Spectral Characterization and Modeling of Wavelength-shifting Fibers

Understand

We have constructed a detailed software model of photon transport in clear and wavelength shifting polystyrene optical fibers based on the GEANT4 framework.

• We validate the model with measurements obtained from several different lengths of fiber illuminated with several LEDs, using two independent acquisition systems.
• The simulated spectral and spatial light distributions at the end of the fiber and the resultant attenuation lengths show good agreement with measurement.
• We use the model to predict the fiber behaviour for several test cases and discuss potential applications.