Plastic and nonmetallic article shaping or treating: processes – Outside of mold sintering or vitrifying of shaped inorganic... – Including plural heating steps
Patent
1988-03-25
1989-05-02
Lee, John D.
Plastic and nonmetallic article shaping or treating: processes
Outside of mold sintering or vitrifying of shaped inorganic...
Including plural heating steps
57 7, 57 9, 264 15, 350 9634, G02B 644
Patent
active
048262781
ABSTRACT:
An optical fiber cable (20) includes a core (21) comprising a plurality of units (22--22). Each unit is formed by a plurality of optical fibers (24--24) which are assembled together without intended stranding. The plurality of units are enclosed in a common tube (34) which provides a predetermined packing density and which is substantially parallel to the longitudinal axis of the cable. In one embodiment, a waterblocking material (36) is disposed within the tube to fill the interstices between the optical fibers and between the units. The waterblocking material is such that its critical yield stress does not exceed about 70 Pa at 20.degree. C. and such that it has a shear modulus of less than about 13 KPa at 20.degree. C. The common tube is enclosed with non-metallic or metallic strength members and a plastic inner jacket and by another layer of strength members and by a plastic outer jacket. This arrangement is such that the cable may be manufactured and installed with the optical fibers capable of moving within the cable structure to prevent undue stresses being imparted thereto which would cause unwanted microbending losses.
REFERENCES:
patent: 1987442 (1935-01-01), Harris
patent: 4172106 (1979-10-01), Lewis
patent: 4342500 (1982-08-01), Oestreich et al.
patent: 4370023 (1983-01-01), Lange et al.
patent: 4446686 (1984-05-01), Panuska et al.
patent: 4464013 (1984-08-01), Sabia
patent: 4509821 (1985-04-01), Stenger
patent: 4557560 (1985-12-01), Bohannon, Jr. et al.
Japanese Patent Application Publication 58-27104, Feb. 17, 1983.
Japanese Patent Application Publication 58-14804, Jan. 27, 1983.
Wireless World Article, vol. 82, No. 1488, Aug., 1976.
European Patent Application 0 074714, Mar. 23, 1983.
UK Patent Application GB 2106 266, Apr. 7, 1983.
European Patent Application 0 067009, Dec. 15, 1982.
Gartside, III Charles H.
Panuska Andrew J.
Patel Parbhubhai D.
American Telephone and Telegraph Company ATT&T Bell Laboratories
AT&T - Technologies, Inc.
Lee John D.
Somers Edward W.
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