Question

On the bases of application of optic fiber sensor, which of the following is not considered to be the classification of fiber optic sensor?

(a) biomedical/photometric  sensors

(b) physical sensors

(c) thermal sensors

(d) chemical sensors

I got this question by my school teacher while I was bunking the class.

This question is from Optical Fiber Sensors in portion Physiological Transducers of Biomedical Instrumentation

Answer 1

Correct choice is (c) thermal sensors

Explanation: The variations in the returning light are sensed using a photodetector. Such sensors monitor variations either in the amplitude or frequency of the reflected light. Two of the most important physical parameters that can be advantageously measured using fibre optics are temperature and pressure.