Electronics Letters · 1995 · 30 citations · 1 references
EngineeringElectrical EngineeringSystems EngineeringOpticsPhotonicsSensorsFiber OpticsOptical FibersOptical InstrumentationOptical InstrumentsOptical SensingOptical SensorsBragg Grating SensorsFiber Bragg Grating SensorsFiber Bragg GratingsFiber SensorsFiber-optic SensingFiber-optic SensorsMicrostrainOptical Fiber Sensors
The authors demonstrate for the first time an electronic lock-in system using an acousto-optic tunable filter (AOTF) to track the wavelength of a fibre Bragg grating. The change in the system output is proportional to the change in grating wavelength. Initial results show microstrain resolution at data acquisition rates of 10 Hz.
1