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https://hdl.handle.net/20.500.14279/9510
Τίτλος: | Recent improvement of medical optical fibre pressure and temperature sensors |
Συγγραφείς: | Poeggel, Sven Duraibabu, Dineshbabu Kalli, Kyriacos Leen, Gabriel Dooly, Gerard Lewis, Elfed Kelly, Jimmy Munroe, Maria |
Major Field of Science: | Engineering and Technology |
Field Category: | Electrical Engineering - Electronic Engineering - Information Engineering |
Λέξεις-κλειδιά: | Fabry–Perot interferometer;Optical fibre sensors;Pressure sensors |
Ημερομηνία Έκδοσης: | 13-Ιου-2015 |
Πηγή: | Biosensors, 2015, vol. 5, no. 3, pp. 432-449 |
Volume: | 5 |
Issue: | 3 |
Start page: | 432 |
End page: | 449 |
DOI: | 10.3390/bios5030432 |
Περιοδικό: | Biosensors |
Περίληψη: | This investigation describes a detailed analysis of the fabrication and testing of optical fibre pressure and temperature sensors (OFPTS). The optical sensor of this research is based on an extrinsic Fabry-Perot interferometer (EFPI) with integrated fibre Bragg grating (FBG) for simultaneous pressure and temperature measurements. The sensor is fabricated exclusively in glass and with a small diameter of 0.2 mm, making it suitable for volume-restricted bio-medical applications. Diaphragm shrinking techniques based on polishing, hydrofluoric (HF) acid and femtosecond (FS) laser micro-machining are described and analysed. The presented sensors were examined carefully and demonstrated a pressure sensitivity in the range of sp = 2-10 nm/kPa and a resolution of better than ΔP = 10 Pa (0.1 cm H2O). A static pressure test in 38 cm H2O shows no drift of the sensor in a six-day period. Additionally, a dynamic pressure analysis demonstrated that the OFPTS never exceeded a drift of more than 130 Pa (1.3 cm H2O) in a 12-h measurement, carried out in a cardiovascular simulator. The temperature sensitivity is given by k = 10:7 pm/K, which results in a temperature resolution of better than ΔT = 0.1 K. Since the temperature sensing element is placed close to the pressure sensing element, the pressure sensor is insensitive to temperature changes. |
URI: | https://hdl.handle.net/20.500.14279/9510 |
ISSN: | 0265928X |
DOI: | 10.3390/bios5030432 |
Rights: | © MDPI AG |
Type: | Article |
Affiliation: | University of Limerick Cyprus University of Technology |
Publication Type: | Peer Reviewed |
Εμφανίζεται στις συλλογές: | Άρθρα/Articles |
Αρχεία σε αυτό το τεκμήριο:
Αρχείο | Περιγραφή | Μέγεθος | Μορφότυπος | |
---|---|---|---|---|
Kalli.pdf | Article | 3.74 MB | Adobe PDF | Δείτε/ Ανοίξτε |
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