Mid-infrared fibers are the ones that work in the 2 µm – 20 µm wavelength range, where silica fibers cannot be employed. There are several types, but in this post we are going to focus on two of them: fluoride fibers, which are made of several fluoride glasses, and hollow core fibers, in which the core is a hollow region. In particular, we are going to explain their main characteristics, including their advantages and weaknesses; as well as their applications, which can achieve high relevance in the next few years.
