摘要:
Provided are light detection devices and methods of manufacturing the same. The light detection device includes a first conductive pattern on a surface of a substrate, an insulating pattern on the substrate and having an opening exposing at least a portion of the first conductive pattern, a light absorbing layer filling the opening of the insulating pattern and having a top surface disposed at a level substantially higher than a top surface of the insulating pattern, a second conductive pattern on the light absorbing layer, and connecting terminals electrically connected to the first and second conductive patterns, respectively.
摘要:
Methods of forming photo detectors are provided. The method includes providing a semiconductor layer on a substrate, forming a trench in the semiconductor layer, forming a first single crystalline layer and a second single crystalline layer using a selective single crystalline growth process in the trench, and patterning the first and second single crystalline layers and the semiconductor layer to form a first single crystalline pattern, a second single crystalline pattern and an optical waveguide.
摘要:
The inventive concept provides semiconductor laser devices and methods of fabricating the same. According to the method, a silicon-crystalline germanium layer for emitting a laser may be formed in a selected region by a selective epitaxial growth (SEG) method. Thus, surface roughness of both ends of a Fabry Perot cavity formed of the silicon-crystalline germanium layer may be reduced or minimized, and a cutting process and a polishing process may be omitted in the method of fabricating the semiconductor laser device.
摘要:
Provided is a manufacturing method of a photo detector. The method includes: forming a first single crystal semiconductor layer and an optical waveguide protruding from the first single crystal semiconductor layer; forming an insulation layer on the first single crystal semiconductor layer to cover the optical waveguide; forming an opening by etching the insulation layer to expose the top surface of the optical waveguide; forming a second single crystal semiconductor layer from the top surface of the exposed optical waveguide, in the opening; and selectively forming a poly semiconductor layer from the top surface of the second single crystal semiconductor layer, the poly semiconductor layer being doped with dopants.
摘要:
Provided is an optical network structure. To configure an optical network structure between hundreds or more of cores in a CPU, intersection between waveguides does not occur, and thus, the optical network structure enables two-way communication between all the cores without an optical switch disposed in an intersection point. The present invention enables a single chip optical network using a silicon photonics optical element, and a CPU chip configured with hundreds or thousands of cores can be developed.
摘要:
Provided are methods of forming an optical coupler. The method includes forming a first waveguide and an in-plane tapered layer on a silicon layer, forming a mask with first and second openings. The first opening is formed between the in-plane tapered layer and the second opening, and the second opening extends from the first opening with a gradually narrowing width. Thereafter, a planar waveguide and a three-dimensional tapered layer are simultaneously formed in the first and second openings, respectively. The planar waveguide has a substantially uniform thickness, and the three-dimensional tapered layer has a thickness gradually increasing with a decrease of the width thereof.
摘要:
Provided are a method of fabricating a porous thin film structure, by forming a thin film from at least two elements, followed by selectively removing the certain element using a dry etching process, and a porous thin film structure fabricated by the same. Because all processes of the method of fabricating a porous thin film structure are dry processes, process control is simply accomplished, environmental impact is low, and mass production is possible, in contrast to when using a typical wet process such as electrodeposition or dealloying. Also, since a level of porosity is easily controlled and maintained uniform, a mesoporous thin film structure showing a reproducible level of sensitivity when used as a sensor can be fabricated.
摘要:
An apparatus and method for providing an emergency alert service in a portable terminal and for generating an alarm for the emergency alert service are provided. The method includes detecting, by a controller, an SOS execution signal while the portable terminal is being operated in a certain mode, identifying, by the controller, a current operating mode of the portable terminal in response to the SOS execution signal, outputting a control signal according to the identified operating mode to a source audio signal processor, and outputting, by the source audio signal processor, a source audio signal according to an input port receiving the control signal.
摘要:
Provided is a method of fabricating a nano particle complex catalyst including generating a plasma ion of a solid element and performing plasma ion implantation to carry a catalyst component of the solid element in a porous carrier. In the method, a pulse direct current voltage is applied to the deposition source to generate the plasma ion of the solid element, and a synchronized voltage is applied to the porous carrier, thereby instantly applying a pulse high voltage to the solid element. The ionized solid element is accelerated toward the porous carrier by the pulse high voltage instantly applied to the solid element, thereby performing the ion implantation.
摘要:
The present invention provides an optical flexible printed circuit board comprising: a base layer; an optical waveguide pattern disposed on a partial region of the base layer; an insulating layer which is disposed on the base layer with the optical waveguide pattern and has a surface profile bent by the optical waveguide pattern; and circuit wires disposed on one surface of the base layer.