The invention relates to a method for the transmission of information by means of an optical data transmission line, the ends of which are embodied as an optoelectronic interface, whereby a light source which can be modulated, such as for example a laser, is provided on the transmission side and a light sensitive receiver element is provided on the receiving side, such as for example a photodiode. A first set of A-scans is acquired within a time short enough to avoid any significant motion of the sample. The strap member has a first segment, a second segment and a third segment, wherein the second segment traverses the depression. A canister of compressed gas is provided to power the cylinder and the rod therein.