Open AccessUltrahigh‐Resolution Optical Fiber Thermometer Based on Microcavity Opto‐Mechanical Oscillation
Author(s) -
Liu Yize,
Jiang Junfeng,
Liu Kun,
Wang Shuang,
Niu Panpan,
Xu Tianhua,
Zhang Xuezhi,
Wang Ziyihui,
Wang Tong,
Ding Zhenyang,
Liu Tiegen
Publication year - 2022
Publication title -
advanced photonics research
Language(s) - English
Resource type - Journals
ISSN - 2699-9293
DOI - 10.1002/adpr.202200052
Subject(s) - thermometer , resonator , oscillation (cell signaling) , materials science , resolution (logic) , optics , optical fiber , optoelectronics , optical cavity , temperature measurement , sensitivity (control systems) , physics , electronic engineering , computer science , thermodynamics , chemistry , laser , biochemistry , artificial intelligence , engineering
High‐resolution temperature measurement is nerve‐wracking obstruction for precise characterization of many physical, chemical, and biological processes. To solve this problem, a novel microcavity–optomechanical–oscillation‐based thermometer is proposed. The microcavity serving as a link parametrically couples the mechanical resonator and optical resonator in the same structure and provides a natural and highly sensitive temperature transduction mechanism and ultrahigh‐resolution optical demodulation. The mathematical model of geometrical parameters, mechanics, and material properties for temperature response mechanism is established and verified experimentally. The proposed thermometer has a thermal sensitivity of 11 300 Hz °C −1 and an ultrahigh‐temperature resolution of 1 × 10 −4 °C, to the best of one's knowledge, which is the highest temperature resolution with a silica cavity.