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Optical frequency domain reflectometry with a narrow linewidth fiber laser

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6 Author(s)
Oberson, P. ; Group of Appl. Phys., Geneva Univ., Switzerland ; Huttner, B. ; Guinnard, O. ; Guinnard, L.
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The present a new optical frequency domain reflectometer based on a tunable fiber laser with a very narrow linewidth (about 10 kHz). This instrument performs reflectivity measurements with -110 dB sensitivity and 80 dB dynamic range. The narrow linewidth allows long-range measurements, at 150 m, with a spatial resolution of 16 cm. At short range, about 5 m, the resolution increases to subcentimeter.

Published in:

Photonics Technology Letters, IEEE  (Volume:12 ,  Issue: 7 )