As shown it consists of light source optical fiber sensing element or transducer and a detector.
Fiber optic temperature sensor working principle.
Especially the phase modulation type optical fiber sensors attract much attention for the fast and accurate measurement of the external parameters in a large dynamic measurement range.
The general block diagram of fiber optic sensor is shown above.
The fibre optic sensor has an optical fibre connected to a light source to allow for detection in tight spaces or where a small profile is beneficial.
Otp series wlpi otp fiber optics sensors are designed for applications that require the ability to monitor temperature and other parameters with one signal conditioner at the same time and high field mr environment of 3t and above.
The working operation of fiber optic sensor is that transducer modulates some parameter of optical fiber system e g.
In this work we review the optical fiber mach zehnder interferometer mzi for temperature sensing which is widely used these years.
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.
Principle description and working it is based on the principle of interference between the beams emerging out from the reference fiber and the fiber kept in the measuring environment.
Working principle of fiber optic sensors.
Let us understand fiber optic sensor working principle of different types of fiber optic sensors.
Fiber optic sensors working principle the general structure of an optical fiber sensor system is composed mainly of four components that are the source fiber optic transducer and detector.
Temperature fiber optic sensor.
The block diagram consists of optical source light emitting diode laser and laser diode optical fiber sensing element optical detector and end processing devices optical spectrum analyzer oscilloscope these sensors are classified into three categories based on the operating principles.
One of the most popular fiber optic temperature sensors is based on the principle of gallium arsenide gaas semiconductors response to different wavelengths.
Optical sources can be laser led laser diode etc optical fiber type can be single mode or multimode sensing or modulator element which convert the.
The basic working principle of optical fiber sensor is to light from the light source signal through optical fiber to the modulator the parameters and enter the modulation oudeguang interaction under test leading to the optical properties of the light such as light intensity wavelength frequency phase polarization etc change become a modulated signal source after a fiber into light.
Principle and major types the optical fibre consists of the core and the cladding which have different refractive indexes.
