TY - JOUR
T1 - Femtosecond-Laser-Based Inscription Technique for Post-Fiber-Bragg Grating Inscription in an Extrinsic Fabry-Perot Interferometer Pressure Sensor
AU - Poeggel, Sven
AU - Duraibabu, Dineshbabu
AU - Lacraz, Amedee
AU - Kalli, Kyriacos
AU - Tosi, Daniele
AU - Leen, Gabriel
AU - Lewis, Elfed
N1 - Funding Information:
Manuscript received January 29, 2015; revised March 31, 2015; accepted May 8, 2015. Date of publication May 18, 2015; date of current version April 8, 2016. This work was supported in part by COST Action TD1001 (ECOST-STSMTD1001-090414-043788), in part by Novel and Reliable Optical Fiber Sensor Systems for Future Security and Safety Applications (OFSeSa), in part by the Science Foundation Ireland (10/RFP/ECE2898), in part by the Irish Research Council (EPSPG/2011/343), and in part by Marie Curie action (MC-IEF-299985). This paper was presented at the IEEE SENSORS 2014 Conference. The associate editor coordinating the review of this paper and approving it for publication was Dr. Andrea Cusano.
PY - 2016/5/15
Y1 - 2016/5/15
N2 - In this paper, a novel fiber Bragg grating inscription technique based on a femtosecond laser is presented. The grating was inscribed in close proximity to the tip of an extrinsic Fabry-Perot interferometer (EFPI)-based optical fiber pressure sensor. This therefore represents an optical fiber pressure and temperature sensor (OFPTS) for simultaneous pressure and temperature measurement for use in exactly the same physical location. The temperature measurement can also be used to compensate thermal drift in the EFPI sensor. The Bragg wavelength can be tailored precisely to any given wavelength in the optical spectrum and the degree of reflection can be adjusted to suit the FPI spectrum. The OFPTS has a diameter of 200 $\mu \text{m}$ and is fully biocompatible. Furthermore, the sensor shows a high stability after grating inscription, of better than 0.5% in 20 min. The small size and high stability makes the sensor especially interesting for volume restricted areas, like blood vessels or the brain.
AB - In this paper, a novel fiber Bragg grating inscription technique based on a femtosecond laser is presented. The grating was inscribed in close proximity to the tip of an extrinsic Fabry-Perot interferometer (EFPI)-based optical fiber pressure sensor. This therefore represents an optical fiber pressure and temperature sensor (OFPTS) for simultaneous pressure and temperature measurement for use in exactly the same physical location. The temperature measurement can also be used to compensate thermal drift in the EFPI sensor. The Bragg wavelength can be tailored precisely to any given wavelength in the optical spectrum and the degree of reflection can be adjusted to suit the FPI spectrum. The OFPTS has a diameter of 200 $\mu \text{m}$ and is fully biocompatible. Furthermore, the sensor shows a high stability after grating inscription, of better than 0.5% in 20 min. The small size and high stability makes the sensor especially interesting for volume restricted areas, like blood vessels or the brain.
KW - Fabry Perot interferometer
KW - Femtosecond laser
KW - Fibre Bragg grating
KW - OFPTS
KW - Optical fibre sensor
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U2 - 10.1109/JSEN.2015.2434772
DO - 10.1109/JSEN.2015.2434772
M3 - Article
AN - SCOPUS:84963930663
VL - 16
SP - 3396
EP - 3402
JO - IEEE Sensors Journal
JF - IEEE Sensors Journal
SN - 1530-437X
IS - 10
M1 - 7109831
ER -