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Optical Fiber Sensing Based on Reflection Laser Spectroscopy
Consiglio Nazionale delle Ricerche, Istituto Nazionale di Ottica (INO), Via Campi Flegrei, 34 I-80078 Napoli, Italy
Engineering Photonics Group, School of Engineering, Cranfield University, Bedford MK43 OAL, UK
Central Glass & Ceramic Research Institute (CSIR), 196, Raja S.C.Mullick Road, Kolkata-700 032, India
Department of Chemistry, Queen’s University, Kingston, ON, K7L 3N6, Canada
Centre for Gravitational Physics, Research School of Physics and Engineering, Australian National University, Canberra, ACT 0200, Australia
* Author to whom correspondence should be addressed.
Received: 5 January 2010; in revised form: 3 February 2010 / Accepted: 5 February 2010 / Published: 5 March 2010
Abstract: An overview on high-resolution and fast interrogation of optical-fiber sensors relying on laser reflection spectroscopy is given. Fiber Bragg-gratings (FBGs) and FBG resonators built in fibers of different types are used for strain, temperature and acceleration measurements using heterodyne-detection and optical frequency-locking techniques. Silica fiber-ring cavities are used for chemical sensing based on evanescent-wave spectroscopy. Various arrangements for signal recovery and noise reduction, as an extension of most typical spectroscopic techniques, are illustrated and results on detection performances are presented.
Keywords: Fiber Bragg gratings; fiber resonator; Pound-Drever-Hall method; frequency locking; laser-frequency modulation; high-birefringence fiber
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MDPI and ACS Style
Gagliardi, G.; Salza, M.; Ferraro, P.; Chehura, E.; Tatam, R.P.; Gangopadhyay, T.K.; Ballard, N.; Paz-Soldan, D.; Barnes, J.A.; Loock, H.-P.; Lam, T.-Y.; Chow, J.H.; De Natale, P. Optical Fiber Sensing Based on Reflection Laser Spectroscopy. Sensors 2010, 10, 1823-1845.
Gagliardi G, Salza M, Ferraro P, Chehura E, Tatam RP, Gangopadhyay TK, Ballard N, Paz-Soldan D, Barnes JA, Loock H-P, Lam T-Y, Chow JH, De Natale P. Optical Fiber Sensing Based on Reflection Laser Spectroscopy. Sensors. 2010; 10(3):1823-1845.
Gagliardi, Gianluca; Salza, Mario; Ferraro, Pietro; Chehura, Edmond; Tatam, Ralph P.; Gangopadhyay, Tarun K.; Ballard, Nicholas; Paz-Soldan, Daniel; Barnes, Jack A.; Loock, Hans-Peter; Lam, Timothy T.-Y.; Chow, Jong H.; De Natale, Paolo. 2010. "Optical Fiber Sensing Based on Reflection Laser Spectroscopy." Sensors 10, no. 3: 1823-1845.