We describe the design, construction, and application of what are believed to be the smallest fiber-optic probes used to date during imaging or diagnosis involving low-coherence interferometry (LCI). The probes use novel fiber-optic gradient-index (GRIN) lenses fabricated by a recently developed modified chemical-vapor-deposition (MCVD) process that avoids on-axis aberrations commonly marring M...

A robust fluorescence correlation spectroscopy system called fiber-optic based (FB-FCS) was developed; this enables the measurement of diffusion dynamics and concentration fluorescent molecules on principle without any mechanical adjustment experimental setup. The consisted fiber optics a water-immersion objective lens. hydrodynamic diameters concentrations organic dyes fluorescently labeled pr...

Laser diode beam divergence is the main parameter for beam shaping and fiber optic coupling. Increasing the waveguide layer thickness is the conventional method to decrease the beam divergence. In this paper, the broadened asymmetric waveguide is introduced to decrease the divergence without increasing the optical power. The asymmetric waveguide was used to shift the vertical optical field to n...

A fiber optic channel is modeled in a variety of ways; from the simple additive white complex Gaussian noise model, to models that incorporate memory in the channel. Because of Kerr nonlinearity, a simple model is not a good approximation to an optical fiber. Hence we study a fiber optic channel with finite memory and provide an achievable bound on channel capacity that improves upon a previous...

Determination of lactate dehydrogenase (LDH) activity in the SMAC (Technicon) is based on the change in NADH absorbance between two flow cells. We noted that results for patients' specimens and controls changed when the fiber optic terminations for the two LDH channel flow cells were adjusted or "peaked" at the colorimeter chopper assembly. The energy (intensity) of light reaching the flow cell...

Tracking electrolyte chemistry and turbidity by fiber optic sensors.

The setup of fiber-optic telecommunication networks involves high investment efforts. The Regional Government of Andalusia assigned us the development of a tool capable of evaluating the deployment cost of a network that was not to be limited only to connecting large cities, but also to include smaller towns, in order to prevent them from staying behind the progress of the Information Society. ...

A fiber-optic quasi-distributed strain sensors ring network has been designed based on a Mach-Zehnder optical paths interrogator. The optical paths matching for each sensor are discussed, and the optical power budgetary analysis is performed. The relation between the number of sensors and the intensity of the signals of the ring network is given for evaluation of the multiplexing capacity. Expe...

Ultra high bandwidth properties of fiber-optic signal processing systems could provide the necessary processing power for computationally demanding two-dimensional signal processing applications. The techniques of fiber-optic signal processing so far have not been applied to the area of two-dimensional signal processing. Further the matured fields of integrated optics and integrated photonics a...

Deflection Routing is a key technique to resolve contention in optical burst-switched networks. Considering three different deflection routing strategies, we investigate the influence of network topology and of burst length on network performance in terms of dropping probability. OCIS codes: (060.0060) Fiber optics and optical communications; (060.4250) Networks