High sensitivity refractive index sensor based on tilted fiber Bragg gratings
Received date: 2015-12-21
Online published: 2017-12-30
We demonstrate fabrication of tilted fiber Bragg gratings (TFBGs) with different tilt angles for the measurement of surrounding refractive index (SRI). High order
cladding modes has been found to disappear gradually, with their resonance wavelength linearly increasing as SRI increases. The measured index sensitivity is higher than 500 nm/RIU. By optimizing the tilt angle of the grating, the proposed optical fiber sensor can be used for SRI measurements in different index range.
SHI Lei, LIU Yunqi, SONG Hongliang, ZOU Fang, WANG Tingyun . High sensitivity refractive index sensor based on tilted fiber Bragg gratings[J]. Journal of Shanghai University, 2017 , 23(6) : 859 . DOI: 10.12066/j.issn.1007-2861.1763
[1] Albert J, Shao L Y, Caucheteur C. Tilted fiber Bragg grating sensors [J]. Laser & Photonics Reviews, 2013, 7(1): 83-108.
[2] Laffont G, Ferdinand P. Tilted short-period fibre-Bragg-grating-induced coupling to cladding modes for accurate refractometry [J]. Measurement Science and Technology, 2001, 12(7): 765-770.
[3] Miao Y P, Liu B, Zhao Q D. Refractive index sensor based on measuring the transmission power of tilted fiber Bragg grating [J]. Optical Fiber Technology, 2009, 15(3): 233-236.
[4] Zhang X P, Peng W, Liu Y, et al. Core-cladding mode recoupling based fiber optic refractive index sensor [J]. Optics Communications, 2013, 294(5): 188-191.
[5] Zheng J, Dong X Y, Ji J H, et al. Power-referenced refractometer with tilted fiber Bragg grating cascaded by chirped grating [J]. Optics Communications, 2014, 312(4): 106-109.
[6] Dong L, Ortega B, Reekie L. Coupling characteristics of cladding modes in tilted optical fiber Bragg gratings [J]. Applied Optics, 1998, 37(22): 5099-5105.
[7] Shevchenko Y Y, Albert J. Plasmon resonances in gold-coated tilted fiber Bragg gratings [J]. Optics Letters, 2007, 32(3): 211-213.
[8] Iadicicco A, Cusano A, Campopiano S, et al. Thinned fiber Bragg gratings as refractive index sensors [J]. IEEE Sensors Journal, 2005, 5(6): 1288-1295.
[9] Jiang Q, Hu D B, Yang M. Simultaneous measurement of liquid level and surrounding refractive index using tilted fiber Bragg grating [J]. Sensors and Actuators A: Physical, 2011, 170(1/2): 62-65.
[10] Guo T, Tam H Y, Krug P A, et al. Reflective tilted fiber Bragg grating refractometer based on strong cladding to core recoupling [J]. Optics Express, 2009, 17(7): 5736-5742.
[11] Dong X Y, Zhang H, Liu B, et al. Tilted fiber Bragg gratings: principle and sensing applications [J]. Photonic Sensors, 2011, 1(1): 6-30.
[12] Khaliq S, James S W, Tatam R P. Fiber-optic liquid-level sensor using a long-period grating [J]. Optics Letters, 2001, 26(16): 1224-1226.
[13] Zhou B, Zhang P, He S L, et al. Cladding-mode-recoupling-based tilted fiber Bragg grating sensor with a core-diameter-mismatched fiber section [J]. IEEE Photonics Journal, 2010, 2(2): 152-157.
/
| 〈 |
|
〉 |
