WITHDRAWN: Ultra-high resolution and large range on-chip Fano-enhanced thermometer based on spectral analysis

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Abstract Temperature detection is essential for evaluating the working condition of various physical, biological, and chemical systems. Optical temperature sensing tools, particularly resonator-based thermometers, have garnered significant attention due to their exceptional performance in selectivity, sensitivity and anti-electromagnetic interference. Recently developed thermometers based on optical whispering-gallery mode barcodes of the microbubble resonator achieve a large temperature range measurement and direct temperature readout. However, the large temperature variation may potentially result in inaccurate results due to similarities in spectra and inadequate precision caused by nonlinear collective shift. In this work, we have developed a novel and directly readable on-chip silicon-based Fano-enhanced thermometer utilizing a Mach-Zehnder interferometer configuration. The device comprises a fishbone waveguide and a curved strip waveguide coupled with an ultra-high Q racetrack microring resonator. The spectrum patterns of the thermometer are uniquely determined by the temperature and exhibit ultra-high slope ratio Fano resonances of over 2.0 ×10 4 dB/nm. Simultaneously, we have proposed a spectral analysis method to accurately derive actual temperatures, which enables an ultra-high detection resolution of 6.1×10 –4 ℃ and a large measurement range of 65 ℃ by leveraging a temperature database. These advancements support precise and extensive temperature sensing applications.
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Therefore, the authors do not wish this work to be cited as a reference. Questions should be directed to the corresponding author. Editorial notes are used to provide important context regarding the topic of a preprint or to alert readers to potential issues concerning that preprint or a downstream publication associated with it. For more information on editorial notes, see our Editorial Policies . Abstract The full text of this preprint has been withdrawn by the authors as it was submitted and made public without the full consent of all the authors. Therefore, the authors do not wish this work to be cited as a reference. Questions should be directed to the corresponding author. Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 2 posted You are reading this latest preprint version Show more versions Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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