Patent ID: 9648401
Date: 2017-05-09
CPC Classifications: H04J,H04Q

Claim:
1. A data center network, comprising: one core switch group; m cyclic arrayed waveguide gating (CAWG) groups; and m edge switch groups, wherein the m CAWG groups and the m edge switch groups are in a one-to-one correspondence, wherein the m CAWG groups comprise a first CAWG group, wherein the m edge switch groups comprise a first edge switch group, wherein the first edge switch group is one of the m edge switch groups, wherein the first CAWG group is a CAWG group corresponding to the first edge switch group, wherein the core switch group comprises k core switches, wherein the first CAWG group comprises 2*Y N*N CAWGs, wherein the 2*Y CAWGs comprise Y uplink CAWGs and Y downlink CAWGs, wherein the Y uplink CAWGs are connected to each core switch in the core switch group separately using an optical uplink, wherein the Y downlink CAWGs are connected to each core switch in the core switch group separately using an optical downlink, and wherein the first edge switch group comprises multiple edge switches, wherein each edge switch of the multiple edge switches is connected to an uplink CAWG and a downlink CAWG in the first CAWG group separately, wherein at least one of the number of edge switches in the first edge switch group, a number of ports of each edge switch in the first edge switch group, or k are less than or equal to N, wherein the first edge switch group further comprises multiple edge optical multiplexer demultiplexer groups separately corresponding to the multiple edge switches in the first edge switch group, wherein each edge optical multiplexer/demultiplexer group comprises at least one edge optical multiplexer or demultiplexer, and wherein each edge switch of the multiple edge switches being connected to the uplink CAWG and the downlink CAWG in the first CAWG group separately comprises each edge switch being connected to the uplink CAWG in the first CAWG group using a corresponding edge optical multiplexer/demultiplexer group and the optical uplink connected to the edge optical multiplexer/demultiplexer group and each edge switch being connected to the downlink CAWG in the first CAWG group using the edge optical multiplexer/demultiplexer group and the optical downlink connected to the edge optical multiplexer/demultiplexer group.