摘要:
A compound testing machine for testing mechanical properties used for an optical connector does not additionally have each testing machine for each of mechanical properties (such as a tensile force including both a straight pull and a side pull, a flex, a twist and an impact) in testing a mechanical property between optical connectors and other mechanical property between optical fibers of the optical connectors, and includes only one testing machine for simultaneously testing various mechanical properties in order to enhance a test machine's efficiency. The compound testing machine includes: a rotation part which includes a test specimen fixing portion for fixing a test specimen, a cable connected to the test specimen, and a load applying portion connected to the cable so as to provide a predetermined load to the test specimen, receives a driving force of an electric motor, and measures a tensile force and a flex; and an impact testing part which is mounted to one side of the rotation part, drops the test specimen while freely adjusting a height of the test specimen, and thus performs an impact test.
摘要:
A method of ferrules used in an optical connector for connection and short-circuit of making multichannel optical signals. Heretofore, many fiber receiving holes have been arranged along a line at regular intervals with tolerance amounting to less than 1 micron. 10 and connect two ferrules, a precisely processed cylindrical metal guide pin under 1 micron, precise pitches formed in ferrules and a metal pin guide hole are used, Consequently, it has been necessary to maintain a high degree of precision. The present invention maintains a high degree of precision by reverse direction connection dependent merely on a predetermined height a reference plane. The reference plane is formed by relatively easy plane processing as the method of maintaining precise height and directivity of flow is added to the inside of a mold.
摘要:
A compliant press-fit pin for electrically coupling a first board to a second board via a plated through hole formed in the second board, includes: an upper part for electrically fixing the first board; a lower part for electrically coupling the first board to a third board via the plated through hole formed in the second board; and a press-fit part located between said upper part and said lower part and containing a fixed beam and a compliant cantilever beam, for electrically coupling the first board fixed to said press-fit part to the second board, wherein the fixed beam and the compliant cantilever beam provide a retention force against a wall of the plated through hole, thereby electrically press-fitting the compliant press-fit pin into the plated through hole, when said press-fit part is inserted into the plated through hole.
摘要:
A method of manufacturing an optical waveguide using a laser direct writing method is disclosed. More particularly, a method for improving refractive index profile of the optical waveguide by overlapping two or more beams using Gaussian laser beam is provided. In addition, it can accomplish an improved waveguide characteristics such as an offset structure of an S-bend type optical waveguide and an asymmetrical curve optical waveguide by individually adjusting the overlapped laser beams.
摘要:
An optical printed circuit board system having a tapered optical waveguide is provided. The optical printed circuit board system includes a substrate as a printed circuit board having an electrical circuit and on which an electrical circuit chip is mounted, a system board including an optical bench coupled to the substrate and on which a photoelectrical signal chip electrically connected to the electrical circuit chip through the electrical circuit, an optical device electrically connected to the photoelectrical signal chip, and a first optical waveguide aligned to the optical device for optical coupling and tapered to have a smaller aperture in an output node for outputting the optical signals smaller than that in an input node for inputting the optical signals are mounted, and a back plane including a groove into which the system board is inserted and a second optical waveguide optically coupled to the first optical waveguide and tapered to have a smaller aperture in the output node than in the input node. The input node of the first optical waveguide is optically coupled to the output node of the second optical waveguide or the output node of the first optical waveguide is optically coupled to the input node of the second optical waveguide.
摘要:
The present invention relates to a parallel optical interconnection module for transmitting an optical signal over an optical fiber and receiving an optical signal from the optical fiber. According to the present invention, a reflection surface is formed at the end of the optical waveguide forming a core so that the path of light can be exactly changed and is focused. A light source/photodetector is buried within a trench using the silicon optical bench and an optical waveguide is manually aligned on the surface of the silicon optical bench, so that alignment error between the light source/photodetector and the optical waveguide can be minimized. A ferrule into which the optical waveguide is inserted is fixed to an adaptor so that alignment error between the optical waveguide and the light source/photodetector is minimized. Therefore, the present invention can minimize the coupling loss in the process during which the optical signal is transmitted to increase the optical output. Further, the present invention allows easy optical interconnection by means of a manual alignment and can increase the productivity.
摘要:
An electro-optical circuit board (EOCB) in which an optical waveguide for transmitting an optical signal, and a driving unit/receiving unit and an optical source/optical detector for converting an electrical signal into the optical signal, and vice versa are integrated. The EOCB has a structure from which a lens is excluded for the purpose of an economical and efficient optical coupling between the optical waveguide and the optical source/optical detector. The optical source/optical detector are buried within a trench of a metal optical bench. The optical waveguide is then attached on the surface of the optical source/optical detector by means of an epoxy.
摘要:
Provided is a differential pair interconnection apparatus for providing a differential signal on a printed circuit board having signal paths for high-speed differential signals to an external circuit and providing a signal inputted from the external circuit to the printed circuit board without any signal distortion. According to the differential pair interconnection apparatus of the present invention, there can be provided two separate physical channels without impedance mismatching.
摘要:
The present invention provides a positive electrode material for a lithium secondary battery comprising a compound represented by the following Formula 1: LiMn1-xMxP1-yAsyO4 [Formula 1] wherein 0
摘要:
The present invention provides method for preparing a cross-linked ceramic-coated separator containing an ionic polymer, a ceramic-coated separator prepared by the method, and a lithium secondary battery using the same. According to preferred methods for preparing a cross-linked ceramic-coated separator, a coating material containing ceramic particles for improving thermal and mechanical characteristics, a functional inorganic compound for improving cycle characteristics and high rate characteristics of a battery, and an ionic polymer for bonding the ceramic particles and the functional inorganic compound on a porous membrane substrate is coated on the porous membrane substrate and subjected to chemical cross-linking.