A 10-Gbps CMOS single chip optical receiver with 2-D meshed spatially-modulated light detector

This paper presents a 10-Gbps optical receiver with monolithically integrated CMOS photo detector. A transimpedance amplifier with nested feedback and shunt-peaking is proposed for broad-band and high gain operations. Incorporating a 2D meshed spatially-modulated light detector, the optical receiver is capable of delivering 25 kOmega transimpedance gain when driving 50 Omega output loads. The operating speed is improved by 3X over the prior art with the same technology. Implemented in a generic 0.18-mum CMOS technology, the chip size is 0.95 mmtimes0.8 mm. This receiver core drains 118 mW from 1.8 V supply.