(full text)
... single photon detectors (SNSPDs) makes them attractive candidates to replace other single photon detectors, including avalanche photodiodes [1], in applications such as free-space optical communications [2], quantum cryptography networks [3, 4], and quantum computation [5]. To fully take advantage o ...
... single photon detectors (SNSPDs) makes them attractive candidates to replace other single photon detectors, including avalanche photodiodes [1], in applications such as free-space optical communications [2], quantum cryptography networks [3, 4], and quantum computation [5]. To fully take advantage o ...
Design of Refractive Index Profile for Multimode Optical Fibers with
... multimode fiber [2,4], and optical signal propagates over multimode fiber link in a so-called few-mode regime. DMD produces the jitter that dramatically grows up under fiber length increase. It appears as output pulse splitting, and distortion pattern depends on parameters of particular laser-source ...
... multimode fiber [2,4], and optical signal propagates over multimode fiber link in a so-called few-mode regime. DMD produces the jitter that dramatically grows up under fiber length increase. It appears as output pulse splitting, and distortion pattern depends on parameters of particular laser-source ...
Retrieving microphysical properties of dust
... 2011). Such methods are, however, computationally demanding and become quite impractical once the particle diameter exceeds the wavelength considerably. Additionally, volumeintegral methods generally require the shape of the particles to be known accurately, which is not usually the case. Therefore, ...
... 2011). Such methods are, however, computationally demanding and become quite impractical once the particle diameter exceeds the wavelength considerably. Additionally, volumeintegral methods generally require the shape of the particles to be known accurately, which is not usually the case. Therefore, ...
Phase contrast and DIC - Nikon Imaging Center at UCSF
... of phase are all-important. Why then had phases never been considered before … in the microscope?” • Phases difficult to see – Must convert phase differences to intensity differences Frits Zernike ...
... of phase are all-important. Why then had phases never been considered before … in the microscope?” • Phases difficult to see – Must convert phase differences to intensity differences Frits Zernike ...
Optical metamaterials at near and mid-IR range fabricated by nanoimprint lithography
... and permeability in periodic metallic metamaterials of interspersed metallic meshes producing ε < 0 [4] and split-ring resonators (SRR) that have magnetic resonance and provide µ < 0 [5]. Interest in NIM became very intense after first speculation by J. Pendry that even metamaterials with only negat ...
... and permeability in periodic metallic metamaterials of interspersed metallic meshes producing ε < 0 [4] and split-ring resonators (SRR) that have magnetic resonance and provide µ < 0 [5]. Interest in NIM became very intense after first speculation by J. Pendry that even metamaterials with only negat ...
Optimization of Bragg Grating in Optical Fiber Using - lea
... to treat theses problems [5],[10]. In this paper, it is presented a new heuristic applied to genetic algorithm that consists on appropriate reformulation of the fitness function, which presented faster results with more quality. Optical filter project based on FBG is used for testing to show the gen ...
... to treat theses problems [5],[10]. In this paper, it is presented a new heuristic applied to genetic algorithm that consists on appropriate reformulation of the fitness function, which presented faster results with more quality. Optical filter project based on FBG is used for testing to show the gen ...
6.0 Mb - Todd Satogata
... § Your brain thinks the light is going straight when it’s really reflecting, so you “see” an image of an object as though the light traveled in a straight line the entire time. § Two mirrors at a 90 degree angle always reflect light back out parallel to the original incoming rays • You can do s ...
... § Your brain thinks the light is going straight when it’s really reflecting, so you “see” an image of an object as though the light traveled in a straight line the entire time. § Two mirrors at a 90 degree angle always reflect light back out parallel to the original incoming rays • You can do s ...
Cloaking at Optical Frequencies - Cornell ECE
... The cloaking device is composed of a spatially varying density of sub-wavelength 50 nm diameter silicon posts embedded in an SiO2 medium, and the reflective surface consists of a distributed Bragg reflector (DBR). The distribution of posts induces a variation of the effective index of refraction ac ...
... The cloaking device is composed of a spatially varying density of sub-wavelength 50 nm diameter silicon posts embedded in an SiO2 medium, and the reflective surface consists of a distributed Bragg reflector (DBR). The distribution of posts induces a variation of the effective index of refraction ac ...
optical fiber communication
... The minimum angle of incidence at which a light ray ay strike the interface of two media and result in an angle of refraction of 90° or ...
... The minimum angle of incidence at which a light ray ay strike the interface of two media and result in an angle of refraction of 90° or ...
Chapter 2
... BGs are widely used in WDM BGs: any periodic perturbation in the propagating medium. (periodic variation of n) (Fiber BGs are written by UV) BGs can also be formed by acoustic waves. ...
... BGs are widely used in WDM BGs: any periodic perturbation in the propagating medium. (periodic variation of n) (Fiber BGs are written by UV) BGs can also be formed by acoustic waves. ...
Dispersion staining
The optical properties of all liquid and solid materials change as a function of the wavelength of light used to measure them. This change as a function of wavelength is called the dispersion of the optical properties. The graph created by plotting the optical property of interest by the wavelength at which it is measured is called a dispersion curve.The dispersion staining is an analytical technique used in light microscopy that takes advantage of the differences in the dispersion curve of the refractive index of an unknown material relative to a standard material with a known dispersion curve to identify or characterize that unknown material. These differences become manifest as a color when the two dispersion curves intersect for some visible wavelength. This is an optical staining technique and requires no stains or dyes to produce the color. Its primary use today is in the conformation of the presence of asbestos in construction materials but it has many other applications.