Optical Control Apparatus Route Setting for Monitoring Light Reflection
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Solution Overview
Problem
In long distance optical transmission systems, it is challenging to monitor the state of an optical transmission path while minimizing the usage band of monitoring light, as using the same wavelength band for both uplink and downlink lines can lead to multiple reflections, causing oscillation and confusion in monitoring data.
Innovation Solution
An optical control apparatus with first and second connection units connected to the optical transmission paths and a route setting unit that complements the optical routes to either conductive or non-conductive states, allowing monitoring light to loop back through the second path, thereby avoiding multiple reflections by switching the routes to prevent signal return in a multiple manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If monitoring light in the same wavelength band is used for both uplink and downlink lines, then the usage band of monitoring light is minimized, but multiple reflections occur causing oscillation and confusion in monitoring data
Solution Approach 1:
The patent divides the optical transmission path into separate first and second optical transmission paths, each with dedicated connection units. The first connection unit handles the first path while the second connection unit handles the second path, segmenting the monitoring functions to prevent multiple reflections even when using the same wavelength band for monitoring light in both paths.
Solution Approach 2:
The patent combines multiple functions into integrated connection units that can operate in different states. Each connection unit can function as a through connection, a loopback connection, or a blocking connection, allowing the system to use the same wavelength band for monitoring while preventing harmful multiple reflections through coordinated state management.
2Measurement precision
If wavelength selective reflection devices are used for uplink and downlink monitoring, then monitoring is enabled, but the reflection center wavelengths must be different to avoid multiple reflections
Solution Approach 1:
The patent implements dynamic route setting that can change the state of connection units based on monitoring requirements. The route setting unit can complementarily set optical routes to conductive or non-conductive states, allowing the system to adaptively manage wavelength usage and prevent multiple reflections without requiring fixed different wavelengths for uplink and downlink monitoring.
Solution Approach 2:
The patent changes the operational parameters of connection units between different states (through, loopback, blocking) rather than changing physical wavelength parameters. This allows the system to maintain monitoring capability while avoiding multiple reflections through state management rather than wavelength differentiation.
3Measurement precision
If loopback state is set for monitoring, then monitoring light returns through the second path, but route configuration must be carefully controlled to prevent signal oscillation
Solution Approach 1:
The patent implements a feedback mechanism where the route setting unit monitors the state of connection units and complementarily adjusts optical routes. When monitoring is required, the system sets appropriate loopback states and receives feedback about path conditions, allowing accurate path state detection while automatically managing route configuration complexity.
Solution Approach 2:
The patent creates asymmetric route configurations where the first and second optical paths have different connection unit states. The first connection unit and second connection unit are configured in complementary states, allowing monitoring light to return through the second path while preventing oscillation through asymmetric route management.
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 approach enables effective monitoring of the optical transmission path while minimizing the usage band of monitoring light, preventing signal oscillation and data confusion, and ensuring accurate path state assessment.
Implementation Method 1
a wavelength selective reflection device for an uplink line, and a wavelength selective reflection device for a downlink line
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
An optical control apparatus includes a first connection unit to be connected to a first optical transmission path and a second optical transmission path, a second connection unit to be connected to the first optical transmission path and the second optical transmission path, and a route setting unit that complementarily sets a first optical route in the first connection unit, and a second optical route in the second connection unit, to either of a conductive state and a non-conductive state.