Patent ID: 8948593
Filing Date: 2015-02-03
Classification: H04J

Abstract:
1. An optical network interconnect device that interconnects a first WDM network for transmitting a WDM optical signal with first wavelength spacing and a second WDM network for transmitting a WDM optical signal with second wavelength spacing that is wider than the first wavelength spacing, the optical network interconnect device comprising: an optical branch device configured to branch the WDM optical signal of the first WDM network; and an optical filter configured to remove a wavelength component which is not used in the second WDM network from the branched WDM optical signal transferred from the first WDM network to the second WDM network, wherein the second wavelength spacing is twice the first wavelength spacing, the optical network interconnect device interconnects a third WDM network for transmitting a WDM optical signal with the second wavelength spacing, the optical filter is an interleaver to generate a pair of deinterleaved WDM optical signals from the branched WDM optical signal, one of the pair of deinterleaved WDM optical signals is transferred to the second WDM network, and the other of the pair of deinterleaved WDM optical signals is transferred to the third WDM network.