Fiber Optic Splice Closure (FOSC) Manufacturer

Fiber Optic Splice Closure Manufacturer for FTTH & Outdoor Networks

Fiber optic splice closures are used to protect and manage fiber splicing points in outdoor networks. Available in dome and horizontal types, they provide waterproof, dustproof, and durable solutions for FTTH, telecom, aerial, duct, and direct burial applications.

What Is a Fiber Optic Splice Closure?

A Fiber Optic Splice Closure (FOSC) is a protective enclosure designed to secure fiber splicing points and ensure stable signal transmission in outdoor fiber networks.

These closures are essential for protecting optical fibers from environmental factors such as:

Water and moisture

Dust and dirt

UV exposure

Mechanical stress

Fiber splice closures are widely used in:

FTTH (Fiber to the Home) networks

Telecom backbone and access networks

Aerial, duct, and direct burial installations

Outdoor fiber distribution systems

They ensure long-term reliability, low signal loss, and efficient fiber management.

Fiber Optic Splice Closure Optical Horizontal Type
The fiber optic splice closure optical horizontal type SP-GJS-H020 combines compact size, high capacity and straightforward installation into a dependable solution for outdoor fiber networks.Whether
GJS-M9/JFT-BS Dome Closure
The GJS-M9/JFT-BS Dome Closure is a compact and high-performance fiber splice enclosure.. It protects and organizes fiber connections in outdoor and underground environments.. As a dome-type
GJS-M9/JFT-B Dome Closure
The GJS-M9/JFT-B Dome Closure is a durable and flexible fiber splice enclosure.. It protects fiber optic cable splices in various network environments.. Made from strong materials, it provides
GJS-M9/JFT-AS Dome Closure
The GJS-M9/JFT-AS is a high-performance dome closure for protecting fiber optic connections.. It features a strong structure, excellent sealing, and flexible fiber management.. Suitable for aerial,
GJS-M9/JFT-A Dome Closure
GJS-M9/JFT-A dome-type fiber optic splice closure is a high-capacity outdoor enclosure designed for fiber cable straight-through and branching connections. It is widely used in aerial, wall-mounted,
GJS-H020 Horizontal Fiber Optic Splice Closure
The GJS-H020 Horizontal Fiber Optic Splice Closure (FOSC) is designed for high-performance fiber cable . protection and splicing in a wide range of outdoor and indoor network applications. Engineered
GJS-H018 Horizontal Fiber Optic Splice Closure
The GJS-H018 Horizontal Fiber Optic Splice Closure (FOSC) is a robust enclosure . designed for fiber cable splicing and protection in outdoor and harsh environments.. This IP68-rated closure supports
GJS-H016 Fiber Optic Splice Closure
The GJS-H016 Fiber Optic Splice Closure is designed for high-capacity fiber management in outdoor and indoor environments. . With robust housing and IP68 sealing protection, . It supports both bunchy
GJS-H015 Horizontal Fiber Optic Splice Closure
Half-body design with mechanical sealing.. Durable PC material, anti-aging, and weather-resistant.. 4 cable ports (2 in, 2 out), fits 8–20mm cables.. IP68 rated, supports various installations..
GJS-H013 Fiber Optic Splice Closure
·In-Line Type 48 / 288 Fibers Waterproof Joint Closures. ·High-quality engineering plastic, anti-corrosion, and anti-aging.. ·IP66-rated waterproof and dustproof protection.. ·Supports ribbon and
GJS-H011 Horizontal Fiber Optic Splice Closure
·Model: GJS-H011. ·The horizontal type fiber splice closure features a flat or cylindrical housing.. ·It is designed to protect and organize optical fiber splices effectively.. ·Inside, it
9 In 9 Out Fiber Optic Splice Closure With 17 Cable Port
GJS-M17/RS-A Series. Features a unified large-capacity design with a fixed size of Φ325×510 mm, suitable for backbone networks.. Equipped with Type 3 splice trays supporting up to 72 cores per tray

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Types of Fiber Optic Splice Closures

Based on your product lineup, splice closures can be categorized as follows:

1. Dome Type Fiber Optic Splice Closure

Also known as vertical closures, these are widely used in outdoor environments.

Key features:

High sealing performance (IP68)

Suitable for aerial, pole-mounted, and underground installation

Supports large fiber capacity (up to 288 cores or more)

Typical applications:

FTTH distribution networks

Telecom backbone systems

2. Horizontal Fiber Optic Splice Closure

Inline closures designed for cable-to-cable connections.

Advantages:

Easy cable routing with multiple cable ports

Suitable for inline splicing

Ideal for duct and buried installations

3. Vertical (Dome) Joint Splice Closure

Designed for high-capacity fiber management with strong mechanical protection.

Features:

Multiple cable entry ports (e.g., 4 in 4 out, 6 in 6 out, 9 in 9 out)

Supports large-scale fiber splicing

Long-term outdoor durability

4. High-Capacity Fiber Splice Closure

Closures designed for large fiber counts.

Options include:

96 cores / 144 cores / 288 cores

Suitable for backbone and distribution networks

5. Splice & Splitter Integrated Closure

These closures combine fiber splicing and PLC splitting in one unit.

Features:

Built-in splitter slots (e.g., 1×8, 1×16)

Ideal for FTTH distribution nodes

Reduces installation complexity

6. Drop Cable Splice Closure

Specialized for FTTH drop cable applications.

Applications:

Last-mile fiber access

Subscriber connection points

Compact outdoor installations

Key Features of Fiber Optic Splice Closures

· Superior Environmental Protection

IP68 waterproof and dustproof design

UV-resistant materials

Suitable for harsh outdoor conditions

· Flexible Cable Management

Multiple cable entry and exit ports

Supports various cable diameters

Organized fiber routing

· High Fiber Capacity

From 24 cores to 288 cores and beyond

Suitable for small to large-scale networks

· Strong Mechanical Performance

Impact-resistant housing

Reliable sealing structure (heat shrink or mechanical sealing)

· Easy Installation & Maintenance

Modular splice trays

Simple opening and closing design

Reduced installation time

Applications

Fiber Optic Splice Closures are widely used in:

FTTH (Fiber to the Home) networks

Telecom backbone infrastructure

Aerial installations (pole-mounted)

Underground duct systems

Direct burial fiber networks

They are critical for ensuring stable fiber connections in outdoor environments.

Why Choose Our Fiber Optic Splice Closures?

· Complete Product Range

Dome, horizontal, vertical, and inline closures

High-capacity and splitter-integrated options

· Reliable Outdoor Performance

Designed for long-term use in harsh environments

Excellent sealing and protection

· Flexible Customization

OEM / ODM supported

Multiple cable port configurations available

· Proven Telecom Solutions

Suitable for global FTTH and telecom projects

Trusted by operators and contractors

How to Choose the Right Fiber Optic Splice Closure?

When selecting a splice closure, consider:

1. Installation Type

Aerial → Dome closure

Underground / duct → Horizontal closure

2. Fiber Capacity

24–96 cores → access network

144–288 cores → backbone network

3. Cable Ports

2 in 2 out / 4 in 4 out / 6 in 6 out / 9 in 9 out

4. Function Requirement

Splicing only

Splicing + splitter integration

5. Sealing Method

Heat shrink sealing

Mechanical sealing

FAQ

What is a fiber optic splice closure used for?

A fiber optic splice closure is used to protect fiber splicing points and ensure stable connections in outdoor fiber networks.

What are the main types of fiber splice closures?

The main types include dome (vertical) closures and horizontal (inline) closures.

Are fiber splice closures waterproof?

Yes, most closures are designed with IP68 ratings for waterproof and dustproof protection.

What is the difference between dome and horizontal closures?

Dome closures are vertical and ideal for aerial installations, while horizontal closures are inline and suitable for duct or buried applications.

What fiber capacity do splice closures support?

They typically support from 24 cores up to 288 cores or more depending on the model.

Can splice closures integrate PLC splitters?

Yes, some models include built-in PLC splitter slots for FTTH distribution.

Spring Optical Communication is one of the largest and best fiber optic splice closure manufacturers and suppliers with rich experience. Welcome to buy our high quality products or wholesale our customized fiber optic splice closure in stock with our factory. Also, free sample is also available if necessary.

Fiber Optic Splice Closure