Multi-Core Fiber Optical Amplifier with Segmented Pump Couplers
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Solution Overview
Problem
Current optical amplifiers for multi-core fibers face challenges in efficiently coupling and amplifying light across multiple optical cores, leading to limitations in data transfer capacity and signal routing efficiency.
Innovation Solution
The development of an optical device with first and second arrays of optical couplers and waveguides over a substrate, allowing one-to-one end-coupling to multi-core or single-core fibers, along with pump couplers for amplification, enhances light amplification and routing capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional optical amplifiers are used for multi-core fibers, then the structure is simple, but the light coupling and amplification efficiency across multiple optical cores is poor
Solution Approach 1:
The optical amplifier is divided into multiple independent pump couplers, each dedicated to a specific optical core. This segmentation allows each pump coupler to independently couple and amplify light in its assigned core, thereby improving overall light coupling efficiency across multiple cores while maintaining a modular structure that is relatively easy to manufacture.
Solution Approach 2:
Pump couplers are introduced as intermediary components between the pump light source and the optical cores. These couplers facilitate efficient light coupling by acting as intermediate optical elements that bridge the pump source and the multiple cores, thereby improving coupling efficiency without requiring direct complex integration.
2Device complexity
If conventional optical amplifiers are used for multi-core fibers, then the device complexity is low, but the data transfer capacity is limited
Solution Approach 1:
The amplifier structure is segmented into multiple pump couplers corresponding to multiple optical cores, enabling independent amplification in each core. This allows the system to utilize the full data transfer capacity of multi-core fibers without requiring overly complex integrated structures, thus maintaining relatively simple device architecture while increasing productivity.
Solution Approach 2:
The optical amplifier is designed with universal pump couplers that can be applied to each optical core in a multi-core fiber system. This multi-functional design allows a single amplifier device to handle multiple cores simultaneously, increasing data transfer capacity without proportionally increasing device complexity.
3Device complexity
If conventional optical amplifiers are used for multi-core fibers, then the coupling structure is simple, but the signal routing efficiency is poor
Solution Approach 1:
The coupling structure is segmented into multiple independent pump couplers, each responsible for coupling and routing signals in a specific optical core. This segmentation improves signal routing efficiency by allowing independent optimization of each coupling path while keeping the overall coupling structure relatively simple and modular.
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 light amplification and routing across multiple optical cores, increasing data transfer capacity and reducing costs compared to single-mode fibers, while allowing for selective amplification and polarization-diverse amplification.
Implementation Method 1
The plurality of optical waveguides connects in a one-to-one manner the optical couplers of the first array to the optical couplers of the second array
Implementation Method 2
Each optical waveguide has a pump coupler connected thereto between the ends of the waveguide
Data Source
Figure 1
Figure 2~3
Figure 4A~4B
AI summary
One aspect provides an optical device. The optical device includes a first and a second array of optical couplers, a plurality of waveguides and a plurality of pump couplers located over a surface of a substrate. The optical couplers of the first array are able to end- couple in a one-to-one manner to the optical cores of a first multi-core fiber having an end facing and adjacent to the first array and the surface. The optical couplers of the second array are able to end-couple in a one-to- one manner to optical cores having ends facing and adjacent to the second array. The plurality of optical waveguides connects in a one-to-one manner the optical couplers of the first array to the optical couplers of the second array. Each optical waveguide has a pump coupler connected thereto between the ends of the waveguide.