Submarine optical cable and preparation method thereof

The invention provides a submarine optical cable and a preparation method thereof. The submarine optical cable includes: a center reinforcement; the plurality of circular optical fiber ribbons surround the periphery of the central reinforcing piece in a stranded manner; the inner protective layer is filled between the central reinforcing piece and the round optical fiber ribbon and on the periphery of the round optical fiber ribbon, and is combined with the central reinforcing piece and the round optical fiber ribbon into a whole; the first armor layer is arranged on the periphery of the inner protective layer; and an outer cover layer provided on the outer periphery of the first armor layer. According to the technical scheme, the submarine optical cable can solve the problem that a traditional submarine optical cable consumes time for distinguishing due to the fact that a stainless steel optical unit is arranged. 本发明提供了一种海底光缆及其制备方法。该海底光缆包括：中心加强件；多个圆光纤带，以绞合形式围绕在中心加强件的外周；内护层，填充在中心加强件和圆光纤带之间以及圆光纤带的外周，与中心加强件和圆光纤