Abstract:
A method of making chalcogenide glass which utilizes liquid encapsulation to prevent the evaporation loss of low boiling point or high vapor pressure glass components while the glass melt is being processed.
Abstract:
A system and method for forming infrared glass optical components are provided. The system includes first (40) and second (41) mold halves having first and second respective faces. The first and second mold halves are configured to be removably coupled such that the first face and the second face form an interface that defines a lens-shaped cavity (406). A tapered surface (401a) of the first face cooperates with a tapered surface (401b) of the second face to enhance centering of the first face with respect to the second face.
Abstract:
The invention relates to a compact arrangement for the production of optical multiwave signals which is simple to use and economical to produce compared to devices of prior art. The invention relates to an arrangement for the production of optical multiwave signals comprising at least one pump source (1) producing pump pulses and a multi-core photonic crystal fibre (MCPCF) (3) made of N cores and capillaries arranged around the core, said capillaries being made of a material having a refractive index smaller than that of the cores. Each core forms a waveguide with the capillaries arranged around said core and all waveguides have minimum differences in the effective refractive index. The pump source and the MCPCF are connected to each other in such a manner that the pump pulses are sent to all the surfaces of the MCPCF and when the pump pulses pass through the individual waveguides, idle pulses with different discrete wavelengths are produced by means of a four-wave mixer.
Abstract:
A system and method for preparing chalcogenide glass are provided that allow for larger quantities of glass to be produced with lower production costs and less risks of environmental hazards. The system includes a reaction container operable to hold chalcogenide glass constituents during a glass formation reaction, a stirring rod operable to mix the contents of the reaction container, a thermocouple operable to measure the temperature inside the reaction container, and a reaction chamber operable to hold the reaction container. The method includes placing chalcogenide glass constituents in a reaction container, heating the chalcogenide glass constituents above the melting point of at least one of the constituents, promoting dissolving or reaction of the other constituents, stirring the reaction melt, maintaining an overpressure of at least one atmosphere over the reaction melt, and cooling the reaction melt to below the chalcogenide glass transition temperature.
Abstract:
In general, in one aspect, the invention features a method that includes exposing a surface to a first gas composition under conditions sufficient to deposit a layer of a first chalcogenide glass (240) on the surface, and exposing the layer of the first chalcogenide glass (240) to a second glass composition under conditions sufficient to deposit a layer of a second glass (230) on the layer of the first chalcogenide glass, wherein the second glass is different from the first chalcogenide glass.
Abstract:
The present invention relates to a process for producing sulfide glass or sulfide glass ceramic each capable of conducting a lithium ion, comprising subjecting metallic lithium, sulfur as a simple substance and phosphorus as a simple substance as starting rawmaterials, which constitute the sulfide glass and sulfide glass ceramic, to mechanical milling to thereby convert them into sulfide glass or sulfide glass ceramic; and a whole solid type cell using the above-mentioned sulfide glass ceramic as a solid electrolyte. According to the present invention, it is made possible to produce sulfide glass and sulfide glass ceramic which are each capable of conducting a lithium ion and which have high electroconductivity at room temperature by a simple and advantageous process from starting raw materials being easily available and inexpensive.
Abstract:
Apparatus (10) is provided for drawing a self-aligned core fiber (34) free of surface contamination and inserting the core fiber (34) into a cladding material (33) to make an optical fiber preform. Single or multi-mode optical fibers having high quality core-clad interfaces can be directly drawn from the preforms described herein.
Abstract:
A core glass rod (54) and a cladding glass rod (56) are melted in a furnace (50). The melts flow together to an orifice fitted with a plug (62). The plug (62) is removed from the furnace and a core/clad fiber is drawn from the confluence.