Patent ID: 8355630

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 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.