Abstract: A method of exfoliating the coating of a coated optical fiber is described. A crack in the coating layer of the optical fiber is produced by bending means, cleaving the coating into a plurality of cleaved strip pieces while longitudinally enlarging the crack, and then cutting the strip pieces with an advantageous exfoliating tool. The exfoliating tool thus used is constructed to conveniently cleave the coating layer of the optical fiber and to cut the cleaved strip pieces. It does not damage the optical fiber upon exfoliating of the coating layer from the coated optical fiber, and can efficiently exfoliate the coating of the optical fiber.

Abstract: This invention relates to a high strength cable to electrically and mechaally connect a vessel or a base on the sea with submarine instruments. Such a cable is required to transfer a signal or electric power and to positively transfer to a tension member in the cable a drawing force which is applied to an outer sheath from a capstan when the cable is wound up or drawn out by the capstan. This invention has a feature in that layers 6A, 6B, 6C and 6D of lapping tape having a high friction coefficient such as rubber coated tape are provided between a tension member 7 and an outer sheath 8. This feature prevents a displacement between the tension member 7 and the outer sheath 8.