Open AccessHigh-precision temperature sensor based on weak measurement
Author(s) -
Yanjia Li,
Hongjing Li,
Jianheng Huang,
Fang Cheng,
Miaomiao Liu,
Chaozheng Huang,
Guihua Zeng
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.021455
Subject(s) - optics , liquid crystal , materials science , sensitivity (control systems) , temperature measurement , spectrometer , atmospheric temperature range , range (aeronautics) , operating temperature , phase (matter) , accuracy and precision , postselection , physics , electronic engineering , quantum mechanics , meteorology , quantum entanglement , composite material , quantum , thermodynamics , engineering
High-precision temperature sensor is demonstrated based on weak measurement using spectrum domain analysis. By introducing an extra phase to the postselection, the operating temperature range and temperature precision can be conveniently modulated. Spectral shifts resulted from temperature variation are robust to practical imperfections. The precision of 2.4 × 10 -6 °C can be achieved by a currently available spectrometer. The maximum operating range is associated with the nematic temperature range of nematic liquid crystals (NLCs) sample. Moreover, the temperature sensitivity of 16.16 nm/°C is obtained experimentally in different linear operating intervals.