A compact 40-Gb/s optical receiver module with an MU-connector interface was developed. To improve the electrical performance of the module, the CPW patterns of WG-PD and of the preamplifier IC in the facing area of the flip-chip structure were optimized for impedance matching. Furthermore, an impedance-matched film carrier was used to connect the preamplifier IC to an electrical coaxial connector for electrical signal output. Measurements showed a 3-dB down bandwidth of the optical/electrical response of at least 50 GHz and a clear open eye pattern for a 40-Gb/s NRZ signal input.
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering