Fiber optic sensor technology offers the possibility of sensing different parameters like strain, temperature and pressure in harsh environment and remote locations. These kinds of sensors modulate some features of the light wave such as intensity, phase and wavelength in an optical fiber or use optical fiber as a medium for transmitting the measurement information. The advantages of fiber opti...

A simple and compact fiber optic sensor based on a two-core fiber is demonstrated for high-performance measurements of refractive indices (RI) of liquids. In order to demonstrate the suitability of the proposed sensor to perform high-sensitivity sensing in a variety of applications, the sensor has been used to measure the RI of binary liquid mixtures. Such measurements can accurately determine ...

The instrumental phase stability of the ATA will be almost entirely a function of the stability of the runs of single-mode fiber optic cables that carry the wideband RF signal band (0.5 to 11.2 GHz) back to the central processing facility. In a more conventional interferometric array, errors in the frequency distribution and elements of the LO system are major contributors to variations in the ...

Waveguide-based cavity ring-down spectroscopy (CRD) can be used for quantitative measurements of chemical concentrations in small amounts of liquid, in gases or in films. The change in ring-down time can be correlated to analyte concentration when using fiber optic sensing elements that change their attenuation in dependence of either sample absorption or refractive index. Two types of fiber ca...

Current super-resolution structured illumination microscopes (SR-SIM) utilize relatively expensive electro-optic components and free-space optics, resulting in large setups. Moreover, high power laser sources are required to compensate for the losses associated with generating pattern by diffractive optics. Here, we present a highly compact flexible 2D SR-SIM microscope based on all-fiber optic...

Spaceborne Fiber Optic Data Bus (SFODB) is an IEEE 1393 compliant, gigabit per second, fiber optic network specifically designed to support the real-time, on-board data handling requirements of remote sensing spacecraft. The network is fault tolerant, highly reliable, and capable of withstanding the rigors of launch and the harsh space environment. SFODB achieves this operational and environmen...

OBJECTIVE To assess the relationship between in vivo measurements of optic disc topography and histomorphometric measurements of optic nerve fiber number in glaucoma. METHODS Both eyes of 10 monkeys (Macaca fascicularis) with laser-induced glaucoma in the right eye were studied. Optic disc topography was measured in vivo with a confocal scanning laser ophthalmoscope. Histomorphometry was perf...