A Novel Pulse-Positioned Coding Scheme for Fiber Fault Monitoring of a PON

In this letter, we propose a novel optical coding scheme for fiber link quality monitoring of a passive optical network (PON). The proposed scheme named incrementally pulse positioned coding (IPPC) is practically very attractive due to its simple design and fabrication process, small size, zero coding loss and low cost. We demonstrate the superior correlation properties of IPPC over existing codes, address the design considerations, and evaluate its performance for a PON monitoring system via the average signal-to-interference ratio (SIR).