64 GBaud high-bandwidth micro intradyne coherent receiver using high-efficiency and high-speed InP-based photodetector integrated with 90° hybrid

A high-bandwidth micro intradyne coherent receiver for 64 GBaud data rate using InP-based 90° hybrid integrated with photodiodes is demonstrated. The package is compliant with OIF Micro-ICR implementation agreement. A 3 dB bandwidth of 40 GHz with differential transimpedance of 4500 ohm and high average responsivity more than 70 mA/W within the C-band are achieved.