Abstract:
Provided is a multi-channel drop filter using a photonic crystal, wherein light having a desired wavelength among light of various wavelengths guided along a bus wavelength is filtered to the drop waveguide arranged perpendicular to the bus waveguide through a resonator arranged between the bus and drop waveguides, thereby being easily connected to the existing planar photonic crystal devices to enable fabrication by nanoimprint technology using an embossing process as well as implementing an optical filter having an ultra narrowband line width and a high integrated photonic integrated circuit.
Abstract:
본 발명은 광섬유와의 결합시 정렬 오차로 인해 발생되는 결합 손실을 감소시킬 수 있도록 적어도 2열의 실린더형 렌즈를 갖는 프리즘 반사면을 갖는 2D 반사경, 적어도 2층의 코어 어레이를 갖는 2D 광도파로를 구비하고, 광섬유와의 결합시 정렬 오차로 인해 발생되는 결합 손실을 감소시킬 수 있도록 적어도 2열의 2D 실리콘 광학벤치를 구비하며, 광결합용 2D 광도파로의 고정을 용이하게 하는 적어도 2층의 광섬유를 적재할 수 있는 2D 페룰을 구비한 병렬 광접속 모듈용 광연결장치 및 이를 이용한 병렬 광접속 모듈을 제공한다.
Abstract:
본 발명은 고속 차동신호용 신호경로를 갖는 회로기판(PCB)에서의 차동신호(Differential Signal)를 왜곡이 없이 외부로 제공하거나 외부로부터의 신호를 회로기판으로 제공하기 위한 차동 쌍 접속 장치에 관한 것이다. 회로기판(PCB)에서의 차동신호는 소정의 입출력 포트를 통해 외부로 제공된다. 종래에는 입출력 포트가 단일모드 신호선(Single-ended Line)에 연결되면 차동신호선의 소정 영역에서 임피던스 부 정합이 일어나 차동신호의 장점을 상실하게 된다. 본 발명의 차동 쌍 접속 장치는 독립된 두 개의 물리적 채널을 제공하며 임피던스 부 정합이 발생되지 않는다.
Abstract:
PURPOSE: A polymer photonic crystal slab waveguide structure with profitable coupling to optical fibers and a manufacturing method thereof are provided to reduce manufacturing cost by forming the polymer photonic crystal slab waveguide using nano-embossing technique. CONSTITUTION: A polymer photonic crystal slab(51) forms a two dimensional photonic stripe lattice arrangement by using plural air holes(54). A cladding layer(52) is formed on a lower portion of the photonic crystal slab to provide an air layer to the air holes. A substrate(40) includes a groove(41) to be coupled with an optical fiber(60) corresponding to the air layer. The substrate is formed under the cladding layer. The air holes are formed by using a nano-embossing technique.
Abstract:
본 발명은 광섬유를 통해 광신호를 송신하거나 광섬유로부터 광신호를 수신하기 위한 병렬 광접속 모듈에 관하여 개시한다. 본 발명은, 광도파로를 이루는 코어의 종단에 반사면을 형성하여 광의 정확한 경로 변경 및 집속이 이루어지도록 하고, 실리콘 광학벤치를 이용하여 트렌치 속에 광원/광검출기를 매립하여 부착하고 실리콘 광학벤치 표면에는 광도파로를 수동 마크 정렬 후 부착하여 광원부/광검출부와 광도파로 간의 정렬오차가 최소화되도록 하고, 광도파로가 삽입된 페룰이 어뎁터에 고정되도록 하여 광도파로와 광원부/광검출부 간의 정렬오차가 최소화되도록 하여 광 신호가 전달되는 과정에서 결합 손실이 최소화되어 광 출력이 증대되며, 수동정렬에 의한 광결합이 용이하여 생산성이 뛰어나 저렴한 비용으로 광 연결을 이룰 수 있는 병렬 광접속 모듈을 제공한다.
Abstract:
PURPOSE: A method for manufacturing a metal mold having a curved structure and a method for manufacturing an optical waveguide device by using the metal mold having the curved structure are provided to improve the efficiency of optical connection by using the metal mold having the curved structure and a hot embossing. CONSTITUTION: A photoresist(103) is formed on a substrate(101). An X-ray mask(109) having an optical absorption pattern(105) is provided on an upper portion of the substrate(101) provided with the photoresist(103). Amount of X-ray dose is controlled by irradiating an X-ray onto the photoresist(103). A photoresist pattern having one curved surface is formed through the development of the photoresist(103) having the controlled amount of X-ray dose. A coating structure is formed by coating a metal film on the photoresist pattern having the curved surface. The photoresist pattern within the coating structure is eliminated.
Abstract:
PURPOSE: A method for manufacturing a metal mold having a curved structure and a method for manufacturing an optical waveguide device by using the metal mold having the curved structure are provided to improve the efficiency of optical connection by using the metal mold having the curved structure and a hot embossing. CONSTITUTION: A photoresist(103) is formed on a substrate(101). An X-ray mask(109) having an optical absorption pattern(105) is provided on an upper portion of the substrate(101) provided with the photoresist(103). Amount of X-ray dose is controlled by irradiating an X-ray onto the photoresist(103). A photoresist pattern having one curved surface is formed through the development of the photoresist(103) having the controlled amount of X-ray dose. A coating structure is formed by coating a metal film on the photoresist pattern having the curved surface. The photoresist pattern within the coating structure is eliminated.
Abstract:
PURPOSE: An optical transmitting/receiving module is provided to minimize an arrange error between an optical waveguide and a light source/optical detector by fixing a ferrule in which an optical waveguide is inserted to an adapter. CONSTITUTION: An electrode pad(11) is formed on a substrate(10). A driver/receiver(20) and a light source/detector(30) are formed on the substrate(10) in an array form. The driver/receiver(20) is connected to the electrode pad(11) by a bonding wire(22). The light source/detector(20) is connected to the driver/receiver(20) by the boding wire. An adapter(60) is coupled with a connector(100). A ferrule(50) is coupled with the adapter(60) and fixes an optical waveguide(40). The optical waveguide(40) includes a lower clad layer, an upper clad layer, and a core. The core is formed between the lower clad layer and the upper clad layer. The core has a taper portion. A reflecting surface(44) is formed at an end of the core and has a curved surface having a predetermined reflectance ratio.