Patent ID: 6765194
Filing Date: 2004-07-20
Classification: G01D,G01L,G01M

Abstract:
A method for determining measured values in an arrangement including a plurality of optical fiber Bragg grating sensors, the method comprising:disposing the plurality of optical fiber Bragg grating sensors so as to form at least one sensor array, each of the respective optical fiber Bragg grating sensors in each of the at least one sensor array being arranged one behind the other, being connected by fiber optics, and exhibiting a different respective frequency selectivity; providing at least one respective delay element in at least one of the at least one sensor array; providing a query signal of temporally differentiated, frequency-selective narrow band light of variable center wavelength; receiving the query signal using the plurality of optical fiber Bragg grating sensors; and evaluating a response signal so as to assign respective individual partial signals of the response signal to one or more of the plurality of optical fiber Bragg grating sensors based on respective frequencies of the individual partial signals and based on respective propagation delays of the individual partial signals, the respective propagation delays being substantially determined by the at least one respective delay element.