Abstract
The sensing characteristics of surrounding refractive index (SRI) were investigated on the pretreated FBG (PFBG) by hydrofluoric acid (HF) etching treatment and the tilted fiber Bragg grating (TFBG) with an angle of 4° through several experiments, in which the SRI ranges from 1.40 to 1.45. The results demonstrated that the SRI sensing characteristic of TFBG was superior to that of PFBG. Using width changed (ΔL) of high-order modes of TFBG , we can detect SRI whose value ranges from 1.40 to 1.45, between which a good linearity of SRI sensing characteristic can be obtained, and the correlative coefficient can reach 99.543%. The features of TFBG may possess prospects of application in biological and chemical fields.
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Shen, R., Lin, W., Li, X., Zhang, X., Du, G. (2013). Study on the SRI Sensing Characteristics of PFBG and TFBG. In: Du, Z. (eds) Intelligence Computation and Evolutionary Computation. Advances in Intelligent Systems and Computing, vol 180. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-31656-2_38
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DOI: https://doi.org/10.1007/978-3-642-31656-2_38
Publisher Name: Springer, Berlin, Heidelberg
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