Fiber Optic Displacement Sensor Working

Let us understand fiber optic sensor working principle of different types of fiber optic sensors.

Fiber optic displacement sensor working.

Depending on the application fiber may be used because of its small size or because no electrical power is needed at the. Fiber optic sensors work based on the principle that light from a laser or any superluminescent source is transmitted via an optical fiber experiences changes in its parameters either in the optical fiber or fiber bragg gratings and reaches a detector which measures these changes. Using the characteristic that the distance apart between the emitting fiber and receiving fiber only shifts the angular power curve a differential reflective fiber optic sensor for angular displacement measurement is presented through subtraction of two power signals from two receiving fibers placed on both sides of one emitting fiber. Fibers have many uses in remote sensing.

Principle and major types the optical fiber consists of the core and the cladding which have different refractive indexes. A fiber optic sensor is a sensor that uses optical fiber either as the sensing element intrinsic sensors or as a means of relaying signals from a remote sensor to the electronics that process the signals extrinsic sensors. The fotonic sensor is a non contact instrument which uses the fiber optics lever principle to perform displacement measurement vibration analysis and surface condition measurements. The fiber optic sensor has an optical fiber connected to a light source to allow for detection in tight spaces or where a small profile is beneficial.

Principle description and working light is sent through a transmitting fiber and is made to fall on a moving target. Displacement fiber optic sensor extrinsic sensor. As shown it consists of light source optical fiber sensing element or transducer and a detector. The reflected light from the target is sensed by a detector.

Fiber optic sensors working principle. The fotonic sensor transmits a beam of light through a flexible fiber optic probe receives light reflected from a target surface and converts this light into an electrical signal proportional to the distance.