Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence
1.3 PHYSICAL SCIENCES, Electrical and electronic engineering
This paper investigated the fabrication of a singlemode-multimode-singlemode fiber structure based on a chalcogenide (As2S3 and AsxS1−x) multimode fiber sandwiched between two standard silica singlemode fibers using a commercial fiber fusion splicer. The temperature dependence of this hybrid fiber structure was investigated and a first proof of concept showed that the hybrid SMS fiber structure has an average experimental temperature sensitivity of circa 84.38 pm/°C over a temperature range of 20 °C∼100°C at the wavelength range around 2 μm. The measured results show a general agreement with numerical simulations based on a guided-mode propagation analysis method. Our result provides a potential platform for the development of compact, high-optical-quality, and robust sensing devices operating at the midinfrared wavelength range.
L. She et al., "A Chalcogenide Multimode Interferometric Temperature Sensor Operating at a Wavelength of 2 μm," in IEEE Sensors Journal, vol. 17, no. 6, pp. 1721-1726, 15 March15, 2017, doi: 10.1109/JSEN.2017.2651382.