摘要:
Provided is a semiconductor optical modulator device in which a resistor for impedance matching is integrated in a device in order to improve performance and to reduce cost during the fabrication of an ultra high speed optical modulator module. A doped layer in an epitaxial layer of the optical modulator device is used as a resistor for impedance matching. According to this method, it is possible to more easily realize an optical device compared with optical device fabrication processes in which additional resistors are used in the outside and the inside of the device for impedance matching.
摘要:
Provided are an enhanced structure of a coplanar waveguide that is a kind of transmission line used for optical communication for radio frequency (RF), and an optical communication module employing the same. While having a basic structure including a conductive strip and ground strips at both sides of the conductive strip on a dielectric substrate, the coplanar waveguide has the structure in which metal patterns of a portion of the conductive strip located around points where an RF propagation direction is changed and of a portion of an inside ground strip are removed to make electrical lengths of an outside ground strip and the inside ground strip similar each other. Using the coplanar waveguide, it is possible to fabricate an optical module that has an optimized RF characteristic and also can freely change an RF propagation direction of several tens GHz, without an additional process.
摘要:
A cooking apparatus to effectively agitate and evenly distribute high-temperature air into a cooking chamber by use of a single driving fan and a plurality of driven fans. The cooking apparatus includes the cooking chamber, the driving fan arranged at a rear wall of the cooking chamber, a convection heater to surround the driving fan, the plurality of driven fans arranged on a circumference of the driving fan, and a fan cover having a plurality of suction holes and discharge holes. The driving fan is connected with a drive motor to rotate in accordance with an operation of the drive motor. The driven fans rotate by use of air streams generated when the driving fan rotates. The high-temperature air is evenly agitated in accordance with the rotation of the driven fans to be distributed into the cooking chamber via the discharge holes in all directions.
摘要:
The present invention relates to a shelf for a refrigerator, and a refrigerator having the same. A shelf for a refrigerator according to the present invention comprises a support plate 22 having an upper surface on which an article is to be put; a frame 24 formed to correspond to the shape of a periphery of the support plate 22 and having, at an inner side thereof, a coupling portion 30 to which the support plate 22 is coupled to the coupling portion 30 by means of a bonding member 32; and a fixing device for fixing the support plate 22 to the coupling portion 30. At this time, the fixing device may comprise a fixing member 34 having a supporting protrusion 34b penetrating though a sidewall of the frame 24 to support the support plate 22 from below. Alternatively, the fixing device may comprise an elastically deformable resilient hook and a fixing protrusion formed to face the resilient hook all of which are provided on the frame. With the shelf for a refrigerator according to the present invention constructed as above, there are advantages in that the shelf has a secure coupling structure, the process of coupling the components of the shelf is simplified, the shelf has improved durability, and production costs are reduced.
摘要:
Provided is a double waveguide electroabsorption modulator, in which two spot size converters are integrated between first and second optical waveguides, thereby reducing an insertion loss between an optical fiber and an optical modulator while favorably operating even in high input optical power. Therefore, the electroabsorption modulator can stably operate in higher input optical power while reducing an optical coupling loss and an optical confinement factor (OCF).
摘要:
A method for fabricating a multi-layer film for vacuum packaging, comprises the steps of: supplying a gas-impermeable film to a cooling roll; supplying a sealing film to a nip roll having an embossed pattern; extruding a molten polymer material toward a gap between the gas-impermeable film and the sealing film, thereby forming a multi-layer preform having a structure of gas-impermeable film-polymer layer-sealing film; and squeezing the multi-layer preform by passing the multi-layer preform through a nip between the nip roll and the cooling roll, so that the gas-impermeable film, the sealing film, and the polymer material of the multi-layer preform are laminated on each other simultaneously while the sealing film and the polymer material are embossed by the nip roll and the cooling roll.
摘要:
A method and apparatus for providing a phonebook using an image in a portable terminal are provided. The method includes recording contact information in metadata of an image, and performing a linkage function using the image having the contact information recorded therein.
摘要:
A method and apparatus for controlling standby power of a washing machine, which is located in a remote place and can be remotely controlled by a user, is provided. The apparatus includes a communication unit, a power supply, and a controller. The communication unit performs data communication with a monitoring device that performs remote control and monitoring of the washing machine. The power supply supplies needed power to the washing machine. When a wash cycle is terminated or a power-off command is input during data communication with the monitoring device through the communication unit, the controller determines whether to supply main power to the washing machine according to a user setting and controls the power supply according to the determination. The user can set whether to supply main power when a wash cycle has been terminated or a power-off command has been input, achieving easy and efficient standby power control.
摘要:
Disclosed is an in vivo selection method for identifying zinc finger domains that recognize any given target site. Also disclosed are the amino acid sequences of zinc finger domains that recognize particular sites.
摘要:
Example embodiments of the present invention relate to a method of manufacturing an optical device having a transparent cover and a method of manufacturing an optical device module using the optical device. According to an example method of manufacturing the optical device, a semiconductor substrate having a plurality of dies including an effective pixel and a plurality of bonding pads arranged around the effective pixel is prepared. A protective layer may be formed on the semiconductor substrate to selectively cover the effective pixel. An adhesive pattern may be formed to enclose an edge of the effective pixel, and a transparent cover may be attached to correspond to the effective pixel using the adhesive pattern.