Patent Number: 6,332,738

Title: Fiber optic cable installation method and apparatus

Abstract: A fiber optic cable (10) is buried below ground, either by direct burial, or by being pulled through a previously buried duct. During cable burial, the instantaneous resistance between the sheath and ground (the sheath-to-ground resistance) is continuously monitored. If the instantaneous sheath-to-ground resistance drops below a prescribed value, an alarm is generated, signaling a sheath fault. During burial, the length of cable paid out and placed underground is monitored, thus providing an indication of the relative location of the sheath fault.

Inventors: Eslambolchi; Hossein (Basking Ridge, NJ), Huffman; John Sinclair (Conyers, GA)

Assignee: AT&T Corp.

International Classification: F16L 1/028 (20060101); F16L 1/06 (20060101); F16L 1/11 (20060101); F16L 1/032 (20060101); F16L 7/00 (20060101); F16L 001/028 (); G01R 031/08 ()

Expiration Date: 12/25/2018