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Temperature and transverse load sensing characteristics of twisted long period fiber gratings (T-LPFGs) written by femtosecond laser have been experimentally investigated. The temperature sensitivity of the proposed T-LPFGs reaches 65.31pm/°C with a linearity of 0.992 within the temperature range from 20°C to 300°C, and the coincidence of temperature increase and decrease is good enough. The transverse...
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