Bidirectional Loopback Amplifier to Reduce Optical Sensing Loss
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Solution Overview
Problem
Conventional optical communication systems require separate amplifiers for bidirectional sensing signals, leading to structural complexity, increased cost, and signal loss, particularly in submarine cables.
Innovation Solution
A bidirectional amplification device that integrates active gain medium components and circulators to amplify optical sensing signals in both directions, reducing the need for separate amplifiers and minimizing hardware requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate amplifiers are used for bidirectional sensing signals, then amplification of sensing signals in both directions is achieved, but structural complexity and device complexity increase
Solution Approach 1:
The patent combines two separate amplifiers into a single bidirectional amplifier that can amplify sensing signals in both directions simultaneously. This merging reduces the number of discrete components while maintaining the amplification capability for bidirectional optical sensing signals, thereby reducing structural complexity without sacrificing reliability.
Solution Approach 2:
The bidirectional amplifier is designed to perform multiple functions: it can amplify sensing signals traveling in both forward and reverse directions, and it can operate with different pump power configurations (single-ended or dual-ended pumping). This multi-functionality eliminates the need for separate amplifiers for each direction, reducing overall device complexity.
2Reliability
If separate amplifiers are used for bidirectional sensing signals, then amplification of sensing signals is achieved, but cost increases
Solution Approach 1:
By merging two separate amplifier units into one bidirectional amplifier, the patent reduces the total number of components that need to be manufactured, assembled, and tested. This consolidation directly reduces manufacturing costs while maintaining the ability to amplify bidirectional sensing signals effectively.
3Reliability
If separate amplifiers are used for bidirectional sensing signals, then amplification of sensing signals is achieved, but signal loss increases
Solution Approach 1:
The bidirectional amplifier design allows for coherent combination of pumping schemes (single-ended or dual-ended) that optimizes signal amplification while minimizing loss. By integrating both amplification paths in a single device with coordinated pumping, the system reduces signal loss compared to separate amplifiers that would each introduce independent insertion losses and mismatches.
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 provides efficient amplification of optical sensing signals in both directions, reducing structural complexity and signal loss, while maintaining effective monitoring of cable conditions.
Implementation Method 1
an active gain medium optical component configured to amplify at least one of: the first reflected optical sensing signal, the second reflected optical sensing signal, the first optical sensing signal, the second optical sensing signal
Implementation Method 2
The bidirectional amplification device may include at least one of: one or more isolators, one or more wavelength division multiplexing (WDM) optical components, one or more circulators
Implementation Method 3
One or more isolators may be configured to isolate one or more pumps from one or more optical signals being backscattered from the active gain medium optical component
Implementation Method 4
one or more wavelength division multiplexing (WDM) optical components
Data Source
AI summary
An apparatus and a method for transmission of optical signals. The apparatus includes a bidirectional amplification device communicatively coupled between a first communication terminal and a second communication terminal. The first and second communication terminals are communicatively coupled using an optical communication link. The bidirectional amplification device is configured to transmit and amplify one or more optical sensing signals transmitted in either direction between the first communication terminal and the second communication terminal. The optical sensing signals indicate a status of one or more portions of the optical communication link.