Modular Optical Switch Expansion Using Bypass Ports
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Solution Overview
Problem
Existing optical switching components lack the capability for modular, scalable expansion beyond geometric progression, limiting their applicability in large and complex optical networks.
Innovation Solution
The introduction of expansion ports and bypass optical switches in photonic integrated circuits allows for linear expansion of optical switching modules, enabling scalable optical switching systems by interconnecting multiple modules in linear configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If optical switching components use traditional geometric progression expansion, then switching capability can be achieved, but device complexity and capital expenses increase significantly
Solution Approach 1:
The optical switch is divided into multiple independent switching modules, each with a fixed switching capability (e.g., 8x8). These modules can be independently manufactured and then interconnected through expansion ports to achieve larger switching capabilities, avoiding the need to manufacture increasingly complex single-unit switches.
Solution Approach 2:
Multiple switching modules are nested together through expansion ports to form larger switching systems. The expansion ports allow modules to be interconnected in a hierarchical manner, where each module can serve as both a standalone unit and as part of a larger integrated system.
2Adaptability or versatility
If optical switching components are designed for scalability, then future expansion is enabled, but initial device complexity increases
Solution Approach 1:
Each switching module is designed with universal expansion ports that can interconnect with other identical modules. The expansion ports serve multiple functions: they enable module interconnection for scaling, provide bypass capabilities for signal routing, and maintain compatibility across different module configurations.
Solution Approach 2:
The switching system is designed to be dynamically configurable through expansion ports that can be activated or deactivated based on scaling requirements. Modules can be added or removed from the system without requiring redesign of the entire switching architecture, allowing flexible adaptation to changing network demands.
3Adaptability or versatility
If bypass optical switches are added for linear expansion, then scalability is improved, but manufacturing complexity increases
Solution Approach 1:
The bypass optical switch functionality is merged into the same photonic integrated circuit substrate as the main switching elements. This integration allows both switching and bypass functions to be manufactured together in a single fabrication process, eliminating the need for separate manufacturing steps or additional discrete components.
Data Source
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AI summary
Telecommunications switches are presented, including expandable optical switches that allow for a switch of N inputs x M outputs to be expanded arbitrarily to a new number of N inputs and/or a new number of M outputs. Switches having internal switch blocks controlling signal bypass lines are also provided, with these switches being useful for the expandable switches.