Fig. 1. Structural diagram of parallel microring array

Fig. 2. Schematic of improved microring array

Fig. 3. Structural diagram of improved double microring

Fig. 4. Structural diagrams and Spectra of CRIT Channel Routing. (a) Destructive interference; (b) MR1, MR2 constructive interference; (c) MR2, MR3 constructive interference; (d) output spectra

Fig. 5. Schematic of 2×2 router

Fig. 6. Spectra of router

Fig. 7. Effect of transmission coupling coefficient on router performance

Fig. 8. Effect of ΔR on router