An Efficient Multi-wavelength Group-Based Fault Detection Scheme in PON System

We present a fault detection scheme with the multi-wavelength grouping coding (MWGC) technology to achieve the signal detection problem in large-capacity PON system. By constructing the simulation, this scheme is verified. And, the results show that, compared to the common method, our scheme can significantly reduce the interference between equidistant users and has good SNR performance.