Birefringence in Optical Fibers: Applications
... circular-core fiber, these two modes will propagate with the same phase velocity; however, practical fibers are not perfectly circularly symmetric. As a result, the two modes propagate with slightly different phase and group velocities. Furthermore, environmental factors such as bend, twist, and ani ...
... circular-core fiber, these two modes will propagate with the same phase velocity; however, practical fibers are not perfectly circularly symmetric. As a result, the two modes propagate with slightly different phase and group velocities. Furthermore, environmental factors such as bend, twist, and ani ...
Dispersion Trimming in a Reconfigurable Wavelength Selective Switch
... onto the ROADM itself, to slow down the fast growth in inventory requirements for reconfigurable optical networks. Recently, a promising tunable dispersion compensator was demonstrated with a potential capability for wavelength division multiplexing (WDM) [5]. It is based on virtually imaged phased ...
... onto the ROADM itself, to slow down the fast growth in inventory requirements for reconfigurable optical networks. Recently, a promising tunable dispersion compensator was demonstrated with a potential capability for wavelength division multiplexing (WDM) [5]. It is based on virtually imaged phased ...
"A MAP equalizer for the optical communications channel"
... density function (pdf ) approach and uses it in a MAP equalizer for mitigating the effects of PMD distortion in the presence of ASE noise. We derive an expression for the pdf of the received electrical current in the central bit of given transmitted bit patterns and show how these pdfs can be used t ...
... density function (pdf ) approach and uses it in a MAP equalizer for mitigating the effects of PMD distortion in the presence of ASE noise. We derive an expression for the pdf of the received electrical current in the central bit of given transmitted bit patterns and show how these pdfs can be used t ...
Photon number resolution using a time-multiplexed single
... are needed for a linear optics approach to quantum computing [1, 2], for example, and they may have other applications as well [3], such as conditional state preparation [4, 5]. Here we describe a simple time-multiplexing technique that allows ordinary single-photon detectors to be used as photon nu ...
... are needed for a linear optics approach to quantum computing [1, 2], for example, and they may have other applications as well [3], such as conditional state preparation [4, 5]. Here we describe a simple time-multiplexing technique that allows ordinary single-photon detectors to be used as photon nu ...
![[pdf]](http://s1.studyres.com/store/data/008852300_1-d148ed6e0d5b01d695ad45eecc203c0e-300x300.png)
Partially coherent image formation with x
... an x-ray CCD camera. Because zone plates are diffraction optics, they have a strong chromatic error, and the image quality depends on the monochromaticity of the image-forming light. To provide the required monochromaticity, a pinhole is put in close proximity to the sample plane. This pinhole toget ...
... an x-ray CCD camera. Because zone plates are diffraction optics, they have a strong chromatic error, and the image quality depends on the monochromaticity of the image-forming light. To provide the required monochromaticity, a pinhole is put in close proximity to the sample plane. This pinhole toget ...
978-1-4577-0274-7/11/$26.00 ©2011 IEEE DSP2011
... The numerical results are summarized in Table 1, where it may be observed that the method proposed in this paper provides better accuracy with regard to the other methods. More specifically, our algorithm largely outperforms both the joint Lucas-Kanade method (JLK) and the selective smoothing schem ...
... The numerical results are summarized in Table 1, where it may be observed that the method proposed in this paper provides better accuracy with regard to the other methods. More specifically, our algorithm largely outperforms both the joint Lucas-Kanade method (JLK) and the selective smoothing schem ...
Excitation of a one-dimensional evanescent wave by conical edge
... The method separates the homogeneous areas (semi-infinite substrate and superstrate) from the modulated area (Au grating) where the fields are written in a Fourier expansion. The field in the superstrate (air) and the substrate (glass) can be expressed as a sum of plane waves (Rayleigh formalism). T ...
... The method separates the homogeneous areas (semi-infinite substrate and superstrate) from the modulated area (Au grating) where the fields are written in a Fourier expansion. The field in the superstrate (air) and the substrate (glass) can be expressed as a sum of plane waves (Rayleigh formalism). T ...
GPS General Particle Source
... // rough top-layer paint groundbackpainted // rough (back) paint/foil ...
... // rough top-layer paint groundbackpainted // rough (back) paint/foil ...
Optimal wavelength for ultrahigh-resolution optical
... Superluminescent diodes (SLD) are often used for OCT imaging and typically have 10-15 µm longitudinal resolution [2] due to limited optical bandwidth. A Kerr-lens mode-locked Ti:sapphire laser, optimized for a short coherence length, can obtain longitudinal resolution of less than 2 µm [3]. Recent d ...
... Superluminescent diodes (SLD) are often used for OCT imaging and typically have 10-15 µm longitudinal resolution [2] due to limited optical bandwidth. A Kerr-lens mode-locked Ti:sapphire laser, optimized for a short coherence length, can obtain longitudinal resolution of less than 2 µm [3]. Recent d ...
Entangled states of light in classical polarization theory
... treatment of light as a beam. This implies a given direction of propagation, and thus a specific transverse plane. But development of highly non-paraxial fields, use of very narrow-aperture imaging systems, recognition of associated propagation questions, and probing of fully threedimensional fields ...
... treatment of light as a beam. This implies a given direction of propagation, and thus a specific transverse plane. But development of highly non-paraxial fields, use of very narrow-aperture imaging systems, recognition of associated propagation questions, and probing of fully threedimensional fields ...
Measured limits to contamination of optical
... Fluorel that significantly decreased its outgassing. After being cured, it was postcured by being baked in air at a temperature that is ramped from 80 to 230 °C over a period of 46 h. The slow ramp was necessary to avoid cracking the Fluorel piece. It was then baked at 230 °C for 14 h. After cooling ...
... Fluorel that significantly decreased its outgassing. After being cured, it was postcured by being baked in air at a temperature that is ramped from 80 to 230 °C over a period of 46 h. The slow ramp was necessary to avoid cracking the Fluorel piece. It was then baked at 230 °C for 14 h. After cooling ...
- Europhysics News
... in which the integration extends over the two-dimensional surface of the screen with coordinates ~ = (X, Y,L) where L is the distance from the source (pinhole) to the center of the screen (CCD chip); andf(~) is the contrast image (hologram) on the screen obtained by subtracting the images with and w ...
... in which the integration extends over the two-dimensional surface of the screen with coordinates ~ = (X, Y,L) where L is the distance from the source (pinhole) to the center of the screen (CCD chip); andf(~) is the contrast image (hologram) on the screen obtained by subtracting the images with and w ...
Application note: Stripping cleaving and coupling to
... lenses used at the input are IR-coated aspheric lenses (NewFocus lens kit no. 5720C) having a nearly diffraction limited performance, which is important to match the small core size of the PCF. A combination of a x16 (f=11.0 mm, NA=0.25) objective for the collimation and a x40 (f=4.5 mm, NA=0.55) ob ...
... lenses used at the input are IR-coated aspheric lenses (NewFocus lens kit no. 5720C) having a nearly diffraction limited performance, which is important to match the small core size of the PCF. A combination of a x16 (f=11.0 mm, NA=0.25) objective for the collimation and a x40 (f=4.5 mm, NA=0.55) ob ...
chenjiqualv04 - Physics at UC Merced
... system is much easier to align under these conditions. Oscillation is considerably more challenging to obtain for operation even slightly into the region of normal GVD. The cavity lifetime is also an interesting consideration. The systems described previously have relatively lossless cavity mirrors ...
... system is much easier to align under these conditions. Oscillation is considerably more challenging to obtain for operation even slightly into the region of normal GVD. The cavity lifetime is also an interesting consideration. The systems described previously have relatively lossless cavity mirrors ...
Introduction to Acousto Optics
... time to scan between wavelengths. The newer grating spectrometers using a fixed grating and detector array are much faster and better suited to the industrial environment, needing less maintenance and/or recalibration. However, the selected wavelength is still a function of a precise geometrical arr ...
... time to scan between wavelengths. The newer grating spectrometers using a fixed grating and detector array are much faster and better suited to the industrial environment, needing less maintenance and/or recalibration. However, the selected wavelength is still a function of a precise geometrical arr ...
PT symmetry in optics
... better beam quality. Obtaining single mode operation depends on sufficient gain and loss modulations, but factors such as inhomogeneous gain saturation can impede such modulation. A general design concept with flexible design of cavity modes is desired. Feng et al. [10] used the PT symmetry breaking ...
... better beam quality. Obtaining single mode operation depends on sufficient gain and loss modulations, but factors such as inhomogeneous gain saturation can impede such modulation. A general design concept with flexible design of cavity modes is desired. Feng et al. [10] used the PT symmetry breaking ...
New approach to pulse propagation in nonlinear
... length and τ t − z∕vg ∕T 0 is the time normalized to input pulse width p T 0 . If we write the input field in the form A0; τ I 0 f p τ, where f p τ governs the pulse shape, we can introduce N 2 β0 n2 I 0 LD , where N governs the soliton order [3]. In the following numerical simula ...
... length and τ t − z∕vg ∕T 0 is the time normalized to input pulse width p T 0 . If we write the input field in the form A0; τ I 0 f p τ, where f p τ governs the pulse shape, we can introduce N 2 β0 n2 I 0 LD , where N governs the soliton order [3]. In the following numerical simula ...
Optical and evaporative cooling of cesium atoms in the gravito
... The experimental constituents of the GOST are the evanescent-wave diode laser, a titanium:sapphire laser to create the hollow beam and an additional diode laser to provide the light for the repumping beam. For EW and repumping beam we use laser diodes (SDL-5712-H1, distributed Bragg reflector), whic ...
... The experimental constituents of the GOST are the evanescent-wave diode laser, a titanium:sapphire laser to create the hollow beam and an additional diode laser to provide the light for the repumping beam. For EW and repumping beam we use laser diodes (SDL-5712-H1, distributed Bragg reflector), whic ...
image
... number (ε «1 rad). The range of validity of this approximation typically extends up to ~10-30 degrees, depending on the desired degree of accuracy. This regime is also known as “Gaussian optics” or “paraxial optics.” Note the assumption of existence of an optical axis (i.e., perfect ...
... number (ε «1 rad). The range of validity of this approximation typically extends up to ~10-30 degrees, depending on the desired degree of accuracy. This regime is also known as “Gaussian optics” or “paraxial optics.” Note the assumption of existence of an optical axis (i.e., perfect ...
Optical Gain Experiment Manual
... The Variable stripe length Method which has been demonstrated by Shaklee and Leheny in 1971 is a direct measurement of the optical gain. A sample from the active material is pumped by a homogeneous line of a laser beam emitted from high power pulsed laser. The emitted light from the edge of the samp ...
... The Variable stripe length Method which has been demonstrated by Shaklee and Leheny in 1971 is a direct measurement of the optical gain. A sample from the active material is pumped by a homogeneous line of a laser beam emitted from high power pulsed laser. The emitted light from the edge of the samp ...