Abstract:
An optical crosstalk enhanced PLC type digital optical switch is provided to be driven by a low power and to secure an optical crosstalk more than 40dB. An optical crosstalk enhanced PLC type digital optical switch includes a symmetric type Y-branch switch and a radial type attenuator. The symmetric type Y-branch switch(3) branches an incident light into one of a Y-branch optical waveguide. The radial type attenuator(5A,5B) attenuates a light branched through the symmetric type Y-branch switch, and outputs the light to an output port. The radial type attenuator includes a straight light waveguide and a thermal optical heater. The straight light waveguide(2) attenuates the branched light when the thermal optical heater is operated. The thermal optical heater(1) is arranged in a central top part of the straight light waveguide.
Abstract:
An optical connection method and an optical connection structure between an optical transmitter and an optical receiver are provided to increase the capacity of transmission by performing an interfacing operation between chips and accelerating a transmitting operation of a high-speed signal. A light source element(104), a light detection element(105), a light transmission unit(102) connected electrically to the light source element, and a light detection unit connected electrically to the light detection unit are formed on a substrate(101). A flexible light transmission connection medium(106) is prepared to connect the light source element with the light detection element electrically. An end part of the flexible light transmission connection medium is cut. A surface of the cut part of the flexible light transmission connection medium is processed. One end of the surface-processed flexible light transmission connection medium is directly connected to the light source element. The other end of the surface-processed flexible light transmission connection medium is directly connected to the light detection element.
Abstract:
본 발명은 광송수신 모듈을 구성하기 위해 능동광전소자와 광도파로간 광연결용 광도파로 제작에 관한 것으로 90° 광경로 변견구조를 갖는 것으로 광도파로와 45° 반사경만이 일체형으로 구성되는 광도파로 마스터의 제조공정에 관한 것이다. 이러한 광도파로 마스터를 이용하여 제조되는 반사경면을 갖는 광도파로는 능동광전자소자와 도파로 결합을 쉽게하여, 기존의 대량생산에 어려움을 완전 해결하는 방법이다. 다양한 광소자간, 광회로간의 접속을 가능하게 하고, 향후 광 PCB, SOP(System On a Packaging) 기술의 원천 기술이 될 것이다. 광도파로 마스터, 능동광전소자, 45° 경사면을 갖는 광도파로, 일체형 광도파로
Abstract:
본 발명은 광신호를 전송하는 광도파로(Optical Waveguide), 전기/광 신호 상호 간의 변환을 담당하는 구동부/수신부 및 광원부/광검출부가 다층 회로기판(PCB)에 일체형으로 구비된 광백플레인(EOCB)에 관한 것이다. 광도파로와 광원/광검출기 간의 경제적으며 효과적인 광학적 결합을 위해 렌즈(Lens)를 배제한 구조로서, 금속 광학벤치(Optical Bench)의 트렌치(Trench) 내에 광원/광검출기를 매립하고, 표면에 광도파로를 수동 마크 정렬 후 에폭시로 부착함으로써 광원부/광검출부와 광도파로 간의 정렬오차가 최소화되도록 한다. 본 발명은 하나의 일체화된 패키징 구조로서, 광도파로, 광원부/광검출부, 방열기(Heat Spreader)를 포함하는 금속 광학벤치와 구동부/수신부가 전기회로로 설계된 회로기판(PCB)을 일체형으로 패키징한다. 이와 같이 패키징된 광송수신 모듈을 별도로 제작된 회로기판(PCB)의 트렌치 내에 삽입/부착한 후 비아(Via)를 이용하여 전기적으로 연결한다. 이러한 구조는 기존의 광학적 결합을 위한 렌즈 사용으로 인한 문제, 광도파로의 정렬 과정에서 발생되는 문제, 회로기판(PCB) 제작 과정과 광도파로 결합 과정에서 발생되는 문제 등을 해결하여 경제성 및 양산성을 향상시킨다.
Abstract:
PURPOSE: An apparatus and a method for fabricating an optical access device are provided to prevent a variation of a gap between optical fiber holes by inserting plural fine pins into plural cylindrical grooves of a slide core to fix the fine pins. CONSTITUTION: An apparatus for fabricating an optical access device includes a moving member(408), a slide core portion(410), a slide core(104), a core mold(108), a recovery member(416), and an upper mold(402). The moving member(408) is installed at one side of an upper surface of a lower mold(404). The slide core portion(410) is installed on an upper surface of the moving member(408). The slide core portion(410) includes an incline plane to move the slide core(104). The slide core(104) is located on an upper surface of the slide core portion(410). The slide core(104) includes a plurality of fine pins(102). The core mold(108) includes a plurality of cylindrical grooves and an opening portion. The fine pins(102) are inserted into the cylindrical grooves of the core mold(108). The recovery member(416) provides the restoring force when the slide core portion(410) is moved. The upper mold(402) is used for covering the core mold(108). The upper mold(402) includes an incline plane to move the slide core(104).
Abstract:
다중분포귀환레이저소자를제공한다. 이소자는제1 분포귀환영역, 변조영역, 제2 분포귀환영역및 증폭영역을포함하는기판을포함한다. 활성층이제1 분포귀환, 변조, 제2 분포귀환및 증폭영역들의기판상에배치된다. 제1 회절격자가제1 분포귀환영역내에배치되어, 제1 분포귀환영역의활성층과커플된다. 제2 회절격자가제2 분포귀환영역내에배치되어, 제2 분포귀환영역의활성층과커플된다. 또한, 이소자는제1 회절격자에열을공급하는제1 마이크로히터및 제2 회절격자에열을공급하는제2 마이크로히터를포함한다.
Abstract:
The present invention relates to the core technique of a wide area array type photonic crystal photomixer which generates a continuous frequency change type and a pulse type broadband terahertz wave. The present invention improves optical absorption by using the transmission characteristic of a 2D photonic crystal structure, thereby increasing the generation efficiency of a terahertz wave. Moreover, the present invention secures a wide area array type photonic crystal photomixer by properly and spatially arranging a photonic crystal structure with various cycles and by applying an interdigit structure. Therefore, the present invention reduces the high optical density of the optical absorption to solve the difficulty of a thermal property and optical arrangement and greatly improves low photoelectric transformation efficiency. In addition, the radiation pattern of a terahertz wave can be electrically controlled by the present technique.