Enhancement of the sensitivity of a temperature sensor based on Fiber Bragg Gratings via weak value amplification

Abstract

We present a proof-of-concept experiment aimed at increasing the sensitivity of temperature sensors implemented with Fiber Bragg gratings by making use of a weak value amplification scheme. The technique requires only linear optics elements for its implementation, and appears as a promising method for extending the range of temperatures changes detectable to increasingly lower values than state-of the-art sensors can currently provide. The device implemented here is able to generate a shift of the centroid of the spectrum of a pulse of $\sim 0.035\mathrm{nm}{/}^{\circ }\mathrm{C}$, a nearly fourfold increase in sensitivity over the same Fiber Bragg Grating system interrogated using standard methods.

4 pages, 4 figures

References in corpus (4)

• Ultrasensitive Beam Deflection Measurement via Interferometric Weak Value Amplification
• Precision frequency measurements with interferometric weak values
• Measurement of sub-pulse-width temporal delays via spectral interference induced by weak value amplification
• Observation of spectral interference for any path difference in an interferometer

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• Practical Advantages of Almost-Balanced-Weak-Values Metrological Techniques
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• Noise suppression in inverse weak value based phase detection
• Enhanced on-chip frequency measurement using weak value amplification