Mid-infrared fiber spectrometer

The fast expanding market of micro fluidic reactor systems in the chemical industry demands for small spectrometers in the mid-infrared (MIR) as analyzer for automatic process control. Conventional free-space MIR spectrometers are usually large and conventional fiber spectrometers are limited to the near-infrared (NIR) range up to 2.5 µm. We developed a fiber spectrometer for micro fluidic reactors and fluoride fibers with a spectral range up to 4 – 5 µm covering characteristic vibration bands of many molecules. The fluoride fibers with robust jacket and fiber connectors have a core/cladding diameter of 450/600 µm, a length of 2 – 5 m, and a minimum bending radius of 100 mm.