A system for precoating a preform for drawing optical fiber including a diameter sensor to determine a diameter of pulled optical fiber, a cooling system to cool the optical fiber once it is pulled from a furnace, a coating system to apply a coating to the optical fiber once it has cooled and an ultra-violet lamp to cure the coating.

A method of forming a metallized mirror coating on a light diffusing optical fiber (110) includes contacting an end face (118) of a second end (114) of a light diffusing optical fiber (110) with a metallized mirror precursor. The light diffusing optical fiber (110) includes a first end (112) opposite the second end (114), a core (120), a polymer cladding (122) surrounding the core (120) and coplanar with the core at the end face (118) of the second end (114), an outer surface (128), and a plurality of scattering structures (125) positioned within the core (120), the polymer cladding (122), or both, that are configured to scatter guided light toward the outer surface (128) of the light diffusing optical fiber (110). The method also includes heating the metallized mirror precursor such that the metallized mirror precursor bonds to the core (120) and the polymer cladding (122) at the end face (118) of the second end (114) thereby forming a metallized mirror coating on the end face (118) of the second end (114).

A method of forming a metallized mirror coating on a light diffusing optical fiber (110) includes contacting an end face (118) of a second end (114) of a light diffusing optical fiber (110) with a metallized mirror precursor. The light diffusing optical fiber (110) includes a first end (112) opposite the second end (114), a core (120), a polymer cladding (122) surrounding the core (120) and coplanar with the core at the end face (118) of the second end (114), an outer surface (128), and a plurality of scattering structures (125) positioned within the core (120), the polymer cladding (122), or both, that are configured to scatter guided light toward the outer surface (128) of the light diffusing optical fiber (110). The method also includes heating the metallized mirror precursor such that the metallized mirror precursor bonds to the core (120) and the polymer cladding (122) at the end face (118) of the second end (114) thereby forming a metallized mirror coating on the end face (118) of the second end (114).

An optical communication cable includes a jacket having an interior surface that defines a cable jacket internal cross-sectional area and a plurality of optical fibers, wherein less than 60% of the cable jacket internal cross-sectional area is occupied by the cross-sectional area of the plurality of optical fibers. A scaffolding structure is provided adjacent to and supporting the jacket such that when the jacket is subjected to a burn and melts, the melted jacket material bonds to the scaffolding structure rather than sloughing off.

An optical communication cable includes a jacket having an interior surface that defines a cable jacket internal cross-sectional area and a plurality of optical fibers, wherein less than 60% of the cable jacket internal cross-sectional area is occupied by the cross-sectional area of the plurality of optical fibers. A scaffolding structure is provided adjacent to and supporting the jacket such that when the jacket is subjected to a burn and melts, the melted jacket material bonds to the scaffolding structure rather than sloughing off.

The present application provides a process of fabrication of erbium and ytterbium-co-doped multielements silica glass based cladding-pumped fiber for use as a highly efficient high power optical amplifier.

The present application provides a process of fabrication of erbium and ytterbium-co-doped multielements silica glass based cladding-pumped fiber for use as a highly efficient high power optical amplifier.

A coated optical fiber includes an optical fiber having a core and an outer surface, and a homogeneous polymer coating in contact with the outer surface of the optical fiber. The optical fiber and the homogeneous polymer coating are UV transparent, and a refractive index of the outer surface of the optical fiber or the homogeneous polymer coating is up to 15% less than a refractive index of the core. Coating the optical fiber includes coating an outer surface with a polymerizable material and polymerizing the polymerizerable material to yield the coated optical fiber having a homogeneous polymer coating. The optical fiber and the homogeneous polymer coating are UV transparent, and a refractive index of the outer surface of the optical fiber or the homogeneous polymer coating is up to 15% less than a refractive index of a core of the optical fiber.

A coated optical fiber includes an optical fiber having a core and an outer surface, and a homogeneous polymer coating in contact with the outer surface of the optical fiber. The optical fiber and the homogeneous polymer coating are UV transparent, and a refractive index of the outer surface of the optical fiber or the homogeneous polymer coating is up to 15% less than a refractive index of the core. Coating the optical fiber includes coating an outer surface with a polymerizable material and polymerizing the polymerizerable material to yield the coated optical fiber having a homogeneous polymer coating. The optical fiber and the homogeneous polymer coating are UV transparent, and a refractive index of the outer surface of the optical fiber or the homogeneous polymer coating is up to 15% less than a refractive index of a core of the optical fiber.

A system for precoating a preform for drawing optical fiber including a diameter sensor to determine a diameter of pulled optical fiber, a cooling system to cool the optical fiber once it is pulled from a furnace, a coating system to apply a coating to the optical fiber once it has cooled and an ultra-violet lamp to cure the coating.