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According to the modulation form of the measured object, the light can be divided into: intensity modulation type, polarization type, phase type, and frequency type;
According to whether light interferes, it can be divided into: interference type and non-interference type;
According to whether the measurand can be continuously monitored as the distance increases, it can be divided into: distributed and point fraction;
According to the role of optical fibers in sensors, they can be divided into: one type is functional (Functional Fiber, abbreviated as FF) sensors, also known as sensing sensors; the other type is non-functional (Non Functional Fiber, abbreviated as NFF), also known as It is called a light-transmitting sensor.
