Patent ID: 8380074

Claim:
A system comprising: a first optical transceiver having a first set of transmitters including eight independent lasers and a first set of eight receivers, of the eight transmitters a first group of four emit a first wavelength (λ 1 ), a second group of four emit a second wavelength (λ 2 ); and a second optical transceiver having a second set of transmitters including eight independent lasers coupled anti-symmetrically to the first set of eight receivers of the first optical transceiver and a second set of eight receivers coupled anti-symmetrically to the first set of eight transmitters of the first optical transceiver to provide eight channels, of the eight receivers a first group of four are sensitive to the first wavelength (λ 1 ), a second group of four are sensitive to the second wavelength (λ 2 ), wherein all optical path lengths are equal.