An illumination system generating light having at least one wavelength within 200 nm a plurality of nano-sized structures (e.g., voids). The optical fiber coupled to the light source. The light diffusing optical fiber has a core and a cladding. The plurality of nano-sized structures is situated either within said core or at a core-cladding boundary. The optical fiber also includes an outer surface. The optical fiber is configured to scatter guided light via the nano-sized structures away from the core and through the outer surface, to form a light-source fiber portion having a length that emits substantially uniform radiation over its length, said fiber having a scattering-in- duced attenuation greater than 50 dB/km for the wavelength(s) within 200 nm to 2000 nm range.

This invention provides a water-based elastomeric composition free from aromatics or similar solvents comprising: an elastomer, a thickener, titanium dioxide, an antioxidant, a fungicide, water and optionally a coloring agent. The composition further comprises a corrosion inhibitor and may be impregnated to a textile material, preferably a fiber glass textile.

This invention provides a water-based elastomeric composition free from aromatics or similar solvents comprising: an elastomer, a thickener, titanium dioxide, an antioxidant, a fungicide, water and optionally a coloring agent. The composition further comprises a corrosion inhibitor and may be impregnated to a textile material, preferably a fiber glass textile.

An optical fiber comprises a glass fiber having a core and a cladding with which the core is covered, and a coating resin layer with which the glass fiber is covered, the coating resin layer having a colored layer of a thickness of 10 ?m or more, wherein a change rate of a yellow index of the coating resin layer after aging due to temperature and humidity under an environment of 85? C. and 85% RH for 30 days is 5 or less per day.

An optical fiber comprises a glass fiber having a core and a cladding with which the core is covered, and a coating resin layer with which the glass fiber is covered, the coating resin layer having a colored layer of a thickness of 10 ?m or more, wherein a change rate of a yellow index of the coating resin layer after aging due to temperature and humidity under an environment of 85? C. and 85% RH for 30 days is 5 or less per day.

An optical fiber ribbon is intermittently connected in a length direction by an intermittent connection which includes a polyol having a weight-average molecular weight of 3000 to 4000 in a specific amount relative to the entire intermittent connection and which has Young's modulus at 23 C. within a specific range. When collectively unitizing optical fiber ribbons to form an optical fiber cable, an optical fiber ribbon is formed which maintains advantages of the optical fiber ribbon and which prevents cracks of the intermittent connection and detachment of the intermittent connection from a colored optical fiber core when the cable is subjected to repetitive ironing.

An optical fiber ribbon is intermittently connected in a length direction by an intermittent connection which includes a polyol having a weight-average molecular weight of 3000 to 4000 in a specific amount relative to the entire intermittent connection and which has Young's modulus at 23 C. within a specific range. When collectively unitizing optical fiber ribbons to form an optical fiber cable, an optical fiber ribbon is formed which maintains advantages of the optical fiber ribbon and which prevents cracks of the intermittent connection and detachment of the intermittent connection from a colored optical fiber core when the cable is subjected to repetitive ironing.

A resin composition for colored coating on an optical fiber contains a photopolymerizable compound, and a photopolymerization initiator, in which the photopolymerization initiator contains an acyl phosphine oxide compound that is in a liquid state at 25? C.

A resin composition for colored coating on an optical fiber contains a photopolymerizable compound, and a photopolymerization initiator, in which the photopolymerization initiator contains an acyl phosphine oxide compound that is in a liquid state at 25? C.

An optical fiber comprises a glass fiber, and a coating resin layer with which the glass fiber is covered, the coating resin layer has a plurality of layers, the plurality of layers includes a first layer being in contact with the glass fiber, and a longest diameter at ?40? C. of a void formed in the first layer is 100% or more and 300% or less of a longest diameter at 23? C. thereof, or a longest diameter at ?40? C. of a void formed in the first layer is 100% or more and 600% or less of a longest diameter at 23? C. thereof, and a Young's modulus of the first layer is 0.3 MPa or less.