Simple Elegant Optical Coupling Method for 20-GHz and 40-b/s Photoreceiver

In this paper, we describe a new design of a lens-tip fiber which facilitates the optoelectronic packaging of wideband photoreceivers for 10.7-Gb/s return-to-zero (RZ) and 40-Gb/s nonreturn-to-zero (NRZ) applications. After a brief presentation of what a photoreceiver is and what are the packaging specifications required, we describe the optical coupling technology used here. Finally, we demonstrate its efficiency on a 20-GHz-bandwidth photoreceiver.