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What is Fiber Optic Splice Closure and Its Roles

Fiber optic splice closures are integral to the seamless operation of FTTA (Fiber to the Antenna) and other outdoor fiber optic applications. Their design and functionality are continuously improved to meet the dynamic needs of the industry, ensuring that fiber optic networks remain robust and reliable.
Table of Contents

Defining the Fiber Optic Splice Closure

fiber optic splice closure is a pivotal device within fiber optic networks, providing a secure space for spliced fiber optic cables.

These closures safeguard optical fibers, whether they’re situated outdoors or within indoor settings.

Their robust structure and durable exterior protects the delicate splices from environmental hazards.

The Critical Role of Fiber Optic Splice Enclosures

In the construction of fiber optic networks, the fiber optic splice enclosure is indispensable.

Damage to the enclosure or infiltration of water, possibly due to adverse weather conditions. It can result in severe damage to the internal cables.

This vulnerability underscores the necessity for enclosures that are not merely tough but possess a range of protective qualities such as:

  • Temperature resilience to withstand extreme climates
  • IK10+ impact resistance
  • IP68 waterproof rating, the apex of connector waterproof standards

An enclosure’s seal must be impeccable, providing insulation, resistance to corrosive substances, and endurance against ageing and weather-induced wear.

Composition of a Fiber Optic Splice Enclosure

The effectiveness of a fiber optic splice enclosure hinges on its sealing method, which can be mechanical, heat shrinkable, gel-based, or breathable.

The structural integrity of the enclosure affects the safety and performance of the fibers within.

Designs vary, accommodating straight or branching connections, and are adaptable to multiple installation methods. Such as wall-mounting, overhead installation, or underground burial.

A standard enclosure comprises:

  • Shell: The protective barrier against external elements
  • Internal Components: The structural support for the fibers
  • Seals: The guardians against moisture and particulate ingress
  • Fusion Fiber Tray: The organized platform for fiber alignment

The internal fiber arrangement is critical, demanding flexible cabling to facilitate proper transfer between trays, crucial for maintaining signal transmission quality.

splice closure accessories

Application Introducing

Fiber Optic Splice Closures can accommodate various installation methods, including aerial, duct, and direct burial.

They support both straight-through and branching connections, which can be configured as 2-in/2-out, 4-in/4-out, and other designs. This adaptability makes them suitable for:

  • Aerial Installations: Mounted on poles, ideal for environments where need minimize ground disturbances.
  • Duct Installations: Placed within conduits to protect fiber optic cables in densely populated or urban areas.
  • Direct Burial: Directly buried underground, providing protection against environmental and mechanical stresses in rural or undeveloped areas.
Indoor and Controlled Environments

In addition to outdoor applications, Fiber Optic Splice Closures are also used indoors, particularly in terminal rooms or at main distribution frames.

Environmental Adaptability

While typically employed in indoor or sheltered outdoor environments, these closures are not generally suited for exposed outdoor settings.

Unless they possess adequate waterproofing capabilities, such as an IP68 rating.

This ensures they can withstand severe environmental conditions without compromising the integrity of the fiber splices.

The operational temperature range for indoor types is typically from -5°C to +40°C, whereas outdoor types function between -20°C and +60°C, accommodating various climatic conditions.

Styles of Fiber Optic Splice Enclosures

The design of fiber optic splice enclosures has evolved significantly, leading to various types such as cap type, horizontal (Hafur type), and flip page styles.

These designs have been refined for improved functionality and user convenience, with a focus on the ease of cable insertion and extraction.

If you need fiber optic splice closure, contact Fibconet for solution!

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