Enhancing Temperature Sensitivity Using Cyclic Polybutylene Terephthalate- (c-PBT-) Coated Fiber Bragg Grating

Table 1

Comparison of coated FBG temperature sensors with sensitivity and temperature range.

Type of coating	Sensitivity	Temperature range tested
PDMS coated [24]	0.042 nm/°C (with a cross section of 400 mm^2)	30°C–120°C
Nickel coated [25]	0.025nm/°C (with a thickness of 337.5 μm)	20°C–300°C
Polymer-coated fiber Bragg grating [28]	0.048 nm/°C	25°C–180°C
This work	0.11 nm/°C	30°C–85°C