Electronics and Telecommunications Research Institute

Dae Seon Kim

Jong Jin Lee

Sang Jin Kwon

Soo Yong Jung

Eun Kyu Kang

Won Bae Kwon

Hae Chung Kang

Kwon Seob Lim

Gye Sul Cho

Dae Woong Moon

Hyun Seo Kang

Jeong Eun Kim

Kwon-Seob Lim

Eun Kyoung Jeon

Sun-Goo Lee

A multi-channel optical sub-assembly includes a printed circuit board with a signal processor mounted thereon, a package window mounted on the printed circuit board, the package window including a transparent material, a package mounted on the package window, and an optical device accommodated into an inner space of the package and configured to convert an electrical signal, input from the signal processor, into an optical signal, wherein the electrical signal sequentially passes through a window through electrode buried in the package window and a package through electrode buried in the package and is input to the optical device.

Multi-channel optical sub-assembly

An optical receiver sub-assembly is provided, which includes a substrate, an optical waveguide device mounted on the substrate to transfer ray incident from a ray source, and a photodetector mounted on the substrate and disposed under a vertical cross-sectional surface of the optical waveguide device, wherein the ray is sequentially reflected and refracted by an upper slope surface and a lower slope surface provided in the vertical cross-sectional surface and is vertically incident on an active area of the photodetector.

Receiver optical sub-assembly, multi-channel receiver optical sub-assembly, and operating method thereof

A highly integrated multi-channel optical module is provided. The optical module includes an optical source device mounted on a substrate by an optical source mount unit, a waveguide mounted on the substrate by a waveguide mount unit, a lens mount unit disposed between the optical source device and the waveguide and mounted on the substrate, and a lens unit fixed to the lens mount unit by an adhesive cured by ultraviolet (UV) parallel light, wherein a light path of the UV parallel light is formed in the lens mount unit by a reflector attached on a side surface of the lens mount unit, and the UV parallel light moves along the light path and cures the adhesive coated on an upper portion of the lens mount unit facing a lower end portion of the lens unit.

Highly-integrated multi-channel optical module having lens mounting structure for minimizing optical alignment error and lens assembly process thereof

Provided is a cooled optical transmission module device including a silicon wafer having a plurality of platform mounting grooves, each of which serves as a space for mounting in which an optical transmission platform therein, a thermoelectric cooler bonded to the platform mounting groove to transfer heat to outside, the optical transmission platform provided on the thermoelectric cooler and configured to output an optical signal by generating and reflecting the optical signal, a dielectric sub-mount bonded to the platform mounting groove of the silicon wafer and electrically connected to the mounted optical transmission platform, and a cover configured to cover the platform mounting groove of the silicon wafer and seal the platform mounting groove while providing an electric path.

Cooled optical transmission module device and method of manufacturing the same

An ultra-small multi-channel optical module according to one embodiment of the present invention includes a base board, a glass substrate, a heat sink, optical elements, parallel light lenses, a first rectangular reflector, a glass cover, a second rectangular reflector, horizontal reflectors, and a light collecting lens.

Ultra-small multi-channel optical module with optical wavelength distribution

A transmitting apparatus includes an optical modulator configured to modulate input light from a light source into a light signal including a carrier signal and a sideband signal based on a radio frequency (RF) signal, having polarization characteristics crossing each other, an optical power splitter configured to split the light signal into a plurality of light signals, a plurality of light phase shifters configured to respectively shift phases of the plurality of light signals, a plurality of polarization controllers configured to perform control so that a carrier signal and a sideband signal included in each of the phase-shifted plurality of light signals have the same polarization characteristic, and a plurality of photodetectors configured to convert the plurality of light signals, having polarization characteristics controlled by the plurality of polarization controllers, into a plurality of electrical signals and to transfer the electrical signals to a plurality of antenna elements.

Apparatus and method for beamforming communication

There is provided an optical module. The optical module includes a light source, a wave guide to which beam output from the light source is input, a lens system configured to optically combining the light source and the wave guide, a first lens mount positioned between the light source and the lens system in an optical axis of the light source, a first adhesive configured to fix the lens system to the first lens mount, a second lens mount positioned between the wave guide and the lens system in the optical axis of the light source, and a second adhesive configured to fix the lens system to the second lens mount. Therefore, it is possible to precisely align light, to manufacture the optical module with small expenses, and to simplify processes and equipment.

Growing community of inventors

Gwangju, South Korea

Dae Seon Kim