Manuel C Santana

US Patent:

47446315, May 17, 1988

Filed:

Aug 31, 1987

Appl. No.:

7/091327

Inventors:

Bernard R. Eichenbaum - Basking Ridge NJ
Charles H. Gartside - Lilburn GA
Manuel R. Santana - Doraville GA

Assignee:

American Telephone and Telegraph Company, AT&T Bell Laboratories - Murray Hill NJ

International Classification:

G02B 644

US Classification:

350 9623

Abstract:

A single mode optical fiber ribbon cable is disclosed. In preferred embodiments, the cable comprises a filling compound having a critical yield stress less than about 70 Pa at 20. degree. C. and/or fibers having a coating that comrises a low modulus (less than about 1. 5. multidot. 10. sup. 6 Pa at 20. degree. C. ) inner coating and a high modulus (more than 10. sup. 8 Pa at 20. degree. C. ) outer coating. Communication cable according to the invention can have low cabling loss, is adapted for array joining, can have high fiber density, and can advantageously be used in short-haul applications such as for metropolitan trunk lines or loop, as well as for long-haul applications.

US Patent:

52341984, Aug 10, 1993

Filed:

Jun 25, 1991

Appl. No.:

7/720988

Inventors:

Albert L. Hale - Berkeley Heights NJ
Manuel R. Santana - Roswell GA
Kirk P. Wells - Glen Gardner NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

B65H 5900

US Classification:

2541344

Abstract:

Optical fiber (20) which may be disposed in the form of a ribbon (28,30), for example, is caused to become disposed in a conduit (42) such as a duct which may exist in the field by introducing the optical fiber and a pressurized liquid transporting medium (37) into the conduit. The liquid transporting medium is effective to cause the optical fiber to be moved along in the conduit to cause a leading end of the fiber to emerge from a far end of the conduit and be accessible for connective arrangements, for example.