Integrated Optical Amplifier Direct Fiber Coupling
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Solution Overview
Problem
Conventional optical amplification systems suffer from non-linear effects, high loss, and complex system structures due to the large number of functional devices and splices, which limit pulse amplification and increase the length of passive fibers, leading to instability and inaccurate output signals.
Innovation Solution
The integration of optical amplification systems with a minimum number of splices and reduced passive fiber length, where active fibers are directly coupled to combiners and isolators, eliminating the need for intermediate passive fibers, thereby reducing non-linearity and increasing integration levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If passive fibers are used to connect functional devices in conventional optical amplification systems, then signal transmission is achieved, but non-linear effects and losses increase
Solution Approach 1:
The patent merges the combiner and active fiber into a directly coupled integrated structure, eliminating intermediate passive fiber connections. This reduces the number of splices and passive components, thereby reducing optical losses and non-linear effects while maintaining signal transmission functionality.
Solution Approach 2:
The patent extracts and removes unnecessary passive fiber segments from the optical path between functional devices. By eliminating these intermediate passive connections, the system reduces non-linear effects and losses associated with long passive fiber lengths while preserving essential signal transmission.
2Device complexity
If a large number of functional devices and splices are used, then optical amplification functionality is achieved, but system complexity and non-linear effects increase
Solution Approach 1:
The patent combines multiple functional devices into an integrated structure where the combiner is directly coupled to the active fiber. This merging reduces the total number of discrete components and splices, thereby improving signal stability and reducing non-linear effects while maintaining amplification functionality.
3Ease of operation
If intermediate passive fibers are used to connect active fibers and combiners, then signal transmission is achieved, but non-linearity and losses increase
Solution Approach 1:
The patent removes intermediate passive fiber segments from the optical path between the combiner and active fiber. This extraction eliminates unnecessary transmission media that cause losses and non-linear effects, while the direct coupling maintains effective signal transmission through reduced interface losses.
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 minimizes non-linearity, reduces system complexity, and enhances the integration level of optical amplification systems, allowing for more compact designs and improved pulse amplification capabilities with reduced losses.
Implementation Method 1
Doped fiber amplifiers (DFAs) are optical amplifiers that use a doped optical fiber (or active optical fiber) as a gain medium to amplify an optical signal. The optical signal to be amplified and a pump signal are multiplexed into the doped fiber, and the optical signal is then amplified through interaction with the doping ions.
Data Source
AI summary
An optical amplification system that includes a combiner and an active fiber. The combiner is configured to receive and combine an input signal and an excitation signal. The active fiber is configured to receive the input signal and the excitation signal from the combiner and generate an amplified input signal. The active fiber is directly coupled to the combiner.