A daylight redirecting window film having a layered structure with a total thickness of less than one millimeter and having a first optically transmissive film, a second optically transmissive film approximately coextensive with the first optically transmissive film, an intermediate layer of a relatively soft optically transmissive material disposed between the first and second optically transmissive films, a parallel array of linear three-dimensional structures formed in a space between the first and second optically transmissive films, a layer of an optically transmissive adhesive coating a surface of the first optically transmissive film, and a two-dimensional pattern of light scattering surface microstructures formed in an outer surface of the second optically transmissive film. The parallel array of linear three-dimensional structures defines a parallel array of linear channels, and each of the linear three-dimensional structures has a total internal reflection wall extending transversely through a portion of the layered structure.

A light source with a linear appearance is provided. The light source has a flexible light guide that has a homogeneous light emission with high luminance and a emitting light guide. The light emitting guide has a core, in which at least one soul extends, and a transparent cladding that surrounds the core. The core and the cladding are formed from transparent plastic. The core has a higher index of refraction than the cladding. The soul is light-deflecting, light-reflecting, or light-scattering so as to scatter light guided in the light guide and to emit the light through the cladding toward the outside. The soul has a scattering length that is at most twice as large as a maximum cross-sectional dimension of the soul.

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.

Electro-optic (EO) devices having an EO polymer core comprising a first host polymer and a first nonlinear optical chromophore (NLOC); and a cladding comprising a second host polymer and a second NLOC, and methods of preparing the same; wherein the first NLOC has a first bridge covalently bonded to an electron-accepting group and an electron-donating group; wherein the second NLOC has a second bridge covalently bonded to an electron-accepting group and an electron-donating group; and wherein the second bridge is less conjugated than the first bridge such that the cladding has an index of refraction that is less than that of the EO polymer core, and wherein the second NLOC is present in the second host polymer in a concentration such that the cladding has a conductivity equal to or greater than at least 10% of the conductivity of the EO polymer core at a poling temperature.

A photonic chip is disclosed that comprises a cladding material and an edge coupler. The edge coupler comprises a composite guiding structure that comprises a plurality of substantially parallel planar layers of optical guiding material. Each layer of the composite guiding structure extends into the cladding material, wherein each layer is aligned at a first edge of the photonic chip. The layers overlap along a first axis which is perpendicular to a plane of the planar layers of optical guiding material. The photonic chip is arranged for deposition of a waveguide on the cladding material, the waveguide being arranged to at least partially overlap along the first axis with a layer of the composite guiding structure.

Also disclosed is a method of manufacturing a photonic chip.

Disclosed is an optical waveguide, for transmitting a guided optical light beam having a wavelength greater than 180 nm. The waveguide includes a core layer for guiding light made of a first material having a first index of refraction, and a cladding layer made of a thermoplastic elastomer. Also disclosed are: a medical device and also to a waveguide sensor including the optical waveguide of the invention; a method of fabrication of the optical waveguide. The method includes a step of providing a thermoplastic elastomer preform having a central longitudinal aperture for introducing a liquid polymer, before or after reducing and elongating the preform to a predetermined length and lateral dimension. The method includes a polymerizing step of the core of the formed optical waveguide; and use of the optical waveguide in association with a surgical instrument.

An acrylic composition, which has excellent flexibility at low temperature and can form a formed body whose adhesion at room temperature is suppressed, the formed body of the acrylic composition, a key sheet of a mobile telephone, and a light guide obtained from the formed body are provided. The acrylic composition contains specific long chain di(meth)acrylate (A) and mono(meth)acrylate (B), and the glass-transformation temperature (TgDMS) of the polymer of the acrylic composition is 40° C. or less. The formed body is obtained by polymerization of the acrylic composition, and the key sheet of the mobile telephone and the light guide are obtained from the formed body.

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.

Provided is an optical fiber which has exceptional heat resistance and is highly safe. This optical fiber has a core, and a sheath of a least one layer around the outside circumference of the core, the sheath including a polymer that contains a repeating unit (A) derived from a fluoroalkyl (meth)acrylate having a specific structure.