摘要:
In plasma deposition processes for producing an optical preform according to the POD method, a cladding glass layer composed of fluorine-doped quartz glass is produced by means of a plasma torch on a cylindrical substrate body composed of quartz glass, said substrate body rotating about the longitudinal axis thereof. In this case, the plasma torch performs a reversing relative movement between two turning points (A; B) along the substrate body. In order, proceeding therefrom, to achieve a high fluorine doping in conjunction with a dopant distribution that is as uniform as possible axially, the invention proposes that a heat element has a heating effect on the region of one turning point (A; B) when the plasma torch is situated in the region of the other turning point (B; A).
摘要:
In plasma deposition processes for producing an optical preform according to the POD method, a cladding glass layer composed of fluorine-doped quartz glass is produced by means of a plasma torch on a cylindrical substrate body composed of quartz glass, said substrate body rotating about the longitudinal axis thereof. In this case, the plasma torch performs a reversing relative movement between two turning points (A; B) along the substrate body. In order, proceeding therefrom, to achieve a high fluorine doping in conjunction with a dopant distribution that is as uniform as possible axially, the invention proposes that a heat element has a heating effect on the region of one turning point (A; B) when the plasma torch is situated in the region of the other turning point (B; A).
摘要:
The invention relates to a method for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method, according to which a hydrogen-free media flow containing a glass starting material and a carrier gas is fed to a multi-nozzle deposition burner. The glass starting material is introduced into a plasma zone by the deposition burner and is oxidized therein while forming SiO2 particles, and the SiO2 particles are deposited on a deposition surface while being directly vitrified. In order to increase the deposition efficiency, the invention provides that the deposition burner (1) focuses the media flow toward the plasma zone (4) by. A multi-nozzle plasma burner, which is suited for carrying out the method and which is provided with a media nozzle for feeding a media flow to the plasma zone, is characterized in that the media nozzle (7) is designed so that it is focussed toward the plasma zone (4). The focussing is effected by a tapering (6) of the media nozzle (7).
摘要:
In a known method for the production of a blank mold for optical fibers, a fluorine-doped SiO2 enveloping glass is produced on a core glass cylinder that rotates about its longitudinal axis, wherein a silicon-containing starting substance is fed to a plasma burner, said substance is then oxidized in a plasma flame assigned to the plasma burner to obtain SiO2 particles, the SiO2 particles are deposited by layers on the enveloping surface of the cylinder of the core glass cylinder in the presence of fluorine and sintered into the enveloping glass. The invention aims at providing an economical method, which builds upon the above-mentioned method, in order to produce a blank mold from which optical multi-mode fibers (52) can be obtained. In comparison with fibers (51) produced according to standard methods, said optical multi-mode fibers are characterized by high initial transmission in the UV wavelength range and good resistance with respect to brief UV radiation, more particularly in the 210-300 nm wavelength range. According to the invention, a plasma flame that irradiates an ultraviolet light having a wavelength of 214 nm with an intensity of at least 0.9 μW—determined on the basis of plasma flame intensity measurement—is used for the formation and deposition of the SiO2 particles on the core glass.
摘要:
A measuring apparatus, in particular for measuring current, is provided. In at least one embodiment, the measuring apparatus includes a sensor and an evaluation device which is coupled or can be coupled thereto, in which the coupling is effected contactlessly, in particular by way of a transponder interface. As such, on the one hand current can be measured in a reaction-free manner, wherein on the other hand the resulting measuring apparatus can be used in a particularly flexible and versatile manner on account of the maneuverability of the components with respect to one another and on account of the relatively large possible distance between the two parts of the transponder interface.
摘要:
A key-operated switch includes a first excitation device which generates a first alternating magnetic field and has a first inductance. The key-operated switch is constructed in such a manner that the first alternating magnetic field can be used to scan a first coding of a key, with the first coding changing the first inductance of the first excitation device. The first coding is read by the key-operated switch in this manner. The key associated with the key-operated switch has a carrier element which is not electrically conductive and is not magnetizable. Arranged on the carrier element is the first coding which is made of an electrically conductive and/or magnetizable material. As a result, the key can be scanned without wear.
摘要:
An immersive audio-visual system (and a method) for creating an enhanced interactive and immersive audio-visual environment is disclosed. The immersive audio-visual environment enables participants to enjoy true interactive, immersive audio-visual reality experience in a variety of applications. The immersive audio-visual system comprises an immersive video system, an immersive audio system and an immersive audio-visual production system. The video system creates immersive stereoscopic videos that mix live videos, computer generated graphic images and human interactions with the system. The immersive audio system creates immersive sounds with each sound resource positioned correct with respect to the position of an associated participant in a video scene. The immersive audio-video production system produces an enhanced immersive audio and videos based on the generated immersive stereoscopic videos and immersive sounds. A variety of applications are enabled by the immersive audio-visual production including casino-type interactive gaming system and training system.
摘要:
A unified session detail records of a multi-hop session is provided. The multi-hop session may be established through multiple nodes in a VoIP network. Each node may generate session detail records for the legs of the multi-hop session that are connected to the node. The nodes on the path of the multi-hop call may send the record to a single node to consolidate the session detail records of the legs of the multi-hop call in the single node so that the single node can provide unified session detail records of the multi-hop session. By providing unified session detail records, the user does not need to track down the nodes that are on the path of the multi-hop call to obtain the session detail records of the multi-hop session.