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A Guide To Understanding Fiber Optic Splice Closure(FOSC)

Date: 2024-01-11 12:15:00

No matter the size and configuration of your network, protecting its connectivity is what counts. Fiber optic splice clos ure (FOSC) provides space and protection for the fiber optic cable splicing and joint. In addition, fiber optic splice closure is designed to improve reliability, flexibility, and density and reduce installation time and cost. This article provides a comprehensive understanding of FOSC.


What is a Fiber Optic Splice Closure?
Fiber optic splice closure (FOSC) is a device used for outdoor cable distribution, splicing, storage, and splicing point protection. It is used in aerial mounting, wall mounting, pole mounting, direct buried, and pipeline laying installations.
From a construction standpoint, FOSC is composed of the enclosure shell ensuring weather protection, a fiber manager which allows routing and protection to buffer tubes, the bare optical fiber, and splices and cable entries. 

Types of FOSC
● In-Line FOSC
In-line FOSC also called horizontal FOSC has a rectangular shape that contains one or more fiber splice trays to provide space and protection for fiber optic splices. This type of closure can be used in aerial mounting, wall mounting, direct buried, and pipeline laying installations. The common fiber count of in-line FOSC  is up to 144 fibers.
In-line FOSC is designed to be waterproof and dustproof. It has good adaptability and compression resistance and is made of high-tensile construction plastic. If attached to a pole or hung from wiring, this closure needs to be held firmly in place, to avoid damage from weather and wind.

● Dome FOSC
Dome FOSC also called vertical FOSC has a round shape and is used for aerial mounting, wall mounting, pole mounting, direct buried, and pipeline laying installations. It is designed for easy installation and multiple re-entries in hot, dry, humid, and cold climates. According to the sealing method, dome FOSC is divided into the mechanical seal and heat shrink seal.

Features and Benefits
FOSC provides an advanced internal design with enough space for fiber splicing and storage, a long-lasting body with high-strength PC or modified PP engineering plastic material, a protection rating of IP68, cable ports with heat shrink sealing, one oval-shaped port for straight-through cabling, high flexibility, high scalability, easy to install and deploy, and low cost.

FOSC is used in FTTH access networks, telecommunication networks, CATV networks, local area networks (LAN), long haul networks, metro core networks, metro edge networks, metropolitan networks, etc. 


FOSC is an ideal solution for terminating and protecting the fiber trunk, feeder, distribution, and drop network. It provides a compact size, high capacity, high flexibility, and low-cost installation. Sun Telecom specializes in providing one-stop total fiber optic solutions for all fiber optic application industries worldwide. Contact us if any needs.


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