Suppression of the polarization dependence of fiber Bragg grating interrogation based on a wavelength-swept fiber laser

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We propose and demonstrate methods for suppressing the polarization dependence in the interrogation of birefringent fiber Bragg gratings. A wavelength-swept fiber laser with a polarized output was used as the light source. Two polarization-averaging methods, a depolarization scheme and a polarization scrambling scheme, were investigated and compared. The proposed techniques successfully stabilized the reflection spectrum of a birefringent grating regardless of the polarization state of the source laser and birefringence of the lead fiber. The results of this work eliminate one of the major practical difficulties in current fiber Bragg grating interrogation.
Publisher
IOP PUBLISHING LTD
Issue Date
2006-04
Language
English
Article Type
Article
Keywords

SENSOR SYSTEM; STRAIN FIELD; BIREFRINGENCE; WRITTEN; LOAD

Citation

SMART MATERIALS & STRUCTURES, v.15, no.2, pp.435 - 440

ISSN
0964-1726
DOI
10.1088/0964-1726/15/2/024
URI
http://hdl.handle.net/10203/23281
Appears in Collection
PH-Journal Papers(저널논문)
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