Optical Switch Fault Detection Using Reflected Probe Signals
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Solution Overview
Problem
Existing fault detection methods for optical switching apparatuses in optical transport networks suffer from low efficiency and accuracy, particularly when manually checking for faults in a network device with a large number of integrated optical switching apparatuses.
Innovation Solution
A fault detection method involving the transmission of probe optical signals along target paths to detect reflected optical signals, analyzing reflection spectra to identify faulty optical switching apparatuses, and determining the specific location of faults within the apparatuses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual fault checking is performed on optical switching apparatuses, then the network can identify faulty components, but the check efficiency and accuracy are low
Solution Approach 1:
The optical switching apparatus performs self-diagnosis by automatically sending probe optical signals through its own internal optical paths and analyzing the reflected signals to identify faults, eliminating the need for manual external checking and thereby improving both accuracy and efficiency
Solution Approach 2:
The system uses reflected optical signals as feedback information to automatically determine the status of optical switching apparatuses. By analyzing the reflection spectra and comparing them with reference values, the system can automatically identify faults without manual intervention, significantly improving detection efficiency and accuracy
2Productivity
If a large quantity of optical switching apparatuses are integrated into a network device, then the transmission capacity increases, but the complexity of fault detection increases
Solution Approach 1:
The fault detection method segments the complex network device into multiple independent optical paths, with each path containing specific optical switching apparatuses. By sending probe signals through each segmented path independently and analyzing reflected signals separately, the system can efficiently detect faults in individual apparatuses without being overwhelmed by the overall system complexity
Solution Approach 2:
The probe optical signal serves multiple functions: it transmits through the optical switching apparatuses, reflects off their components, and carries diagnostic information about their status. This universal use of a single signal type simplifies the detection mechanism despite the large number of apparatuses being monitored
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 method enables efficient and accurate fault detection in optical switching apparatuses, even in large network devices, by automating the process and reducing noise interference, allowing precise identification of faulty components.
Implementation Method 1
receiving a plurality of reflected optical signals from the target path, where the plurality of reflected optical signals are formed after the probe optical signal is reflected by the target path
Data Source
AI summary
The technology of this application relates to a fault detection method for an optical switching apparatus, a network device, and a system, to improve accuracy and efficiency of detecting whether the optical switching apparatus is faulty. The method includes sending a probe optical signal to a target path, where the probe optical signal is to be transmitted along the target path, and the target path includes at least one optical switching apparatus, receiving a plurality of reflected optical signals from the target path, where the plurality of reflected optical signals are formed after the probe optical signal is reflected by the target path, determining a target reflected optical signal in the plurality of reflected optical signals, where the target reflected optical signal is a reflected optical signal reflected by the optical switching apparatus, and determining, based on the target reflected optical signal, whether the optical switching apparatus is faulty.