Modular Fiber Management Cassette for Bend Radius Control
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Solution Overview
Problem
Optical fiber elements stored in optical joint closures without support tend to become entangled or form loops with a bend radius smaller than the minimum allowed, leading to excessive attenuation.
Innovation Solution
A modular fiber management cassette with interconnecting modules that form a winding area capable of accommodating varying lengths of optical fiber elements, featuring a mandrel and retaining tabs to manage and support the loops, ensuring they meet or exceed the minimum bend radius requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If optical fiber elements are stored without support in an optical joint closure, then the device complexity is reduced, but the fiber elements become entangled or form loops with bend radius smaller than minimum allowed, causing excessive attenuation
Solution Approach 1:
The cassette is divided into multiple detachable modules (first module, second module, and optional third module) that can be assembled to form the complete winding area. This segmentation allows the support structure to be built only when needed, rather than requiring a complex fixed structure from the beginning.
Solution Approach 2:
The modular design with detachable modules creates a dynamic structure that can be adjusted and configured based on the specific fiber length requirements. The cassette evolves from a simple container to a structured support system as modules are added, adapting to different deployment scenarios.
2Manufacturing precision
If a fixed-size winding area is provided in the cassette, then the manufacturing precision is improved, but the adaptability to different fiber lengths and closure sizes is reduced
Solution Approach 1:
The winding area is created through the assembly of multiple standardized modules rather than being a single fixed component. Each module has precisely manufactured features, but the overall winding area size can vary depending on how many modules are assembled, thus maintaining manufacturing precision while achieving adaptability.
Solution Approach 2:
The cassette transitions from a static, fixed-size design to a dynamic, configurable structure. The winding area can be expanded or contracted by adding or removing modules, allowing the same cassette design to accommodate different fiber lengths and fit various closure sizes.
3Adaptability or versatility
If multiple modules are interconnected to form the winding area, then the adaptability to different fiber lengths is improved, but the device complexity increases
Solution Approach 1:
The interconnection system is itself segmented into simple, standardized components (fixing elements on each module) that repeat across modules. This modular approach to the connection system makes it easier to manage complexity compared to a custom-designed interconnection mechanism.
Solution Approach 2:
The fixing elements are designed with universal functionality to interconnect different modules in various configurations. The same type of fixing element serves multiple purposes and can connect any module to any other module, reducing the need for specialized connection components for each module pair.
4Quantity of substance
If the cassette is designed to fit large optical joint closures, then the fiber management capacity is improved, but the ease of operation for installation and removal is reduced
Solution Approach 1:
The large-capacity cassette is segmented into smaller modules that can be handled individually during installation. This allows the overall large structure to be assembled in manageable steps, improving ease of operation compared to installing a single large monolithic cassette.
Solution Approach 2:
The cassette provides dynamic configurability during installation - modules can be added or removed based on the actual fiber length requirements discovered during installation, rather than requiring the full large-capacity structure to be installed upfront. This reduces the operational burden of handling unnecessarily large components.
Data Source
AI summary
A fiber management cassette for storing loops of one or more optical fiber elements is disclosed. An exemplary cassette includes a first module comprising a first portion of a winding area and first fixing elements and a second module comprising a second portion of the winding area and second fixing elements. The first fixing elements are configured to engage with the second fixing elements for releasably interconnecting the first module and the second module and to join the first portion and the second portion to form the winding area, which is configured to store the loops of one or more optical fiber elements. The first module comprises a fiber passageway allowing the optical fiber elements to enter and exit the cassette.