公开(公告)号：JP2001194566A

公开(公告)日：2001-07-19

申请号：JP2000279228

申请日：2000-09-14

Applicant: LUCENT TECHNOLOGIES INC

Inventor： HARDWICK NATHAN E ,  JACKSON KENNETH WADE ,  LEVER CLYDE JEFFERSON JR ,  NORRIS RICHARD ,  SHEU JIM JENQTSONG ,  SMALL RICHARD DALTON JR ,  TAYLOR CARL RAYMOND ,  WEIMANN PETER A

IPC: G02B6/44 ,  H01B11/00

Abstract: PROBLEM TO BE SOLVED: To provide an optical fiber cable incorporating different sized multiple stacks of optical fiber ribbons. SOLUTION: The stacks are composed of a central stack positioned at the nearly center within the passage of a jacket and peripheral stacks positioned radially around the central stack. The difference exists between the dimension of the central stack and the dimension of one or plural peripheral stacks. A buffer container individually incorporating the peripheral stacks is intertwined in the longitudinal direction around the central stack. Inner surfaces extending in the longitudinal direction are included in respective buffer containers, these inner surfaces extend around the passage extending in the longitudinal direction, and the passage is demarcated by these inner surfaces. Individual stacks are incorporated in the passage. The considerable parts in the periphery of respective peripheral stacks are surely bounded by respective inner surfaces which are meshed with these parts.

公开(公告)号：JP2000131572A

公开(公告)日：2000-05-12

申请号：JP29577999

申请日：1999-10-18

Applicant: LUCENT TECHNOLOGIES INC

Inventor： BROWN ROBERT J ,  LEVER CLYDE JEFFERSON JR ,  SHEU JIM JENQTSONG ,  WEST DANNY EUGENE

IPC: G02B6/44

Abstract: PROBLEM TO BE SOLVED: To obtain a central core optical fiber cable of a low cabling loss having a stack of longitudinally twisted ribbons. SOLUTION: Plural optical fiber ribbons are stacked in an array form and are arranged within a tube existing at the center of the cable. A lubricating material is applied between the adjacent ribbons of the stack 200 in order to integrally holds the plural ribbons and to make the slip movement between the ribbons easy. The stack 200 of the ribbons is twisted along the longitudinal direction of the cable. The lubricant is alpha olefin oil. The stack 200 of the ribbons is twisted to one direction during a first prescribed distance and is then twisted in a reverse direction during a second prescribed distance. These distances are nearly equal to each other. An electrostatically charged powder is otherwise used as the lubricant.