Long term stability of spectral measurement systems for fiber bragg grating sensors

Nicolas Roussel (1) , Pierre Ferdinand (1) , Laurent Maurin (1)

1 LCFO - Laboratoire Capteurs Fibres Optiques

This paper addresses the metrological stability of spectral measurements performed with a smart FBG sensing instrument. With a sophisticated tracking system based on a real-time drift compensation, we obtained, during 16 days, an unrivalled measurement stability, as low as: 0.0074 fm/h with a standard deviation: 0.032 pm. This level of performance opens the way, not only to high quality metrology, but also to long-term structure monitoring.

Keywords: Convergence of numerical methods; Fiber Bragg Grating; Fiber optic sensors; Measurements; Optical resolving power; Fiber Bragg Grating Sensors; Drift; Units of measurement; Stability; Long term stability; Long-term structures; Optical fiber sensor; Spectral measurement; Spectral measurement system; Standard deviation; instrumentation; Distributed and Quasi-distributed sensing

Domains: Instrumentation and Detectors [physics.ins-det]; Optics [physics.optics]

Nicolas Roussel, Pierre Ferdinand, Laurent Maurin. Long term stability of spectral measurement systems for fiber bragg grating sensors. APOS 2013 Fourth Asia Pacific Optical Sensors Conference, Oct 2013, Wuhan, China. pp.89243E, ⟨10.1117/12.2033932⟩. ⟨cea-01823918⟩