Reflectance optical sensor array

Determination of Reflectance Optical Sensor Array Configuration Using 3-Layer... 

Therefore, this study is conducted with objective to determine the most suitable configuration of the reflectance optical sensor array based on the highest Irradiance value. To achieve the objective, the light propagation through the tissue model mimics the pregnant women s abdomen will be simulated. 

C. Reflectance Optical Sensor Model and Configuration of Sensor Array... 

Most present-day fiber-optic sensors use linear diode arrays combined with optical gratings and measure the absorption, transmission, fluorescence, and reflection in UV, visible, and NIR regions (see Table 3.1). Light travels to the sampling probe via one fiber-optic cable and returns to the instrument via a second. Laser excitation permits long-distance transmission of excitation radiation to get a useful signal from the sample. 

Another unique capability of FBG sensor is the multiplexing [45], i.e., a number of FBG sensors can be inscribed into a single optical Fiber. Each individual FBG sensor reflects back a spectrum centered in a wavelength different from one another (Figure 5), thus creating an array of strain sensors suitable to monitor large structures. 

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