Abstract:
A device and a method for inputted characters with a wearable haptic sensor, and a wearable character recognition device are provided to enable a user to put on the device like clothes and input the characters with fingers by quickly and easily inputting the characters to a digital device. The wearable haptic sensor is touched with the character of a character pad. A touch detector(13) detects that the specific character of the character pad is touched to the wearable haptic sensor. An image processor(14) recognizes an image of the detected character and processes the recognized image. A character recognizer(15) reads the processed character as a form to be inputted to the digital device. The image processor includes an image signal converter(141) converting an electric signal extracted from the touch detector into an image signal and a character shape determiner(142) determining a shape of the character from the image signal.
Abstract:
본 발명은 대물렌즈의 광축 방향으로 액츄에이터를 움직이게 하는 포커싱 코일을 구비하는 포커싱 자기회로부; 디스크의 레디얼 방향으로 액츄에이터를 움직이게 하는 트래킹 코일을 구비하는 트래킹 자기회로부; 상기 포커싱 자기회로부, 트래킹 자기회로부 및 대물렌즈 홀더를 구비하는 보빈; 및 상기 보빈의 일부를 베이스에 지지하기 위한 적어도 하나의 서스펜션을 구비하되, 상기 포커싱 자기회로부와 상기 트래킹 자기회로부는 상기 보빈을 중심으로 좌우로 독립하여 분리된 구조인 광픽업 액츄에이터를 제공한다. 본 발명의 광픽업 액츄에이터는 휴대용 초소형 광 디스크 드라이브의 핵심 부품으로 응용될 수 있다. 휴대용 전자기기에 광 디스크 드라이브가 사용되기 위해서는 적절한 기록 용량을 가지면서 크기가 작고 두께가 얇아야 한다. 광픽업 액츄에이터, 광 디스크, 대물렌즈, 트래킹, 포커싱
Abstract:
본 발명은 단일 파장의 광원으로 펌핑하여 희토류 원소에 의한 광신호 증폭과 비선형 라만효과에 의한 광신호 증폭을 동시에 발생시키면서 광 증폭대역이 서로 중첩되지 않도록 하는 광섬유 및 이를 이용한 하이브리드 광섬유 증폭기에 관한 것으로, 클래드와, 상기 클래드의 굴절율 보다 큰 굴절율을 갖도록 구성되는 코어로서 소정의 파장을 갖는 펌핑광을 입력 받아 희토류 원소에 의해 제1 밴드로 광증폭을 하도록 첨가되는 제 1 원소와 비선형 라만 광증폭에 의해 제2 밴드로 광증폭을 하도록 첨가되는 제 2 원소를 포함하는 코어를 포함하여 구성된 증폭용 광섬유를 제공한다. 광증폭기, 희토류, 라만, 어븀 게르마늄 동시 첨가 광섬유
Abstract:
본 발명은 Ho 3+ : 5 I 5 → 5 I 7 천이로부터 방출되는 1.6 ㎛ 형광을 광증폭기로 이용하면서 펌프효율을 향상시킬 수 있는 여기광원의 주 파장대역과 5 I 5 준위와 5 I 7 준위간 밀도반전을 이루어 증폭기의 이득특성을 향상시킬 수 있는 보조펌프 파장대역을 개진한다. 홀뮴이나 홀뮴과 터븀, 홀뮴과 유로퓸, 홀뮴과 네오디뮴 또는 홀뮴과 디스프로슘 등이 첨가된 광재료를 이용하는 광증폭기를 11,200~11,500 cm -1 범위의 빛을 방출하는 광원 또는 6,000~6,500 cm -1 범위의 빛을 방출하는 광원을 이용하여 펌핑할 수 있다.
Abstract:
A high-speed wavelength channel selector has properties of relatively easy manufacturing and easy extension to multi-channel integration, and a high-speed space and wavelength multiplexed channel selector uses the high-speed wavelength channel selector. The high-speed wavelength channel selector is integrated with electro-optic waveguide switches of non-crystalline materials, such as electro-optic polymers or glasses, in the middle of a pair of wavelength multiplexer and demultiplexer and the high-speed space and wavelength multiplexed channel selector has the photonic integrated circuit-type composition of a space multiplexed channel selector containing M electro-optic waveguide switches and an Mx1 channel combiner, the high-speed wavelength channel selector, optical amplifier and a high-speed wavelength converter.
Abstract:
PURPOSE: A method of fabricating optical fiber is provided to overcome the difficulties of adjusting a radius ratio of a core to a cladding and to prevent an impurity of a core/cladding interface from being input. CONSTITUTION: A core glass bar is made by mixing glass raw through a melting-quenching manner and by shaping and slowly cooling the mixed material. The core glass bar is heated over a glass transient temperature and is afflicted with a tensile force so as to be extended in a length direction. Thus, there is made a core glass bar having a desired length. The core glass bar is fixed at the center of a mold(21) having a structure comprising upper and lower fixing holes(22,23), and the mold is filled up with melt solution. An optical fiber material is made by slowing cooling the mode filled up with the melt solution. After heating the optical fiber material over the glass transient temperature, the optical fiber is made through a well-known manner.
Abstract:
PURPOSE: A method for forming two conductive layers insulated therebetween on an optical fiber is provided to form an electrode for polling the optical fiber by forming conductive layers at the optical fiber of a single mode or a multiple mode. CONSTITUTION: A plurality of grooves(120,121) are formed on an upper surface of a substrate(110). A plurality of optical fibers(126,127) are adhered on the grooves(120,121) by using photoresist(130,131). A photoresist pattern(140) is formed on a surface of the optical fibers. A plurality of conductive layers(145,145a,145b) are formed on the resultant including the photoresist pattern. The photoresist pattern is removed. The optical fibers are separated from the grooves. The conductive layer is removed from the photoresist pattern. The conductive layers are formed on an opposite side to the conductive layer.
Abstract:
PURPOSE: Provided is a clad mold for producing optical fiber by a melting method which can be prepared economically in a simple process, and thereby it is possible to prevent a parent material of optical fiber from being contaminated by impurities and deteriorated in its quality. CONSTITUTION: The mold of clad(10) for producing a parent material of optical fiber comprises a clad mold(11) of a pipe shape having an end closed, a predetermined length and an inner diameter corresponding to a diameter of a clad; and a cylindrical core rod(12) attached to the closed end of the clad mold(11) in the same axis as the clad mold(11) and having a predetermined length and an outer diameter corresponding to a diameter of a core to be formed. The clad mold is prepared by (i) pouring melted glass to a hollow of the mold of clad(10), followed by solidifying the glass to form a clad; (ii) removing the clad mold(11); (iii) removing the core rod(12); and (iv) inserting a core rod into a hollow formed by removing the core rod in the step (iii).
Abstract:
PURPOSE: A multi-channel wavelength division multiplexer/demultiplexer is provided to embed a wavelength channel selector for unlimitedly expanding the number of wavelength channel of a wavelength-multiplexed optical signal by using a 50:50 power splitter and a BSF(Band Splitting Filter). CONSTITUTION: BSFs(420,420') split a band of a wavelength-multiplexed optical signal according to M bands. Demultiplexers(430) divide wavelength channels in the bands split through the BSFs(420,420') according to single wavelength channels. A multiplexer combines the single wavelength channels divided through the demultiplexers(430).