Abstract: An active optical cable is disclosed. According to the present disclosure, there is provided an active optical cable, having no complicated structure by obviating the need for a separate monitoring photodetector as was used for a typical optical transceiver, increasing light output-current linearity to improve optical coupling efficiency, generating a library of transmission/reception-related electro-optical characteristics of both optical modules so as to enable light outputted from a light source included in an optical transmitter to maintain high linearity over a wide range of temperatures, thereby reducing power consumption, and being applicable to a multi-level PAM technique involving at least four (4) levels.

Abstract: An active optical cable (AOC) is disclosed. According to the present disclosure, an AOC, when connected to a network equipment, generates, changes or deletes and then transmits new information necessary for the a network equipment to recognize and operate the AOC itself, and thereby enabling a data center provided with the AOC and the network equipment to perform data communication smoothly without failure.

Abstract: An active optical cable is disclosed. According to the present disclosure, there is provided an active optical cable, having no complicated structure by obviating the need for a separate monitoring photodetector as was used for a typical optical transceiver, increasing light output-current linearity to improve optical coupling efficiency, generating a library of transmission/reception-related electro-optical characteristics of both optical modules so as to enable light outputted from a light source included in an optical transmitter to maintain high linearity over a wide range of temperatures, thereby reducing power consumption, and being applicable to a multi-level PAM technique involving at least four (4) levels.

Abstract: An active optical cable (AOC) is disclosed. According to the present disclosure, an AOC, when connected to a network equipment, generates, changes or deletes and then transmits new information necessary for the a network equipment to recognize and operate the AOC itself, and thereby enabling a data center provided with the AOC and the network equipment to perform data communication smoothly without failure.

Abstract: An active optical cable is disclosed. According to the present disclosure, there is provided an active optical cable, characterized by: having no complicated structure by obviating the need for a separate monitoring photodetector as was used for a typical optical transceiver, increasing light output-current linearity to improve optical coupling efficiency, generating a library of transmission/reception-related electro-optical characteristics of both optical modules so as to enable light outputted from a light source included in an optical transmitter to maintain high linearity over a wide range of temperatures, thereby reducing power consumption, and being applicable to a multi-level PAM technique involving at least four (4) levels.

Abstract: A light emitting device having an electrode structure in which resistance to electrostatic discharge (ESD) is increased, the static electricity is efficiently dispersed and a current concentration phenomenon is prevented, the light emitting device including: a substrate; a first conductivity type semiconductor layer, an active layer, a second conductivity type semiconductor layer opposite to the first conductivity type semiconductor layer that are sequentially formed on the substrate; a first conductivity type electrode pad formed on the first conductivity type semiconductor layer; a second conductivity type electrode pad formed on the second conductivity type semiconductor layer; a first auxiliary electrode formed on the second conductivity type semiconductor layer to extend in one direction and having one end connected to the second conductivity type electrode pad and the other end formed in an opposite direction to a direction toward the first conductivity type electrode pad; and a second auxiliary electro

Abstract: A gallium nitride based compound semiconductor device including a compliant substrate having a reduced stress and a method for manufacturing the same are disclosed. The compliant substrate included in the gallium nitride based compound semiconductor device is manufactured by heating a substrate and a group III metal including at least one of an aluminum, a gallium and an indium, and a chloride based compound generated by introducing a HCl gas to the melted group III metal reacts with a NH3 gas to form a nitride based thin film on the wafer.

Abstract: A compliant substrate having a reduced stress, a method for manufacturing the same having a reduced manufacturing time, a gallium nitride based compound semiconductor device including the compliant substrate and a method for manufacturing the same are disclosed. The compliant substrate is manufactured by heating a substrate and a group III metal including at least one of an aluminum, a gallium and an indium, and a chloride based compound generated by introducing a HCl gas to the melted group III metal reacts with a NH3 gas to form a nitride based thin film on the wafer.

Abstract: Present invention is related to optical transceiver module using optical fiber cable and the detail is related to optical transceiver module transforming bi-directional transmission by single fiber cable using two different wavelength lights. Optical module is formed by modularized light emitting device, light receiving device, filter and lens and their optical alignment is accomplished by connecting them. In order to make accurate alignment, transmitter module with light emitting device included and receiver module with light receiving device included are connected to lens module by guide hole and guide pin molded by machined precisely. Lens module includes lens shape part to make light focusing effectively.

Abstract: A light emitting element and a method for manufacturing the same are disclosed. In accordance with the element and the method, the dielectric thin film including the embossed pattern partially covering the sapphire substrate prevents damage of a sapphire substrate that occurs during a texturing of the sapphire substrate and a defect of an epitaxial thin film formed in a subsequent process.

Abstract: An optical transmitter/receiver unit having an optical connector with an optical device array block and a multi channel optical fiber block is presented. The optical device array block includes at least one optical device for converting an electric signal to an optical signal or for converting an optical signal to an electrical signal. The optical devices is mounted on a silicon optical bench having a series of grooves for inserting, attaching and aligning each optical device. The optical device array block can be optically coupled to a multi channel optical fiber block that includes at least one optical fiber for transmitting an optical signal, the optical fiber being mounted in V-shaped grooves on a silicon V block. The V-shaped grooves on the V-block and the mounting grooves on the silicon optical bench allow for accurate alignment of each optical fiber with corresponding optical devices.

Abstract: The present invention relates to a module for parallel transmission and reception of an optical signals, and particularly a miniaturized module with a fixed optical coupler and a detachable electric connector is disclosed. A miniaturized optical signal transmission module according to the present invention comprises an electrical connector for coupling electric signals to a circuit board; an array of optical devices coupled to metal leads, the array of optical devices converting between optical signals and the electric signals; an optical fiber array block fixedly and optically coupled to the array of optical devices for transmitting the optical signals, wherein the metal leads are detachably coupled to the electrical connector part. The optical module can be miniaturized so that the entire system can be miniaturized. Accordingly, many advantages according to the miniaturization of the entire system can be obtained.

Abstract: The present invention relates to a module for parallel transmission and reception of an optical signals, and particularly a miniaturized module with a fixed optical coupler and a detachable electric connector is disclosed. A miniaturized optical signal transmission module according to the present invention comprises an electrical connector for coupling electric signals to a circuit board; an array of optical devices coupled to metal leads, the array of optical devices converting between optical signals and the electric signals; an optical fiber array block fixedly and optically coupled to the array of optical devices for transmitting the optical signals, wherein the metal leads are detachably coupled to the electrical connector part. The optical module can be miniaturized so that the entire system can be miniaturized. Accordingly, many advantages according to the miniaturization of the entire system can be obtained.

Abstract: A minimum frequency generator of a transceiver system is presented. In a transmitter presented with K bits of parallel data, if a flip condition is determined and selected ones of the K bits are flipped, then the flip condition is signaled in a separately transmitted clock signal. The flip condition can be that all K bits are one or zero. Additionally, the clock signal can indicated whether bits are flipped or not by adjusting the duty cycle of the clock signal.

Abstract: An optical transmitter/receiver unit having an optical connector with an optical device array block and a multi channel optical fiber block is presented. The optical device array block includes at least one optical device for converting an electric signal to an optical signal or for converting an optical signal to an electrical signal. The optical devices is mounted on a silicon optical bench having a series of grooves for inserting, attaching and aligning each optical device. The optical device array block can be optically coupled to a multi channel optical fiber block that includes at least one optical fiber for transmitting an optical signal, the optical fiber being mounted in V-shaped grooves on a silicon V block. The V-shaped grooves on the V-block and the mounting grooves on the silicon optical bench allow for accurate alignment of each optical fiber with corresponding optical devices.

Abstract: An optical connector capable of precisely aligning optical fibers with optical devices in a passive fashion is presented. The connector includes a fiber block and a device module. The fiber block can receive optical fibers and where the cores of the optical fibers are positioned in V-grooves. The device module receives optical devices in inserts formed in the device module such that electrical connections can be accomplished between electrical leads formed in the device module and the optical devices. The fiber block and the device module include complementary alignment mechanisms so that a precise alignment of the optical fibers with the optical devices can be accomplished. In some embodiments, the complementary alignment mechanism can be alignment holes and corresponding pins formed in the fiber block and device module. In some embodiments, a cover latched on the device module includes springs which hold the fiber block firmly in place in the device module.

Abstract: A multi-channel optical connector that includes a multi channel optical fiber block including at least one optical fiber capable of being optically coupled to at least one optical device. The multi-channel optical fiber block is incorporated in a plastic molding that is complimentary in shape to that of an optical device array block, and thus can be plugged into the optical device array block. The close tolerances maintained in manufacturing of the connector results in accurate alignment of the fibers captured in the multi-channel optical fiber block with the optical devices in the optical device array block. The close tolerances can be achieved by using MEMS (Micro Electro Mechanical System) processing techniques to manufacture the V-grooves in a silicon V-block, which is part of the multi-channel optical fiber block. Alternatively, V-grooves can be produced in the multi-channel optical fiber block by plastic molding.

Abstract: A method of adaptively varying and locking a wavelength of high power infrared laser diode for use in a blue laser using second harmonic generation. The method including the steps of: forming a pattern for forming a periodic domain inverted area on a substrate of a non-linear medium; performing proton-exchange and quick heat-treatment for the substrate on which the pattern is formed to thereby form the periodic domain inverted area having predetermined period and width; forming a straight optical waveguide and a segmented optical waveguide, in the direction perpendicular to the periodic domain inverted area; and vacuum-evaporating an insulating buffer layer on the substrate where the periodic domain inverted area and the straight and segmented optical waveguides are formed and forming a metal electrode on the insulating buffer layer on the upper portion of the segmented optical waveguide to thereby execute polishing end facet and AR coating.