Abstract: An optical fiber cable comprises an inner tube with strength members that are located external to, and alongside of, the inner tube. Water-blocking material is also located external to the inner tube. A sheath surrounds the strength members and the water-blocking material. The cable further comprises an optical fiber with a core, a trench surrounding the core, a cladding surrounding the trench, and a coating applied over the cladding. The cable comprises a fiber arrangement with N optical fibers (with N being an integer (e.g., 16, 32, 48, 96, etc.), of which at least one optical fiber has: a maximum effective area (Aeff) of approximately seventy-five square micrometers (˜75 ?m2) at a wavelength (?) of approximately 1550 nanometers (˜1550 nm); a maximum mode field diameter (MFD) of ˜8.8 ?m at ? of ˜1550 nm; a maximum cable cut-off ? of ˜1520 nm; and, a maximum attenuation of ˜0.180 decibels-per-kilometer (dB/km) at ? of ˜1550 nm.

Abstract: Described is a technique for the design and manufacture of MMFs. Designs are implemented so as to limit the maximum variation in z(r, ?) with respect to wavelength, where z(r, ?) is the dielectric constant weighted by the square of the wavelength. MMFs for use in CWDM applications are specifically described.

Abstract: Described is a technique for the design and manufacture of MMFs. Designs are implemented so as to limit the maximum variation in z(r, ?) with respect to wavelength, where z(r, ?) is the dielectric constant weighted by the square of the wavelength. MMFs for use in CWDM applications are specifically described.

Abstract: The specification describes multimode optical fibers with specific design parameters, i.e., controlled refractive index design ratios and dimensions, which render the optical fibers largely immune to moderately severe bends. The modal structure in the optical fibers is also largely unaffected by bending, thus leaving the optical fiber bandwidth essentially unimpaired. Bend performance results were established by DMD measurements of fibers wound on mandrels vs. measurements of fibers with no severe bends.

Abstract: Adverse hydrogen aging limitations in multiply-doped optical fibers are overcome by passivating these optical fibers using a deuterium passivation process. This treatment essentially pre-reacts the glass with deuterium so that the most active glass sites are no longer available to react with hydrogen in service. Optical fibers of main interest are doped with mixtures of germanium and phosphorus. Optimum passivating process conditions are described.

Abstract: Certain embodiments of the invention may include systems and methods for providing optical fiber coatings to reduce microbend losses. According to an example embodiment of the invention, a method is provided for coating an optical fiber to reduce microbend losses and polarization mode dispersion (PMD). The method includes applying a primary layer to the optical fiber, wherein the optical fiber comprises a core region surrounded by a cladding region. The method includes applying a secondary layer to the primary layer, and curing the primary and secondary layers, wherein the cured primary layer adheres to the cladding region with a minimum pullout adhesion of 6 N/cm, and the cured secondary layer has an in situ modulus of about 700 MPa to about 1200 MPa at room temperature.