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Miscellaeous features - JLab Tech Notes Home Page
Miscellaeous features - JLab Tech Notes Home Page

Utilization of Birefringent Fiber as Sensor of Temperature Field
Utilization of Birefringent Fiber as Sensor of Temperature Field

Paper
Paper

Devil`s lens optical tweezers
Devil`s lens optical tweezers

Mode Conversion/Splitting by Optical Analogy of Multistate
Mode Conversion/Splitting by Optical Analogy of Multistate

... class of devices is the mode conversion and mode splitting devices. They can be used for mode-division multiplexing in optical interconnects and short-distance communications [1]. For long-distance communications, they can be used to perform key functions such as filtering, power splittering, and mu ...
A Novel Pulse Measurement System by Using Laser Triangulation and a CMOS Image Sensor
A Novel Pulse Measurement System by Using Laser Triangulation and a CMOS Image Sensor

Indexing terms/Keywords
Indexing terms/Keywords

... minimum constraint by the uncertainty principle with equally fluctuations in the position and the momentum [8]. Moreover, these states are Gaussian states because their Wigner functions are Gaussian. Thus, the coherent state may be fully described by determining the mean and the variance of the stat ...
Structure Analysis Technology for Amorphous Materials by
Structure Analysis Technology for Amorphous Materials by

... the average number of atomic pairs that exist at radius between r and r+∆r. Regarding the simulation, molecular dynamics (MD) is often employed to build structure models, using appropriate interatomic potentials. The validity of the simulated models can be inspected by comparing the RDFs calculated ...
Optical, Confocal, and 4Pi Microscopy
Optical, Confocal, and 4Pi Microscopy

Displacement Measuring Interferometry
Displacement Measuring Interferometry

... prism (or other suitable birefringent prism) divides the sampled beam according to the two orthogonal polarizations corresponding to the two lasing modes and directs them on to two detectors D1 and D2.50 The control system strives to minimize the difference in intensity observed at the two detectors ...
optical coherence tomography
optical coherence tomography

... Tomography is based on the reconstruction of cross-sectional images of an object from its projections. While the basic mathematics was described as early as 1917 by J. Radon,1 the implementation of this principle in medical imaging took a rather long time and led to a great number of configurations, ...
Selective Trapping or Rotation of Isotropic Dielectric Microparticles
Selective Trapping or Rotation of Isotropic Dielectric Microparticles

Helicity-dependent three-dimensional optical trapping of chiral
Helicity-dependent three-dimensional optical trapping of chiral

IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

... has enormously spread its wing to serve the great need for bandwidth but still constricted to various Dispersion and non-linearities. Many Optical parameters which are in reciprocal to each other are still a major concern on considering long haul set up. The long distance transmission experiences hi ...
Demonstration of a large-scale optical exceptional point structure Liang Feng, Xuefeng Zhu,
Demonstration of a large-scale optical exceptional point structure Liang Feng, Xuefeng Zhu,

[pdf]
[pdf]

... detection conditions. In the case of single scattering by the ensemble with a great number of particles and ideal detection conditions (when detector aperture is much less than the average size of speckles) we have b 51. For multiple scattering mode with P'0, when correlation properties of copolariz ...
Full text
Full text

Graded-index fibers (GRA)
Graded-index fibers (GRA)

... This chapter describes the wave propagation in graded-index fibers. In particular, the number of propagable waves and the optimal shape of the refractive index profile will be discussed. The single-mode step-index fiber has a high bandwidth (essentially limited only by the waveguide dispersion and m ...
Solid-state laser system for laser cooling of Sodium - ENS-phys
Solid-state laser system for laser cooling of Sodium - ENS-phys

Investigation of positive and negative modes of nanosecond pulsed
Investigation of positive and negative modes of nanosecond pulsed

Luminescence properties of a Fibonacci photonic
Luminescence properties of a Fibonacci photonic



... fluctuates. The fluctuations originate from the energy conversion of solar energy. The solar power heats the atmosphere irregular, different cells in the atmosphere exhibit different temperatures and in the atmosphere appear turbulences. This reflects as variations in the index of refraction of the ...
Tapered Fiber Fabrication
Tapered Fiber Fabrication

On the Limits of Communication over Optical On-Off Keying Channels with Crosstalk
On the Limits of Communication over Optical On-Off Keying Channels with Crosstalk

Noise propagation in wave-front sensing with
Noise propagation in wave-front sensing with

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Optical rogue waves

Optical rogue waves are rare pulses of light analogous to rogue or freak ocean waves. The term optical rogue waves was coined to describe rare pulses of broadband light arising during the process of supercontinuum generation—a noise-sensitive nonlinear process in which extremely broadband radiation is generated from a narrowband input waveform—in nonlinear optical fiber. In this context, optical rogue waves are characterized by an anomalous surplus in energy at particular wavelengths (e.g., those shifted to the red of the input waveform) and/or an unexpected peak power. These anomalous events have been shown to follow heavy-tailed statistics, also known as L-shaped statistics, fat-tailed statistics, or extreme-value statistics. These probability distributions are characterized by long tails: large outliers occur rarely, yet much more frequently than expected from Gaussian statistics and intuition. Such distributions also describe the probabilities of freak ocean waves and various phenomena in both the man-made and natural worlds. Despite their infrequency, rare events wield significant influence in many systems. Aside from the statistical similarities, light waves traveling in optical fibers are known to obey the similar mathematics as water waves traveling in the open ocean (the nonlinear Schrödinger equation), supporting the analogy between oceanic rogue waves and their optical counterparts. More generally, research has exposed a number of different analogies between extreme events in optics and hydrodynamic systems. A key practical difference is that most optical experiments can be done with a table-top apparatus, offer a high degree of experimental control, and allow data to be acquired extremely rapidly. Consequently, optical rogue waves are attractive for experimental and theoretical research and have become a highly studied phenomenon. The particulars of the analogy between extreme waves in optics and hydrodynamics may vary depending on the context, but the existence of rare events and extreme statistics in wave-related phenomena are common ground.
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