![]() ![]() ![]() To prevent possible threats to public safety and economic loss from chemical leakage accidents, novel chemical sensing techniques for regular monitoring and leakage detection have been developed for various fields. This includes wavelength division multiplexing (WDM), TDM over WDM or long-reach PONs intended to extend the reach from 20 up to 100 km distances and beyond. Finally, we outline open issues and future research perspectives in physical layer PON monitoring that may target higher performance, lower cost, or scalability to next generation PON architectures. Third, we make a detailed classification of all these approaches and qualitatively compare characteristics in a list of performance parameters and aspects. In our survey we include the approaches already available in the market even with limited performance and those still in research. Second, we make an exhaustive review of the monitoring techniques and systems for TDM-PON, mostly proposed within the last five years. ![]() First, in this paper, we present the motivations, requirements and challenges of TDM-PON monitoring. This monitoring system is necessary during the fiber installation, final network installation testing, regular operation of the network, and for fault localization. PON operators need a monitoring system for the physical layer to guarantee high service quality. Time division multiplexed - Passive optical network (TDM-PON) is a fast emerging architecture that uses only passive components between the customer and the central office. In order to enable new services that require high data rates over longer distances, the optical fiber substitutes the copper cable step by step in the access network area. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
December 2022
Categories |