Pre-termination Module Box for 1U Optical Fiber Distribution
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Solution Overview
Problem
Conventional optical fiber distribution boxes are limited in compatibility and scalability, as they are often customized, costly, and interfere with signal transmission during maintenance, particularly when handling higher core counts like 144-core systems, and existing solutions cannot efficiently manage different core configurations within a standard 1U cabinet.
Innovation Solution
A pre-termination module box with twelve groups of MDC adapters, each with at least two-core MDC connectors, and a locking mechanism that allows independent assembly and disassembly, enabling compatibility with 8-core, 12-core, and 24-core systems, and allowing six module boxes to fit within a 1U cabinet without interfering with each other during maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional 144-core MPO distribution box uses eighteen 8-core pre-termination module boxes arranged in three-layer drawer structure, then 144-core optical fiber wiring can be achieved, but the module boxes cannot be independently maintained and signal transmission is interfered with during maintenance
Solution Approach 1:
The distribution box is segmented into six independent 24-core module boxes instead of eighteen 8-core module boxes. Each module box can be independently installed, removed, and maintained through the front opening without affecting other modules, enabling independent maintenance while achieving 144-core capacity.
Solution Approach 2:
The module boxes are arranged horizontally in a single row instead of vertically in multiple layers. This dimensional change allows each module to be accessed and maintained independently from the front opening, eliminating the interference problem caused by the three-layer drawer structure where all modules needed to be pulled out simultaneously.
2Adaptability or versatility
If conventional 1U distribution cabinet uses plastic buckles to install four MPO module boxes, then 12-core and 24-core MPO systems can be matched, but the width is occupied by buckles and only four 96-core module boxes can be assembled
Solution Approach 1:
The plastic buckles are completely removed from the design. Instead, a locking member is integrated directly into the module box structure, which engages with the distribution box body through a locking groove. This extraction of the intermediate fastening component eliminates the width occupation by buckles and reduces overall space consumption.
Solution Approach 2:
The locking function is merged into the module box structure itself through an integrated locking member, rather than using separate plastic buckles. This integration eliminates the need for additional width-consuming fastening components and allows for more efficient space utilization.
3Quantity of substance
If conventional 144-core MPO distribution box uses eighteen 8-core pre-termination module boxes, then 144-core wiring is achieved, but the module boxes cannot be connected to 12-core and 24-core MPO connection adapters
Solution Approach 1:
Each module box is designed with twelve groups of MDC adapters that can accommodate different core configurations (8-core, 12-core, 24-core) through flexible patch cord arrangements. The module boxes can be connected to various MPO connection adapters, providing universal compatibility across different core counts and eliminating the limitation of fixed 8-core configuration.
4Quantity of substance
If custom-made 144-core MPO optical fiber distribution box is manufactured, then 144-core wiring capacity is achieved, but the cost is high and it is incompatible with international standard MPO optical fiber distribution box size
Solution Approach 1:
The 144-core distribution box is segmented into six standardized 24-core module boxes that can be independently manufactured and assembled. This modular approach allows each module to be produced using standard manufacturing processes, reducing customization costs and enabling compatibility with international standard 1U cabinet dimensions.
Solution Approach 2:
The module boxes are designed to fit within standard 1U cabinet dimensions, making them compatible with international standard MPO optical fiber distribution boxes. This standardization enables mass production at lower costs while maintaining 144-core capacity through the modular six-module configuration.
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
The solution provides flexible and efficient optical fiber management, allowing for different core configurations without the need for customization, reducing space occupation, and enabling independent maintenance of each module box, thus enhancing compatibility and reducing costs while protecting signal integrity.
Implementation Method 1
the locking member arranged at the rear end of the box body is matched with a rear end of the receiving groove through an elastic press-type lock
Data Source
AI summary
A pre-termination module box and an optical fiber distribution box using same are provided, twelve groups of MDC adapters configured at a front end of a box body and arranged in a horizontal, single row. Each group of the twelve groups of MDC adapters adopts at least one two-core MDC connector, and a plurality of groups of MPO adapters configured at a rear end of the box body and arranged in a horizontal single row to connect with the twelve groups of MDC adapters. A receiving room is formed in the box body for receiving patch cords that are connected between the MDC and MPO adapters, a locking member arranged at the rear end and configured to lock the pre-termination module box in the optical fiber distribution box, which has high wiring capacity and is conducive to reducing a floor area of a central machine room and saving costs.