Optical Transmitter System with Parallel Signal Manipulation Paths
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Solution Overview
Problem
RF-over-fiber techniques suffer from low signal-to-noise ratio (SNR), limiting the obtainable bandwidth for transmitting high-frequency RF signals over longer distances.
Innovation Solution
An optical transmitter system with multiple signal manipulation paths, each equipped with an electro-optical converter and a signal manipulation unit, processes RF signals to enhance the SNR by adapting and converting them into optical signals, which are then combined and transmitted, allowing for improved signal reconstruction with minimal losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If RF-over-fiber techniques are used to transmit high-frequency RF signals over larger distances, then transmission distance is improved, but signal-to-noise ratio deteriorates
Solution Approach 1:
The patent divides the RF signal transmission into multiple parallel signal manipulation paths (at least two paths), where each path processes a portion of the RF signal independently. This segmentation allows the system to overcome the limitations of single-path transmission and achieve better SNR while maintaining extended transmission distance through optical fiber.
2Productivity
If RF-over-fiber techniques are used to transmit high-frequency RF signals, then transmission bandwidth is improved, but signal-to-noise ratio deteriorates
Solution Approach 1:
The RF signal is divided into multiple parallel paths for simultaneous processing, enabling the system to achieve higher effective bandwidth while maintaining signal integrity. Each path handles a portion of the signal spectrum, and the combined output achieves both high bandwidth and improved SNR.
Solution Approach 2:
The patent transitions from electrical domain transmission to optical domain transmission, adding a new dimension to the signal transmission process. This electro-optical conversion enables signals to be transmitted over optical fiber with reduced losses and improved SNR while maintaining high bandwidth capability.
3Reliability
If signal manipulation paths with electro-optical converters are used, then signal-to-noise ratio is improved, but device complexity increases
Solution Approach 1:
The system is divided into multiple independent signal manipulation paths, each containing an electro-optical converter. This modular segmentation allows the complexity to be distributed across parallel units rather than concentrated in a single complex component, making the overall system more manageable while achieving improved SNR.
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 system significantly enhances the SNR by at least 3 dB, enabling the transmission of RF signals up to several ten GHz or hundred GHz with enhanced bandwidth and low losses, suitable for applications requiring high-frequency signal transmission.
Implementation Method 1
Each of the signal manipulation paths comprises an electro-optical convertor, wherein the electro-optical convertor is configured to convert RF signals into a corresponding converted optical signal
Data Source
AI summary
An optical transmitter system for receiving and converting a radio frequency (RF) comprises an RF receiver circuit and at least two signal manipulation paths. The RF receiver circuit is configured to receive an RF signal. The at least two signal manipulation paths are connected with the RF receiver circuit, respectively, to receive the RF signal from the receiver circuit. The signal manipulation paths are configured to process the received RF signal, thereby obtaining a manipulated optical signal, respectively. Each of the signal manipulation paths comprises an electro-optical convertor. The electro-optical convertors are configured to convert RF signals into a corresponding converted optical signal. At least one of the signal manipulation paths comprises a signal manipulation unit configured to adapt a signal processed by the respective signal manipulation path based on at least one operation to obtain a manipulated signal.