photodetector фотоприймач 2 UHF range 1 WDM technology 1 WDM технології 1 background light noise 1 brightness 1 code 8-4-2-1 1 constructive-technological solution 1 direct conversion 1 dynamic range 1 high frequency range 1 intensity 1 light-emitting diode 1 optical ADC 1 optical channel 1 optical communication 1 optocoupler 1 photosensitivity 1 physical topological model 1 punch-through effect 1 reverse current 1 semiconductor structure 1 space charge region 1 thin base 1 voltage surge suppressor 1 ВЧ диапазон 1 УВЧ діапазон 1 динамічний діапазон 1 код 8-4-2-1 1