Direct burial fiber optic cable is an underground fiber optic cable specially designed for direct buried installation with steel tape or wire armor outside. Direct burial can avoid duct installation on a suitable route, but excavation, ground conditions, protection, and future maintenance affect the total cost. The cable is usually made of a plastic sheath and surrounded by a protective armor. This armored fiber optic cable protects the fiber from damage caused by rodents and other animals. In addition, the direct burial cable is also designed to be moisture-resistant, which helps prevent water from seeping into it and damaging the fibers. Direct burial cable is primarily used in direct burial in the soil or underground conduits.
Direct buried cable is placed underground without conduit. On the other hand, splices can be stored above ground in a pedestal or buried underground. Verify tensile, crush, temperature, and bend-radius limits in the exact cable datasheet. Direct burial fiber optic cable is suitable for long-distance communication applications. In addition, urban areas are also suitable for direct burial methods.
Review Your Direct Burial Cable Requirements
Send the installation conditions, fiber count, cable length, quantity, and destination. Include the mechanical and environmental requirements stated in your project specification. Ask us to confirm the suitable construction and available configuration.
Direct Burial Fiber Optic Cable Features
Save install time and labor costs
Compare direct burial, duct, and aerial installation using the actual route constraints and project costs. These cables feature steel-tape armor so that they can be installed directly into the ground eliminating the need for costly protective conduit/duct installation and fiber pulls through it.
Armor fiber cable keeps rodents out
Check the specified armor construction and any required rodent-resistance evidence for the exact model; armor should not be treated as an unconditional guarantee against animal damage.
Verify jacket and environmental ratings
The cable is protected by a polyethylene, UV-resistant jacket, allowing direct burial of the cable. In addition, the direct burial cable is also designed to be moisture-resistant, which helps prevent water from seeping into it and damaging the fibers.
Loose tube design
For a loose-tube design, check the fiber type, water-blocking construction, operating temperature range, and test requirements in the selected model documentation.
Direct Burial Fiber Optic Cable Applications
Direct burial suitability depends on the route, soil, access, utility congestion, and local requirements. It is a laying method in which the optical cables are directly buried underground by digging and slotting. This method does not require poles or underground ducts. Select the installation method through the approved project design. Directly buried optical cables are widely used in subways, tunnels, long-distance communications, inter-office communications networks, metropolitan area networks (MAN), local area networks (LAN), outdoor access networks, telecommunications, video, data transmission, cable TV, etc.
FAQ of Direct Burial Fiber Optic Cable
What are the benefits of direct burial fiber optic cable?
These cables are buried underground and protected from weather or wildlife. Therefore, it minimizes the risk of accidental damage. In addition, they stay out of sight, ideal for tight living spaces.
How to bury fiber optic cables？
The first method involves placing the cable into a buried duct. The second involves burying the cable directly underground.
How deep should direct burial fiber optic cables be buried?
The depth to which buried cables can be placed will vary depending on local conditions. Use the burial depth required by the approved route design, local authority, utility owner, and site conditions. There is no single depth recommendation suitable for every location. Confirm permits and locate existing utilities before excavation.
Can direct burial fiber optic cables be customized?
Send your project specification and required cable construction. Customization availability must be confirmed for the requested configuration.
Can I customize the color of the sheath?
Provide the required jacket color or Pantone reference so availability can be checked for your cable configuration.
Can my company’s message and logo be customized?
Send the required marking text or logo artwork. Ask for confirmation of the available printing options before ordering.
What is the minimum order length for direct burial fiber optic cable?
Request the minimum order length for the exact cable construction, fiber count, and customization requirements.
How many days is the production cycle?
Request a lead time for the confirmed configuration and quantity. Production and shipping dates must be confirmed in the quotation.
Installation reference: FOA outside-plant installation guidance. Project-specific requirements and the cable manufacturer’s instructions govern the installation.
