摘要:
A system for disinfecting a medical device is provided. The system includes a light source that generates light having at least one wavelength between about 100 nm and about 500 nm. The system further includes at least one cylindrical optical diffuser disposed in optical communication with at least one interior channel of a medical device, the at least one cylindrical optical diffuser having an outer surface and an end optically coupled to the light source. The at least one cylindrical optical diffuser is configured to scatter guided light through the outer surface to form a light diffuser portion having a length that emits substantially uniform radiation over its length.
摘要:
An optical waveguide may include a graded refractive index structure including a core structure, and a cladding at least partially surrounding the core structure and having an outer surface and an inner surface contacting the core structure. The core structure of the optical waveguide may have a higher refractive index than the cladding. The cladding may have a decreasing refractive index from the inner surface toward the outer surface. Optoelectronic devices that includes the optical waveguide, and methods of making the optical waveguide are also provided.
摘要:
Light diffusing optical fibers and light emitting apparatuses including light diffusing optical fibers are disclosed. In one embodiment, a light emitting apparatus includes a base, a transparent or translucent enclosure affixed to the base, a light diffusing optical fiber including a coiled filament enclosed within the enclosure, and a light source optically coupled to the light diffusing optical fiber. The coiled filament includes a glass core, an outer surface, and a plurality of light scattering structures situated within the coiled filament for scattering light through the outer surface of the coiled filament. The coiled filament has a loss in a range of 0.5 dB/turn to 10.0 dB/turn at a turn radius of less than 50 mm.
摘要:
Light diffusing optical fibers for use in ultraviolet illumination applications and which have a uniform intensity that is angularly independent are disclosed herein along with methods for making such fibers. The light diffusing fibers are composed of a silica-based glass core that is coated with a number of layers including a scattering layer. According to some embodiments multiple light diffusing fibers are bundle together and are situated inside a jacket. The jacket may incorporate scattering sites, or may include a scattering layer situated thereon.
摘要:
Light diffusing optical fibers (100) for use in ultraviolet illumination applications and which have a uniform color gradient that is angularly independent are disclosed herein along with methods for making such fibers. The light diffusing fibers (100) are composed of a silica-based glass core (110) that is coated with a number of layers including a scattering layer (130).
摘要:
A fiber sensor (130) package is disclosed. The fiber sensor package includes an interconnection (138) between a first optical fiber (132) and a second optical fiber (136) within a tubing (140) such that the first and second optical fibers are at least partially disposed within that tubing. A bonding material (142) is disposed across an edge of the interconnection around at least a part of the circumferential surfaces of the first and second fibers, holds rigid the interconnection of the first and second optical fibers. The first optical fiber may be a sapphire fiber. The sensor may be used for high temperature measurements in coal gasifiers.
摘要:
A holographic mirror 10 for re-directing an optical signal that includes a base 14 having an outer surface 16, and a plurality of discrete nano-structures 12 formed into the outer surface of the base. Each nano-structure has an out-of-plane dimension 20 that is within an order of magnitude of one or both in-plane dimensions 22. The plurality of nano-structures are configured in a repeating pattern with a predetermined spacing 18 between nano-structures for re-directing an optical signal.
摘要:
An inventive sensor is used in combination with spectroscopic techniques to detect, identify and quantify ultratrace (ppt to ppb) quantities of analytes in air or water samples. The sensor preferably comprises a photonic crystal fiber having an air hole cladding with functionalized air holes. Surface-enhanced Raman spectroscopy is a preferred spectroscopic technique. In such applications, the air holes of the fiber may be functionalized by adsorbing a self-assembled monolayer on their inner surfaces, and immobilizing metallic nanoparticles to the monolayer. The invention has chemical and biomedical applications, and utility in detecting chemical and biological agents used in warfare.
摘要:
The present invention is directed to a composite material comprising a nanoporous polymer matrix and a plurality of nanoparticles dispersed within said matrix, wherein the nanoparticles possess specified thermal properties. The resulting nanoporous polymer nanocomposite is an optical medium with tunable and controllable thermal properties, including the coefficient of thermal expansion (CTE), the thermal conductivity, and the thermooptic coefficient. Various optical articles can be made with such nanocomposite materials.
摘要:
A glass-ceramic which is substantially and desirably totally transparent, and which contains a predominant crystal phase of forsterite. The glass-ceramic is formed from precursor glasses having the following compositions, in weight percent on an oxide basis: SiO2 30-60; Al2O3 10-25; MgO 13-30; K2O 8-20; TiO2 0-10; and GeO2 0-25. The glass-ceramic may be doped with up to 1 wt. % chromium oxide to impart optical activity thereto.