described are new cable designs for indoor installations wherein the cable comprises a dual - layer optical fiber buffer encasement of acrylate resin . the buffer encasement has an acrylate compliant inner layer that protects the fiber and minimizes stress transfer to the fiber ; and a hard , tough acrylate outer layer that provides crush resistance . the dual - layer optical fiber buffer encasement is wrapped with reinforcing yarn and encased in an outer protective jacket . the protective jacket is relatively thick and rigid , having a thickness of 0 . 7 - 3 . 0 mm , and a modulus greater than 240 mpa .