A comparison of three bandwidth measurement techniques for multimode optical fibers

This paper presents the results of an experiment intended to compare three distinct methods of measuring the bandwidth of a telecommunication grade, multimode optical fiber. The three methods are: 1) the time-domain method; 2) the frequency-domain method; and 3) the pulse-spectrum analysis method. We find good agreement between the frequency-domain method and the pulse-spectrum analysis method, but the time-domain method yields results that are lower than the other two for the cases we considered.