Fast Optical Circuit Switch For Intra-Datacenter Networking

This paper presents a fast and large-scale optical circuit switch architecture for intra-datacenter applications that uses a combination of space switches and wavelength-routing switches are utilized. A 1,440 x 1,440 optical switch is designed with a fast-tunable laser, 8 x 8 delivery and-coupling switch, and a 180 x 180 wavelength-routing switch. We test the bit-error-ratio characteristics of all ports of the wavelength-routing switch using 180-wavelength 10-Gbps signals in the full C-band. The worst switching time, 498 microseconds, is confirmed and all bit-error ratios are acceptable.