0000000000060491
AUTHOR
Paola Barrios
Fast response vibration sensor based on Bragg gratings written in tapered core fibres
Bragg gratings written in tapered core fibres permit a direct measure of mechanical vibrations with a time response better than 10 µs. The intrinsic properties of the sensors lead to a simple interrogation technique and wavelength multiplexing capacity. The sensor system is operated at 800 nm and is compact and low-cost.
Fiber-Optic Aqueous Dipping Sensor Based on Coaxial-Michelson Modal Interferometers
Fiber-optic modal interferometers with a coaxial-Michelson configuration can be used to monitor aqueous solutions by simple dipping of few centimeters of a fiber tip. The fabrication of these sensors to work around 850 nm enables the use of compact, robust, and low-cost optical spectrum analyzers. The use of this type of portable sensor system to monitor sewage treatment plants is shown.
Fast Response Vibration Sensor Based on Bragg Gratings Written on Tapered Core Fibers
Bragg gratings written in tapered core fibers are used to measure mechanical vibrations with a time response better than 10 μs. The system is compact, low-cost and can be wavelength multiplexed.