摘要:
A method for producing an externally injected gain switch laser ultrashort pulse, comprising the following steps of ultrashort light pulse signals having multi-longitudinal mode characteristic produced by the gain switch laser are inputted into an optical amplifier and then amplified; a spectral component signal selector selects a narrow spectral component signal outputted by the optical amplifier, the narrow spectral component signal is within an amplified spontaneous emission noise frequency band and its central wavelength is equal to the longitudinal mode of the gain switch laser; a route of the narrow spectral component signal is used as an external seed light and reinjected into the gain switch laser via a spectral component signal feedback loop. Therefore, the oscillation of a selected single longitudinal mode within the cavity of the gain switch laser is enhanced, thereby forming an externally light injected locking.
摘要:
A method for producing ultrashort pulses from an external injection gain-switched laser comprises the following steps: inputting an ultrashort optical pulse signal having multi-longitudinal mode spectral characteristic, produced by a gain-switched laser, into an optical amplifier to amplify it; selecting, by a spectral component signal selector, a narrow spectral component signal outputted by the optical amplifier that is within an amplified spontaneous emission noise frequency band and has a central wavelength equal to one of the longitudinal modes of the gain-switched laser; and, using one part of the narrow spectral component signal as an external seed light, which is reinjected into the gain-switched laser via a spectral component signal feedback loop so that the oscillation of a selected single longitudinal mode within a cavity of the gain-switched laser is enhanced, thereby forming external light injection locking, another part of the narrow spectral component signal being used as a required ultrashort pulse.
摘要:
The present invention relates to an adaptive and all-optical method for data packet rate multiplication compatible with multiple data rates and/or multiple communication protocols. By performing a real-time pulse width compression on an original electronic or optical packet from an end user or a network interface device, the method generates an optical packet having an identical rate with the original packet while the duration of each pulse being significantly reduced. Then, by eliminating any redundant idle time due to the pulse width compression, the method also shortens data period and thus makes the rate of packet multiplied. The present invention addresses the technical problem of limited data rate in EO/OE conversion as known in the prior art and solves fundamentally the interconnection and communication between networks or systems of different data rates and/or protocols. The method of the present invention thus enables the design of an ultrahigh rate all-optical communication system and network transparent in rate and protocol.
摘要:
The present invention relates to an adaptive and all-optical method for data packet rate multiplication compatible with multiple data rates and/or multiple communication protocols. By performing a real-time pulse width compression on an original electronic or optical packet from an end user or a network interface device, the method generates an optical packet having an identical rate with the original packet while the duration of each pulse being significantly reduced. Then, by eliminating any redundant idle time due to the pulse width compression, the method also shortens data period and thus makes the rate of packet multiplied. The present invention addresses the technical problem of limited data rate in EO/OE conversion as known in the prior art and solves fundamentally the interconnection and communication between networks or systems of different data rates and/or protocols. The method of the present invention thus enables the design of an ultrahigh rate all-optical communication system and network transparent in rate and protocol.
摘要:
A mucosa dissector comprises an outer sleeve assembly, an electric loop (2), a sliding ring (8) and a pulling cable (4). At a portion of the electric loop (2) is provided an insulating layer (1), and the rest of the electric loop is exposed so as to dissect the mucosa. The sliding ring (8) is provided on the outer sleeve assembly, and is movable axially relative to the outer sleeve assembly; an electrode plug (7) is provided on the sliding ring (8). The pulling cable (4) is movable axially to be inserted into the outer sleeve assembly. One end of the pulling cable (4) is connected with the electrical loop (2), and the other end is electrically connected with the electrode plug (7) on the sliding ring (8). The mucosa dissector can contact the tissue easily and be positioned accurately when used to dissect the submucosa tissue, which facilitates the operation, and avoids the phenomenon of burning out the healthy tissues.
摘要:
A horizontal-tube segmentation-separation apparatus has multiple parallel inclined plates, which are arranged in pairs having an upper inclined plate and a lower inclined plate. Between the inclined plate pairs are isolated plates which are parallel thereto. One or more baffles are set under the isolated plates transverse to the flow of water to block the flow of water under the isolated plates. Between the isolated plate and the upper inclined plate is a flat supporting plate which separates the water flowing region into several water channels that have a parallelogram-shaped cross-section.
摘要:
A plug-in generating system generates a searchable plug-in from text files. The system selects the text files from one or more directories of text files for inclusion in the searchable plug-in. The system converts the selected text files into a plurality of HTML files for providing enhanced search capability of the searchable plug-in. The system compresses the converted HTML files for inclusion into the searchable plug-in. The system generates table-of-contents XML file for listing the converted HTML files. The system packages the converted HTML files and the generated table-of-contents file into the searchable plug-in.
摘要:
The present invention relates to a novel composite metal oxide catalyst, a method of making the catalyst, and a process for producing synthesis gas using the catalyst. The catalyst may be a nickel and cobalt based dual-active component composite metal oxide catalyst. The catalyst may be used to produce synthesis gas by the carbon dioxide reforming reaction of methane. The catalyst on an anhydrous basis after calcinations has the empirical formula: M a m + N b n + Al c 3 + Mg d 2 + O ( am 2 + bn 2 + 3 2 c + d ) Mm+ and Nn+ are two transition metals serving as dual-active components and selected from the group consisting of Ni, Co, Fe, Mn, Mo, Cu, Zn or mixtures thereof, a+b+c+d=1, and 0.001≦a≦0.8, 0.001≦b≦0.8, 0.1≦c≦0.99, 0.01≦d≦0.99.
摘要翻译:本发明涉及一种新型复合金属氧化物催化剂,制备该催化剂的方法,以及使用该催化剂生产合成气的方法。 催化剂可以是镍和钴基双活性组分复合金属氧化物催化剂。 催化剂可用于通过甲烷的二氧化碳重整反应产生合成气。 煅烧后的无水基催化剂具有以下经验式:M am + N Nn + Al C 3 + Mg d 2 + O(am 2 + bn 2 + 3 2 c + d)Mm +和Nn + 作为双活性成分的两种过渡金属,选自Ni,Co,Fe,Mn,Mo,Cu,Zn或其混合物,a + b + c + d = 1和0.001≦̸ a≦̸ 0.8 ,0.001≦̸ b≦̸ 0.8,0.1≦̸ c≦̸ 0.99,0.01≦̸ d≦̸ 0.99。
摘要:
The present invention is a system and method for visually indexing medical data about a patient by generating an image for presentation to a user depicting a subset of the patient's body parts, with body parts having associated diagnostic data highlighted. A user may then select a highlighted body part and be presented with some or all of the associated diagnostic data. The user may manipulate the presented image, which is derived from a three dimensional model, to rotate it or zoom is to expose more body parts, or more detailed body parts depicting child body parts associated with the diagnostic data. The system or method may employ a patient index comprising a hierarchical graph with nodes corresponding to body parts and associated with diagnostic data for those body parts.
摘要:
A Cooperative Grid Based Picture Archiving and Communication System (Grid PACS for short) is a multimedia (imaging) medical information archiving, communication and application system used in hospitals. Based on the existing PACS servers, workstations, or other networked multimedia image management systems, it adds and integrates grid-based network functionality into the existing image systems to form new grid-based image communication and management system.It uses service-oriented and event-driven concepts and methods to design and implement a new grid-based image communication and management system to solve the problems encountered in distributing archived image information, coordinating work and managing in a virtually centralized way (Virtual Super-PACS) of different PACS or archiving systems under varied operating environments.