Optical Transmitter Power Reduction via Polarization Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Optical communication networks face challenges in reducing energy consumption without deteriorating neighboring channel performance, as lowering the symbol rate in the optical domain can significantly impact adjacent channels, potentially leading to unsuccessful signal transmission.
Innovation Solution
Adapting the data rate of transmitters and receivers by switching off or putting unnecessary components into standby mode, particularly by adjusting polarization, allowing for reduced power consumption without affecting neighboring channels, applicable to all polarization multiplexed modulation formats.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the symbol rate of the optical signal is reduced to lower power consumption, then energy efficiency is improved, but the performance of adjacent channels deteriorates
Solution Approach 1:
The optical signal is segmented into multiple polarization components (e.g., horizontal and vertical polarizations). By selectively de-multiplexing and processing only the required polarization component(s), the system reduces the effective symbol rate impacting adjacent channels while maintaining energy efficiency. This segmentation allows independent control of each polarization's contribution to adjacent channel interference.
2Use of energy by moving object
If the data rate is reduced to save energy, then power consumption decreases, but the transmission performance and reach are compromised
Solution Approach 1:
The system dynamically adapts the data rate and processing configuration based on actual traffic requirements and channel conditions. By using polarization division multiplexing with selective de-multiplexing, the system can operate at higher effective data rates when needed while consuming less power during low-traffic periods, optimizing both productivity and energy efficiency adaptively.
Solution Approach 2:
The system changes operational parameters by switching between different polarization configurations and processing modes. This allows the transmission system to maintain optimal performance across varying conditions, adjusting the effective symbol rate and processing complexity to balance transmission reach requirements with power consumption constraints.
3Productivity
If parallel data paths are used in digital signal processors for high bit-rate coherent detection, then data processing capability is improved, but energy consumption increases significantly
Solution Approach 1:
The system extracts and processes only the necessary polarization component(s) from the multiplexed optical signal, rather than processing all components in parallel. By taking out and independently processing only the required polarization data paths, the system reduces the number of parallel processing operations needed, thereby lowering energy consumption while maintaining adequate data processing capability for the required traffic.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A method and a device for data processing in an optical communication network are provided, wherein in an energy saving mode of a polarization multiplexing system data signals are transmitted or received via one polarization plane; and wherein components of the transmitter or receiver of the other polarization plane are at least partially operated in a reduced power mode. Furthermore, a communication system is suggested comprising said device.