CMOS Circuit for Optical Communication

Abstract

The invention described herein pertains to transmission devices for optical fibre communication networks, and in particular to a CMOS circuit for high-speed driving of optical sources. Optical fibres are increasingly being employed in communication systems because they allow for faster transmissions while also lowering the size of the transmission medium. The dissertation looks on circuits for increasing the data rate of an optical receiver's operation. A novel input-stage topology for a transimpedance amplifier (TIA) is provided, and a new clock recovery architecture is proposed for a 50 percent higher clock rate. The circuit of claim 1, wherein said cascade is made up of an odd number of CMOS inverter stages, said MOS transistor (MP) and said pair of MOS transistors (MM and MS) are p-type, said power supply terminal is positive (Vdd), and said optical source terminal is anode.