Optical waveguides – Optical transmission cable
Patent
1991-12-09
1993-03-30
Ullah, Akm E.
Optical waveguides
Optical transmission cable
264 15, 427163, G02B 644
Patent
active
051990946
ABSTRACT:
A method for manufacturing an optical cable characterized by forming a band of optical waveguides by mechanically combining the waveguides together and then subjecting the band to a cabling process to produce the optical cable. To reduce or eliminate torsion in the optical waveguides of the optical cable, the light waveguides are subjected to a pre-torsion prior to formation into the band in a direction opposite to the direction of torsion created by subjecting the band to a cabling process. The pre-torsion to the light waveguides is formed by an overhead haul-off of the light waveguides from a supply reel, which may be rotated to vary the amount of pre-torsion being formed.
REFERENCES:
patent: 4983013 (1991-01-01), Dotzer et al.
patent: 4985185 (1991-01-01), Mayr et al.
Yamauchi et al "Residual Stresses in Fibers in Tape-Type Optical Cable and Their Reduction"-Transactions of the Institute of Electronics & Communications Engineers of Japan, vol. E 63, No. 8, Aug. 1980, pp. 615-616.
Yamauchi et al "Residual Stresses in Fibers in Tape-Type Optical Cable and Their Reduction"-Electronics and Communications in Japan, vol. 63, No. 8, 1980, pp. 69-77.
Siemens Aktiengesellschaft
Ullah Akm E.
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