direct burial fiber cable
https://www.wirenet-tech.com/fiber-optic-cable/
Direct Burial Fiber Cable is a fiber optic cable designed for direct burial underground. It has high durability and environmental adaptability, and does not require additional pipes or protection measures. It is often used in scenarios that require high reliability and long-distance transmission.
Applications
Backbone network construction in urban or rural areas
Communication wiring in campuses and industrial parks
Communication systems along railways, highways, and power transmission lines
