I'd like to know a following point about ADN2847 application circuit.
According to Figure 15 in the datasheet of ADN2847(RevB), a laser with common PD-cathode and LD-anode is used for this circuit.
If a laser with common PD-anode and LD…
you can use the ADN2847 or ADN2871 or other laser drivers AC coupled on the anode side.
See Figure 15. of the ADN2847 AC-Coupled 50 Mbps to 3.3 Gbps. This shows the AC injection on the cathode side, in your case you would connect IMODN to…