Single mode optical fiber ribbon cable
First Claim
1. An optical fiber cable comprising at least one optical fiber ribbon contained within a sheath, the ribbon comprising a multiplicity of optical fibers maintained substantially parallel with each other within a flexible sheathing, the optical fibers adapted for operation at least at one predetermined operating wavelength, CHARACTERIZED IN THAT the optical fibers have a first and a second operating wavelength of about 1.3 μ
- m and about 1.55 μ
m, respectively, with the optical fibers being single mode optical fibers at both the first and the second operating wavelength, the optical fiber cable having an average cabling loss of at most about 0.1 dB/km at both the first and the second operating wavelength.
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Accused Products
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° C. and/or fibers having a coating that comrises a low modulus (less than about 1.5·106 Pa at 20° C.) inner coating and a high modulus (more than 108 Pa at 20° 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.
50 Citations
7 Claims
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1. An optical fiber cable comprising at least one optical fiber ribbon contained within a sheath, the ribbon comprising a multiplicity of optical fibers maintained substantially parallel with each other within a flexible sheathing, the optical fibers adapted for operation at least at one predetermined operating wavelength, CHARACTERIZED IN THAT the optical fibers have a first and a second operating wavelength of about 1.3 μ
- m and about 1.55 μ
m, respectively, with the optical fibers being single mode optical fibers at both the first and the second operating wavelength, the optical fiber cable having an average cabling loss of at most about 0.1 dB/km at both the first and the second operating wavelength. - View Dependent Claims (2, 3, 4, 5, 6)
- m and about 1.55 μ
-
7. An optical fiber cable, the cable comprising at least one optical fiber ribbon contained within a sheath, with voids between the optical fiber ribbon and the sheath, a filling material at least partially filling the voids, the filling material having a critical yield stress of less than about 70 Pa at 20°
- C., the optical fiber ribbon comprising first and second plastic laminate elements, with a multiplicity of optical fibers maintained between the laminate elements, the laminate elements being mutually adhered, the optical fibers being maintained substantially parallel to each other, at least some of the optical fibers being coated optical fibers, the coating comprising at least an inner coating and an outer coating, the inner coating contactingly surrounding the optical fiber and having a modulus of less than 1.5×
106 Pa at 20°
C., and the outer coating surrounding the inner coating and having a modulus greater than 108 Pa at 20°
C., the optical fibers being single mode optical fibers at operating wavelengths of about 1.3 μ
m and about 1.55 μ
m, the cable having an average cabling loss of at most about 0.1 dB/km at both the operating wavelengths.
- C., the optical fiber ribbon comprising first and second plastic laminate elements, with a multiplicity of optical fibers maintained between the laminate elements, the laminate elements being mutually adhered, the optical fibers being maintained substantially parallel to each other, at least some of the optical fibers being coated optical fibers, the coating comprising at least an inner coating and an outer coating, the inner coating contactingly surrounding the optical fiber and having a modulus of less than 1.5×
Specification