Optical Fiber Transmission System Using MIMO and Segmented Core-Cladding
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Solution Overview
Problem
Current optical transmission systems require further improvement in communication speed to meet increasing demands.
Innovation Solution
The system employs semiconductor lasers and photoelectric conversion elements with specific semiconductor materials to convert electric power into optical energy for transmission through optical fibers, utilizing different wavelengths for efficient light-electricity conversion, and includes multiple-input multiple-output (MIMO) communication to enhance data transmission speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional optical transmission systems are used, then system simplicity is maintained, but communication speed is insufficient
Solution Approach 1:
The optical fiber is divided into distinct functional regions: a core for signal light transmission and a cladding layer for feed light transmission. This segmentation allows simultaneous transmission of different types of light through different paths, enabling both communication and power transmission without interference, thus improving communication speed while maintaining reasonable system complexity
Solution Approach 2:
The patent utilizes the spatial dimension within the optical fiber structure by creating a multi-layer configuration where the core and cladding operate at different spatial levels. The core transmits signal light while the cladding transmits feed light, effectively adding a dimensional separation that enables higher communication speeds without proportionally increasing system complexity
2Power
If feed light is transmitted through the core, then power transmission is achieved, but signal light transmission is interfered with
Solution Approach 1:
The optical fiber structure is segmented into a core region dedicated to signal light transmission and a cladding region dedicated to feed light transmission. This physical separation ensures that power transmission through the cladding does not interfere with signal transmission through the core, maintaining signal transmission quality while achieving efficient optical power transmission
Solution Approach 2:
The cladding layer acts as an intermediary structure that enables feed light transmission without affecting the core's signal transmission. By introducing this intermediate layer with specific refractive index properties, the system achieves power transmission while protecting signal transmission quality from interference
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 significantly improves communication speed and optical power supply efficiency, enabling higher data transmission rates compared to conventional systems.
Implementation Method 1
an optical transmitter that transmits signal light modulated with an electric signal and feed light for supplying electric power
Implementation Method 2
an optical receiver that operates with electric power obtained by converting the feed light transmitted through the first cladding of the optical fiber
Data Source
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AI summary
An optical fiber transmission system 1C comprises: a plurality of light supply devices 150 that output signal lights; a plurality of light reception devices 360 that receive the signal lights; and an optical fiber cable 200C that transmits the signal lights. The plurality of signal lights that are outputted from the plurality of light supply devices 150 and have different signals from one another pass through a simplex core or cladding of the optical fiber cable 200C and are received by the plurality of light reception devices 360, and MIMO communication is thus performed.