Fig. 1. POI blocking diagram based on AWG interconnect

Fig. 2. Data center optical interconnect structure based on improved multi-channel matrix reception

Fig. 3. Schematic diagram of matrix reception

Fig. 4. Bit error rates (BERs) and their eye diagrams when 4 wavelength signals arrive at same time. (a) 10 Gbit/s transmission;(b) 40 Gbit/s transmission

Fig. 5. BERs and their eye diagrams when 3 wavelength signals arrive at same time. (a) 10 Gbit/s transmission; (b) 40 Gbit/s transmission

Fig. 6. BERs and their eye diagrams when 2 wavelength signals arrive at same time. (a) 10 Gbit/s transmission; (b) 40 Gbit/s transmission

Fig. 7. Collection of eye diagrams at different receivers and different transmission rates. (a), (d), (g),(j) 4-way signal; (b), (e), (h), (k) 3-way signal; (c), (f), (i), (l) 2-way signal

Fig. 8. BER of different channel signals at 10 Gbit/s. (a) Unbalanced; (b) after equalization

Fig. 9. Eye diagrams after equalization. (a) 2-way signal; (b) 3-way signal; (c) 4-way signal

Fig. 10. Comparison of number of filters and receivers required when number of wavelengths reached simultaneously are M=3 and M=4^［9］