Intelligent Subscriber Subsystem for Long-Reach Optical Access
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Solution Overview
Problem
The increasing bandwidth demand and deployment costs of advanced optical access communication systems, coupled with decreasing return on investment, pose a significant business dilemma, particularly in providing mobile and global intelligent pervasive and always-on internet access.
Innovation Solution
A dynamic intelligent bidirectional optical access communication system utilizing phase and intensity modulators at an intelligent subscriber subsystem to reduce the Rayleigh backscattering effect, enabling a longer-reach optical access network that eliminates the need for middle equipment like routers and switches, and providing wavelength, bandwidth, and service on-demand.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If advanced optical access communication systems are deployed to meet increasing bandwidth demand, then service capability is improved, but deployment cost increases
Solution Approach 1:
The system segments the optical network into distinct functional modules: optical line terminal (OLT), optical network unit (ONU), and passive optical components. This modular segmentation allows for standardized deployment and reduces overall system complexity while meeting bandwidth requirements.
Solution Approach 2:
The optical access system is designed with multi-functional capabilities to handle various service types (data, voice, video) over a single infrastructure. The system provides universal service support through protocol adaptation and quality of service (QoS) mechanisms, eliminating the need for separate networks for different services.
2Length of stationary object
If middle equipment like routers and switches are added to extend network reach, then coverage area is improved, but device complexity and cost increase
Solution Approach 1:
The patent introduces passive optical components (splitters, couplers) as intermediaries between the OLT and ONU. These passive elements extend network reach without requiring active routing or switching equipment, thereby maintaining system simplicity while increasing coverage area.
Solution Approach 2:
The system replaces active mechanical routing and switching equipment with passive optical splitting and wavelength division multiplexing. This substitution eliminates moving parts and complex control mechanisms while achieving the same network extension function through optical physics principles.
3Device complexity
If Rayleigh backscattering effect is not mitigated, then system simplicity is maintained, but signal quality and transmission distance deteriorate
Solution Approach 1:
The system changes the wavelength parameter of optical signals to operate in regions where Rayleigh backscattering is minimized. By selecting specific wavelength bands and using wavelength division multiplexing, the system achieves long-distance transmission with acceptable signal quality while maintaining relative system simplicity.
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 extends the reach of optical access communication networks, reduces deployment costs, and enhances service flexibility by offering on-demand services, thereby improving the return on investment and supporting global, mobile, and pervasive internet connectivity.
Implementation Method 1
a phase modulator and an intensity modulator at an intelligent subscriber subsystem
Implementation Method 2
a phase modulator and an intensity modulator at an intelligent subscriber subsystem
Implementation Method 3
to reduce the Rayleigh backscattering effect on the propagation of optical signals
Data Source
AI summary
An intelligent subsystem comprising a microprocessor, a foldable/stretchable display, radio modules/transceivers, a first set of computer implementable instructions for intelligent learning (that can include (i) artificial intelligence or an artificial neural network and (ii) fuzzy logic) and a second set of computer implementable instructions in natural language is disclosed. The intelligent subsystem can (i) respond to a user's interests and/or preferences and (ii) provide a peer-to-peer transaction. Furthermore, the intelligent subsystem can be sensor-aware or context-aware.