Patent ID: 8351782

Claim:
A method of verifying polarity of fiber optic cables connected to optical ports of an optical circuit switch comprising: performing a first round of a port verification process on at least two optical ports wherein the port verification process is carried out by a computer program executed by a processing device and comprises: optically connecting the at least two optical ports on an optical circuit switch; transmitting a payload from at least one optical port in the at least two optical ports; determining if the payload was received at a second optical port in the at least two optical ports; assigning the at least two optical ports to a first group in the case that the predetermined payload was communicated between the at least two optical ports; and assigning the at least two optical ports to a second group in the case that the predetermined payload was not communicated between the at least two optical ports; performing additional rounds of the port verification process until a predetermined number of pairs of optical ports on the optical circuit switch are assigned to the first group or the second group; and determining that the first group of ports or the second group of ports has inverted polarity, wherein the group with the greater number of ports is determined to have correct polarity.