ULTRAHIGH-DENSITY LARGE-CORE-NUMBER AIR-BLOWING MICRO-CABLE AND PROCESS OF MANUFACTURING THE SAME

The invention provides an ultrahigh-density large-core-number air-blowing micro-cable. The ultrahigh-density large-core-number air-blowing micro-cable comprises loose tubes formed by at most 48 pieces of 200-μm small-size optical fibers, each loose tube is used as a subunit to prepare the ultrahigh-density large-core-number air-blowing micro-cable which is advantageous in terms of low weight, small cable diameter and high optical fiber density. The ultrahigh-density large-core-number air-blowing micro-cable includes a central reinforcing piece, at least one optical unit twisting layer annularly distributed on a periphery of the central reinforcing piece and a relatively outer optical unit twisting layer twisted at a periphery formed by a relatively inner optical unit twisting layer. Each optical unit twisting layer includes a plurality of identical subunits, the subunits in different optical unit twisting layers are the same and a number of the subunits of the relatively outer optical unit twisting layer is larger than that of the subunits of the relatively inner optical unit twisting layer. Each loose tube is filled with factice, and a periphery of an outermost optical unit twisting layer is coated with an outer PE sheath.