36 results about "Glass waveguide" patented technology

The invention is related to nuclear physics, medicine and oil industry, namely to the measurement of x-ray, gamma and alpha radiation; control for trans uranium nuclides in the habitat of a man; non destructive control for the structure of heavy bodies; three dimensional positron-electron computer tomography, etc.The essence of the invention is in additional ingredients in a chemical composition of a scintillating material based on crystals of oxyorthosilicates, including cerium Ce and crystallized in a structural type Lu2SiO5.The result of the invention is the increase of the light output of the luminescence, decrease of the time of luminescence of the ions Ce3+, increase of the reproducibility of grown crystals properties, decrease of the cost of the source melting stock for growing scintillator crystals, containing a large amount of Lu2O3, the raise of the effectiveness of the introduction of SCintillating crystal luminescent radiation into a glass waveguide fibre, prevention of cracking of crystals during the production of elements, creation of waveguide properties in scintillating elements, exclusion of expensive mechanical polishing of their lateral surface.

The present invention is directed to the creation of zones of permanently altered refractive index characteristics in glass waveguiding devices, including optical fibers and optical waveguides pre-existed in a glass substrate. Such zones in which the refractive index has been permanently altered are created in glass using a very high intensity laser beam which is produced by focusing the light output from an ultrafast pulsed laser at a predetermined target region in the glass. The preferred laser is a Ti:Sapphire amplified, frequency-doubled Erbium-doped fiber laser system, providing light pulses of approximately 100 femtosecond duration, each with an energy of between about 1 nanojoule and 1 millijoule, and preferably at a pulse repetition rate of between 500 Hz and 1 GHz. The repetition rate is chosen to deliver pulses faster than the thermal diffusion time over the dimensions of the volume element being modified. This latter process is to accumulate heat to the point of liquefying the material in order to increase material compliance to the femtosecond writing process and increase the subsequent thermal barrier to relaxation of the written structural element and thereby increase the lifetime of the device or structural function. One or more zones of permanently altered refractive index characteristics can be formed in a waveguiding device, such as an optical fiber by utilizing a focused, pulsed, laser light source which generates a focal region having an intensity greater than the threshold for inducing permanent refractive index changes in the device. The focal region is aligned with the device and relative movement between the focal region and the device has the effect of sweeping the focal region across the device in a predetermined path. The result is a zone within the device in which the refractive index characteristics of the device have been permanently altered so as to control amplitude, phase, spatial propagation or polarization states of light within the material.

An integrated module for a fiber optic gyroscope system includes a fiber optic sensing coil arranged to sense rotations about a sensing axis via the Sagnac effect comprises a substrate, an optical waveguide formed on the substrate, a light source comprising a doped waveguide formed on the substrate. The light source and the optical waveguide are arranged to produce counterpropagating light waves in the fiber optic sensing coil. The light source may be formed as a rare earth doped polymer waveguide or as a rare earth doped glass waveguide.

A method for making optical hollow-glass waveguide. The present invention comprises a glass drawing and following metal coating processes. The waveguide produced by this method provides low transmission loss at target wavelengths in ultraviolet, visible, and infrared regions when the wall thickness of the glass tube is well controlled so as to fit to the designed parameter.

The present invention concerns waveguides made from porous glass which have been doped with certain selected materials which exhibit optical properties. In the context of the invention, the selected materials are optical materials which exhibit optical activity or a Faraday effect, such as an electro-optic material, and more specifically a polymer. Devices made according to the present invention can be used as phase modulators.

An optical waveguide includes a glass waveguide body and a waveguide core through which optical radiation propagates. The waveguide core includes: a body portion extending within the waveguide body, a coupling portion extending at the surface of the waveguide body, and an S-bent intermediate portion coupling the body portion and the coupling portion. An optical coupling arrangement (e.g., for coupling one or more optical fibers to a silicon photonics device) includes one such optical waveguide and a second optical waveguide including a respective waveguide body and one or more waveguide members. The second optical waveguide is coupled with the first optical waveguide with the waveguide member(s) facing the coupling portion of the first optical waveguide.

The glass waveguide assembly includes a substrate with glass optical waveguides formed in the body of the glass substrate without adding or removing any glass from the substrate body. The glass optical waveguides run generally from a front-end section to a back-end section. A protective coating is formed over at least a portion of the top surface of the glass substrate where the glass optical waveguides reside. Optical connectors are formed at or adjacent the back end at corresponding connector regions. Each connector includes an end portion of at least one of the glass optical waveguides. In some configurations, the glass waveguide assembly includes a bend section that facilitates forming an optical interconnection in a photonic system between an optical-electrical printed circuit board and photonic integrated circuit.

The invention discloses a method for producing glass optical waveguide with ion mask. Wherein, first using K+ ion exchange technique to form a K+ disperse area on the glass basic plate, as the mask of following ion exchange; then using mask inversion technique to form a film on the K+ ion disperse area, to baffle the dispersion of high-refractive ion that though the K+ disperse area in the following ion exchange process; at least, using fused salt with high-polarized ion to exchange ion, and attain high-refractive ion disperse area with improved shape on the glass basic plate. The invention can avoid film preparation and selective erosion technique; and since the film can completely stop the dispersion of high-polarized ion through the ion mask, the invention can attain better bar optical waveguide.

The invention relates to the field of solar power generation and particularly relates to a fluorescence waveguide light condensation module, a solar power generation device and application thereof. The fluorescence waveguide light condensation module comprises two opposite glass waveguide layers, a fluorescencelight condensationwaveguide layer and a reflection layer, wherein the fluorescencelight condensationwaveguide layer and the reflection layer are successively arranged between the two glass waveguide layers; the light condensationwaveguide layer comprises two fluorescence layers and an optically thinner medium layer arranged between the two fluorescence layers; the optical density of the optically thinner medium layer is smaller than that of the fluorescence layers. The invention also provides the solar power generation device and the application thereof. The solar power generation device with high sunlight utilization rate is produced by connecting the fluorescence waveguide light condensation module with a photoelectric conversion element; the solar power generation device can be used as building glass. The fluorescence waveguide light condensation module and the solar power generation device have the advantages of simple structure, simple preparation process, low production cost and high sunlight utilization rate.

The invention relates to a double-depth imaging method based on polarized light sensitive grating AR glasses waveguide. A first image source emits light, and the light is changed into P light througha polarization device to enter a first coupling grating; after being refracted by the first coupling grating, the light is totally reflected on a first waveguide substrate, and finally the light is introduced into the coupling grating; the light is led out by the coupling grating and then is changed into S light through a second half-wave plate, and the light is emitted through the output gratingwithout influence, so that optical imaging of one depth is formed in a human eye; a second image source emits light, and the light is changed into S light through the polarization device and enters asecond coupling grating; the light does not change when passing through the first coupling grating, and the light is refracted by the second coupling grating and is totally reflected on a second waveguide substrate, and finally the light is guided into the output grating, and the light is guided out by the output grating and then forms optical image of another depth in the human eye. The method has the advantages of simplicity, convenience, stability, high response speed and the like.

A hybrid cladding for optical fibers used in short data networks. The hybrid cladding surrounds a glass waveguide fiber and is surrounded by a primary coating. The hybrid cladding has low adhesion to the primary coating. The low adhesion permits stripping of the primary coating from the hybrid cladding without damaging the hybrid cladding and without leaving residue of the primary coating on the surface of the hybrid cladding. The hybrid cladding may be formed by curing a composition that includes a monomer with a radiation-curable functional group, a slip component, and a photoinitiator. The radiation-curable functional group may be a (meth)acrylate group. The slip component may contain silicon or silicone and may further contain a radiation-curable functional group. Silicone di(meth)acrylate is an illustrative slip component.

The glass waveguide light amplifier includes two passive light waveguides, each of which consists of glass substrate and greater refraction index area on the surface or inside the substrate; and one active light waveguide, which consists of substrate with at least one kind of infiltrated phosphate or silicate of La family element and greater refraction index area on the surface or inside the substrate. Two passive light waveguides are set on two sides of the active light waveguide and the greater refraction index areas in the light waveguides are connected together. The glass waveguide light amplifier of the present invention has high performance/cost ratio, high integration level, small size and great gain in unit length, and may be used in high-capacity fiber communication system.

The invention discloses a waveguide formation method and an SF6 gas passive sensor comprising the waveguide. The waveguide formation method comprises the following steps: growing an insulation layer on a silicon substrate; spin coating photoresist on the surface of the insulation layer; photoetching the photoresist and forming a waveguide structure; carrying out vapor deposition of glass in the waveguide structure to form a glass waveguide layer; removing the photoresist that is not photoetched and the glass outside the waveguide structure through the stripping technology to form a waveguide main body; spin coating a polymer on the waveguide main body; photoetching the polymer and carrying out curing to form cavity pillars; and processing the tops of the cavity pillars through the bondingtechnology to form cavities, wherein the multiple cavities are connected to form a waveguide. The waveguide formation method and the SF6 gas passive sensor comprising the waveguide, through passive design, increase product life, improve sensor sensitivity and have a real-time online monitoring function.

The invention relates to a multi-depth imaging method for polarization-sensitive AR glasses waveguide. The light emitted by the image source becomes linearly polarized light through the polarizing device and enters the corresponding in-coupling grating of the waveguide substrate. The light is refracted by the in-coupling grating, totally reflected on the waveguide substrate, and finally introduced into the out-coupling grating area; no electric field is applied to the liquid crystal layer In the case of control, the linearly polarized light is refracted through the outcoupling grating, and then exported through the liquid crystal layer and the output grating, thereby forming a deep optical image in the human eye; The grating is refracted, and then the polarization rotation occurs through the liquid crystal layer, and then the output grating is refracted to form an optical imaging different from the original linearly polarized light, so as to realize the optical imaging control of two depths. The invention has the advantages of simplicity, convenience, stability, fast response speed and the like.