Patent ID: 8571417
Filing Date: 2013-10-29
Classification: H04B,H04J

Abstract:
1. A system comprising: at least one tone generator operable to generate a plurality of modulation tones comprising at least a first modulation tone having a first tone frequency and a second modulation tone having a second tone frequency that is different from the first tone frequency; a first transmitter operable to: a second transmitter operable to: apply the second modulation tone to the second optical signal such that at least a portion of the second optical signal is divided into one or more sidebands; and the at least one tone generator being further operable to generate a third modulation tone having a third tone frequency equal to the first tone frequency, the system further comprising a third transmitter operable to: modulate a third information signal into a third optical signal; receive the third modulation tone from the at least one tone generator; and apply the third modulation tone to the third optical signal such that at least a portion of the third optical signal is dived into one or more sidebands.