Optical Testing Device Automated Reference Signal Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for testing fiber optic cables and networks require multiple manual steps and instruments, making them time-consuming and cumbersome, especially for long networks, and are less accurate due to reliance on fiber backscatter coefficients and the need for multiple personnel.
Innovation Solution
A testing device with a test port, light source, measurement element, and controller that automatically initiates testing by measuring an unloaded reference signal and detecting the optical system's signal, allowing for automated connection and disconnection, reducing manual intervention and improving accuracy by using a single device for loss and event tracing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual testing steps are used with separate light source and power meter, then loss measurement can be performed, but the testing process becomes time-consuming and requires multiple personnel
Solution Approach 1:
The patent combines the light source, power meter, and OTDR into a single integrated testing device. This merging eliminates the need for multiple separate instruments and personnel, while maintaining the accuracy of loss measurements through automated reference signal storage and comparison mechanisms.
Solution Approach 2:
The device performs preliminary actions by automatically storing reference signals from the light source and power meter before actual testing begins. This preliminary calibration and signal storage enables rapid subsequent measurements without requiring manual setup for each test, significantly reducing testing time while preserving measurement accuracy.
2Ease of operation
If manual connection and disconnection of testing device is performed, then testing can be conducted, but the process becomes cumbersome and time-consuming
Solution Approach 1:
The testing device performs self-service through automated connection detection and test initiation. The system automatically detects when an optical system is connected, retrieves stored reference signals, and initiates testing without requiring manual intervention for each connection event, greatly simplifying operation and reducing setup time.
Solution Approach 2:
The device uses feedback mechanisms to automatically detect connection status by monitoring signals at the test port. This feedback enables the system to autonomously determine when testing should begin or end, eliminating the need for manual connection management and reducing operational complexity.
3Adaptability or versatility
If OTDR uses fiber backscatter coefficients for loss measurement, then event tracing can be performed, but measurement accuracy is reduced
Solution Approach 1:
The system performs preliminary action by storing accurate reference signals from the light source and power meter before testing. These pre-stored reference signals provide a baseline for comparing against test measurements, enabling accurate loss calculation without relying on approximate fiber backscatter coefficients, thus maintaining both versatility and precision.
Solution Approach 2:
The patent introduces an intermediary mechanism using stored reference signals as a mediator between the test setup and measurement analysis. This intermediary reference data enables accurate loss measurement by providing a known baseline for comparison, eliminating the need to rely on less accurate backscatter coefficient calculations while preserving OTDR's event tracing capabilities.
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
The solution enables faster, more accurate testing of optical systems by automating the testing process, reducing the need for multiple instruments and personnel, and improving measurement accuracy by eliminating reliance on fiber backscatter coefficients.
Implementation Method 1
Light is transmitted from the light source through the test cables and fiber optic cable to the power meter
Implementation Method 2
a power meter... measures the power of received light
Implementation Method 3
The OTDR records reflected light as a function of time, called an OTDR trace or simply a trace
Implementation Method 4
transmits pulsed light signals along the fiber. The OTDR records reflected light as a function of time
Data Source
AI summary
A testing device includes a test port, a light source, a measurement element, and a controller. A method of testing an optical system with the testing device includes, and/or the testing device is configured for, measuring an unloaded reference signal when the testing device is not connected to the optical system and storing the unloaded reference signal in a memory of the testing device. The method and/or configuration also includes detecting a signal from the optical system after storing the unloaded reference signal. Based on the detected signal, it is determined that the optical system is connected to a test port of the testing device. A test of the optical system with the testing device is automatically initiated in response to determining that the optical system is connected to the test port of the testing device.