Optical Communication Device Selective Line Switching
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Solution Overview
Problem
In WDM-PON networks, when an error occurs on one channel card, the entire optical line needs to be switched to a backup line, disrupting communication for other normal channel cards, leading to inconvenience and potential network downtime.
Innovation Solution
An optical communication device with channel cards and a controller that can individually switch optical lines for specific optical communication modules by monitoring the state of each line and switching signals between primary and secondary MUX/DEMUX connections, ensuring only affected modules are rerouted, while maintaining communication for unaffected ones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the entire optical line is switched to a sub optical line when an error occurs in one channel card, then the reliability of the affected channel card is improved, but the productivity of other normal channel cards deteriorates due to unnecessary switching
Solution Approach 1:
The patent divides the optical line switching control into independent segments for each channel card. Instead of switching the entire optical line when one channel card fails, the system performs segmented switching where only the specific channel card experiencing the error is redirected to the sub optical line, while other channel cards continue to operate on the main optical line without interruption.
2Reliability
If the entire optical line is switched to a sub optical line when an error occurs, then the reliability is improved, but the device complexity increases due to additional switching control mechanisms
Solution Approach 1:
The patent implements preliminary action by pre-configuring multiple MUX/DEMUX units and establishing backup sub optical lines in advance. When an error occurs in a channel card, the system can immediately switch to the pre-prepared sub optical line without requiring complex real-time decision-making or reconfiguration, thereby reducing the operational complexity of the switching control mechanism.
3Reliability
If the entire optical line is switched to a sub optical line, then the reliability of the affected channel card is improved, but the loss of time occurs due to network disruption for other channel cards
Solution Approach 1:
The patent applies local quality by implementing localized switching control that affects only the specific channel card experiencing the error. The switching decision and execution are confined to the local scope of the affected channel card's optical path, allowing other channel cards to maintain their normal communication on the main optical line without any time loss or disruption.
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
Enables selective switching of optical lines for faulty modules, minimizing network disruptions and maintaining communication for other modules, thus improving network reliability and efficiency.
Implementation Method 1
an optical transmission/reception module configured to convert the first signal into the first optical signal of a preset wavelength and output the first optical signal
Data Source
AI summary
Provided is an optical communication device including: a first channel card configured to convert an input first signal into a first optical signal and output the first optical signal to any one of a first MUX/DEMUX connected to a first optical line and a second MUX/DEMUX connected to a second optical line; a second channel card configured to convert an input second signal into a second optical signal and output the second optical signal to any one of the first MUX/DEMUX and the second MUX/DEMUX; and a controller configured to monitor states of the first optical line and the second optical line to determine a MUX/DEMUX from which the first optical signal and the second optical signal are respectively output, from among the first MUX/DEMUX and the second MUX/DEMUX.