We report the development of a photon-number-resolving detector based on a fiber-optical setup and a pair of standard avalanche photodiodes. The detector is capable of resolving individual photon numbers and operates on the well-known principle by which a single-mode input state is split into a large number (eight) of output modes. We reconstruct the photon statistics of weak coherent input lig...

In this study, a design methodology for a multi-optical probe confocal imaging system was developed. To develop an imaging system that has the required resolving power and imaging area, this study focused on a design methodology to create a scalable and easy-to-implement confocal imaging system. This system overcomes the limitations of the optical complexities of conventional multi-optical prob...

In this paper, we present a high accuracy laser range finder and velocimeter using ultra-fast time-to-digital converter (TDC). The system operation is based on the measuring the round-trip time of a narrow laser pulse. A low-dark current high-speed PIN photodiode is used to detect the triggered laser beam and to produce start signal. The pulsed laser diode generates 45W optical power at 30ns du...

This paper presents a comparative study of contention-resolution schemes based on wavelength, time, and space domains in an unslotted optical packet-switched network with a large irregular mesh topology consisted of 15 nodes. For the first time, to the best of our knowledge, we investigated the effect of selective deflection and limited wavelength conversion. Features and performances of differ...

Concerted rotations of a self-focused varied line-space diffraction grating about its groove axis and surface normal define a new geometric class of monochromator. Defocusing is canceled, while the scanned wavelength is reinforced at fixed conjugate distances and horizontal deviation angle. This enables high spectral resolution over a wide band, and is of particular advantage at grazing reflect...

Variational problems in vision are solved numerically on the pixel lattice because it provides the simplest computational grid to discretize the input images even though a uniform grid is seldom wellmatched to the complexity of the solution or the resolution power of the model. To address this issue, we introduce multiresolution discretizations that locally adapt the resolution of a piecewise p...

The sharpest optical images of the R136 cluster in Large Magellanic Cloud are presented, allowing for first time to resolve members central core, including R136a1, most massive star known. These data were taken using Gemini speckle imager Zorro medium-band filters with effective wavelengths similar BVRI achieving angular resolutions between 30-40 mas. All stars previously known literature, havi...

Deflection routing and burst segmentation are two techniques for resolving contention in optical burst-switched networks. By selectively applying these techniques to bursts with different QoS requirements, we can offer a range of differentiated services at the optical layer. c 2001 Optical Society of America OCIS codes: (060.4250) Networks

A χ2 analysis is performed to test the resolving power of two-dimensional pion interferometry using for illustration the preliminary E802 data on Si+Au at 14.6 AGeV/c. We find that the resolving power to distinguish two decoupling geometries of different dynamical models is enhanced by studying the variation of the mean χ2 per degrees of freedom with respect to the range of the analysis in the ...