Fabrication and characterization of polymer optical waveguide Bragg grating for pulse signal sensing
Publication Name
Optics Express
Abstract
Polymer materials have the advantages of a low Young’s modulus and low-cost preparation process. In this paper, a polymer-based optical waveguide pressure sensor based on a Bragg structure is proposed. The change in the Bragg wavelength in the output spectrum of the waveguide Bragg grating (WBG) is used to linearly characterize the change in pressure acting on the device. The polymer-based WBG was developed through a polymer film preparation process, and the experimental results show that the output signal of the device has a sensitivity of 1.275 nm/kPa with a measurement range of 0-12 kPa and an accuracy of 1 kPa. The experimental results indicate that the device already perfectly responds to a pulse signal. It has significant potential application value in medical diagnostics and health testing, such as blood pressure monitoring, sleep quality monitoring, and tactile sensing.
Open Access Status
This publication may be available as open access
Volume
31
Issue
20
First Page
32458
Last Page
32467
Funding Number
KXYJS2022091
Funding Sponsor
National Natural Science Foundation of China