Demonstration of a ZnO-Nanowire-Based Nanograting Temperature Sensor

Autor: Hongqian Cao, Danran Li, Kanghu Zhou, Ye Chen
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Photonic Sensors, Vol 13, Iss 1, Pp 1-7 (2022)
Druh dokumentu: article
ISSN: 1674-9251
2190-7439
DOI: 10.1007/s13320-022-0663-8
Popis: Abstract In this study, we experimentally demonstrate a miniature fiber thermometer based on tip-integrated ZnO-nanowire-nanograting. The sensor has a diameter less than 1 µm and the length of the Bragg grating is sub-10 µm. The ZnO-nanowire-nanograting is sensitive to the environmental temperature change. Thus, the intensity of the light whose wavelength is in the rising or falling region of the nanograting spectrum will vary with the shift in wavelength due to change in temperature. Taking one wavelength (655 nm) in the rise linear region of the nanograting spectrum, a sensitivity of 0.066 nW/°C in the air is achieved experimentally. The proposed temperature sensor has the superiorities of compactness, stableness, and easy fabrication compared to regular fiber grating sensors, offering great potential for detecting inside minimal volume environments.
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