Electronics and Telecommunications Research Institute

Samsung Electronics Co., Ltd.

Wooriro Co., Ltd.

Other

Samsung Electro-Mechanics Co., Ltd.

Korea Telecom

Id Quantique Sa

Wooriro Optical Telecom Co., Ltd.

Photonic Solution, Inc.

Ppi Technology Inc.

Wooriro Optical Telecom

Chan Yong Park

Seon Hee Park

Sung-Il Chang

Changseok Kang

Seung Won Lee

Dug Bong Kim

Byeong-In Choe

Soo Jun Park

Dae Hee Kim

Sung Hee Park

Soo Hyun Baek

Youngwoo Park

Jintaek Park

Kwang Ryong Oh

Jeong Soo Kim

Chul Woo Park

Kwang Eui Pyun

Joon Ho Lim

Je Ha Kim

Sun Ki Min

Hong Ki Kim

Jung Hyun Kim

Sang Hwan Lee

Jongsun Sel

Gap Youl Lyu

Seoung Hwan Park

Min Hee Kang

Seok Beom Cho

Joon-Ho Lim

Hong Man Kim

Young Hye Kim

Kil Hun Koo

Hyung Myung Moon

Jin Bong Kim

A photon detection device having a high light detection efficiency. The photon detection device includes a first light reception part which receives a gate signal and outputs a first signal; a second light reception part which receives a gate signal and outputs a second signal; and a determination part which determines whether or not a photon is received, on the basis of the first signal from the first light reception part and the second signal from the second light reception part. The photon is incident on the first light reception part among the first light reception part and the second light reception part, and the breakdown voltage of the second light reception part is higher than the breakdown voltage of the first light reception part.

Detection of photon by pairing avalanche photodiodes with different threshold voltages

According to an embodiment, a single photon detector configured to reduce a dark current comprises a buffer layer, a light absorption layer, a grading layer, an electric field control layer, and a window layer sequentially formed on a substrate. An active area may be formed in the window layer. A barrier junction may be formed through the window layer up to at least a portion of the light absorption layer, around the active area.

Single photon detector and system for minimizing dark current

An avalanche photodiode includes: a first contact layer; a light absorbing layer located on the first contact layer and having a multi-quantum well structure; a first electric field control layer located on the light absorbing layer; and a carrier multiplication layer located on the first electric field control layer. At least one of the multi-quantum well structure includes a well layer that includes GaAlN (0&#x2264;X&#x2264;0.3), and a barrier layer that includes GaAlN (0.7&#x2264;X&#x2264;1) and a doping portion doped with a p-type dopant.

Avalanche photodiode

An optical integrated circuit comprises optical waveguides, grooves formed by etching the upper cladding layer, the core layer and all or parts of the lower cladding layer close to a end section of the optical waveguide to intercept light transmitted through the core layer of the optical waveguide or to couple light into the core layer, a plurality of bonding pads formed around the groove, micro-mirrors and active optical elements. Such a PLC based optical integrated circuit and a method of manufacturing the same provides a low-cost manufacturing of optical integrated circuits and high quality mirrors for vertical optical coupling scheme.

Optical integrated circuit comprising light path turning micro-mirror inside the optical waveguide and method of manufacturing the same

The inventive concept relates to a health care system, and more particularly, to a health care server of the health care system and a method of operating the same. The health care server includes a symptom collection module collecting clinical information of patient from a hospital server and health information of patient from an individual health record server; an alarm and reaction rule management module generating an alarm rule on the basis of the clinical information and the health information; and an alarm generation module monitoring the health information or the clinical information and generating an alarm when the monitored health information or the clinical information corresponding to the alarm rule. The health care server can provide a different alarm service to a patient having a different health state with reference to clinical information and health information of each patient.

Health care server and method of operating the same

A nonvolatile memory device including a dummy memory cell and a method of programming the same, wherein the nonvolatile memory device includes a dummy memory cell, and a plurality of memory cells serially connected to the dummy memory cell. The nonvolatile memory device sets a voltage provided to the dummy memory cell according to a distance between a selected memory cell among the plurality of memory cells and the dummy memory cell when a program operation is performed.

Nonvolatile memory device including dummy memory cell and program method thereof

A nonvolatile memory device preventing a program disturb, a program method thereof and a memory system including the nonvolatile memory device and the program method. The nonvolatile memory device includes a memory cell array; first and second word lines connected to a NAND string in the memory cell array; a third word line connected to the NAND string, the third word line being disposed between the first and second word lines; a temperature sensor configured to measure the temperature of the nonvolatile memory device; and a voltage generator configured to generate first and second pass voltages and a program voltage, and the voltage level of at least one of the first and second pass voltages is controlled according to the measured temperature. When a program operation is performed, the program voltage is applied to the third word line, the first pass voltage is applied to the first word line, the second pass voltage is applied to the second word line.

Nonvolatile memory device, programming method thereof and memory system including the same

Disclosed are a universal adapter for the personal health device (PHD) standardization of a non-standardized healthcare device and an operating method thereof. The universal adapter includes: an adapter interface device communicating with a non-standardized healthcare device, which does not follow PHD standardization, to collect measurement data measured by the non-standardized healthcare device; and a universal adapter device receiving the measurement data from the adapter interface device, generating a PHD standard message including the received measurement data, and transmitting the PHD standard message to a PHD gateway according to a PHD standard communication scheme.

Universal adapter for personal health device standardization of non-standardized healthcare device and operating method thereof

Provided are nonvolatile memory devices and methods of operating thereof. The nonvolatile memory devices include: dummy cells connected to a dummy bit line; and a dummy bit line bias circuit providing a dummy bit line voltage to the dummy bit line during a program operation, wherein, due to the dummy bit line voltage, at least one of the dummy cells is programmed with a threshold voltage lower than the top programmed state and higher than an erased state during the program operation.

Nonvolatile memory devices having dummy cell and bias methods thereof

An optical signal detector is provided that detects an optical signal from an optical source using a plurality of optical sensors having different wavelength selectivities, thereby determining the peak wavelength of the optical signal and measuring the power of an optical signal corresponding to the peak wavelength. According to the optical signal detector, separate optical filters are not required and space and costs attributable to the installation of the optical filters can be saved, and thus there are effects in that the overall size and manufacturing costs of the device can be reduced.

Optical signal detector

A laser measuring device maintains high responsivity irrespective of changes in surrounding environment, provides more correct measurement and long distance measurement due to reduced noise, and ensures the safety and reliability of a product. A first light emitter emits first wavelength light having a first wavelength. A second light emitter emits second wavelength light having a second wavelength, the second light emitter being arranged perpendicular to the first light emitter. An optical mirror allows one of the first wavelength light and the second wavelength light to pass but reflecting the other one. A first band pass filter for allows the first wavelength light to pass. A second band pass filter allows the second wavelength light to pass. A light receiver receives incident light, which arrives through one of the first and second band pass filters. A controller activates at least one of the first and second light emitters.

Laser measuring device

Provided are an apparatus and method of searching a protein active site. The apparatus includes a database which stores information on a plurality of reference active sites, a comparing unit which calculates 3D structural similarities according to the number of overlapping residues, with respect to an input active site and the stored reference active site, and a search unit which searches the reference active site with respect to the input active site according to the similarities. Accordingly, similar active sites can be searched with a low computational complexity, thereby be used for a correct new drug design.

Apparatus and method for searching protein active site

Provided is a system for and method of extracting and clustering information. The system includes a clustering criterion designing unit that reconstructs a plurality of clustering criteria for each layer or applies weights to the plurality of clustering criteria in order to design a new clustering criterion, an input data processing unit that extracts characteristics from input data according to the new clustering criterion, and a clustering unit that performs clustering on the extracted characteristics.

System for and method of extracting and clustering information

A hybrid integrated structure of an optical active device and a Planar Lightwave Circuit (PLC) device using an optical fiber array is provided, in which one or more photodiodes are integrated on an upper cladding layer above one or more planar optical waveguides. A section located on a boundary surface between output optical waveguides, that is, an end of the PLC device in the direction of propagation of light, and the input end of an output optical fiber array is ground to be inclined at a predetermined angle with respect to an optical axis. Further, one or more optical fibers and one or more reflection mirrors are alternately arranged, inserted, and disposed in a plurality of V-shaped trenches formed in the output optical fiber array.

Hybrid integrated structure of one or more optical active devices and PLC device using optical fiber array

The present invention relates to an optical filter whose a sidelobe disturbing a characteristic of an optical filter by weighting an optical coupling efficiency between waveguides is controlled upon applying a selective area growth method in a wavelength selective variable semiconductor optical filter and method of fabricating the same. The present invention can control the thickness of growth layer selectively by controlling the width of the dielectric thin film mask whose the growth is not achieved in the selective area growth method, can control the distance between two waveguides of the wavelength selective variable semiconductor optical filter by applying the result on the distance control between two waveguides. Accordingly, there can be changed an optical coupling efficiency between two waveguides spatially. Because the sidelobe characteristics is largely improved if the distance between two waveguides is controlled temporarily to be corresponded to one period of Hamming function, there can be fabricated a semiconductor optical filter whose the characteristic is very excellent when applying the present invention.

Grating-assisted co-directional vertical coupler optical filter having well-suppressed sidelobe characteristics and method of fabricating the same

Growing community of inventors

Gwangju, South Korea

Chan Yong Park