Optical Transmission Device With Modular Interface Units
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Solution Overview
Problem
The increasing number of optical fibers in submarine cables and diversification of user requirements necessitate an optical transmission device and system that can accommodate various transponder installation forms, including both in-station and out-of-station configurations within a single optical fiber transmission path.
Innovation Solution
An optical transmission device installed inside a station building, featuring multiple interface units connected to different optical fiber transmission paths, allowing for the mediation of optical signals between in-station and out-of-station transponders, enabling flexible transponder installation and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If transponders are accommodated only inside station buildings, then device management is simplified, but adaptability to diverse user requirements and installation locations is reduced
Solution Approach 1:
The optical transmission device is designed with multiple interface units that can accommodate both in-station and out-of-station transponders through a unified architecture. The device provides universal functionality to handle diverse installation forms, allowing the same optical transmission device to work with transponders located either inside or outside the station building without requiring fundamentally different system configurations.
Solution Approach 2:
The optical transmission device is segmented into multiple independent interface units, where each interface unit can be independently configured to connect with transponders at different locations. This segmentation allows flexible combination of in-station and out-of-station transponder connections, enabling the system to adapt to diverse installation requirements while maintaining manageable complexity through modular design.
2Adaptability or versatility
If multiple optical fiber transmission paths are used to accommodate different transponder installation forms, then installation flexibility is improved, but the number of required optical fibers increases
Solution Approach 1:
Multiple optical fiber transmission paths are merged into a single optical fiber cable through efficient fiber allocation and multiplexing strategies. The system combines the functions of what would traditionally require separate cables into one consolidated cable structure, reducing the total quantity of optical fibers needed while maintaining the flexibility to support both in-station and out-of-station transponder installations.
3Ease of operation
If transponders are installed outside station buildings, then installation location freedom is improved, but signal transmission distance and potential signal degradation increase
Solution Approach 1:
The optical transmission device acts as an intermediary between out-of-station transponders and the core network infrastructure. This intermediary function includes signal regeneration, amplification, and conditioning capabilities that compensate for transmission distance effects, thereby maintaining signal quality and reliability even when transponders are installed at remote locations outside the station building.
Data Source
AI summary
An optical transmission device and an optical communication system being capable of coping with various installation forms of a transponder in a unit of optical fiber transmission path are provided. The optical transmission device is installed inside a station building. First and second interface units are connected to first and second fiber transmission paths accommodated in a submarine optical fiber cable. A first fiber transmission path mediates an optical signal to be transmitted between the first interface unit and a first transponder. A second fiber transmission path mediates an optical signal to be transmitted between the second interface unit and a second transponder.