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Showing papers in "Optics Communications in 2008"


Journal ArticleDOI
TL;DR: In this paper, the authors present three algorithms for constructing a wavefront that focuses through a scattering medium, and analyze the dynamic behavior of these algorithms and compare their sensitivity to measurement noise.

429 citations


Journal ArticleDOI
TL;DR: In this article, the authors describe the theory of a new method of optical refocusing that is particularly relevant for confocal and multiphoton microscopy systems and show that aberration-free refocusing can be achieved over an axial scan range of 70μm for a 1.4-NA objective lens.

223 citations


Journal ArticleDOI
TL;DR: In this article, the feasibility of applying time-domain, terahertz spectroscopic imaging to the evaluation of underdrawings and paint layers embedded within wall paintings is demonstrated.

193 citations


Journal ArticleDOI
TL;DR: In this paper, a theoretical model for surface plasmon resonance (SPR) based tapered fiber optic sensor is proposed with three different taper profiles, namely, linear, parabolic, and exponential-linear.

165 citations


Journal ArticleDOI
TL;DR: A heuristic treatment which relates SHG image intensities, signal directionality, and observed morphology to the physical structure of collagen and cellulose fibrillar tissues is presented and it is shown that the observed directionality and decreased relative intensity in the diseased state is consistent with phase matching conditions arising from the decreased fibril size and more random assembly.

155 citations


Journal ArticleDOI
TL;DR: In this article, a two-dimensional photonic crystal wavelength division demultiplexer based on ring resonators was proposed for photonic integrated circuits, which achieved 82% output efficiency.

150 citations


Journal ArticleDOI
TL;DR: In this paper, a distributed fiber-optic vibration sensing system is proposed and demonstrated by employing a ring Mach-Zehnder interferometer (MZI) structure as the sensing section, both position and frequency can be determined by combining two phase signals from the ring configuration.

137 citations


Journal ArticleDOI
TL;DR: In this paper, a spatially variable retardation (SVR) plate was used to transform a linearly-polarized Gaussian beam to a radially or an azimuthally polarized doughnut (0, 1) ∗ Laguerre Gaussian (LG) beam.

136 citations


Journal ArticleDOI
TL;DR: The behavior of the scintillation index of a wide-sense statistically stationary, quasi-monochromatic, electromagnetic beam propagating in a homogeneous isotropic medium is studied in this paper.

132 citations


Journal ArticleDOI
TL;DR: Label-free imaging of significant components of arterial tissues suggests the potential application of multimodal nonlinear optical microscopy to monitor onset and progression of arterIAL diseases.

128 citations


Journal ArticleDOI
TL;DR: In this article, the authors used etched fiber Bragg grating (FBG) to determine the thermo-optic coefficients of hydrocarbon samples, where the effective refractive index (RI) of the fundamental mode becomes dependent on the surrounding this article.

Journal ArticleDOI
TL;DR: In this article, the emission spectra of Eu3+ doped TeO2-PbO-GeO2 glasses containing gold nanoparticles (NPs) were investigated.

Journal ArticleDOI
TL;DR: It is concluded that line-scanning SSTF is similar to the temporally-decorrelated multifocal multiphoton imaging technique and this trade-off between spatial and temporal focusing can provide significant advantages in applications such as high-speed imaging and remote axial scanning in an endoscopic fiber probe.

Journal ArticleDOI
TL;DR: In this protocol, random phase shift operations instead of some special discrete unitary operations used usually are employed to realize the sharing controls, and the security of secret sharing is enhanced due to the complete randomicity of the phase shift characterizing the unitary Operations.

Journal ArticleDOI
TL;DR: A scheme of multiparty quantum secret sharing of classical messages (QSSCM) is proposed based on single photons and local unitary operations, where only the sender and one of the agents are required to store photons.

Journal ArticleDOI
TL;DR: In this paper, the authors report on the generation of noise-like pulses with up to 120 nm bandwidth in a passively mode-locked erbium-doped fiber ring laser.

Journal ArticleDOI
TL;DR: In this paper, tri-doped CaF 2 phosphors were synthesized using a hydrothermal method using X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and up-conversion (UC) emission spectra.

Journal ArticleDOI
TL;DR: In this article, a photonic crystal fiber (PCF) with a low confinement loss and nearly zero ultra-flatted chromatic dispersion was presented for a wide telecommunication window.

Journal ArticleDOI
TL;DR: In this article, a comprehensive analysis of coherence properties of the radiation from X-ray free electron laser (XFEL) is presented, where the authors consider practically important case when XFEL is optimized for maximum gain.

Journal ArticleDOI
TL;DR: In this article, an experimental setup useful for complex amplitude evaluation and phase image quantification of three-dimensional (3-D) samples in digital holographic microscopy (DHM) is presented.

Journal ArticleDOI
TL;DR: In this paper, Li + and Er 3+ codoped Y 2 O 3 nanocrystals were investigated in infrared-to-visible upconversion luminescence spectra.

Journal ArticleDOI
A. Ya. Bekshaev1, A.I. Karamoch1
TL;DR: In this article, the authors studied the behavior of beam diffraction by a thin hologram containing the pattern of interference between a regular wave with smooth wavefront and an optical-vortex beam (fork) grating.

Journal ArticleDOI
TL;DR: In this paper, the authors used the multiphoton intrapulse interference phase scan (MIIPS) method on pulses with a bandwidth greater than 100nm full width at half maximum.

Journal ArticleDOI
TL;DR: In this article, a near single-cycle THz pulses from lithium niobate with 3.3μJ energy, 3.5mW average power, 1.2μJ central frequency and 4MW peak power was demonstrated by tilting the intensity front of the pump pulses from a 1 kHz Ti:sapphire laser.

Journal ArticleDOI
TL;DR: In this article, a new method based on a windowed Fourier transform applied in the wavelength domain was proposed for processing the spectral interference signals by using a cube beamsplitter made of BK7 glass.

Journal ArticleDOI
TL;DR: The upconversion luminescence spectral intensity of Er 3+ and Yb 3+ codoped ZnO nanocrystals with and without Li + was investigated in this paper.

Journal ArticleDOI
TL;DR: In this paper, a two-dimensional photonic crystal (PC) with liquid crystal 5CB was used for on-off switching of the electromagnetic waves in the sub-terahertz range.

Journal ArticleDOI
TL;DR: A novel double-image encryption algorithm is proposed, which can simultaneously encrypt two images into a single one as the amplitude of gyrator transform with two different groups of angles.

Journal ArticleDOI
TL;DR: A remote state preparation scheme of a three-particle Greenberger–Horne–Zeilinger (GHZ) class state is proposed by using three 2-qubit maximally entangled states as the quantum channel and the success probability and classical communication cost are calculated.

Journal ArticleDOI
TL;DR: In this article, single crystals of organic nonlinear optical (NLO) materials l -Histidine nitrate (C 6 H 10 N 3 O 2 ) + ǫ(NO 3 ) − and l -Cysteine tartrate monohydrate (C 3 H 8 NO 2 S) were grown by submerged seed solution method.