Design and operation of a double-fiber displacement sensor

Operation of an opto-mechanical system using a double-cell design for liquid color recognition

“…13 the first signal shows the result for the cell filled with the black soda liquid and the second peak shows for the empty cell, respectively. For the black color liquid in the left flat cell the maximum reflection signal is 9.28 mV while for the empty air cell is 16.53 mV at the specified scanning distances, respectively. The average background signal recorded for this run is about 4.0 mV.…”

“…Some of the successful optical fiber designs are reported by author [13][14][15] which, are based on the intensity modulation. The applications of the plastic double-fiber design in different sensing schemes are described [16,17].…”

Beam shape and intensity profile of a fiber-bundle prism-coupled waveguide

“…Each spot on the picture shows the output of the single fiber in bundle, which is circular in shape and almost similar in cross section. The number of light spots (12) are corresponding to the number of the illumination fibers in the cable. In another study the taken photograph pictures at a distance of about 1 and 3 mm from the fiber bundle tip are compared.…”

“…1, it includes a light source illuminating the fiber bundle, a large size silicon photodetector, a power meter, a multimeter, digital and CCD cameras, the interface card for the CCD camera, and a PC. The output of CCD camera and digital multimeter are connected via interface boards to a PC and signal processing and camera control is accomplished by using the related software [12,13]. Optical fibers such as the one used here are used as waveguides in the design of optical fiber sensors in different applications [14,15].…”

Fiber optic intensity sensor referenced with virtual instrumentation for measuring displacement

“…More recently, K. S. Binu et al reported an extrinsic fiber optic displacement sensor for the measurement of amplitude and frequency of vibration 5 . H. Golnabi et al studied a displacement sensor where the reflection of metallic and non-metallic surfaces, like aluminum, copper, and bronze sheets, causes intensity modulation 6 . In this paper, we present a displacement self-referenced fiber optic intensity sensor based on the deformation of a fiber taper, where the time delay required for the referentiation method is performed using virtual instrumentation techniques supported on a LabVIEW® platform.…”