Aim: To show that a wireless-powered thrombolytic filter can be used in the treatment of venous thromboembolism (VTE) as an alternative to existing VTE therapies, which have serious side effects. Methods: The we propose combines positive attributes anticoagulants and thrombolytics, through capture dissolution blood clots, without associated adverse effects treatments. absorbs radio-frequency energy from source converts it into heat at filter. Results: We computer simulations with COMSOL lab...

Ultrashort pulses with wavelength tuning in the visible and near-infrared (VNIR) ranges (here approximately 680 to 2000 nm) have wide application many biomedical devices especially imaging spectroscopy. The theoretical studies here consider phase-matching conditions of three periodically poled crystals (PPKTP, MgO:PPcLN MgO:PPSLT) use for femtosecond optical parametric oscillators (OPO) generate tunability this range. basic properties are calculated respect different grating periods...

We investigate both experimentally and theoretically a new technique to realistically emulate polarization-mode dispersion (PMD). propose demonstrate PMD emulator using rotatable connectors between sections of polarization-maintaining fibers that generates an ensemble high fiber realizations by randomly rotating the connectors. It is shown that: (1) DGD this Maxwellian-distributed over at any fixed optical frequency; (2) frequency autocorrelation function resembles in real when averaged...

We analyze polarization mode dispersion (PMD) emulators comprised of a small number sections polarization-maintaining fibers with scattering at the beginning each section. Unlike previously studied devices, these allow emulation whole ensemble fibers. derive an analytical expressions and determine two main criteria that characterize quality PMD emulation. The experimental results are in good agreement theoretical predictions.

A detailed theoretical analysis of the optical properties periodically poled crystals lithium niobate for parametric oscillation with excitation at 1 µm is presented. Crystals congruent and without MgO-doping are considered. The choice materials, their basic properties, quasi-phasematching wavelength tuning ranges, as well dispersive effects discussed. These results provide a useful roadmap construction oscillators generators operating in ultrashort pulse regime µm.

A thorough theoretical analysis of the near-infrared properties periodically poled KTiOPO4 (PPKTP) and stoichiometric MgO-doped LiTaO3 (MgO:PPSLT) crystals for optical parametric oscillation with excitation at 1 μm is presented. To best our knowledge, optical, phasematching, wavelength tuning, dispersive these interactions are discussed in detail first time. In addition, a new design high power devices based on PPKTP or MgO:PPSLT ultrafast Yb-ion laser pump proposed. The results form useful...

Frequency doubling of a passively Q-switched microchip laser using BiBO crystals is reported. Generation green second harmonic at 532 nm with pulse energies 2.4–3.4 μJ and conversion efficiency 25–35% demonstrated.

The authors have derived a receiver model that provides an explicit relationship between the Q factor and optical signal-to-noise ratio (OSNR) in fiber communication systems for arbitrary pulse shapes, realistic filters, arbitrarily polarized noise. It is shown how system performance depends on both degree of polarization noise angle Stokes' vectors signal results demonstrate OSNR not unique when partially polarized. This paper defines enhancement three other parameters explicitly quantify...

A volumetric display technology based on two-photon absorption in quantum dots was investigated. We derive and validate a closed form expression for the luminance produced by dispersed at focal point of an infrared pulsed laser beam we demonstrate using theory experiments that voxels can be efficiently with commercially available solid-state lasers off-the-shelf core-shell CdSe-ZnS toluene.

We developed an importance sampling based method that significantly speeds up the calculation of diffusive reflectance due to ballistic and quasi-ballistic components photons scattered in turbid media: Class I reflectance.These make signal optical coherence tomography (OCT) imaging.We show use this reduces computation time time-domain OCT by three orders magnitude when compared with standard Monte Carlo simulation.Our does not produce a systematic bias statistical result is typically...

We investigate the computational cost of nonlinear Fourier transform (NFT) based on Zakharov-Shabat scattering problem as a compensation technique for quadrature-phase-shift keyed (QPSK) signals with raised cosine frequency characteristic in optical fiber transmission systems normal dispersion fibers. show that primary sources errors arise from use NFT is finite eigenvalue resolution left and right reflection spectra. this effect and, consequently, mitigation regime increases exponentially...

A sub-nanosecond pulsed green laser source is demonstrated by using a MgO-doped periodically poled LiNbO3 crystal (MgO:PPLN) pumped Q-switched Nd:YAG microchip laser. The maximum output power of 40 mW at 532 nm obtained from this source, corresponding to conversion efficiency 60%. temperature acceptance the was found be 3°C (full width half maximum) phasematching 32.8°C.

We developed an importance sampling based method that significantly speeds up the calculation of diffusive reflectance due to ballistic and quasi-ballistic components photons scattered in turbid media: Class I reflectance. These make signal optical coherence tomography (OCT) imaging. show use this reduces computation time time-domain OCT by three orders magnitude when compared with standard Monte Carlo simulation. Our does not produce a systematic bias statistical result is typically...

We developed a Monte Carlo-based simulator of optical coherence tomography (OCT) imaging for turbid media with arbitrary spatial distributions. This allows computation both Class I diffusive reflectance due to ballistic and quasiballistic scattered photons II multiple photons. It was implemented using tetrahedron-based mesh importance sampling significantly reduce computational time. Our simulation results were verified by comparing them from two previously validated OCT simulators...

We investigate the polarization evolution for both signal and noise in two 107-km recirculating loops with polarization-dependent loss per round-trip of 0.35 dB less than 0.1 dB, respectively. When system is optimized, first case, are polarized, while second tends to depolarize due noise. experimentally measured theoretically simulated Q factor distribution, which far from what expected straight-line systems, after 5000 km case. also suggest a simple method obtaining same distribution loop...

In this letter, we use importance sampling to analyze polarization-mode dispersion compensators with a constant differential group delay (DGD) element. We optimize the value of fixed DGD element compensator respect outage probability. show that optimum can reduce probability by several orders magnitude, even though it does not provide substantial reduction average penalty due in cases studied. By contrast, choosing maximally may lead an is magnitude larger than optimal choice.

We investigate a new technique to realistically emulate polarization mode dispersion. demonstrate that 15 sections of polarization-maintaining fiber with randomly rotatable connections emulates an almost ideal Maxwellian differential group delay (DGD) distribution, whereas fixed is inadequate.

We show how to efficiently calculate the signal in optical coherence tomography (OCT) systems due ballistic photons, quasi-ballistic and photons that undergo multiple diffusive scattering using Monte Carlo simulations with importance sampling.This method enables calculation of these three components OCT less than one hundredth computational time required by conventional method.Therefore, it can be used as a design tool characterize performance systems, also development novel processing...

A numerical analysis of periodic segmented waveguides (PSWs) using the 2-D finite element method (2D-FEM) in frequency domain is presented. This has significantly lower computational cost when compared with 3-D methods that have been used to model PSWs, and can also back reflected signals. Unlike photonic crystal waveguides, light confinement a PSW due total internal reflection as continuous waveguide (CWG). We show dispersion relation guided modes strongly influenced by dielectric...

This paper shows how to estimate errors in multicanonical Monte Carlo (MMC) simulations using a transition-matrix method. MMC is biasing technique that allows one compute the probability of rare events, such as outage optical-fiber communication systems. Since technique, it subject statistical errors, and essential determine their magnitude. highly nonlinear iterative method, linearized error-propagation techniques standard error analyses do not work, more sophisticated method needed. The...

We present a novel polarization diversity receiver for mitigating polarization-mode dispersion (PMD). show that with simple fixed optics and electronics we can significantly decrease the outage probability due to PMD achieve better performance than an electronic equalization solution using no diversity. By incorporating into structure, further improvements be achieved intersymbol interference higher order distortions reduced. demonstrate advantages of proposed importance sampling accurately...

This paper shows how to use multiple importance sampling study the performance of polarization-mode dispersion (PMD) compensators with a single differential group delay (DGD) element. We compute eye opening penalty margin for compensated and uncompensated systems outage probabilities 10/sup -5/ or less fraction computational cost required by standard Monte Carlo methods. that an optimized compensator fixed DGD element is comparable variable It also optimal value two three times larger than...

We present an integrated dielectrophoretic (DEP) and surface plasmonic technique to quantify ∼1 pM of fluorescent molecules in low conductivity buffers. have established a DEP force on target bring those place them the nanometallic structures (hotspots) for quantification through effects. Our results show that is capable placing hotspots, which are depicted as significant reduction fluorescence lifetime molecules. To efficiently integrate effects, we designed utilized pearl-shaped...

We show that negative dielectrophoresis (DEP) spectroscopy is an effective transduction mechanism of a biosensor for the diagnosis and prognosis pancreatic cancer using biomarker CA 19-9. A substantial change in DEP force applied to functionalized polystyrene microspheres (PM) was observed with respect both concentration level 19-9 frequency electric field produced by pearl shaped interdigitated gold micro-electrode. The velocity repulsion set PM monoclonal antibody calculated several cutoff...

We show that nonlinear transforms based on the Zakharov-Shabat scattering problem are not practical to encode/decode QPSK signals in communication systems with normal dispersion fibers operating average powers above of quasi-linear regime.