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Custom-made fiber optic splice closures

Fiber optic splice closure knowledge brief Published 02 May 2021

Prepared for preliminary research by the RIVO OPTICAL knowledge desk. Confirm cable count, splice capacity, sealing class, tray layout, protection sleeves and installation requirements against current standards and product documentation.

Custom fiber optic splice closures can be tailored in design, materials, and modular components to meet specific installation, environmental, and network requirements.Overview of Fiber Optic Splice Closures

Fiber optic splice closures (FOSCs) are devices used to connect and protect multiple fiber optic cables while safeguarding splices from environmental hazards such as moisture, dust, and temperature fluctuations . They are essential in PON, FTTx, and long-distance network deployments, supporting branching, mid-span access, and capacity expansion . Closures come in various forms, including dome closures (single-end entry), inline closures (dual-end entry), and hybrid designs that integrate patch panels for preterminated cables .

Customization Options

Custom processing of FOSCs involves adapting standard closures to meet unique spatial, technical, or industry-specific requirements :

  • Housing Geometry: Modifying shapes for confined spaces, low ceilings, or angled connections.
  • Material Selection: Using antistatic, chemical-resistant, or fire-retardant materials for specialized environments.
  • Color Coding: Aligning with corporate design or industry-specific identification.
  • Modular Components: Adjusting tray types, port configurations, and subrack layouts using systems like VarioConnect, SlimConnect, or EasyConnect to accommodate unusual fiber types or high-density splicing .
  • Sealing Methods: Choosing between mechanical or heat-shrink seals to ensure IP68-level protection and long-term reliability .
Production and Assembly Process

The production of a custom FOSC typically follows these steps :

  1. Design and Mold Fabrication: Using CAD to create molds from aluminum or steel, tailored to the closure's geometry and component layout.
  2. Material Preparation: Selecting appropriate plastics (PP, ABS, PC) and accessories based on environmental and mechanical requirements.
  3. Injection Molding: Forming a seamless, water-tight closure by injecting liquid plastic into the mold and allowing it to solidify.
  4. Component Assembly: Installing fiber optic cables, splice trays, connectors, and sealing materials inside the molded closure.
  5. Quality Control: Conducting pressure tests, visual inspections, and other evaluations to ensure durability, sealing integrity, and compliance with industry standards.
  6. Packaging and Delivery: Using protective packaging to ensure safe transport to the installation site.
Fiber Management and Splicing Considerations

Inside the closure, fiber management is critical to prevent stress or damage :

  • Properly strip cable jackets and secure strength members.
  • Arrange fibers in trays without pinching or excessive bending.
  • Ground metallic components and shielded fibers as required.
  • Ensure sufficient fiber length for splicing and storage in trays.
Benefits of Custom Processing

Custom FOSCs provide several advantages:

  • Optimized fit for challenging installation environments.
  • Enhanced protection against environmental and mechanical stress.
  • Scalability for future network expansion.
  • Compliance with industry-specific standards and operational requirements. By combining modular design, material customization, and precise assembly, custom fiber optic splice closures ensure reliable, long-term network performance even in demanding applications .

Custom-made fiber optic splice closures - RIVO MULTITRADE OPTICAL SYSTEMS [PDF]

Custom-made fiber optic splice closures

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Related Video Reference

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Technical note

This reference is intended for preliminary fiber optic splice closure research. Compatibility, splice capacity, sealing class, tray layout, protection sleeves, installation methods, test limits and applicable standards must be verified for the specific project.

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