Clos lives on in optical packet switching

Photonic Data Buffers

“…Second, the speed of the router for optical networking applications become limited by the advances in DRAM technologies whose access time has been reducing only at 7% per year [15]. Third, the limitations in electronic switch capacity [16][17][18] [14].…”

Cost Efficient Upgrading of OPS Nodes

“…The output block can be made simpler than the input block; however it does make the block different, decreasing the volume advantages mentioned in section 2.2. We will now apply the described SKOL technique to two OPS Clos node architectures, described in more detail in [5]. …”

“…Both technologies need fast optical switching matrices, of which 2 major families are Semiconductor Optical Amplifier (SOA) based Broadcast & Select (B&S) architectures and Arrayed Waveguide Grating (AWG) based designs [4]. We discussed Clos architectures for OPS nodes in [5], however, upgradeability of OPS nodes is also of key importance. Starting from SKOL, a more upgradeable modification of the…”

New nodal design for high throughput data vortex optical interconnection network

“…The other category is based on space switching that electrical interconnect networks regularly use to scale to a large number of port count. Wavelength dimension is often utilized to pack more data in a short period of time slot or in combination with space switches to achieve larger I/O port count [7][8][9][10][11]. Among the various networks, the data vortex architecture is uniquely designed to support large capacity, minimal routing processing and high scalability for optical implementations.…”