be picked up via spectral interrogation using a solid state
spectrometer (Fiber Scan 804, FBGS, Geel, Belgium). The
spectrometer has 4 optical inputs and our DTG arrays can
contain up to 36 discrete FBG elements, giving a maximum
number of sensing elements of 144 using this configuration.
Our composite 125 element sensor array contained 4 active
fibers; 3 with 30 elements and 1 with 35 elements used for
the vertical component of the array