Application of a WGM optical fiber probe fabricated by 3D printing technology for glucose concentration measurement

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• 作者：Chao-Wei Wu ; Chun-You Kuo ; Jing-Wei Lin…
• 关键词：Whispering gallery mode ; Optical fiber probe ; Glucose concentration ; 3D printing technology
• 刊名：Optical and Quantum Electronics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：49
• 期：1
• 全文大小：
• 刊物主题：Optics, Lasers, Photonics, Optical Devices; Electrical Engineering; Characterization and Evaluation of Materials; Computer Communication Networks;
• 出版者：Springer US
• ISSN：1572-817X
• 卷排序：49

文摘

This study proposes a method for manufacturing a whispering gallery mode (WGM) optical fiber probe used for measuring glucose. The principle of the WGM optical fiber probe consists of the bending interference that occurs between the core mode and cladding mode. 3D printing technology was used to create a mold for the optical fiber sensor so that the bent optical fiber sensor was fixed within the mold to ensure a stable bend radius. This method of fabrication allows for easier installation and replacement of the resulting optical fiber compared to WGM optical fiber sensors fabricated by traditional methods. The results of the concentration test showed that as the glucose aqueous solution concentration increased from 0 to 10%, the wavelength was red shifted and the transmission loss gradually increased. At a bend radius of 3.1 mm and an etching diameter of 46 μm, the wavelength sensitivity was 1.475 nm/% and the R-squared value was 0.983, indicating an extremely high sensitivity. These results confirm that the WGM optical fiber probe created in this study can be used to measure glucose concentrations with high sensitivity, and that it is relatively easy to manufacture, install, and replace. Therefore, the proposed WGM optical fiber probe exhibits good performance and is suitable for use as a glucose concentration sensor.