Customer Edge Downstream Detection for Automatic Restoration Scheme in FTTH-PON Distribution Network

Abstract

Fiber-to-the-home (FTTH) networks are seen as the most future-proof technology to offer increasing bandwidth to customers. By utilizing passive optical network (PON) technology, they provide flexibility and capability to carry higher bandwidths as compared to the legacy copper-based access network. Optical performance monitoring could potentially enable higher stability, reconfigurability, and flexibility in a self-managed optical network. This paper will describe the specific fiber impairments that affect the quality of service for fiber-to-the-home networks. The impairment needs to be monitored and restored. The proposed solution will utilize a photodiode and optical switch as the main components, can easily be integrated with the ONU through the optical interface, and will be referred to as ‘PROMO’. With this scheme, the protection and restoration mechanisms are archived through the detection and availability of the downstream signal from the OLT. The results show that the received power, BER values, and maximum Q factor are acceptable for both simulation and experimental conditions in the case of normal and protection conditions.

Design and Analysis of an FTTH-GPON in a Residential Area

“…Another standard, the ITU-T Recommendation G.984.1(ITU-T, 2008) describes the use of protection switching. This allows several different types of PON configurations, including redundancy of links and equipment for network protection (Ab-Rahman et al, 2022;Keiser, 2006).…”

“…A lot of design and calculation is necessary to ensure the quality of service and network performance. According to cases reported to the Federal Communication Commission (FCC), more than one-third of service disruptions are due to fiber optic cable problems (Ab-Rahman et al, 2022). Two categories of network failures exist in a Passive Optical Network (PON) system.…”

“…Link failure refers to the fiber disconnection occurring between components. Some detection and system, however, has been developed to automatically switch the leading network to a secondary one during link failure (Ab-Rahman et al, 2022). Therefore, the protection and restoration of an FTTH network must be considered during the design process.…”