Fig. 1. Schematic structure of the four-channel Ⅲ-V/Si laser array with silicon waveguide DBR sampled grating

Fig. 2. Schematic diagram and mode distribution diagram of one channel Ⅲ-V/Si laser

Fig. 3. Schematic of the distributed Bragg sampling grating on the silicon waveguide

Fig. 4. Simulated transmission spectrum of the four-wavelength Ⅲ-V/Si laser array with silicon waveguide DBR sampled grating

Fig. 5. Simulated evanescent coupling efficiency between the Ⅲ-V tapered waveguide 2 and the silicon waveguide with the length of the Ⅲ-V tapered waveguide 2

Fig. 6. The scanning electron microscope image of silicon-based DBR sampled grating on the silicon waveguide of SOI wafer. The inset is the image of the seed grating

Fig. 7. The microscopic photo of the fabricated four-channel Ⅲ-V/Si laser array chip with silicon waveguide DBR sampled grating

Fig. 8. Measured P-I curve of the four-channel Ⅲ-V/Si laser array with silicon waveguide DBR sampled grating under continuous wave at room temperature

Fig. 9. Simulated two-dimension thermal distribution of the one channel of the four-channel Ⅲ-V/Si laser with silicon waveguide DBR sampled grating

Fig. 10. Measured spectrum of the four-channel Ⅲ-V/Si laser array with silicon waveguide DBR sampled grating under 50 mA current at room temperature

Fig. 11. Measured RIN of four-channel Ⅲ-V/Si laser array