Ultra-long-distance FBG sensor system based on spectrum-limited Fourier domain modelocking fibre laser with Raman pumps
2008 (English)In: Electronics Letters, ISSN 0013-5194, E-ISSN 1350-911X, Vol. 44, no 16, 961-963 p.Article in journal (Refereed) Published
A novel ultra-long-distance (up to 76 km) fibre Bragg grating (FBG) sensor system based on a spectrum-limited Fourier domain modelocking fibre laser is proposed. Raman pumps are employed to form a Raman amplifier to compensate the transmission loss of the long fibre and ensure ultra-long-distance sensing. Strain sensing based on such an ultra-long-distance FBG sensor system is demonstrated with a signal-to-noise ratio over 22 dB and a sensitivity of 1.03 pm/mu epsilon in the wavelength domain or 18.3 ns/mu epsilon in the time domain.
Place, publisher, year, edition, pages
2008. Vol. 44, no 16, 961-963 p.
IdentifiersURN: urn:nbn:se:kth:diva-17771DOI: 10.1049/el:20081461ISI: 000258593900012OAI: oai:DiVA.org:kth-17771DiVA: diva2:335816
QC 201005252010-08-052010-08-052013-11-19Bibliographically approved