Provided is a resin composition for optical waveguide cores, the resin composition including liquid epoxy resin, and solid epoxy resin, in which a coefficient of variation calculated from a weighted average value of a refractive index of the liquid epoxy resin and a refractive index of the solid epoxy resin is 2.10% or less.

Provided is a resin composition for optical waveguide cores, the resin composition including liquid epoxy resin, and solid epoxy resin, in which a coefficient of variation calculated from a weighted average value of a refractive index of the liquid epoxy resin and a refractive index of the solid epoxy resin is 2.10% or less.

Embodiments relate to a polymer waveguide including a substrate, a cladding layer made of a first polymer, formed on the substrate, wherein a first monomer is polymerized into the first polymer, and the cladding layer has a groove for the waveguide by removing part of the cladding layer, and a core accommodating graphene therein, formed on the groove, a method for manufacturing the same, and a passively mode-locked laser based on the polymer waveguide.

In some embodiments, a head-mounted augmented reality display system comprises one or more hybrid waveguides configured to display images by directing modulated light containing image information into the eyes of a viewer. Each hybrid waveguide is formed of two or more layers of different materials. The thicker of the layers is a highly optically transparent “core” layer, and the thinner layer comprises a pattern of protrusions and indentations to form, e.g., a diffractive optical element. The pattern may be formed by imprinting. The hybrid waveguide may include additional layers, e.g., forming a plurality of alternating core layers and thinner patterned layers. Multiple waveguides may be stacked to form an integrated eyepiece, with each waveguide configured to receive and output light of a different component color.

An optically transmissive light directing sheeting and daylight control structures employing the same. The light directing sheeting includes a core light redirecting layer employing TIR surfaces embedded into the sheeting and may further include one or more outer layers having light diffusing surface microstructures. The TIR surfaces intercept and reflect a portion of sunlight propagating through the core layer such that the light directing sheeting partially transmits and partially redirects the sunlight towards a plurality of divergent directions, forming relatively high bend angles.

A process to enhance the performance of plastic optical fiber to operate with a high data rate (e.g., at least 1 gigabit per second) at high temperature (e.g., 100 degrees Celsius) for airplane avionic systems. Gigabit plastic optical fiber has a core including a dopant that enables data transmission at gigabit rates. The enhancement process uses rapid thermal cooling of the gigabit plastic optical fiber to stabilize the polymer matrix of the fiber. This rapid cooling treatment blocks dopant diffusion in a high-temperature environment, thereby avoiding degradation of the fiber's bandwidth and optical loss characteristic. Such degradation typically occurs in gigabit plastic optical fiber having core and cladding made of transparent carbon-hydrogen bond-free perfluorinated polymer.

A process to enhance the performance of plastic optical fiber to operate with a high data rate (e.g., at least 1 gigabit per second) at high temperature (e.g., 100 degrees Celsius) for airplane avionic systems. Gigabit plastic optical fiber has a core including a dopant that enables data transmission at gigabit rates. The enhancement process uses rapid thermal cooling of the gigabit plastic optical fiber to stabilize the polymer matrix of the fiber. This rapid cooling treatment blocks dopant diffusion in a high-temperature environment, thereby avoiding degradation of the fiber's bandwidth and optical loss characteristic. Such degradation typically occurs in gigabit plastic optical fiber having core and cladding made of transparent carbon-hydrogen bond-free perfluorinated polymer.

There is provided an optical waveguide laminate in which an organic base material layer comprised of an insulation layer and a coverlay is laminated to one surface of an optical waveguide and in which a portion of the organic base material layer is lacking so that the optical waveguide is uncovered. Inequalities P70% and PQ25% are satisfied where P is the laser light transmittance in at least a portion of the optical waveguide, the laser light having a predetermined wavelength range, and Q is the laser light transmittance of at least a portion of the organic base material layer. In this optical waveguide laminate, the organic base material layer laminated to the optical waveguide is elaborately removed without being impaired or thermally damaged by laser machining.

There is provided an optical waveguide laminate in which an organic base material layer comprised of an insulation layer and a coverlay is laminated to one surface of an optical waveguide and in which a portion of the organic base material layer is lacking so that the optical waveguide is uncovered. Inequalities P70% and PQ25% are satisfied where P is the laser light transmittance in at least a portion of the optical waveguide, the laser light having a predetermined wavelength range, and Q is the laser light transmittance of at least a portion of the organic base material layer. In this optical waveguide laminate, the organic base material layer laminated to the optical waveguide is elaborately removed without being impaired or thermally damaged by laser machining.

There is provided a plastic optical fiber including a core and at least one layer of a clad formed on an outer circumferential surface of the core, wherein a transmission band is 100 MHz or wider, as measured under conditions of a wavelength of 650 nm and a launch NA=0.65; and a transmission loss is 350 dB/km or less, as measured under conditions of a wavelength of 650 nm and a launch NA=0.1, after exposure to an environment of a temperature of 105 C. for 1000 hours.