Inter/Intra-ODN capable TWDM PON architecture for efficient OLT resources sharing over different optical networks

Abstract

The growing multimedia, bandwidth-hungry applications, and real-time services drive tremendous expansion in the communication industry and force service providers to look for more effective ways to provide reliable, energy-efficient, cost-efficient, high-speed, and low-latency data transmission. In this paper, the authors proposed a new energy-efficient and flexible architecture such as a Time and Wavelength Division Multiplexed Passive Optical Network (TWDM-PON) that can enable an Optical Line Terminal (OLT) network sharing of available resources. The proposed architecture can broadcast and/or transmit Point-to-Point (P2P) data for downstream (DS) transmission. The architecture offers low latency direct and dedicated Optical Network Unit (ONU) connections and exhibits the inter-ONU transmission that permits data exchange between two ONUs housed within an Optical Distribution Network (intra-ODN-inter-ONU). The proposed architecture can also send the inter-ONU signals between the ONUs located over different ODNs (inter-ODN-inter-ONU) in the same Optical Private Network (OPN). By implementing the intra-ODN-inter-ONU and inter-ODN-inter-ONU transmissions, the proposed architecture can enhance security and reduce the transmission latency significantly. To the extent of the author’s information, dedicated inter-ODN-inter-ONU transmission has not been addressed in any of the literature till date.

The proposed architecture also supports, dedicated inter-ODN broadcasting within an OPN for transmitting the same data among multiple ONUs and utilizing the OLT resources optimally. Due to the dynamic recourse allocation at OLT, the proposed architecture provides up to 3-X service reliability and can operate on as minimum as one-third of network resources during low traffic load conditions. Furthermore, through the simulation of the proposed architecture, the Bit Error Rate (BER) performance is in the range of 10^-9 to 10^-12, under various inter-ONU connections. The proposed architecture also reduces upto maximum of 75% of the energy consumption. The proposed architecture would be suitable for enabling a variety of high-speed, real-time internet-based applications for mixed-use building customers and smart communities.