Cc. Chang et St. Vohra, SPECTRAL BROADENING DUE TO NONUNIFORM STRAIN FIELDS IN FIBER BRAGG GRATING BASED TRANSDUCERS, Electronics Letters, 34(18), 1998, pp. 1778-1779
An experimental investigation of strain gradient induced spectral broa
dening in fibre Bragg grating (FBG) based transducers is carried out.
Closed form analytical results describing measurand induced strain gra
dients in circular geometry transducers are derived, which allow exper
imental demonstration of novel FBG bonding approaches which eliminate
spectral broadening and should lead to the development of advanced FBG
based transducers.