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. 2018 Oct 26;18(11):3632. doi: 10.3390/s18113632

Figure 2.

Figure 2

Opto-electronics system for the designed sensor. Light sources are two different wavelength Thorlabs fibre-coupled LEDs (660 nm and 850 nm). The photodetector is a Thorlabs PDA36AEC. The data-acquisition system is a National Instruments myDAQ at 16 bits and 20 kHz sampling frequency. The FBG interrogator is a Smart Fibres SmartScan FBG interrogator with 0.8 pm resolution. (I/V—current to voltage converter, DAC—digital-to-analogue converter, ADC—analogue-to-digital converter and PC—personal computer).