Arrayed Media Converter for FTTC Bandwidth
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Solution Overview
Problem
Current Fiber to the Curb (FTTC) architectures face challenges in providing higher bandwidths at the cost points of FTTC while maintaining the lower deployment costs of existing copper-based systems, as they are limited by the decreasing data rates with increasing copper pair lengths.
Innovation Solution
The implementation of an arrayed media converter that converts WDM-PON optical signals into electrical signals for transmission over copper twisted pairs, offering a cost-effective, high-bandwidth, and scalable solution by integrating WDM-PON Optical Network Units (ONUs) and a passive multiplexer to manage data transmission between optical and electrical domains.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If copper cable facilities are used for last mile transmission, then deployment cost is reduced, but achievable data rate decreases as cable length increases
Solution Approach 1:
The patent introduces an optical intermediary (optical network unit and WDM-PON system) between the service provider and the customer premises. The optical unit converts optical signals from the fiber backbone to electrical signals for transmission over copper twisted pairs, enabling the copper infrastructure to carry higher data rates that would otherwise require full fiber deployment to the premises.
2Productivity
If fiber optic facilities are used for last mile transmission, then data rate is improved, but deployment cost increases
Solution Approach 1:
The patent segments the access network into distinct sections: a fiber-optic backbone (feeder and distribution sections) and a copper access section (drop cable to customer premises). This segmentation allows the expensive fiber infrastructure to be deployed only where absolutely necessary (to the curb or node), while leveraging existing copper infrastructure for the final connection, thereby reducing overall deployment costs while maintaining high data rates.
3Area of stationary object
If copper pair length is increased to extend service area, then coverage is improved, but data rate decreases
Solution Approach 1:
The optical network unit acts as a mediator that regenerates signals at intermediate points along the copper distribution network. By placing optical units at strategic locations (such as at the curb or node), the system can extend coverage over longer distances while maintaining high data rates, as the optical-to-electrical conversion occurs at the endpoint rather than degrading over the entire copper length.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a robust, cost-effective FTTC system with low power consumption, low latency, and high scalability, enabling higher bandwidths comparable to FTTH/WDM-PON architectures while maintaining the economic benefits of copper-based infrastructure.
Implementation Method 1
WDM-PON architectures share a fiber for multiple customer premises in the feeder portion of the network
Implementation Method 2
an arrayed media converter that converts WDM-PON optical signals into electrical signals for transmission over copper twisted pairs
Data Source
AI summary
The present disclosure generally pertains to an arrayed media converter (AMC) that has an array of Wavelength Division Multiplexing-Passive Optical Network (WDM-PON) Optical Network Units (ONUs) for terminating an optical channel in the feeder or distribution portion of a telecommunication network. The ONU converts an optical signal from the optical channel into at least one electrical signal for transmission to a customer premises. Thus, the AMC serves as an interface between at least one WDM-PON link and at least one conductive connection, such as a twisted pair. In one exemplary embodiment, the AMC comprises a sealed housing that is environmentally hardened to protect the AMC from environmental conditions, including changes in weather. Such an AMC may be used to provide a robust, cost effective Fiber To The Curb (FTTC) solution, but the AMC may be used at other points within the network, if desired.