Abstract: There is provided a photoelectric conversion module in which an optical device and an optical waveguide are arrayed in a horizontal direction, thereby improving the optical coupling efficiency and therefore, reducing light loss.

Abstract: Provided are a photoelectric conversion module for direct optical interconnection and a method of manufacturing the same, wherein an optical element array is bonded to a side surface of an IC board having a semiconductor chip mounted thereon and an optical waveguide array is bonded to one end of the optical element array having the other end bonded to the IC board to be optically connected to the optical element array, thereby improving the efficiency of optical coupling between optical elements and optical waveguides, and wherein since the optical coupling between the optical elements and the optical waveguides is realized on the same plane between the optical waveguides having the same array as the optical elements, multi-channel optical coupling can be facilitated to enable easy implementation of an optical design.

Abstract: There is provided a photoelectric conversion module in which an optical device and an optical waveguide are arrayed in a horizontal direction, thereby improving the optical coupling efficiency and therefore, reducing light loss.

Abstract: Provided are a photoelectric conversion module for direct optical interconnection and a method of manufacturing the same, wherein an optical element array is bonded to a side surface of an IC board having a semiconductor chip mounted thereon and an optical waveguide array is bonded to one end of the optical element array having the other end bonded to the IC board to be optically connected to the optical element array, thereby improving the efficiency of optical coupling between optical elements and optical waveguides, and wherein since the optical coupling between the optical elements and the optical waveguides is realized on the same plane between the optical waveguides having the same array as the optical elements, multi-channel optical coupling can be facilitated to enable easy implementation of an optical design.

Abstract: The present invention relates to a method of packaging optical parts for optical communication. According to the method of the present invention, there are advantages in that a packaging process for optical parts is automated to improve productivity and to obtain price competitiveness and uniformity of quality, and a high frequency heater for locally transferring heat to only a solder preform is used to minimize thermal deformation of areas except a soldering area, thereby achieving highly reliable packaging of the optical parts.

Abstract: The present invention relates to a method of packaging optical parts for optical communication. According to the method of the present invention, there are advantages in that a packaging process for optical parts is automated to improve productivity and to obtain price competitiveness and uniformity of quality, and a high frequency heater for locally transferring heat to only a solder preform is used to minimize thermal deformation of areas except a soldering area, thereby achieving highly reliable packaging of the optical parts.

Abstract: The present invention provides an optical signal add/drop apparatus comprising: an optical signal multiplexing/demultiplexing portion comprising a plurality of 2×2 channel unit devices which are arranged in a straight line and having first and second dual-core ferrules having two optical fibers disposed to be symmetrical to each other at an identical distance from an optical axis for transmitting optical signals, a wavelength division filter disposed between first and second lenses for selectively transmitting or reflecting only the optical signals having specific wavelengths, first and second grin lenses for collimating or focusing the optical signal transmitted or reflected from said wavelength division filter and then transmitting the signal to the first and second dual-core optical fibers; and a switch module having unit 2×2 switches connected to two optical fibers of the second dual-core ferrule of each of the unit devices of said optical signal multiplexing/demultiplexing portion; wherein th

Abstract: Disclosed is a tap coupler which comprises a ferrule comprising first and second optical fibers symmetrically positioned with respect to an optical axis for transmitting optical signals; and a graded index (GRIN) lens converting a part of the optical signals provided by one of the optical fibers of the ferrule into parallel beams and outputting the same, and reflecting the remaining part of the optical signals and outputting the same to another optical fiber of the ferrule, and having an uncoated beam outputting surface. The tap coupler can easily extract a part of the transmitted optical signals with low production cost and a smaller size.

Abstract: Disclosed is a tap coupler which comprises a ferrule comprising first and second optical fibers symmetrically positioned with respect to an optical axis and transmitting optical signals; and a graded index (GRIN) lens converting a part of the optical signals provided by one of the optical fibers of the ferrule into parallel beams and outputting the same, and reflecting the remaining part of the optical signals and outputting the same to another optical fiber of the ferrule, and having an uncoated beam outputting surface of the GRIN lens. The tap coupler can easily extract a part of the transmitted optical signals with low production cost and a smaller size.

Abstract: The present invention provides an optical signal add/drop apparatus comprising: an optical signal multiplexing/demultiplexing portion comprising a plurality of 2×2 channel unit devices which are arranged in a straight line and having first and second dualcore ferrules having two optical fibers disposed to be symmetrical to each other at an identical distance from an optical axis for transmitting optical signals, a wavelength division filter disposed between first and second lenses for selectively transmitting or reflecting only the optical signals having specific wavelengths, first and second grin lenses for collimating or focusing the optical signal transmitted or reflected from said wavelength division filter and then transmitting the signal to the first and second dual-core optical fibers; and a switch module having unit 2×2 switches connected to two optical fibers of the second dual-core ferrule of each of the unit devices of said optical signal multiplexing/demultiplexing portion; wherein the

Abstract: There is provided an optical attenuator for reducing back-reflection by forming the sections of optical fibers of the optical attenuator into non-spherical lenses. For this purpose, in an optical attenuator for attenuating a predetermined optical signal, the sections of first and second optical fibers spaced by a predetermined distance to face each other are formed into non-spherical lenses. Thus, optical attenuation precision is improved and impacts of back-reflection is avoided.