Miniature Assemble Using Vibration For Optical Fiber Array

Miniature multicore optical fiber vibration sensor.

We demonstrate a compact and versatile interferometric vibration sensor that operates in reflection mode. To build the device, a short segment of symmetric strongly coupled multicore optical fiber (MCF) is fusion spliced to a single-mode optical fiber (SMF). One end of the MCF segment is cleaved and placed in a cantilever position. Due to the SMF-MCF configuration, only two supermodes are excit...

A Fiber Optical Sensor For Non–Contact Vibration Measurements

Vibration tests are widely employed in many industrial fields, and in particular in aerospace industry to evaluate the mechanical behavior of parts for aircrafts and satellites. Usually, these tests are carried out with shakers, while inertial accelerometers are used to measure the shaker table acceleration from which the vibration amplitude is computed. Some applications require the measuremen...

[Proceeding] A Fiber Optical Sensor For Non-Contact Vibration Measurements

Endoscopic Optical Coherence Elastography Using Acoustic Radiation Force and Bending Vibration of Optical Fiber

Optical coherence tomography (OCT) is an optical imaging technique that provides high-resolution cross-sectional image for clinical and biological field, and the OCT systems have a depth resolution of less than 10 m. Recently, measurement of hardness using endoscopic OCT is required . Fig. 1 Basic configuration of the endoscopic OCT-based elastography using the focusing transducer and bending v...

Optical fiber interferometer array for scanless Fourier-transform spectroscopy.

We report a spatial heterodyne Fourier-transform spectrometer implemented with an array of optical fiber interferometers. This configuration generates a wavelength-dependent stationary interferogram from which the input spectrum is retrieved in a single shot without scanning elements. Furthermore, fabrication and experimental deviations from the ideal behavior of the device are corrected by spe...