Instrument and the procedure of inspection of an optical fiber

摘要

Instrument (10) intended to inspect a monomode optical fiber is subjected to a test, in which the optical pulses are introduced into the monomode optical fiber is subjected to the test and an optical signal sent is received in the monomode optical fiber is subjected to the test, the instrument comprising: a source of the optical power (12) of great length of the wave and of low power in order to generate the optical pulses; an optical detector which is compatible with the source of optical power of great length of the wave and of low power to receive the optical signal sent by the monomode optical fiber is subjected to a test, a monomode optical coupler (16) having two inlet accesses and an output access; a length of monomode optical fiber connected to the output access of the monomode optical coupler and the connector of the output fiber used to create an optical delay so that an electric switching noise due to the triggering of the laser is separated from the first optical pulse sent; an optical receiver constituted by an operational amplifier having a wide band designed to operate in two gain adjustments various; at least one microprocessor for controlling the electronics, acquiring the signals and processing the signals; a display in order to indicate the results relating to the fiber and the distances of the reflections and of the ends of the fibers.