1Gb/s×12ch Receiver LSI for Parallel Optical Interconnections

Abstract

A 12-channel parallel optical receiver LSI has been developed for intra-and inter-cabinet interconnections in switchings systems, and routers with Tb/s-class throughput. The LSI was fabricated using 0.44-μm BiCMOS technology. It incorporates automatic decision threshold control circuits, which are optimized for receiving non-coded parallel optical data, and a power supply circuit to suppress inter-channel crosstalk in the chip. An optical dynamic range exceeding 10dB, a skew tolerance of 380 ps, and a power consumption of 1.35 W with a 3.3-V power supply were obtained at 1-Gb/s/ch operation. These results indicate the suitability of the receiver for intra-and inter-cabinet interconnections with Gbyte/s-class throughput.