Fabrication and Interrogation of Refractive Index Biosensors Based on Etched Fiber Bragg Grating (EFBG)

Aliya Bekmurzayeva; Madina Shaimerdenova; Daniele Tosi

doi:10.1109/EMBC.2018.8513240

Fabrication and Interrogation of Refractive Index Biosensors Based on Etched Fiber Bragg Grating (EFBG)

Aliya Bekmurzayeva, Madina Shaimerdenova, Daniele Tosi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

We discuss the fabrication and interrogation of a fiber-optic refractive index sensors based on wet-etched fiber Bragg grating (EFBG). The fabrication is based on chemical etching of an FBG through an HF-free etching solution (ammonium fluoride and sulfuric acid), which progressively depletes the fiber cladding exposing the core to the outer medium. Microscope inspection of the fiber and real-time detection of the Bragg wavelength allow controlling the sensitivity. The proposed interrogation method is based on a spline interpolation, that measures the change of Bragg wavelength when the FBG is exposed to variations of the refractive index in the surrounding medium. An experimental validation has been carried out, for small refractive index variations (up to 1.85× 10-3 RIU), in order to verify the progressive change of sensitivity through fiber etching. The proposed EFBG sensing unit is a building block for functionalized fiber optic biosensors.

Original language	English
Title of host publication	40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	4289-4292
Number of pages	4
Volume	2018-July
ISBN (Electronic)	9781538636466
DOIs	https://doi.org/10.1109/EMBC.2018.8513240
Publication status	Published - Oct 26 2018
Event	40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018 - Honolulu, United States Duration: Jul 18 2018 → Jul 21 2018

Other

Other	40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018
Country	United States
City	Honolulu
Period	7/18/18 → 7/21/18

ASJC Scopus subject areas

Signal Processing
Biomedical Engineering
Computer Vision and Pattern Recognition
Health Informatics

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Bekmurzayeva, A., Shaimerdenova, M., & Tosi, D. (2018). Fabrication and Interrogation of Refractive Index Biosensors Based on Etched Fiber Bragg Grating (EFBG). In 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018 (Vol. 2018-July, pp. 4289-4292). [8513240] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EMBC.2018.8513240

Fabrication and Interrogation of Refractive Index Biosensors Based on Etched Fiber Bragg Grating (EFBG). / Bekmurzayeva, Aliya; Shaimerdenova, Madina ; Tosi, Daniele.

40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018. Vol. 2018-July Institute of Electrical and Electronics Engineers Inc., 2018. p. 4289-4292 8513240.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Bekmurzayeva, A, Shaimerdenova, M & Tosi, D 2018, Fabrication and Interrogation of Refractive Index Biosensors Based on Etched Fiber Bragg Grating (EFBG). in 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018. vol. 2018-July, 8513240, Institute of Electrical and Electronics Engineers Inc., pp. 4289-4292, 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018, Honolulu, United States, 7/18/18. https://doi.org/10.1109/EMBC.2018.8513240

Bekmurzayeva A, Shaimerdenova M , Tosi D. Fabrication and Interrogation of Refractive Index Biosensors Based on Etched Fiber Bragg Grating (EFBG). In 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2018. Vol. 2018-July. Institute of Electrical and Electronics Engineers Inc. 2018. p. 4289-4292. 8513240 https://doi.org/10.1109/EMBC.2018.8513240

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