Long-Distance Box for Multi-PON Coexistence via Segmented Optical Paths
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Solution Overview
Problem
Existing long-distance boxes are designed for single-PON systems and cannot effectively manage the coexistence of multiple different Passive Optical Networks (PON) systems sharing a common Optical Distribution Network (ODN), leading to inefficiencies and increased costs due to the need for separate amplification and wavelength management for each system.
Innovation Solution
A long-distance box with a wavelength division multiplexing filter and long-distance amplification boxes, configured to split and amplify uplink/downlink lights from different PON systems through separate optical paths, allowing for the coexistence of multiple PON systems by using a first and second wavelength division multiplexing filter to manage and couple lights from different PON systems, ensuring reliable transmission and amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-PON system uses a traditional long-distance box, then the system structure is simple and cost is reduced, but it cannot support multiple PON systems coexisting in the same ODN
Solution Approach 1:
The long-distance box is segmented into multiple independent optical paths, with each path dedicated to a specific PON system. Each optical path includes its own wavelength division multiplexing filter and long-distance amplification box, allowing multiple PON systems to coexist without interference while maintaining simple individual path structures
Solution Approach 2:
The long-distance box is designed with multi-functionality to support multiple PON systems (e.g., GPON and XG-PON) simultaneously. The device incorporates multiple wavelength division multiplexing filters and amplification boxes that can handle different wavelength ranges, enabling a single device to serve multiple PON systems sharing the same ODN
2Reliability
If separate long-distance amplification boxes are used for each PON system, then each system gets dedicated amplification, but the overall device complexity and cost increase
Solution Approach 1:
The amplification function is segmented into separate optical paths, with each path having its own long-distance amplification box dedicated to a specific PON system. This ensures that each system receives dedicated amplification without interfering with others, improving reliability while keeping each individual amplification path simple
Solution Approach 2:
Multiple separate long-distance amplification boxes for different PON systems are merged into a single integrated long-distance box device. The device combines multiple amplification functions in one unit, reducing overall device complexity and cost while maintaining the dedicated amplification capability for each PON system through separate optical paths
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 enables efficient and reliable processing of uplink/downlink lights from multiple PON systems, reducing the need for extensive modifications and saving time and cost by organically combining existing long-distance amplification boxes, thereby enhancing system reliability and efficiency.
Implementation Method 1
a first wavelength division multiplexing filter configured to split downlink lights and couple uplink lights from different PON systems
Implementation Method 2
the uplink/downlink light from the first PON system is transmitted through the first optical path and amplified by the first long-distance amplification box
Data Source
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AI summary
The disclosure provides a long-distance box and a method for processing uplink/downlink light thereof. The method includes that: the uplink/downlink light (uplink light and downlink light) from different PON systems is split, and the uplink/downlink light from different PON systems is transmitted through different optical paths; and the uplink/downlink light from different PON systems is processed by long-distance boxes belonging to corresponding systems in different optical paths, and then output to the OLTs/ONUs of respective systems. By means of the method provided in the disclosure, a simple and reliable solution is provided for operators to solve the long-distance problem caused by the coexistence of multiple PON systems; furthermore, in the disclosure, modification for the system is slightest, reliability of the system is highest, and an efficiency of the system is highest, so that time and cost are saved for the operators.