Title :
Chirped fiber optic Bragg grating interrogator for a Bragg grating strain sensor
Author :
Chtcherbakov, A.A. ; Swart, P.L.
Author_Institution :
Dept. of Electr. & Electron. Eng., Rand Afrikaans Univ., Auckland Park, South Africa
Abstract :
We propose a chirped Bragg grating interrogator for a uniform Bragg grating sensor. The wavelength of light reflected by the sensing grating is a function of strain. The position within the chirped Bragg gating the light is reflected from is a function of its wavelength. We determine this position by amplitude modulating the light source and measuring the phase of the reflected light and thus determine the value of the strain.
Keywords :
Bragg gratings; chirp modulation; fibre optic sensors; strain sensors; Bragg grating strain sensor; chirped fiber optic Bragg grating interrogator; Amplitude modulation; Bragg gratings; Capacitive sensors; Chirp; Fiber gratings; Optical fiber sensors; Optical fibers; Optical sensors; Phase modulation; Strain measurement;
Conference_Titel :
Optical Fiber Sensors Conference Technical Digest, 2002. Ofs 2002, 15th
Conference_Location :
Portland, OR, USA
Print_ISBN :
0-7803-7289-1
DOI :
10.1109/OFS.2002.1000543
