|N| is a falling edge trigger command, which detects the falling edge of the signal and generates a pulse with a scanning period width.
Two instructions are used to detect the change of state (the signal appears or disappears).
Extended data:
Common PLC splitters are all made of silicon dioxide (SiO2), but in fact, PLC technology involves a wide range of materials, such as glass/silica (Shi Ying /SiO2/SiO2) and lithium niobate (LiNbO3).
III-V semiconductor compounds (such as InP, GaAs, etc. ), silicon on insulator (SOI/SIMOX), silicon oxynitride (SiON), polymer, etc.
Devices based on planar optical waveguide technology include splitter, star coupler and variable optical attenuator (VOA).
Optical switch, optical comb and arrayed waveguide grating (AWG). According to the requirements of different applications (such as response time, ambient temperature, etc. ).
These devices can be made of different material systems and processing technologies. It is worth mentioning that these devices are all optical passive devices and are independent. They can be combined with each other or other active devices to form high-end devices with different functions.
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