Microsphere-Augmented PDMS integration in tapered FBG small-scale sensors for enhanced temperature sensitivity.

ABSTRACT: This work presents a novel high-sensitivity temperature sensor based on a fiber Bragg grating inscribed on a tapered optical fiber which terminates in a microsphere, all embedded within a PDMS-filled silica capillary. The fabricated microsphere at the taper's end enhances PDMS traction, improving strain transfer between the polymer and the fiber during temperature changes. Different waist diameters for the tapered fiber were considered for the design of the sensor. The sensor's response was analyzed over a temperature range of 20 °C to 90 °C for taper waist diameters ranging from 60 μm to 20 μm. Experimental results demonstrate a wavelength temperature sensitivity of 47.19 pm °C⁻¹ for a 60 μm waist diameter and 221.2 pm °C⁻¹ for a 20 μm waist diameter, achieving up to

SUBMITTER: Sanipatin B 

PROVIDER: S-EPMC11599582 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature