Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Chan Il Yeo"'
Autor:
Siwoong Park, Chan Il Yeo, Young Soon Heo, Ji Hyoung Ryu, Hyun Seo Kang, Dong-Seon Lee, Jae-Hyung Jang
Publikováno v:
Sensors, Vol 22, Iss 20, p 7770 (2022)
Free space optical (FSO) communication can support various unmanned aerial vehicles’ (UAVs) applications that require large capacity data transmission. In order to perform FSO communication between two terminals, it is essential to employ a pointin
Externí odkaz:
https://doaj.org/article/915b553eaae94d68a774cd1645e4473a
Publikováno v:
IEEE Photonics Journal, Vol 6, Iss 3, Pp 1-9 (2014)
We present bifunctional nanostructured (NS) coverglasses with enhanced transmittance and self-cleaning function for improving the efficiency of a photovoltaic (PV) module with an InGaP/GaAs/Ge triple-junction solar cell. Prior to the fabrication of N
Externí odkaz:
https://doaj.org/article/797a41c236fb45fb95d5c2510cc2b80c
Publikováno v:
2022 13th International Conference on Information and Communication Technology Convergence (ICTC).
Publikováno v:
2022 13th International Conference on Information and Communication Technology Convergence (ICTC).
Publikováno v:
Optics Express. 30:47017
This study proposes a liquid-crystal-based active wavelength filter for phase-sensitive optical time domain reflectometry to mitigate the amplified spontaneous emission (ASE) noise and accurately match the passband with the light source. The validity
Publikováno v:
OFC
We present a full-duplex mobile FSO system that provides a 2.5 Gbps single channel based on the 2.5 GBASE-T standard. We successfully confirm that the data transmitted 2.3 Gbps even in heavy rain and thick smoke.
Fiber optic sensor network for a monitoring and diagnosis system of the underground 22.9K XLPE cable
Publikováno v:
OFC
For monitoring of the underground power cables, we proposed an optical sensor network. When the surface temperature of the power cable has increased from about 40 °C we confirmed partial discharge amplitude was significantly reduced.
Autor:
Jae-Hyung Jang, Young Soon Heo, Hyun Seo Kang, Chan Il Yeo, Siwoong Park, Ji Hyoung Ryu, Sung Chang Kim
Publikováno v:
Optics Communications. 494:127041
This paper presents simple and compact mobile free-space optical (FSO) terminals based on a common optical path with an adaptive beamforming function to provide an enhanced Gbps out-of-band full-duplex connection between a ground control system and a
Publikováno v:
Laser Congress 2019 (ASSL, LAC, LS&C).
We present common path-based optical terminals designed for full-duplex free-space optical (FSO) communications to apply for unmanned aerial vehicles (UAVs) to ground communication. The FSO terminals were carefully designed by taking into account fli
Autor:
Yonghwan Lee, Jinju Kim, Eun Kyu Kang, Kwangwook Park, YoonBum Lee, Seoc-Mo Kang, Chan Il Yeo, Young Min Song
Publikováno v:
Current Applied Physics. 15:1312-1317
We present flexible thin-film GaAs solar cells fabricated on thermoplastic substrates by a low-pressure cold-welding and epitaxial lift-off process. The use of polyethylene terephthalate (PET) film as a flexible substrate enables cold welding (130 °