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O A
O A

ppt 3.7MB - Weizmann Institute of Science
ppt 3.7MB - Weizmann Institute of Science

... • Vary the delay time between ...
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)
IOSR Journal of Electronics and Communication Engineering (IOSR-JECE)

Persistent spectral hole burning in an organic material for temporal
Persistent spectral hole burning in an organic material for temporal

... Since Mossberg’s seminal work in 1982, it has been known that the photon-echo process opens a specific way to optical data storage and processing. Optical storage of data trains was demonstrated in various materials,2–5 and a rare-earth ion-doped crystal seems to be a good candidate for the practica ...
Presentation PPT
Presentation PPT

... We use a new technique based on air holes with different sizes. This technique describes the relationship between the distances between neighboring cores and air hole size. By optimization of selecting air hole diameter which corresponds to the distance between the cores we can neglect the other cou ...
Welcome to BME 495: Advanced Physical and Applied Optics
Welcome to BME 495: Advanced Physical and Applied Optics

How optics has changed data communications
How optics has changed data communications

Highly parallel CMOS lock-in optical sensor array for hyperspectral
Highly parallel CMOS lock-in optical sensor array for hyperspectral

Manne Siegbahn - Nobel Lecture
Manne Siegbahn - Nobel Lecture

... the crystal. That is to say, we suggested that the experiment must be considered as depending upon an anomalous dispersion. The analogous phenomenon which has long been known in ordinary optics, where it has been the subject of careful study, has proved to be of fundamental importance for an underst ...
Modeling of nano-photonics
Modeling of nano-photonics

Optical Sources and Detectors
Optical Sources and Detectors

E. Ippen
E. Ippen

Approximate Theory of Rectangular Optical Waveguides
Approximate Theory of Rectangular Optical Waveguides

... LED (right) are very different. The latter has a strongly-modified emission pattern due to the scattering of waveguided modes out of the LED chip. ...
Valer Tosa
Valer Tosa

+ (Z 2 +Z 1 )
+ (Z 2 +Z 1 )

Theory of optical pulse propagation, dispersive and nonlinear effects
Theory of optical pulse propagation, dispersive and nonlinear effects

Get PDF - OSA Publishing
Get PDF - OSA Publishing

... bottom (top) gap edge, gap solitons of the repulsive (attractive) BEC are well approximated by a sech-like envelope of the corresponding Bloch wave, centered either on- or off-site. Near the opposite edge of the gap, i.e. approaching the spectral band, the solitons develop extended ”tails” with the ...
Investigation of External Electromagnetic Disturbance in
Investigation of External Electromagnetic Disturbance in

... filter output is connected to polarizer. That simulates polarization dependent losses at the receiver part. After polarizer optical signal is converted to electrical signal using photodiode (PIN) whose sensitivity is −15 dBm. To evaluate the data transmission performance eye diagram measurements of ...
OptiSystem - cloudfront.net
OptiSystem - cloudfront.net

9.Wave Properties
9.Wave Properties

... They are widely used in communication, medicine, lighting and as sensors. The first transatlantic telephone cable to use optical fibres went into operation in 1988. Optical fibres can transmit light signals at high speed over long distances and are used in phone and internet connections. 10 of 28 ...
FarahWaheedaAhmadWahiddinMFKE2007TTTCHAP1
FarahWaheedaAhmadWahiddinMFKE2007TTTCHAP1

Get
Get

Originally published as “Ultrafast spin polarization in a multiferroic
Originally published as “Ultrafast spin polarization in a multiferroic

... quenching in 3d electron materials, we take another spin relaxation process into account. A characteristic R is Raman coherence time, which describes a transition in a degenerate state with symmetry |  to |  changing the magnetic quantum number and the magnetic polarization. As shown in Fig. 2 ...
CS - Classes
CS - Classes

Development of a67kHz Internal OPO Laser for Hellborne LIdar
Development of a67kHz Internal OPO Laser for Hellborne LIdar

< 1 ... 71 72 73 74 75 76 77 78 79 ... 93 >

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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