ASE Protection Path for Optical Signal Integrity
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Solution Overview
Problem
Optical networking systems face challenges in maintaining operational media channels when multiple channels fail, leading to power transients and signal degradation that cannot be corrected in a timely manner.
Innovation Solution
The system associates a signal working path with an ASE protection path to form a protection group, pre-establishing optical cross-connects for frequency bands, and activates ASE transmitters to supply light matching the failed channels, ensuring operational channels are maintained.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If optical amplifiers and wave division multiplexing are used to enable high-bandwidth communication, then communication capacity is improved, but signal integrity deteriorates when channel failures occur due to power transients
Solution Approach 1:
The system pre-configures protection paths and pre-establishes optical cross-connects for frequency bands before failures occur. When a channel failure is detected, the pre-configured ASE protection path is immediately activated, eliminating the need for real-time path calculation and switching during the failure event, thus maintaining signal integrity while supporting high-bandwidth communication
Solution Approach 2:
An ASE (Amplified Spontaneous Emission) protection path is introduced as an intermediary mechanism between the working path and the failure condition. The ASE light acts as a mediator that compensates for power loss in failed channels by injecting broadband optical noise that spans multiple frequency bands, thereby maintaining signal integrity without reducing communication capacity
2Stability of the object's composition
If power control cycles are extended to maintain operational channels, then channel stability is improved, but response time to failures deteriorates
Solution Approach 1:
The system performs preliminary configuration of protection paths and optical cross-connects before failures occur. This pre-configuration enables immediate response to failures without waiting for the next power control cycle, achieving both channel stability and fast response time simultaneously
3Reliability
If ASE transmitters are activated to compensate for failed channels, then operational channel maintenance is improved, but system complexity increases
Solution Approach 1:
The ASE transmitter is designed as a universal protection mechanism that can compensate for failures across multiple frequency bands simultaneously. A single ASE protection path can serve multiple working paths, reducing the overall number of protection components needed and simplifying the system architecture while maintaining operational channels
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 effectively maintains operational channels by automatically replacing failed groups with ASE light, minimizing disruptions to existing data transmission and optimizing spectral loading in optical fiber networks.
Implementation Method 1
the ASE protection path having a headend node, a tailend node, and an intermediate node, the ASE protection path identifying one or more ASE transmitter to supply ASE light
Data Source
AI summary
A method and system is described. A signal indicative of a failure of a first channel within a plurality of channels of a transmission signal traversing a signal working path in a network is received. The signal working path has a headend node, a tail-end node and an intermediate node. The first channel has a frequency band and a power level prior to failing. The signal working path is associated with a protection path. The protection path includes the intermediate node, optical cross-connects, and a transmitter supplying (ASE) light. The transmitter is activated to supply the ASE light within a frequency band and having a power level corresponding to the frequency band and power level associated with the first channel. The ASE light is supplied to a cross-connect, such that the cross-connect provides a transmission signal including the ASE light.