YC
Yaonian Cui
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A suspended polySi heater is presented for use as a mid-IR light source in a microspectrometer based on a linearly variable optical filter (LVOF). Distributed electrical powering of a segmented structure with a specially designed suspension system is used for obtaining a temperature profile that is constant over the length of the element with a peak temperature significantly higher as compared to the conventional on-chip hot-wires. The integrated LVOF design results in an enhanced spectral emission and facilitates the use in the composition measurement of liquids and gases by absorption spectroscopy.
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A suspended polySi heater is presented for use as a mid-IR light source in a microspectrometer based on a linearly variable optical filter (LVOF). Distributed electrical powering of a segmented structure with a specially designed suspension system is used for obtaining a temperature profile that is constant over the length of the element with a peak temperature significantly higher as compared to the conventional on-chip hot-wires. The integrated LVOF design results in an enhanced spectral emission and facilitates the use in the composition measurement of liquids and gases by absorption spectroscopy.