1. Demonstration of a Complete 12-Port Terabit Capacity Optical Packet Switching Fabric Benjamin A. Small, Odile Liboiron-Ladouceur, Assaf Shacham, John P. Mack, and Keren Bergman Columbia University Department of Electrical Engineering

2. C OLUMBIA U NIVERSITY Lightwave Research Laboratory (1) Outline Introduction Switching Node and Packet Structure Data Vortex Topology Experimental Setup Experimental Results Conclusions

3. C OLUMBIA U NIVERSITY Lightwave Research Laboratory (2) Interconnection Networks ▪High performance computing systems ▪Next-generation telecom routers ▪Storage area networks Experimental System ▪1212 switch ▪~100 ns routing latency ▪160 Gbps per port ▪Terabit capacity Introduction OPS network OPS network

4. C OLUMBIA U NIVERSITY Lightwave Research Laboratory (3) Switching Node Design λFλF λHλH O/E control logic 50:50 70:30 North West East South SOA transparent routingwavelength-parallel multi- λ packet

5. C OLUMBIA U NIVERSITY Lightwave Research Laboratory (4) Packet Structure packet (22.4 ns) payload (19.3 ns) slot (25.7 ns) deadtime (3.3 ns)guardtime (1.6 ns) Frame H0 H2 H3 P0 … P15 Frame H1 H2 P0 … P15 multiple-wavelength packet

6. C OLUMBIA U NIVERSITY Lightwave Research Laboratory (5) H2 Packet Structure H3H1H0F wavelength (nm) average power (dBm)

7. C OLUMBIA U NIVERSITY Lightwave Research Laboratory (6) Data Vortex Topology output nodeinput node west east north south deflection structure

8. C OLUMBIA U NIVERSITY Lightwave Research Laboratory (7) System Implementation

9. C OLUMBIA U NIVERSITY Lightwave Research Laboratory (8) Experimental Setup … BERT EDFA λ PPGDTG P0 mod F H0 H1 H2 H3 mod SOA P1 Rx P15 5 10 Gbps~39 Mbps

10. C OLUMBIA U NIVERSITY Lightwave Research Laboratory (9) Experimental Results P F H0 H1 H2 H3 0001 0010 0011 0101 0110 0111 1001 1010 1011 1101 1110 1111 50 ns/div 7 hops ≈ 160 ns 3 hops ≈ 60 ns

11. C OLUMBIA U NIVERSITY Lightwave Research Laboratory (10) Experimental Results H0 H1 H2 H3 F +3 hop deflection 1101 input #7 input #4 20 ns/div

12. C OLUMBIA U NIVERSITY Lightwave Research Laboratory (11) Experimental Results

13. C OLUMBIA U NIVERSITY Lightwave Research Laboratory (12) Conclusions Terabit capacity ▪Full 1212 switching capabilities ▪160 Gbps payload 26 ns packet slots, 19 ns payload 110 ns median routing latency 10 -12 BER (>1.3 dB range) Internal contention resolution http://lightwave.ee.columbia.edu/