Abstract:
PURPOSE: A vacuum chuck and a spin coater thereof are provided to improve the durability of a device and remarkably reduce a failure rate by filtering a polymer which passes through a via hole not to flow into a vacuum pump side. CONSTITUTION: A rotatable chuck main body(10) comprises an adsorption hole(11). The adsorption hole is vertically formed in the central part of the chuck main body towards a lower part from an upper part and is communicated with a vacuum pump. A closed curve shaped ring(60) is combined with the upper surface of the chuck main body in order to surround the adsorption hole. The ring is more projected than the upper surface of the chuck main body and settles a wafer(70) where a via hole(71) is formed. At least one bonding groove(20) combining the ring with the upper surface of the chuck main body is formed.
Abstract:
PURPOSE: An optical signal for a bidirectional optical communication and a manufacturing method thereof are provided to appropriate to the bidirectional optical communication with transferring an optical signal through both a core and a cladding. CONSTITUTION: An optical fiber(200a) forms a mirror(250) a one side of a vertical terminating face(L1). The mirror is formed on a cladding(230) area except for a core(210). A first optical signal(S1) is reflected on the cladding area except for the core with joining to the one side of a vertical terminating face. Accordingly the first optical signal is joined to the core area.
Abstract:
PURPOSE: A bidirectional optical transmission and reception apparatus is provided to prevent thermal, electric or optical cross talks by implementing an optical bench and multi-layered substrate. CONSTITUTION: An optical system(100) transmits and receives a beam through an optical line(2000), and an optical bench(200) includes a container and an operational transmission module(220). A reception unit receives an optical system, and the optical transmission and reception module outputs a horizontal beam, and a multi-structured board(300) includes an operational reception module(310) and a driving circuit unit(320). The optical reception module receives a vertical beam from the optical system, and a driving circuit unit for driving the optical transmission module is installed at a different layer.
Abstract:
본 발명은 광통신 모듈의 신뢰성 시험장치에 관한 것으로, 특히 광전 변환 모듈과 암전류 측정장비 사이의 인터페이스 장치에 관한 것이다. 상기 기술적 과제는 본 발명에 따라 상기 암전류 측정장비로부터 바이어스 전압을 인가받는 인터페이스부; 상기 인터페이스부를 통해 인가되는 바이어스 전압을 각각 연계되는 광전 변환 모듈로 일괄 제공하는 다수의 채널부들; 및 상기 다수의 채널부들 중 하나를 순차적으로 선택하여 선택된 채널부에 연계되는 광전 변환 모듈에 흐르는 암전류를 상기 인터페이스부를 통해 출력하는 제어부를 포함하는 것을 특징으로 하는 인터페이스 장치에 의해 달성되며, 이에 따라 측정 효율성을 향상시키고 광전 변환 모듈의 생산 단가의 상승 요인을 최소화할 수 있는 효과가 있다. 광통신, 포토 다이오드, 암전류, 신뢰성 시험
Abstract:
본 발명은 광대역 광원의 출력을 안정화시키기 위한 장치에 관한 것으로, 특히 광대역 광원에 사용되는 에르븀 첨가 광섬유(Erbium Doped Fiber:EDF)의 온도를 조절하는 장치에 관한 것으로, 상기 장치는 에르븀 첨가 광섬유(EDF)와; 주위 온도 변화에 따라 흡열과 발열 동작하는 열전 냉각기(thermoelectric cooler)와; 상기 열전 냉각기에서 발생되는 흡열 및 발열 에너지를 상기 광섬유로 전달하여 광섬유의 온도를 일정하게 유지시키기 위한 히트 파이프;를 포함한다. 상술한 구성을 가지는 본 발명은 히트 파이프와 열전 냉각기를 이용하여 에르븀 첨가 광섬유(EDF)의 온도를 주위 온도 변화에 맞춰 적응적으로 냉각 혹은 가열할 수 있기 때문에, 가열을 통해서만 광섬유(EDF)의 온도를 일정하게 유지시키는 종전 방법들에 비해 소비 전력면에서 효율적이라 할 수 있어 결과적으로 저전력 장치의 구현이 가능하며, 소형의 열전 냉각기 및 히트 파이프를 이용하여 에르븀 첨가 광섬유(EDF)의 온도를 항온으로 유지시키기 때문에 결과적으로 이득 변화를 억제하여 광대역 광원의 출력 특성을 안정화시킬 수 있게 되는 것이다. 광대역 광원, EDF, 온도조절.
Abstract:
An optical module having a magnetic align mark for passive alignment is provided to improve productivity by simplifying a bonding of an optical device and a substrate. An alignment mark of substrate(12) is formed in the single-side(10a) of the substrate(10) for the flip chip bonding. A device alignment mark(22) is formed in a counter surface(20a) of an optical device for a flip chip bonding which the single-side of substrate corresponds to each other. A magnet alignment mark made of material having one among the alignment mark of substrate and device alignment mark is formed, and the other one made of the metal alignment mark among the alignment mark of substrate and device alignment mark is formed. The material having magnetism is formed with the supermalloy of Ni80 Fe14 Mo5. The alignment mark of substrate and device alignment mark are formed by using a sputtering method, a plating method, and an electron-beam evaporation method.
Abstract:
An optical alignment method in an optical transmitting module, an apparatus thereof, and a method for manufacturing the optical transmitting module using the same are provided to shorten a time for optical alignment by enabling optical alignment work to be easily executed between an optical fiber and a light-emitting element in an optical transmitting module. A V-groove to fix an optical fiber to an SiOB(Silicon Optical Bench) is formed(S110). A reflective surface is formed as a high-reflectivity material is applied to one inclined section of the V-groove(S120). A bonding pad is formed to bond a light-emitting element on the SiOB(S130). Then the optical fiber is fixed to the V-groove(S140). Visible laser beams are projected in the opposite direction to the actual optical path of the optical fiber(S150). The light-emitting element is relocated on the SiOB so that the optical path of the laser beams can be matched with the light-emitting area of the light-emitting element(S160). Then the light-emitting element is fixed in a flip chip bonding method(S170).
Abstract:
An optical fiber having a diffraction grating, a method for fabricating a diffraction grating at a cutting plane, and an optical apparatus using the same fiber are provided to enhance reproducibility of the grating by using a photolithography, a femtosecond laser, and a UV ray. An optical fiber(100) includes a core(110) and a cladding(120). The core is formed to transfer an optical signal. The optical fiber is surrounded by the cladding. A diffraction grating(130) is formed on a sectional surface of the optical fiber in order to separate or select the optical signal according to a wavelength. The diffraction grating is a type of a Frensnel diffraction lens having a linear pattern or a circular pattern. The interval and the depth of the linear pattern or the circular pattern has a constant rate or is increased or decreased in a constant rate in order to be separated or selected according to the wavelength.
Abstract:
본 발명은 광섬유의 클래딩 식각을 이용한 파장선별적 광집속장치 및 이를 이용한 광모듈에 관한 것이다. 본 발명에 따른 광섬유를 이용한 파장선별적 광집속장치는, 광신호가 전달되는 코어; 및 상기 코어를 둘러싸며, 외주면에 일정한 비율로 변화하는 형태를 갖는 다수의 홈이 형성된 클래딩을 포함하고, 상기 코어로 도파되는 일정한 파장을 갖는 광신호는 상기 홈에 의하여 상기 클래딩 외부로 집속되는 것을 특징으로 한다. fiber, chirped-Bragg grating, cladding-etched grating, optical focusing, 광송수신
Abstract:
A method for bonding a flip chip and an optical module using the same are provided to obtain string cohesion between a solder and a stud bump by melting a solder layer. A metal layer is formed on a substrate(20) and a semiconductor chip(20'). A solder layer is formed on the metal layer. A stud bump(22) is formed on an upper surface of the solder layer. A coining process for the stud bump is performed. The substrate including the coined stud bump or the stud bump of the semiconductor chip comes in contact with the semiconductor chip on which the stud bump is not formed or the solder layer of the substrate. The substrate and the semiconductor chip are fixed by applying the heat and the pressure thereto.