In high voltage engineering, ASU optical cable are commonly used for underground installations, providing reliable communication and monitoring of electrical infrastructures. These cables are designed to withstand harsh underground conditions, including moisture, chemicals, and. tions (one at each end of the line to connect to the alternating current transmission system). Buried HVDC lines, or conductors connect to DC to AC converter stations that would be sited outside the highway right-of-way (ROW). Curr ntly, there are a limited number of industry documents that address the requirements for optical fiber cables near high voltage circuits. An OPGW cable contains a tubular structure with.