Now showing items 1-5 of 5
Microbend loss fiber optic direction and amplitude sensors for underwater applications
(Acoustical Society of America, 1990-07-01)
Dual purpose fiber optic microbend loss sensors have been developed for measurement of underwater acousticwave amplitudes and for detection of the direction of wave propagation. Three different construction schemes for ...
Miniaturized Fiber-Optic Michelson-Type Interferometric Sensors
(Optical Society of America, 1991-03-01)
We present a novel, miniaturized Michelson-type fiber-optic interferometric sensor that is relatively insensitive to temperature drifts. A fused-biconical tapered coupler is cleaved immediately after the coupled length and ...
Effect Of External Index Of Refraction on Multimode Fiber Couplers
(Optical Society of America, 1995)
The dependence of the performance of fused-taper multimode fiber couplers on the refractive index of the material surrounding the taper region has been investigated both theoretically and experimentally. It has been ...
Fiberoptic Temperature Sensors Based on Differential Spectral Transmittance Reflectivity And Multiplexed Sensing Systems
(Optical Society of America, 1995-07-01)
A concept for optical temperature sensing based on the differential spectral reflectivity/transmittance from a multilayer dielectric edge filter is described and demonstrated. Two wavelengths, lambda(1) and lambda(2), from ...
Split-Spectrum Intensity-Based Optical Fiber Sensors For Measurement Of Microdisplacement, Strain, And Pressure
(Optical Society of America, 1996-08-01)
A self-referencing technique compensating for fiber losses and source fluctuations in reflective air-gap intensity-based optical fiber sensors is described. A dielectric multilayer short-wave-pass filter is fabricated onto ...