Bidirectional Loopback Amplifier for Dual-Direction Optical Sensing
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Solution Overview
Problem
Conventional optical communication systems require separate amplifiers for amplifying sensing signals in opposite directions, leading to structural complexity, increased cost, and signal loss, particularly in submarine cables.
Innovation Solution
A bidirectional amplification device is introduced to transmit and amplify optical sensing signals in both directions using a single device, incorporating an active gain medium and circulators to manage signal flow, reducing the need for separate amplifiers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate amplifiers are used for each direction, then sensing signals can be amplified in both directions, but structural complexity and device complexity increase
Solution Approach 1:
The patent combines two separate unidirectional amplifiers into a single bidirectional amplification device. The device includes a first amplifier for amplifying sensing signals in a first direction and a second amplifier for amplifying sensing signals in a second direction, both integrated within one housing. This merging reduces structural complexity while maintaining the ability to amplify signals in both directions.
Solution Approach 2:
The bidirectional amplification device performs multiple functions within a single device: it amplifies sensing signals in both directions, houses multiple amplifiers (first and second), and provides a unified interface for bidirectional optical communication. This multi-functionality eliminates the need for separate amplifier devices for each direction.
2Reliability
If separate amplifiers are used for each direction, then sensing signals can be amplified independently, but hardware requirements and power requirements increase
Solution Approach 1:
The patent merges multiple amplifier functions into a single integrated device housing. Instead of requiring separate physical amplifier units for each direction, the device houses both the first amplifier and second amplifier within one unit, reducing hardware quantity while maintaining independent amplification capability for each direction.
3Ease of operation
If separate amplifiers are used for each direction, then directional signal control is improved, but signal loss increases
Solution Approach 1:
The patent introduces directional coupling mechanisms as intermediaries between the amplifiers and the optical paths. These couplings ensure that the first amplifier only amplifies signals in the first direction and the second amplifier only amplifies signals in the second direction, preventing signal leakage and reducing unnecessary signal loss while maintaining precise directional control.
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 bidirectional amplification device simplifies the system architecture, reduces hardware and power requirements, and minimizes signal loss by efficiently amplifying sensing signals in both directions, enhancing the reliability of optical communication systems.
Implementation Method 1
The bidirectional amplification device may include an active gain medium optical component. The active gain medium optical component may be 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 be communicatively coupled to one or more circulators. One or more circulators may be configured to direct transmission of at least one of: one or more optical sensing signals, one or more optical sensing signals amplified by the bidirectional amplification device
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
Data Source
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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.