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Fourier Transform
Fourier Transform news and technical articles from Laser Focus World. Search Fourier Transform latest and archived news and articles
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Fast-Fourier -transform scheme allows a single laser to transmit 26 Tbit/s over 50 km
… Karlsruhe, Germany--Scientists at Karlsruhe Institute of Technology (KIT) have developed an optical fast- Fourier - transform (FFT) scheme that allows them to encode data at a rate of 26 Tbit/s on a single laser, transmitting the data …
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Fourier -transform spectrometer has highest vacuum-UV resolving power
… Optique in Orsay. This optical unit is part of a Fourier transform spectrometer dedicated to absorption spectroscopy ..... implemented a high-resolution vacuum-UV (VUV) Fourier - transform (FT) spectrometer based on all-reflective optics …
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FOURIER -TRANSFORM HOLOGRAPHY: X-ray holography gets a boost from an old idea
… Such pinhole illumination schemes have been used in Fourier - transform holography in the visible, and multiple separate ..... scattered image was deconvolved much as a standard Fourier - transform holographic image—by simple Fourier transformation …
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FOURIER -TRANSFORM SPECTROSCOPY: Interferometer simplifies FTIR spectrometer
… modification that turns it into a scanner-free Fourier - transform IR (FTIR) spectrometer. 1 One previous design ..... zero point of the plot (see Fig. 1). Taking the Fourier transform of this symmetrized interferogram reproduces the …
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Algorithm is faster than FFT for all sparse signals
Being able to compute the Fourier transform of an input signal is crucial in photonics ..... standard method of computing a discrete Fourier transform (DFT) is by using the fast Fourier transform ( FFT ) algorithm. However, algorithms …
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Compact FT-IR spectrometers address real-world problems
… has led to increased use of Fourier - transform infrared spectrometers for ..... Dixon, Contributing Editor The Fourier - transform infrared (FT-IR) spectrometer ..... function that is related to the Fourier transform of the input spectrum. In …
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U.S. Patents Awarded to Inventors in California (May 11)
… loop. The reference symbol (RS) set may be generated in an RS extraction module or circuit, from at least a fast Fourier transform of the received OFDM signal. The receiver timing may be coarsely adjusted and then finely adjusted. The coarse …
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Cornell researchers invent alternate approach to Lytro’s “light-field” camera technology
… angle, produce an image containing both angular and spatial information. This information can be analyzed via a Fourier transform , extracting the depth of objects in an image as well as allowing for computational refocusing. So far, with the …
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Scientists study the catalytic reactions used by plants to split oxygen from water
… a hydrogen bonding water network in that portion of the photosynthetic machinery known as photosystem II. Using Fourier transform infrared spectroscopy (FT-IR) on photosystem II extracted from ordinary spinach, researchers at the Georgia …
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SOFTWARE & COMPUTING: Interferometric synthetic aperture microscopy eliminates OCT compromises
… key numerical tool, the fast Fourier transform (FFT)—had been long established ..... a particular element of the Fourier transform of the sample susceptibility ..... equation Here denotes the 2D Fourier transform of the data with respect to …
