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폴리이미드가 코팅된 광섬유 브래그 격자를 이용한 습도센서
양재창,김건표,김광택,Jae Chang Yang,Gun Pyo Kim,Kwang Taek Kim 한국전기전자재료학회 2023 전기전자재료학회논문지 Vol.36 No.6
We have proposed and demonstrated a fiber optic RH (relative humidity) sensor based on fiber Bragg grating covered with a polyimide film. As the polyimide film absolves the moisture in the air, its volume expands. As a result, the grating period of the FBG (fiber Bragg grating) covered with a polyimide film becomes wide and the Bragg wavelength is shifted. The sensor is implemented by fixing a 30 ㎛ thickness polyimide film on the surface of an optical fiber grating using an adhesive, and the characteristics of the device according to humidity are analyzed. The fabricated FBG RH sensor showed a high sensitivity of 0.0186 nm/RH% and a wide measurement range from 30% to 90%. The influence of environmental temperature on the characteristics of the RH sensor was also measured and analyzed. The feasibility of commercialization is presented.
폴리이미드가 코팅된 광섬유 브래그 격자를 이용한 습도센서
양재창,김건표,김광택 한국전기전자재료학회 2023 전기전자재료학회논문지 Vol.36 No.6
We have proposed and demonstrated a fiber optic RH (relative humidity) sensor based on fiber Bragg grating covered with a polyimide film. As the polyimide film absolves the moisture in the air, its volume expands. As a result, the grating period of the FBG (fiber Bragg grating) covered with a polyimide film becomes wide and the Bragg wavelength is shifted. The sensor is implemented by fixing a 30 ㎛ thickness polyimide film on the surface of an optical fiber grating using an adhesive, and the characteristics of the device according to humidity are analyzed. The fabricated FBG RH sensor showed a high sensitivity of 0.0186 nm/RH% and a wide measurement range from 30% to 90%. The influence of environmental temperature on the characteristics of the RH sensor was also measured and analyzed. The feasibility of commercialization is presented.
폴리이미드가 코팅된 측면 연마 광섬유를 이용한 습도 센서
김광택,양재창 한국센서학회 2023 센서학회지 Vol.32 No.1
We investigated a humidity sensor based on a polyimide-coated side-polished optical fiber. The polyimide film absorbed moisture, causing the resonant wavelength of the sensor to shift to a longer wavelength owing to the changes in the optical properties of the film. The experimental results showed that the resonant wavelength of the device shifted by 17–18 nm when relative humidity changed from 30% to 90%.
염료감응 태양전지를 이용한 선박용 LED등의 보조 전원 개발
이진(Jin Lee),양재창(Jae-Chang Yang),김상기(Sang-Ki Kim),소순열(Soon-Youl So) 대한전기학회 2014 전기학회논문지 Vol.63 No.9
The color and the installation position of the LED lamp for night voyage of the ship are changed by the purpose of it. The power dissipation occurs because a navigation light is on and off or continuously on. In addition, in case that the light is produced by operating generator in the ship, it’s very inefficient except that it’s on a voyage. Therefore in this dissertation, we construct auxiliary power system for the LED lamp of the ship, producing and developing a module, a panel, and a charging system using Dye-sensitize Solar Cell.