A cascade add/drop transceiver structure to solve the optical beat interference problem in subcarrier-multiplexed passive optical networks

Abstract

A cascade add/drop transceiver (CAT) structure in a star-ring architecture for subcarrier-multiplexed passive optical networks (SCM-PONs) is demonstrated to overcome the optical beat interference (OBI) problem. The proposed CAT structure is a simple, reliable, and feasible approach for SCM-PONs. Our experimental results reveal that the CAT structure in a ring can completely eliminate the OBI problem, and maintain a good transmission quality. (C) 2000 John Wiley & Sons, Inc.