Fiber Distribution Hub Optical Port Mapping With Passive Activity Indicators
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Solution Overview
Problem
Service technicians face challenges in identifying active optical connections in a fiber distribution hub (FDH) of a passive optical network (PON), leading to inefficiencies and potential service disruptions due to the lack of real-time monitoring systems.
Innovation Solution
The implementation of passive optical activity indicators in optical couplers within the FDH, which visually indicate the status of optical connections using light patterns, combined with image sensors and computing systems to map and manage these connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If service technicians manually disconnect optical fibers and use light meters to determine connection status, then they can identify active connections, but the process becomes time-consuming and reduces technician efficiency
Solution Approach 1:
The optical coupler automatically provides connection status information through visual indicators without requiring technician intervention with light meters. The system serves itself by displaying which ports are active through LED indicators visible at the bulkhead, eliminating the need for manual testing and significantly improving technician productivity while maintaining accurate connection status detection
Solution Approach 2:
The patent introduces an intermediary visual indication system (LED indicators on passive optical activity indicators) that mediates between the optical connection status and the technician. Instead of directly measuring optical signals with expensive equipment, the intermediary visual indicators provide immediate information about connection status, resolving the contradiction between accurate measurement and efficient operation
2Productivity
If service technicians attempt to repair services by connecting optical fibers to working optical couplers without knowing their status, then repair attempts can be made quickly, but service disruptions may occur due to incorrect connections
Solution Approach 1:
The patent implements feedback by providing real-time visual information about the status of each optical coupler port through LED indicators. Technicians can see which ports are active and which are inactive before making connections, ensuring they connect to the correct ports. This feedback mechanism maintains service reliability while allowing quick repair attempts, as technicians have immediate information to guide their actions without trial-and-error connections
Solution Approach 2:
The visual indicators provide preliminary information about port status before technicians make connection decisions. By knowing in advance which ports are active and which are available, technicians can plan their repair actions beforehand rather than making random connections. This preliminary knowledge ensures reliable connections are made to the correct ports while maintaining fast repair response times
3Device complexity
If no visual indication system is provided for optical coupler ports, then the system remains simple and cost-effective, but it becomes increasingly difficult to identify active and available ports over time
Solution Approach 1:
The patent uses color changes in LED indicators to provide visual status information about optical coupler ports. Different colors or illumination states indicate different port statuses (active, inactive, available). This simple visual coding system maintains device simplicity while dramatically improving ease of operation, as technicians can quickly identify port status at a glance without complex interfaces or additional equipment
Solution Approach 2:
The patent introduces an intermediary visual indication layer between the optical connections and the technician. The passive optical activity indicators with LED indicators serve as a simple mediator that translates internal connection status into visible information. This intermediary system maintains overall system simplicity while solving the port identification problem, as it adds only visual indicators rather than complex monitoring or control systems
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
Reduces inadvertent disconnections, conserves resources, and enhances technician efficiency by providing real-time visibility into active connections, thereby reducing labor costs and customer frustration.
Implementation Method 1
a respective passive optical activity indicator constructed from a passive light transmissive material, wherein first light propagating in the respective first optical fiber when the first optical fiber is received and second light propagating in the respective second optical fiber when the second optical fiber is received illuminate the respective passive optical activity indicator
Data Source
Figure 1
Figure 2A~2B
Figure 2C~2D
AI summary
Systems and methods for collecting information regarding optical connections in an FDH are disclosed. An example FDH includes: a bulkhead having a plurality of passive optical couplers, each of the plurality of passive optical couplers having a respective first port adapted to receive an end of a respective first optical fiber, a respective second port adapted to receive an end of a respective second optical fiber, and a respective passive optical activity indicator configured to expose (i) a portion of first light propagating in the respective first optical fiber when the first optical fiber is received in the first port, and (ii) a portion of second light propagating in the respective second optical fiber when the second optical fiber is received in the second port; and an image sensor configured to capture one or more images of the respective passive optical activity indicators of the plurality of passive optical couplers.