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Optical fibers are not immune to ________

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Optical fibers are not immune to ________

(a) electronic disturbances

(b) magnetic disturbances

(c) ambient light interference

(d) electromagnetic disturbances

This question was posed to me in an online quiz.

I want to ask this question from Optical Fiber Sensors topic in chapter Physiological Transducers of Biomedical Instrumentation

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Correct choice is (c) ambient light interference

To explain: Optical fibre sensors are non-electrical and hence are free from electrical interference usually associated with electronically based sensors. Ambient light can interfere. Consequently, the sensor has to be applied in a dark environment or must be optically isolated.

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