OTDR Receive Device Connectivity Feedback
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Solution Overview
Problem
In optical fiber testing using single-ended OTDR approaches, users face challenges with unreliable measurements due to the need for constant communication to coordinate actions, leading to increased transition time and inefficiency, especially in high-volume testing environments like data centers.
Innovation Solution
An OTDR receive device with a light source and status indicator allows for detection of connectivity and measurement status, enabling reliable OTDR measurements without the need for continuous user communication, as it notifies users of connectivity and measurement completion through visual, auditory, or display indicators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If single-ended OTDR approach is used to reduce device complexity, then ease of operation is improved, but reliability deteriorates due to lack of automated connectivity detection
Solution Approach 1:
The patent implements automated feedback mechanisms where the OTDR unit continuously monitors for the presence of the receive device and receives status signals indicating connectivity state and measurement completion. This automatic feedback loop eliminates the need for manual communication between users while ensuring measurements are only performed when properly connected, thereby maintaining reliability without increasing system complexity.
2Reliability
If manual coordination between users is required to ensure proper connection, then measurement reliability is improved, but productivity deteriorates due to increased transition time
Solution Approach 1:
The system performs self-service through automated presence detection and status monitoring. The OTDR unit automatically detects when the receive device is connected and monitors measurement status without requiring user intervention or communication. This self-service capability maintains measurement reliability while eliminating the transition time delays caused by manual coordination, thereby improving productivity in high-volume testing environments.
3Productivity
If automated presence detection is implemented to improve productivity, then productivity is improved, but device complexity worsens
Solution Approach 1:
The patent leverages the existing optical fiber link to serve multiple functions: it simultaneously carries both the OTDR measurement signals and the presence detection/status communication signals. By making the optical link multi-functional, the system achieves automated presence detection and status monitoring without adding separate communication hardware or increasing overall system complexity, thereby improving productivity while maintaining simplicity.
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 ensures reliable and efficient OTDR measurements by eliminating the need for constant user communication, reducing transition time and improving coordination between users, thereby enhancing the testing process in high-volume environments.
Implementation Method 1
a light source connectable toward the optical fiber link under test to transmit a presence signal that is detectable by the OTDR unit
Implementation Method 2
OTDR is a diagnostic technique where light pulses are launched in an optical fiber link and the returning light, arising from backscattering and reflections along the fiber link, is detected and analyzed
Implementation Method 3
OTDR is a diagnostic technique where light pulses are launched in an optical fiber link and the returning light, arising from backscattering and reflections along the fiber link, is detected and analyzed
Implementation Method 4
a status detector coupled to the optical fiber path to receive a status signal propagating along the optical fiber link under test and determine a current status state therefrom
Data Source
AI summary
There is provided an OTDR receive device and an OTDR system comprising an OTDR receive device wherein the OTDR unit and the OTDR receive device are to be connected at opposite ends of an optical fiber link under test. The OTDR receive device comprises means for the OTDR system to detect an established connectivity between the OTDR unit and the OTDR receive device via the optical fiber link under test and a status indicator to notify a user of the receive device of the connectivity status and optionally an OTDR measurement status. Connectivity detection allows to check for continuity between the OTDR unit and the OTDR receive device before launching an OTDR measurement. A user of the OTDR unit does not need to communicate with the user of the OTDR receive device to know when to start the acquisition.