DETECTING THE PRESENCE OF STIMULATED BRILLOUIN SCATTERING IN A FIBER OF A COMMUNICATION SYSTEM

摘要

Methods and apparatuses are provided to determine whether SBS is present in a fiber of a communication system. An SBS detector comprising a circulator and a detector is used to determine whether SBS is occurring in a fiber. An input optical signal can be received at a first port of the circulator and output at a second port of the circulator where the fiber is connected. The circulator can receive a reflected optical signal from the fiber at the second port of the circulator and output the reflected optical signal at the third port. A detector connected to third port of the circulator receives the reflected optical signal and converts the reflected optical signal to a D.C. voltage.