The specification describes the basic design of an OPGW-cable with its main compo-nents: the fibers, the optical fiber unit and the cable armoring. Permanent downhole fiber-optic cables are critical infrastructure in wellbore monitoring systems, ensuring reliable transmission of data for applications such as distributed temperature, acoustic, and strain sensing (DTS, DAS, and DSS)βall with one 1/4-in control line. These monitoring systems help. r special alloy wires. Tensile strength of each wire lies in the ra ge of 270 to 330 KPSI. 035β in diameter or larger has a coating of zinc in excess of 0. The FEBUS Optics interrogators have been developed and optimized to meet all the challenges of well monitoring and its many applications. Our embedded softwares (on our DAS, DTS, DSS). Work with our experts to build the best solution for your environment.