https://scholar.dgist.ac.kr/handle/20.500.11750/11779 Wed, 05 Aug 2026 19:47:28 GMT 2026-08-05T19:47:28Z https://scholar.dgist.ac.kr/handle/20.500.11750/60564 Title: 민감도 및 동적 영역이 조절 가능한 광기계 초음파 센서 및 그 제어 방법 Author(s): 남상우; 유재석; 한상윤; 최동주 Abstract: 본 개시는 초음파 센서 및 그 동작 방법에 관한 것으로서, 더욱 상세하게는 캔틸레버 구조의 멤브레인의 초기 위치를 조절하여 민감도 및 동적 영역이 조절 가능한 광기계 초음파 센서 및 그 제어 방법에 관한 것이다. https://scholar.dgist.ac.kr/handle/20.500.11750/60564 https://scholar.dgist.ac.kr/handle/20.500.11750/60560 Title: 멀티캐스트 스위치 어레이 및 이를 이용한 빔 조향 장치 Author(s): 유경식; 한상윤 Abstract: A multicast switch array and a multi-beam steering device using the same are provided. Accordingly, it is possible to precisely steer a large-scale multi-beam. https://scholar.dgist.ac.kr/handle/20.500.11750/60560 https://scholar.dgist.ac.kr/handle/20.500.11750/59188 Title: REFLECTED OPTICAL WAVELENGTH SCANNING DEVICE PROVIDED WITH SILICON PHOTONIC INTERROGATOR Author(s): 문형명; 한상윤 Abstract: The present invention provides a reflected optical wavelength scanning device provided with a silicon photonic interrogator. The device may comprise: a light source module which outputs broadband light; an optical sensor which receives, through a circulator, the light outputted from the light source module, reflects light of a specific band to the circulator, and transmits light of the other bands other than the specific band; and an interrogator which separates polarized light from the reflected light received through the circulator, and enables the selective incidence of the polarized light. https://scholar.dgist.ac.kr/handle/20.500.11750/59188 https://scholar.dgist.ac.kr/handle/20.500.11750/58822 Title: Programmable photonic circuit Author(s): 유경식; 한상윤 Abstract: A programmable photonic circuit is provided that includes a dimmable optical coupler, an optical phase shifter, and a control unit. The first and second waveguides are disposed in first portions corresponding to each other in a dimmable coupler, the dimmable coupler including a first actuator to adjust an optical coupling efficiency of an optical signal between the first and second waveguides. One of the first and second waveguides and the disturbing waveguide are disposed in a second portion corresponding to each other in the optical phase shifter, and the optical phase shifter includes a second actuator, a perturbation waveguide is provided to vary a phase of an optical signal passing through the one waveguide by varying an effective refractive index of an optical mode of the one waveguide according to a gap between the one waveguide and the perturbation waveguide. The control unit controls drive signals applied to the first and second actuators. https://scholar.dgist.ac.kr/handle/20.500.11750/58822