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Refractometry-based air pressure sensing using glass microspheres as high-Q whispering-gallery mode microresonators

MPG-Autoren
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Vincent,  Serge
Vollmer Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;

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Subramanian,  Sivaraman
Vollmer Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society;

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Vollmer,  Frank
Vollmer Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Univ Exeter, Sch Phys & Astron, Living Syst Inst;

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Zitation

Bianchetti, A., Federico, A., Vincent, S., Subramanian, S., & Vollmer, F. (2017). Refractometry-based air pressure sensing using glass microspheres as high-Q whispering-gallery mode microresonators. OPTICS COMMUNICATIONS, 394, 152-156. doi:10.1016/j.optcom.2017.03.009.


Zitierlink: https://hdl.handle.net/21.11116/0000-0000-7F9F-0
Zusammenfassung
In this work a refractometric air pressure sensing platform timed on spherical whispering-gallery mode microresonators is presented and analyzed. The sensitivity of this sensing approach is characterized by measuring the whispering-gallery mode spectral shifts caused by a change of air refractive index produced by dynamic sinusoidal pressure variations that lie between extremes of +/- 1.81 kPa. A theoretical frame of work is developed to characterize the refractometric air pressure sensing platform by using the Ciddor equation for the refractive index of air, and a comparison is made against experimental results for the purpose of performance evaluation.