Bi-directional Multi-core Optical Components for Signal Amplification
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Solution Overview
Problem
Current optical communication systems using multi-core fibers face challenges in efficiently amplifying signals across multiple cores without the need for additional optical components like FIFO devices, which increase loss and do not provide space savings in repeater housings.
Innovation Solution
The implementation of bi-directional optical components that include multi-core optical components, erbium-doped fiber amplifiers (EDFAs), and multifunctional components such as isolators, wavelength division multiplexing (WDM) components, gain flattening filters (GFFs), and tap components, which are designed to operate in a bi-directional manner within the multi-core fiber architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional FIFO devices are used to amplify signals in multi-core fibers, then signal amplification is achieved, but additional optical components increase signal loss and occupy space in repeater housings
Solution Approach 1:
The patent combines multiple optical functions (amplification, wavelength division multiplexing, isolation, gain flattening, and signal tapping) into integrated multi-core optical components. This merging eliminates the need for separate FIFO devices and reduces the total number of optical components in the system, directly addressing the contradiction by reducing both signal loss and device complexity.
Solution Approach 2:
The multi-core optical components are designed to perform multiple functions simultaneously - amplifying signals across multiple cores, providing wavelength division multiplexing, isolating bidirectional signals, flattening gain, and enabling signal monitoring. This multi-functionality reduces the overall component count and minimizes signal loss compared to traditional single-function components.
2Area of stationary object
If traditional optical components are used in multi-core fiber systems, then signal transmission is achieved, but space is consumed in repeater housings
Solution Approach 1:
By merging multiple optical functions into single multi-core components, the physical footprint in repeater housings is significantly reduced. The integrated design allows all necessary functions (amplification, WDM, isolation, gain flattening) to coexist in a compact form factor, preserving signal transmission quality while minimizing space consumption.
Solution Approach 2:
The patent employs a nested architecture where multiple functional sub-components are integrated within a single multi-core optical component structure. This nesting approach allows complex functionality to be packed into a compact space, reducing the area occupied in repeater housings while maintaining full signal transmission capability.
3Productivity
If bidirectional transmission is implemented in multi-core fibers, then communication capacity is increased, but signal interference and loss increase
Solution Approach 1:
The patent segments bidirectional signal paths by assigning different core groups for different transmission directions. This segmentation, combined with isolator integration, prevents signal interference between opposite-direction transmissions while maintaining high communication capacity. Each direction's signal is confined to specific cores, reducing cross-talk and signal loss.
Solution Approach 2:
The multi-core optical components provide universal functionality that handles both bidirectional signal amplification and isolation simultaneously. This integrated approach manages interference between opposite-direction signals while maintaining high communication capacity across all cores.
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 solution enables efficient bi-directional optical signal transmission in multi-core amplified transmissions, reducing the need for additional components, minimizing signal loss, and providing space savings in repeater housings while maintaining high signal quality.
Implementation Method 1
an erbium-doped fiber amplifier (EDFA) optical component coupled to all fiber cores in the multi-core fiber, wherein the EDFA optical component includes a plurality of EDFAs
Data Source
AI summary
A method and a system for transmission of optical signals. One or more first and second multi-core optical components are coupled to all fiber cores in a multi-core fiber. An erbium-doped fiber amplifier (EDFA) optical component is coupled to all fiber cores in the multi-core fiber and includes a plurality of EDFAs. Each fiber core is coupled to an EDFA. The EDFA optical component is coupled to all fiber cores between the first and second multi-core optical components. First multi-core components are coupled at an input to a first portion of fiber cores and provide first functions, and are coupled at an output from a second portion of fiber cores and provide second functions. Second multi-core components are coupled at an output from the first portion of fiber cores and provide second functions, and are coupled to an input to the second portion of fiber cores and provide first functions.