Burst Optical Relay Device for Double-Ring Network Overshoot Suppression
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Solution Overview
Problem
In a double-ring optical TDM network, failures in optical transmission lines lead to unsuppressed overshoot of burst optical signals, preventing proper communication when the configuration is switched to an auxiliary mode, as the clamp beam cannot reach the EDFAs, disrupting amplification and signal transmission.
Innovation Solution
A burst beam relay device with an optical signal return unit and detection unit that sends and receives a continuous-wave clamp beam across two optical transmission lines, and upon detecting a disconnection, returns the clamp beam from the opposite line to suppress overshoot and ensure signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the optical transmission line fails in a double-ring configuration, then the clamp beam cannot reach the EDFAs, but the burst optical signal transmission is disrupted with unsuppressed overshoot
Solution Approach 1:
The patent introduces an optical circulator as an intermediary device that enables the clamp beam to reach the EDFA through an alternative path when the primary transmission line fails. The circulator acts as a mediator that redirects the optical signal flow, allowing the clamp beam to traverse through the other optical transmission line and reach the EDFA via the optical amplifier, thereby maintaining overshoot suppression functionality even during line failures
Solution Approach 2:
The system dynamically switches between different transmission paths based on the operational status of the optical transmission lines. When a line failure is detected, the system automatically reroutes the clamp beam through the alternative line using the optical circulator, enabling adaptive response to failure conditions and maintaining reliable signal transmission with suppressed overshoot
2Adaptability or versatility
If the configuration is switched to auxiliary mode upon failure detection, then communication should be maintained, but the clamp beam path is disrupted preventing proper amplification
Solution Approach 1:
The optical circulator serves as a mediator that enables the clamp beam to reach the EDFA through an alternative path when the primary transmission line fails. The circulator acts as a mediator that redirects the optical signal flow, allowing the clamp beam to traverse through the other optical transmission line and reach the EDFA via the optical amplifier, thereby maintaining overshoot suppression functionality even during line failures
Solution Approach 2:
The system dynamically switches between different transmission paths based on the operational status of the optical transmission lines. When a line failure is detected, the system automatically reroutes the clamp beam through the alternative line using the optical circulator, enabling adaptive response to failure conditions and maintaining reliable signal transmission with suppressed overshoot
3Object-affected harmful factors
If each node uses independent clamp beam sources, then overshoot can be suppressed locally, but device complexity and resource requirements increase
Solution Approach 1:
The patent implements a universal clamp beam source at the representative node that serves all nodes in the network through the double-ring optical transmission structure. This single clamp beam source can reach any EDFA in the network by traveling through the optical rings, eliminating the need for independent clamp beam sources at each node while maintaining overshoot suppression functionality throughout the entire network
Solution Approach 2:
The invention merges multiple independent clamp beam sources into a single centralized source that serves the entire network. By combining the functionality of multiple sources into one, the system reduces device complexity and resource requirements while maintaining the essential overshoot suppression capability across all network nodes through the shared optical transmission infrastructure
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 the suppression of overshoot and maintains communication by relaying burst optical signals across the double-ring configuration even when one optical transmission line fails, ensuring continuous signal transmission with reduced resource requirements.
Implementation Method 1
an EDFA (Erbium Doped optical Fiber Amplifier) as an optical amplifier
Implementation Method 2
EDFAs 16a and 16b are connected to the respective input sides of the optical couplers 14c and 14d
Implementation Method 3
A plurality of optical couplers 14a, 14b, 14c, and 14d are connected to the outer optical transmission line 11 at predetermined intervals
Implementation Method 4
optical fibers are laid in a double-ring shape, forming a double-ring configuration of an outer optical transmission line 11
Data Source
AI summary
A relay device (39bA) includes an optical signal return unit (50a) and a detection unit (55b). When an optical signal input via one optical transmission line (41) of two optical transmission lines (41 and 42) with a double-ring configuration has not been detected for a predetermined time or longer, the detection unit (55b) outputs a disconnection signal of the optical transmission line. The optical signal return unit (50a) is configured to, only when there is an input of the disconnection signal, return to one of the optical transmission lines (41) only a clamp beam that has been sent from a representative node via the other optical transmission line (42) in the direction opposite to the optical signal input via the one of the optical transmission lines (41).