Explain working of Intensity-based displacement sensor using optical fiber.

With neat diagram explain the working of Intensity based displacement sensor using optical fiber.

Answer:-

Working:

Light from the source is transmitted through the transmitting fiber and is made to fall on the moving target.

The light reflected from the target is made to pass through the receiving fiber and the same is detected by the detector. Based on the intensity of the light received, the displacement of the target can be measured, (i.e.) if the received intensity is more than we can say that the target is moving towards the sensor, and if the intensity is less, we can say that the target is moving away from the sensor.