High-precision temperature sensor based on weak measurement

• DOI: 10.1364/oe.27.021455
• Publication Date: 2019-07-16T20:48:45Z
• Authors: Yanjia Li; Hongjing Li; Jingzheng Huang; Cheng Fang; Miaomiao Liu; Chaozheng Huang; Guihua Zeng
• Keywords: Atmospheric temperature range; Accuracy and precision; Operating temperature; Postselection

High-precision temperature sensor is demonstrated based on weak measurement using spectrum domain analysis. By introducing an extra phase to the postselection, operating range and precision can be conveniently modulated. Spectral shifts resulted from variation are robust practical imperfections. The of 2.4 × 10-6°C achieved by a currently available spectrometer. maximum associated with nematic liquid crystals (NLCs) sample. Moreover, sensitivity 16.16 nm/°C obtained experimentally in different linear intervals.