"An evaluation is made of non-optical roles that optical fibers can play in improving the performance of deepsea tether cables. Here, 'improvement' is defined in the context of compromises that must be made among conflicting system constraints during any search for a design which reduces cable diameter, while increasing cable power transmission and strength. The evaluation considers transferred power, cable length, voltage regulation, cable strength and cable diameter. Cables with 1-, 2- and 3 conductors are compared, at a common diameter of 17.3 mm (0.68") and a common length of 10 km. These parameters are compared for all three of the conductor options."
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