An O-band DFB laser heterogeneously integrated on bulk-silicon platform is presented. A high wall plug efficiency of over 8% up to 70°C is achieved due to efficient heat dissipation from III/V active region to silicon platform. The single-mode operation is maintained in a wide current range with side-mode suppression ratio over 45dB. This result completes the optical device library suite for the bulk-silicon platform used in most semiconductor products.
Optical interconnect for a DDR3 DRAM device is verified at a 4:1-serialized 1.6-Gbps data rate using a FPGA-based memory controller board and optical transceiver chips with bulk-Si-based photonic die and electronic die co-packaged.
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