Carbon-steel tube surface mounted FBG sensors under high-temperature environment, part II: Gold coated and femtosecond laser written

Carbon-steel tube surface mounted FBG sensors under high-temperature environment, part II: Gold coated and femtosecond laser written
Title:
Carbon-steel tube surface mounted FBG sensors under high-temperature environment, part II: Gold coated and femtosecond laser written
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Optoelectronics Global Conference (OGC)
Publication Date:
11 September 2020
Citation:
Abstract:
Fiber Bragg grating (FBG) sensors must be mounted at the outer surface of a metallic test-piece or em-bedded into a testing surface to be able to perform continuous condition monitoring. Robust mounting and reliable operation of such sensors for parameter monitoring in high-temperature operating environment is still a key challenge. Here, in the second part of the two-part article, we focus on the mounting of gold-coated femtosecond laser written FBG sensors on a carbon-steel tube and performance monitoring of the packaged sensors for temperature up to 500◦C, for three consecutive thermal cycles. The sensors experience a remarkable sensitivity to temperature, 28 pm/◦C.
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Funding Info:
National Research Foundation (NRF) Singapore, Energy Innovation Research Programme, under its Sembcorp-EMA Energy Technology Partnership (SEETP) (Singapore, LA/ Contract No: NRF2015EWT-EIRP001-010). Ministry of Education Singapore, Academic Research Fund Tier 1 (MOE2019-T1-001-111)
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