Controlling the energy of unauthorized light signals in a quantum cryptosystem is an essential criterion for implementation security. Here, we propose passive optical power limiter device based on thermo-optical defocusing effects providing reliable limiting threshold which can be readily adjusted to suit various applications. In addition, robust against wide variety signal variations (e.g. wav...

Optical limiting and thermo-optic properties of C60 in toluene are studied using 532 nm, 9 ns pulses from a frequency-doubled Nd:YAG laser. Optical limiting studies in these fullerene molecules lead to the conclusion that reverse saturable absorption is the major mechanism for limiting properties in these molecules. Thermal lensing measurements are also performed in fullerene solutions. The qua...

The Optoelectronic Technology Consortium (OETC) 16 Gbit/s, 32-channel parallel fiber optic bus introduces new requirements for modeling and simulation of an optical bus which were not present for previous single-channel optical link systems. These requirements include the simulation of the statistical variation in component parameters, timing skew, and crosstalk. Due to the required simulation ...

We present a photometric stereo method for non-rigid objects of unknown and spatially varying materials. The prior art uses timemultiplexed illumination but assumes constant surface normals across several frames, fundamentally limiting the accuracy of the estimated normals. We explicitly account for time-varying surface orientations, and show that for unknown Lambertian materials, five images a...

In this work, we provide a framework analysis of dual-hop hybrid Millimeter Wave Radio Frequency (RF)/Free Space Optical (FSO) MIMO relaying system. The source is equipped with multiple antennas and employs conjugate beamforming while the destination consists apertures selection combining. system also relay operating at amplify-and-forward mode. RF channels are subject to Nakagami-m fading opti...

In our earlier paper [l]f expressions for the spectrum of an FM wave received in the presence of random (fluctuation) noise were obtained in the two extreme cases of no limiting and "super"-limiting.** It is the purpose here to develop the completelygeneral theory for the demodulated wave, taking into account the effects of arbitrary amounts of limiting on the noise and signal spectra and power...