RIM-FODS (reflective intensity-modulated fiber optic displacement sensor) has simple structure, low construction cost, agile design, mal-condition working characteristic and extensive application, so it plays a very important part in fiber optic sensors.

In this paper, A new technique for the multiplexing of intensity modulated optical fiber point sensors using TDM technology and a frequency domain approach is described.

In this paper, A new technique for the nultiplexing of intensity modulated optical fiber point sensors using TDM technology and a frequency domain approach is proposed.

Optimum design of the modulator in the novel spectropolarimeter based on intensity modulation;

In a reflective fiber optic displacement sensor, the influence on intensity modulation property caused by the reflector shape was studied theoretically with the mathematic model found.

Among the theoretical and experimental research of the reflective intensity modulated fiber optic sensor (RIM FOS), a very important problem is always neglected, which is the effect on the intensity modulation caused by perpendicularity between the axis of fiber pairs and the reflector, i.

In this paper,a reflective intensity modulation optical fiber sensor with simple structure and easy design has been introduced.

The module is made of high speed amplifier, AGC circuit, digital logical circuit, intensity modulator drive circuit, and intensity modulator.

This new device is composed by DSP,intensity modulator,intensity modulator drive circuit,high speed amplifier,AGC circuit,light detect and amplify circuit,the circuit of pulse detect and reserve,and so on.