WDM Terminal Switching Matrix for Flexible Transceiver Routing
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Solution Overview
Problem
Wavelength division multiplex terminals lack flexibility in managing and supervising transceiver connections, requiring new interconnections when the number of transceivers is upgraded or when new connections between ports and receivers are necessary, and existing supervision methods are limited in ensuring accurate routing and monitoring of optical signals.
Innovation Solution
The implementation of a first and second switching matrix connected to wavelength division multiplexers and demultiplexers, respectively, with optical monitoring receivers to receive identification signals for routing and supervision, and an equipment management unit to configure and manage these connections, ensuring flexible and accurate routing of transceiver signals. Additionally, the use of power splitters and combiners for bidirectional steering and supervision of transponder signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transceivers are connected to fixed terminal points of multiplexers and demultiplexers, then the system structure is simple, but flexibility is reduced when upgrading transceivers or establishing new connections
Solution Approach 1:
The terminal is divided into multiple functional modules: switching matrices, multiplexers, demultiplexers, and monitoring receivers. Each module handles specific tasks independently, allowing flexible reconfiguration of connections without redesigning the entire system.
Solution Approach 2:
The switching matrices provide universal connection capabilities, allowing any transceiver to be connected to any port through configurable switching paths. This multi-functional switching capability enables the system to adapt to different connection requirements while maintaining a unified structural framework.
2Adaptability or versatility
If new interconnections are created for upgraded transceivers or new connections, then adaptability is improved, but device complexity and interconnection requirements increase
Solution Approach 1:
The switching matrices implement dynamic connection management, allowing connection paths to be reconfigured in real-time based on system requirements. This dynamic switching capability enables flexible adaptation to upgraded transceivers or new connections without permanent structural changes.
Solution Approach 2:
The equipment management unit acts as an intermediary that automatically configures switching matrix connections based on identification signals from monitoring receivers. This intermediary control mechanism simplifies the complexity of managing multiple possible interconnections by providing automated, centralized control.
3Adaptability or versatility
If fixed wavelength band-pass filters are used in multiplexers and demultiplexers, then the system structure is straightforward, but flexibility for tunable transceivers is limited
Solution Approach 1:
The monitoring receivers capture identification signals from transceivers before routing, allowing the equipment management unit to pre-configure the switching matrices with the correct connection paths. This preliminary identification and configuration action enables flexible wavelength routing while maintaining systematic filter management.
Solution Approach 2:
The monitoring receivers provide feedback about transceiver identification signals to the equipment management unit, which uses this information to automatically configure switching paths. This feedback mechanism enables the system to adapt to tunable transceivers while maintaining structured filter configuration through automated control.
Data Source
AI summary
A wavelength division multiplexer terminal with a multiplexer arrangement with a first switching matrix, and a demultiplexer arrangement with a second switching matrix allows flexibility for connection transceivers to ports of the wavelength division multiplexer and wavelength division demultiplexer respectively. Optical monitoring receivers are connected upstream the wavelength division multiplexer and downstream the wavelength division demultiplexer for managing and supervising connections.