Pseudo-heterodyne signal processing scheme for interrogation of fiber Bragg grating sensor arrays

Show simple item record

dc.contributor.author Chatterjea, C. K. -
dc.contributor.author James, Stephen W. -
dc.contributor.author Tatam, Ralph P. -
dc.date.accessioned 2012-07-12T23:02:19Z
dc.date.available 2012-07-12T23:02:19Z
dc.date.issued 1998-12-31T00:00:00Z -
dc.identifier.citation C.K.Chatterjea, S.W.James and R.P.Tatam. Pseudo-heterodyne signal processing scheme for interrogation of fiber Bragg grating sensor arrays. SPIE Conference on Laser Interferometry IX: Techniques and Analysis, SPIE Vol. 3478, July 1998
dc.identifier.isbn 0819429333 -
dc.identifier.issn 0277-786X -
dc.identifier.uri http://dx.doi.org/10.1117/12.312945 -
dc.identifier.uri http://dspace.lib.cranfield.ac.uk/handle/1826/5050
dc.description.abstract An intensity-based interrogation technique for arrays of fiber bragg grating (FBG) sensors is reported. The technique is based upon each FBG forming one mirror of a Michelson interferometer. Source wavelength modulation is combined with an unbalanced interferometer to produce a carrier signal. Carrier frequencies are characteristic of the optical path length imbalance and hence grating position within the array. The intensity of the carrier signal is directly related to the optical power reflected from the grating and hence the strain applied to the grating. Strain resolution of ∼3μm/m is demonstrated with an ∼350μm/m sensor range. Multiplexing is demonstrated and techniques to extend the range are disc en_UK
dc.publisher International Society for Optical Engineering; 1999 en_UK
dc.subject Bragg gratings en_UK
dc.subject multiplexing en_UK
dc.subject fibre-optic sensors en_UK
dc.subject interferometry en_UK
dc.title Pseudo-heterodyne signal processing scheme for interrogation of fiber Bragg grating sensor arrays en_UK
dc.type Article -


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search CERES


Browse

My Account

Statistics