Journal
OPTICS COMMUNICATIONS
Volume 518, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.optcom.2022.128337
Keywords
Tapered optical fibre; Optical pressure sensor; Adiabatic conditions; Stable mechanical structure
Categories
Funding
- National Natural Science Foundation of China [61835013, 12004112, 12034007, 11974109]
- Shanghai Natural Science Foundation [20ZR1414300]
- Science and Technology Commission of Shanghai Municipality [21XD1400700]
- Shanghai Sailing Program [20YF1410800]
- Chenguang Program - supported by Shanghai Education Development Foundation
- Shanghai Municipal Education Commission [20CG35]
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This study proposes and demonstrates an ultrasensitive and stable pressure sensor based on micro/nanofibres, showing advantages of high sensitivity, stable structure, and simple preparation process.
Micro/nanofibres have been emerging as an interdisciplinary platform for exploring novel sensing technology on the micro/nanoscale. This work proposes and demonstrates an ultrasensitive and stable pressure sensor based on the perturbation of adiabatic conditions during the optical mode evolving in the transition region. In our experiment, when attached to a glass slide, the sensor shows ultrahigh pressure sensitivity of 1.52 kPa-1 which is about three times the sensitivity of the waist region. Simultaneously, the sensing region of the fibre has a diameter of tens of microns to provide a better mechanical structure strength. These preliminary results demonstrate that the sensor has the advantages of stable structure, high sensitivity, and simple preparation process, which may have potential in practical applications.
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