Abstract
M.Ing.
A study was done on optical fibre hydrophones. Integrated optic
hydrophone components as well as optical fibre components were
investigated. An optical fibre coupler was successfully manufactured
with an etch process. The coupling ratio can be varied mechanically or
by means of refraction index variation. Experimental procedures and
results will be shown. Bending losses excited in an optical fibre coil
were investigated as a function of different coil diameters. The results
were extrapolated to determine the amount of losses arising in a
hydrophone coil.