Fig. 1. (a) Schematic diagram of normal AWG; (b) schematic diagram of the designed AWG; (c) optical micrographs of the fabricated ultralow cross talk AWG.

Fig. 2. Simulated transmission spectrum of AWG (with and without errors) and MRR for the central wavelength of 1550 nm.

Fig. 3. (a) Schematic illustration of the ring resonator; (b) optical micrograph of the ring resonator.

Fig. 4. (a) Transmission spectra of the MRR drop side for both the simulation and actual test; (b) measured I-V curve and power consumption of the MRR; (c) relation between resonance wavelength and applied electric power on the heater of MRR; (d) shift of the resonance wavelength of MRR under 7.8 V voltage (red) and wavelength shift of the AWG first channel under voltage application (black).

Fig. 5. Measured spectra of AWG. (a) Reference normal AWG; (b) ultralow cross talk AWG integrated with MRRs.