Progress of 800G integrated coherent receiver

This paper shows an integrated coherent receiver (ICR) based on silicon photonics, with a packaging size of 26.2 mm*12 mm*4.35 mm. The DC signals are controlled by 34 straight pins, while the RF signals are transmitted via a flexible printed circuit (FPC). The ICR is defined by the OIF Implementation Agreement for Integrated Dual Polarization Micro-Intradyne Coherent Receivers¹ . After packaging, the optoelectronic 3dB bandwidth exceeds 70 GHz and the receiver achieves a minimal BER of 2e-5, and sensitivity surpassing -28 dBm at 1567.13nm when operating under 400G PM-QPSK (Quadrature Phase Shift Keying).