Fibre Bragg Grating (FBG) sensors, can be used for temperature monitoring but the low thermal expansion coefficient of silica limits its sensitivity in cryogenic environment. However it will be shown that the use of a lead coating, electrodeposited on an aluminium pre-coated sensor, will enhance FBG sensing properties down to 5 K. Slight variations on the optical response of the coated FBG sensor are interpreted with the micrographic observation of the deposit.
Lead coating to improve Fiber Bragg Grating sensitivity at cryogenic temperatures / Lupi, Carla; Felli, Ferdinando; L., Ippoliti; M. A., Caponero; F., Fabbri; Paolozzi, Antonio. - STAMPA. - 5855:(2005), pp. 811-815. (Intervento presentato al convegno 17th International Conference on Optical Fibre Sensors tenutosi a Brugge, BELGIUM nel MAY 23-27, 2005) [10.1117/12.624224].
Lead coating to improve Fiber Bragg Grating sensitivity at cryogenic temperatures
LUPI, Carla;FELLI, Ferdinando;PAOLOZZI, Antonio
2005
Abstract
Fibre Bragg Grating (FBG) sensors, can be used for temperature monitoring but the low thermal expansion coefficient of silica limits its sensitivity in cryogenic environment. However it will be shown that the use of a lead coating, electrodeposited on an aluminium pre-coated sensor, will enhance FBG sensing properties down to 5 K. Slight variations on the optical response of the coated FBG sensor are interpreted with the micrographic observation of the deposit.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
