Research on the Refractive-Index Gradient Sensor Based on Gaussian Apodized Fiber Bragg Grating under Uneven Medium

Abstract:

Based on the fiber waveguide theory and the transfer matrix method,Research on the reflection spectrum of Gaussian apodized FBG which cladding were completely corroded under uneven medium.During the stimulation process,consider high refractive-index(1.43-1.45) area and low refravtive area(1.33-1.36) respectively.At the same time,suppose the uneven SRI in different linear function distributions.The stimulation result shows the Gussian apodized FBG’s spectrum bandwidth,spectrum intensity depends on the SRI along the grating axial linear distribution gradient.As SRI gradient increases,the gradient sensitivity of high refractive index area and low refractive index area are nm.mm/riu and nm.mm/riu respectively.The results have a definite significance of Gaussian apodized FBG for sensing technology used in biochemical of uneven medium measurement.

• Periodical: Applied Mechanics and Materials (Volumes 303-306)
• Pages: 86-91
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.303-306.86
• Online since: February 2013
• Authors: Ming Fu Zhao, Ying Wang, Bin Bin Luo
• Keywords: Gaussian Apodized Fiber Bragg Grating, Refractive Index Gradient Sensor, Surrounding Refractive Index, Transfer Matrix Method (TMM)

References

[1] D. Marazuela and M. D. Moreno-Bondi. Fiber-optic biosensors–an overview [J]. Anal. Bioanal. Chem., 372: 664-682.

DOI: 10.1007/s00216-002-1235-9

[2] Bennion, I. Zhang, L. Fiber Bragg grating technologies and applications in sensors [C]. Optical Fiber Communication Conference on 5-10 March 2006, p.3.

DOI: 10.1109/ofc.2006.215966

[3] Kaiming Zhou, Xianfeng Chen et al. Implementation of optical chemsensors based on HF-etched fibre Bragg grating structures [J]. Meas. Sci. Technol., 17: 1140-1145.

DOI: 10.1088/0957-0233/17/5/s34

[4] Chun-Liu Zhao, Xiu-feng Yang, M. S. Demokan et al. Simultaneous temperature and refractive index measurements using a 3◦ slanted multimode fiber Bragg grating [J]. J. Lightwave Technol., 24(2): 879-883.

DOI: 10.1109/jlt.2005.862471

[5] D. W. Kim, Y. Zhang, K. L. Cooper and A. Wang. Fibre-optic interferometricimmuno-sensor using long period grating [J]. Electronics Letters, 42(6): 324-325.

DOI: 10.1049/el:20060040

[6] Bin-bin Luo, Xiao-jun Zhou, Ming-fu Zhao et al. Recent developments in microstructured fiber Bragg grating refractive index sensors [J]. 2010 Society of Photo-Optical Instrumentation Engineers, SPIE Reviews, 1: 018002-1~018002-12.

DOI: 10.1117/6.0000002

[7] D. A. Pereira, O. Frazao, and J. L. Santos. Fiber Bragg grating sensing system for simultaneous measurement of salinity and temperature [J]. Opt. Eng., 43, (2), 299–304.

DOI: 10.1117/1.1637903

[8] Kerstin Schroeder, Wolfgang Ecke, Rudolf Mueller et al. A fibre Bragg grating refractometer [J]. Measurement Science and technology, 12, 757–764.

DOI: 10.1088/0957-0233/12/7/301

[9] Na Chen, Binfeng Yun, Yiping Wang, and Yiping Cui. Theoretical and experimental study on etched fiber Bragg grating cladding mode resonances for ambient refractive index sensing [J]. J. Opt. Soc. Am. B, 24(3): 439-445.

DOI: 10.1364/josab.24.000439

[10] M. Dagenais, A. N. Chryssis, et al. High sensitivity bio-sensor based on an etched core fiber Bragg grating [J]. OSA Conf. Integrated Photon. Res. Appl. 4, IWD3.

DOI: 10.1364/ipra.2005.iwd3

[11] Sang-Mae Lee, Myung-Yung Jeong, and Simarjeet Singh Saini. Etched Core Fiber Bragg Grating Sensor Integrated with Microfluidic Channel [C]. 21st International Conference on Optical Fiber Sensors, Proc. of SPIE, 7753: 77530G-1~-4.

DOI: 10.1117/12.886164