References

Kumar, J., R. Mahakud, O. Prakash and S.K. Dixit, 2014. HF-based clad etching of fibre Bragg grating and its utilization in concentration sensing of laser dye in dye-ethanol solution. Pramana, 82: 265-269.
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Park, C.S., K.I. Joo, S.W. Kang and H.R. Kim, 2011. A PDMS-oated optical fiber Bragg grating sensor for enhancing temperature sensitivity. J. Opt. Soc. Korea, 15: 329-334.
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Raikar, U.S., V.K. Kulkarni, A.S. Lalasangi, K. Madhav and S. Asokan, 2007. Etched fiber Bragg grating as ethanol solution concentration sensor. Optoelectron. Adv. Mater., 1: 149-151.

Wu, Z., X. Yu, E. Gu, Z. Kong and W. Li, 2013. Characteristics analysis of chemical concentration sensor based on three-layer FBG. Opt. Photonics J., 3: 268-271.
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