A Simple All-Optical Water Level Monitoring System Based on Wavelength Division Multiplexing with an Arrayed Waveguide Grating. - Hoon-Keun Lee; Jaeyul Choo; Gangsig Shin (Sensors, 2019)

Long-Reach DWDM-Passive Optical Fiber Sensor Network for Water Level Monitoring of Spent Fuel Pool in Nuclear Power Plant. - Hoon-Keun Lee; Jaeyul Choo; Gangsig Shin; Joonyoung Kim (Sensors, 2020)