Fig. 1. Structural diagram of new BRW

Fig. 2. Effect of refractive index ratio k on the performance of DBR

Fig. 3. Different combination types of DBR

Fig. 4. Effect of medium thickness on the performance of DBR

Fig. 5. Effect of medium period m on the performance of DBR

Fig. 6. (a) Effect of medium period m on defect modes; (b) enlarged drawing of defect modes

Fig. 7. Effect of SU-8 thickness on defect modes

Fig. 8. Structure and simulation results of new BRW. (a) Structures of BRW; (b) internal electrical field; (c) one-dimension electrical field

Fig. 9. Effect of length of metasurface on defect modes. (a) L2=20 nm; (b) L2=160 nm

Fig. 10. Scanning results of new BRW. (a) H1=100 nm, H2=10 nm, L1=200 nm, L2=L1x; (b) H1=100 nm, H2=30 nm, L1=200 nm, L2=L1x; (c) H1=100 nm, H2=50 nm, L1=200 nm, L2=L1x; (d) H1=60 nm, H2=30 nm, L1=200 nm, L2=L1x

Fig. 11. Refine scanning results of new BRW

Fig. 12. New BRW array