Data Center Network and Method for Deploying the Data Center Network

A data center network, comprising:

• one core switch group;
• and
• m cyclic arrayed waveguide grating (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 any 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 by using an optical uplink,
• wherein the Y downlink CAWGs are connected to each core switch in the core switch group separately by 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 any 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, and k are less than or equal to N.