Advantages of Fiber Optical Sensors
Fiber Optic Sensors have some big advantages over their electrical equivalents.
Fiber optic based measurement solutions are present for quite some time. Therefore fiber optics sensors don't sound like the latest state-of-the-art measurement solution. But they are. This is a new technology based on White Light Polarization Interferometry (WLPI), which offers great benefits over its older competitors who are using fiber optic technologies such as Fiber Bragg Grating (FBG).
How do we compare?
Fiber optic sensors in general have some big advantages over their electrical equivalents such as their immunity to electromagnetic interferences and high voltages, being intrinsically safe, being insensitive for lightning strikes, and their potential small size, just to mention a few. But the white light polarization (WLPI) technology has even more advantages compared to the other fiber optic technologies available in the industry.
Easier to deploy
Compared to other fiber optic sensor technologies the WLPI technology is an extrinsic system, which means the fiber is the medium and not the sensing element. The sensor is attached at the very end of the fiber. The main advantage with this extrinsic system is the fact that the fiber is just the link from the light signal to the sensor. Therefore it can be easily adapted in length for example. It's plug and forget.
Easier to adapt
Our sensors are always adapted to fit the requirements of the application. A pressure gauge for fuel level monitoring has a different design than our sensors designed to monitor the pressure level in the hydraulic system of the landing gear. It?s the same technology, but with specific sensor designs.
The WLPI sensors are not affected by light intensity variations, because they are not based on the intensity variations but on the length variation of the interferometric cavity. This means that optical losses have no influence on the performance of the system.
White light is safer than laser light beams in terms of energy produced.
MTBF is 100.000h when used at maximum intensity continuously, in practical the light source is rarely even operating at 50% of the maximum intensity.
Because white light is used there will be no maintenance needed during its entire lifecycle, other technologies using a laser light source will face operational maintenance on the laser.
Lightweight and miniature
The sensors can be very miniature and besides that all of the instrumentation needed can be fitted on a board having the size of a credit card which is unique in the industry.
Immune to High voltages and EMI
This opens doors for measurement applications in harsh environments where traditional sensors usually will not work at all.
Resist high temperatures
The Fiber Optic Sensors can be designed in such a way that they can be deployed in very harsh environments up to 300 °C.