Dual Electro-optic Frequency Comb Photonic Thermometry
Department of Commerce
@usgov.doc_gov_dual_electro_optic_frequency_comb_photonic_the_773895c3
Department of Commerce
@usgov.doc_gov_dual_electro_optic_frequency_comb_photonic_the_773895c3
Data from peer-reviewed publication: A. J. Fleisher et al., Dual electro-optic frequency comb photonic thermometry, Optics Letters. We report a precision realization of photonic thermometry using dual-comb spectroscopy to interrogate a ?-phase-shifted fiber Bragg grating. We achieve read-out stability of 7.5 mK at 1 s and resolve temperature changes of similar magnitude?sufficient for most industrial applications. Our dual-comb approach enables rapid sensing of dynamic temperature, and our scalable and reconfigurable electro-optic generation scheme enables a broad sensing range without laser tuning. Reproducibility on the International Temperature Scale of 1990 is tested, and ultimately limited by the frequency reference and check-thermometer stability. Our demonstration opens the door for a universal interrogator deployable to multiple photonic devices in parallel to potentially unravel complex multi-physical quantity measurements.
Organization: Department of Commerce
Last updated: 2025-09-30T05:19:09.327251
Tags: dual-comb-spectroscopy, electro-optic-frequency-comb-generators, frequency-combs, photonic-thermometry, remote-sensing, thermometry
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