Polymer-based cascaded waveguide Bragg grating for blood glucose sensing
Publication Name
Optics Letters
Abstract
Waveguide Bragg grating (WBG) blood glucose sensing, as a biological sensing technology with broad application prospects, plays an important role in the fields of health management and medical treatment. In this work, a polymer-based cascaded WBG is applied to glucose detection. We investigated photonic devices with two different grating structures cascaded—a crossed grating and a bilateral grating—and analyzed the effects of the crossed grating period, bilateral grating period, and number of grating periods on the sensing performance of the glucose sensor. Finally, the spectral reflectance characteristics, response time, and sensing specificity of the cascaded WBG were evaluated. The experimental results showed that the glucose sensor has a sensitivity of 175 nm/RIU in a glucose concentration range of 0–2 mg/ml and has the advantages of high integration, a narrow bandwidth, and low cost. © 2024 Optica Publishing Group
Open Access Status
This publication is not available as open access
Volume
49
Issue
10
First Page
2821
Last Page
2824
Funding Number
61711530652
Funding Sponsor
National Natural Science Foundation of China