Optical waveguides – Optical transmission cable – Tightly confined
Patent
1995-09-19
1997-12-30
Lee, John D.
Optical waveguides
Optical transmission cable
Tightly confined
385102, 385126, G02B 644
Patent
active
057039844
ABSTRACT:
The present invention concerns an optical fiber cable containing a plurality of optical fibers split up into modules, each module being covered with a supporting sheath in contact with the outer optical fibers of the module so as to hold the optical fibers contained in said module tightly so that they are mechanically coupled to one another, the entire set of modules being disposed inside a covering made of an insulating material, which covering is in contact with the outer modules of the set of modules so as to form a compact assembly comprising all of the modules;
wherein each optical fiber has a cut-off wavelength of not more than 1,350 nm, and, at a wavelength in the vicinity of 1,550 nm, has a mode field diameter lying in the range 7 .mu.m to 9 .mu.m, and wherein each optical fiber is provided with a substantially hermetic coating on its optical cladding.
REFERENCES:
patent: 4407561 (1983-10-01), Wysocki
patent: 4909593 (1990-03-01), Harbort et al.
patent: 4930860 (1990-06-01), Tansey et al.
patent: 5155789 (1992-10-01), Le Noane et al.
patent: 5483612 (1996-01-01), Gallagher et al.
patent: 5544272 (1996-08-01), Carratt et al.
Patent Abstracts of Japan, vol. 014, No. 098 (P-1011), 22 Feb. 1990 & JP-A-01 304408 (Furukawa Electric Co. Ltd. The) 8 Dec. 1989 (see JP1304408 above).
Carratt Michel
de Vecchis Michel
Alcatel Cable
Kang Ellen Eunjoo
Lee John D.
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