Carrier Leakage Suppression and Power Difference Equalization for TFDMA Coherent PON

2026-08-08

AI Summary

This work addresses the challenges of carrier leakage, inter-user power disparity, and semiconductor optical amplifier (SOA)-induced nonlinear distortions in TFDMA coherent passive optical networks. For the first time, the SOA is leveraged not only to suppress carrier leakage and equalize multi-user power levels but also in conjunction with a tailored digital signal processing algorithm designed specifically for nonlinear compensation. The proposed approach effectively mitigates carrier leakage, balances power variations among users, and significantly alleviates the performance degradation caused by SOA nonlinearities. By simultaneously tackling these critical impairments, the method offers substantial improvements in system stability and transmission quality, representing a notable advancement in the design and optimization of coherent passive optical access networks.

Abstract

In this invited talk, we demonstrate the carrier leakage suppression and power difference equalization based on semiconductor optical amplifier (SOA) for TFDMA-based coherent PON, and propose a nonlinearity compensation algorithm to deal with SOA-induced nonlinear distortion.

Problem

• carrier leakage
• power difference
• TFDMA
• coherent PON

Innovation

• carrier leakage suppression
• power difference equalization
• semiconductor optical amplifier
• nonlinearity compensation
• coherent PON