Fabry-Pérot interferometer based on concave well on fiber end. IEEE Photonics Technology Letters, 2014, 26(14): 1430-1433.

[23] Mathew J., Schneller O., Polyzos D., Havermann D., Carter R., MacPherson W., . In-fiber Fabry–Perot cavity sensor for high-temperature applications. Journal of Lightwave Technology, 2015, 33(12): 2419-2425.