NDLI: An MR-compatible force sensor based on FBG technology for biomedical application

Content Provider	IEEE Xplore Digital Library
Author	Saccomandi, P. Caponero, M.A. Polimadei, A. Francomano, M. Formica, D. Accoto, D. Tamilia, E. Taffoni, F. Di Pino, G. Schena, E.
Copyright Year	2014
Description	Author affiliation: Photonics Micro- & Nano-Struct. Lab., ENEA, Frascati, Italy (Caponero, M.A.; Polimadei, A.) \|\| Center for Integrated Res., Univ. Campus Bio-Medico di Roma, Rome, Italy (Saccomandi, P.; Francomano, M.; Formica, D.; Accoto, D.; Tamilia, E.; Taffoni, F.; Di Pino, G.; Schena, E.)
Abstract	Fiber Bragg Grating (FBG) technology is very attractive to develop sensors for the measurement of thermal and mechanical parameters in biological applications, particularly in presence of electromagnetic interferences. This work presents the design, working principle and experimental characterization of a force sensor based on two FBGs, with the feature of being compatible with Magnetic Resonance. Two prototypes based on different designs are considered and characterized: 1) the fiber with the FBGs is encapsulated in a polydimethylsiloxane (PDMS) sheet; 2) the fiber with the FBGs is free without the employment of any polymeric layer. Results show that the prototype which adopts the polymeric sheet has a wider range of measurement (4200 mN vs 250 mN) and good linearity; although it has lower sensitivity (≈0.1 $nm-N^{1}$ vs 7 $nm-N^{1}).$ The sensor without polymeric layer is also characterized by employing a differential configuration which allows neglecting the influence of temperature. This solution improves the linearity of the sensor, on the other hand the sensitivity decreases. The resulting good metrological properties of the prototypes here tested make them attractive for the intended application and in general for force measurement during biomedical applications in presence of electromagnetic interferences.
Sponsorship	IEEE Eng. Med. Biol. Soc.
Starting Page	5731
Ending Page	5734
File Size	821851
Page Count	4
File Format	PDF
ISBN	9781424479290
ISSN	1557170X
DOI	10.1109/EMBC.2014.6944929
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-08-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical fiber sensors Fiber gratings Force Optical fibers Temperature sensors
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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