Adaptive Gain Equalization via Optical Switch Bypass
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing gain equalization methods in submarine communication systems are costly due to the need for frequent seabed maintenance, have high power consumption, and complex structures, and suffer from reliability issues with wavelength selective switches, leading to increased optical loss and uneven signal transmission.
Innovation Solution
A gain equalization apparatus with a first path including a gain equalizer for correcting signal tilt, a second path with minimal optical loss through-fiber for bypassing correction, and an optical switch controlled by a unit for switching between these paths, allowing for adaptive compensation of optical loss without complex matrix switches or redundant wavelength selective switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a gain equalizer is used to correct tilt of WDM signals, then transmission quality is improved, but optical loss increases and power consumption increases
Solution Approach 1:
The patent implements dynamic switching between the gain equalizer path and the through-fiber path based on real-time monitoring of optical loss conditions. When optical loss exceeds a threshold, the system automatically switches to the through-fiber bypass path, avoiding the high optical loss associated with the gain equalizer. This dynamic adaptation allows the system to maintain transmission quality when needed while minimizing optical loss during normal operation.
2Reliability
If a wavelength selective switch device is used to adjust WDM signal levels, then gain equalization is achieved, but the apparatus size and power consumption increase
Solution Approach 1:
The patent extracts only the essential function of wavelength selective switching by implementing a simple optical switch that toggles between two fixed paths (gain equalizer path and through-fiber path), rather than using a complex wavelength selective switch device. This extraction of the core functionality eliminates the need for complex wavelength routing mechanisms, significantly reducing power consumption and apparatus size while maintaining the ability to adjust signal levels.
3Adaptability or versatility
If a matrix switch with complicated structure is used for equalization, then signal routing flexibility is improved, but device complexity and size increase
Solution Approach 1:
The patent extracts the essential routing function from a complex matrix switch, implementing only the necessary path selection between two fixed routes (through the gain equalizer or through the bypass fiber). This simplified approach eliminates the need for complex switching matrices while maintaining adequate routing flexibility for the specific application of gain equalization.
4Reliability
If optical filters are replaced or new repeaters are added to compensate for increased optical loss, then transmission quality is maintained, but maintenance cost and operational complexity increase
Solution Approach 1:
The patent incorporates a through-fiber bypass path as a pre-configured alternative route during the system design phase. When optical loss increases due to filter aging or cable deterioration, the system can immediately switch to this pre-prepared bypass path without requiring physical intervention to replace filters or add new repeaters. This preliminary preparation of alternative paths significantly reduces maintenance costs and operational complexity.
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 reduces power consumption, suppresses optical loss, and improves reliability by allowing for efficient switching between correction and bypass paths, thereby reducing maintenance costs and ensuring stable signal transmission.
Implementation Method 1
an optical switch capable of switching between the first path including the gain equalizer and the second path including the through-fiber
Data Source
AI summary
A gain equalization apparatus according to an example embodiment includes a first path including a gain equalizer configured to correct a tilt of an input optical signal, a second path including a through-fiber configured to transmit the input optical signal therethrough as it is, an optical switch capable of switching between the first path including the gain equalizer and the second path including the through-fiber, at least one memory configured to store instructions, and at least one processor configured to execute the instructions to control the switching of the optical switch. By this configuration, a gain equalization apparatus and a method for equalizing a gain capable of reducing power consumption and suppressing an increase in optical loss while improving reliability are provided.