Document Type
Article
Date of Original Version
3-5-2015
Abstract
This letter reports a fiber Bragg grating for distributed sensing applications fabricated using single-mode optical fiber and a femtosecond laser and interrogated in the terahertz range. A theoretical model of device behavior was derived, which agreed well with experimentally observed device behavior. In order to investigate the utility of terahertz fiber Bragg gratings (THz FBGs) as a sensing modality, temperature tests were conducted. The results demonstrated a sensitivity of -1.32 GHz/ºC and a detection resolution of less than 0.0017 ºC. A temperature distribution test was also conducted using a THz FBG, demonstrating its potential as a distributed sensing platform with high spatial resolution. The feasibility of interrogating THz FBGs using narrow interrogation bandwidths was also experimentally shown.
Citation/Publisher Attribution
Chen Z, Yuan L, Hefferman G, and Wei, T. (2015). THz fiber Bragg grating for distributed sensing. Photonics Technology Letters, IEEE, 27(10), 1084-1087. doi 10.1109/LPT.2015.2407580
Available at: http://dx.doi.org/10.1109/LPT.2015.2407580
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