The Fiber Sensing Interrogator (FSI-S) model of the Sedona series is a high performance FBG interrogator for fiber optic sensing. The interrogator is made up of a broadband light source, an optical circulator to direct light and a photonic integrated circuit with an Arrayed Waveguide Grating (AWG). The reflected light from the sensing FBGs is separated into individual wavelengths through the AWG, then the wavelength’s light is converted into an electrical signal via the photodiodes, which these electrical signals are transformed into digital values in the Field-Programmable Gate Array (FPGA). These values are translated into useful data through the on-board arm based processor, plotted to the user interface in real time, and is stored locally or to the cloud for further post process data analysis. Up to 8 FBG sensors can be monitored simultaneously in a single channel, with the FSI-S algorithm switching between its 4 channels automatically. Depending upon the sensor connected
to the Sedona system, the unit will plot and log the data in various formats: acceleration, temperature, pressure, strain and wavelength. For acceleration measurements, the data will also be processed through Fast Fourier Transformer (FFT) so that the acceleration is plotted over frequency. For an optimum performing accelerometer please contact Optilab for our FAC520 fiber optic accelerometer.