We propose and experimentally demonstrate an in-line microfluidic sensor based on a dual S-taper multimode fiber interferometer (MFI) for glucose sensing. The dual S-taper MFI was fabricated by splicing two S-shaped fiber tapers with a commercially available fusion splicer. To realize in-line microfluidic sensing, the sensor was encapsulated into a capillary with the inlet and outlet to pump in and out the glucose sample solution using a syringe. Fourier frequency spectra of the transmission spectra under air and deionized water environments showed that multiple high-order modes simultaneously participated in the modal interference process. Experimental results indicated that the interference dip wavelength sensitivity reached 0.276 nm / ( g / dL ) for the glucose concentration ranging from 0 to 25.0 g / dL. Our proposed glucose sensor has several advantages such as a compact structure, ease of fabrication, and low cost, which make it a promising candidate for in-line glucose sensing and other microfluidic sensing applications.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.