Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Continuous -time Fourier Transform01:11

Continuous -time Fourier Transform

344
The Fourier series is instrumental in representing periodic functions, offering a powerful method to decompose such functions into a sum of sinusoids. This technique, however, necessitates modification when applied to nonperiodic functions. Consider a pulse-train waveform consisting of a series of rectangular pulses. When these pulses have a finite period, they can be accurately represented by a Fourier series. Yet, as the period approaches infinity, resulting in a single, isolated pulse, the...
344
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

837
A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
837
Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

110
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
110
Sampling Continuous Time Signal01:11

Sampling Continuous Time Signal

275
In signal processing, a continuous-time signal can be sampled using an impulse-train sampling technique, followed by the zero-order hold method. Impulse-train sampling involves the use of a periodic impulse train, which consists of a series of delta functions spaced at regular intervals determined by the sampling period. When a continuous-time signal is multiplied by this impulse train, it generates impulses with amplitudes corresponding to the signal's values at the sampling points.
In the...
275
Generator Voltage Control01:21

Generator Voltage Control

181
Generator voltage control is crucial for maintaining the stable operation of synchronous generators and wind turbines. In older models, a DC generator driven by the rotor delivers DC power to the rotor's field winding, and the power is transferred through slip rings and brushes. In the latest models, static or brushless exciters are used. Static exciters rectify AC power from the generator terminals and then transfer the DC power directly to the rotor. Brushless exciters, on the other hand,...
181
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

3.1K
The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in...
3.1K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Deep learning prediction of noise-driven nonlinear instabilities in fibre optics.

Nature communications·2025
Same author

Spatial coherence measurement and control in multimode fibers.

Optics express·2025
Same author

Principles and metrics of extreme learning machines using a highly nonlinear fiber.

Nanophotonics (Berlin, Germany)·2025
Same author

Limits of nonlinear and dispersive fiber propagation for an optical fiber-based extreme learning machine.

Optics letters·2025
Same author

Relative intensity noise characterization of supercontinuum generation in graded-index and step-index multimode fibers.

Optics letters·2025
Same author

Intracavity coherent supercontinuum generation via high-order soliton dynamics in a dissipative soliton fiber laser.

Optics express·2025
Same journal

Gaussian-modulated continuous-variable quantum key distribution over 60 km fiber using an integrated silicon photonic receiver.

Optics letters·2026
Same journal

E2E-OCT: end-to-end joint learning model using optical coherence tomography images for vocal cord leukoplakia diagnosis.

Optics letters·2026
Same journal

Holographic generation of panoramic 3D scenes by concave ellipsoidal mirror reflection.

Optics letters·2026
Same journal

Dual-pilot phase recovery with pair-wise maximum-ratio combining for coherent PONs.

Optics letters·2026
Same journal

Mapping the whispering gallery modes of a CaF<sub>2</sub> disk resonator with half-tapered fibers to estimate the fundamental mode volume.

Optics letters·2026
Same journal

Quantitative estimation of deep-subwavelength scale via dark-field scattering axial energy concentration decay profiles.

Optics letters·2026
See all related articles

Related Experiment Video

Updated: Jul 17, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.0K

Tailored supercontinuum generation using genetic algorithm optimized Fourier domain pulse shaping.

Mathilde Hary, Lauri Salmela, Piotr Ryczkowski

    Optics Letters
    |September 1, 2023
    PubMed
    Summary
    This summary is machine-generated.

    We demonstrate a new method for precisely controlling supercontinuum generation in highly nonlinear fiber using Fourier-domain pulse shaping and a genetic algorithm. This technique allows for user-selectable spectral enhancement across a wide wavelength range.

    More Related Videos

    Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
    09:23

    Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

    Published on: May 30, 2014

    14.6K
    In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
    09:39

    In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

    Published on: May 27, 2013

    12.4K

    Related Experiment Videos

    Last Updated: Jul 17, 2025

    Generation and Coherent Control of Pulsed Quantum Frequency Combs
    06:42

    Generation and Coherent Control of Pulsed Quantum Frequency Combs

    Published on: June 8, 2018

    9.0K
    Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
    09:23

    Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

    Published on: May 30, 2014

    14.6K
    In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
    09:39

    In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

    Published on: May 27, 2013

    12.4K

    Area of Science:

    • Nonlinear optics
    • Quantum optics
    • Fiber optics

    Background:

    • Supercontinuum generation is crucial for various applications, but precise spectral control remains challenging.
    • Traditional methods often lack the flexibility for user-defined spectral shaping.
    • Femtosecond laser pulse shaping offers potential for tailored optical spectra.

    Purpose of the Study:

    • To develop a method for generating spectrally tailored supercontinua.
    • To demonstrate user-selectable spectral enhancement in the 1550-2000 nm range.
    • To optimize spectral shaping using a genetic algorithm for enhanced control.

    Main Methods:

    • Generation of a spectrally tailored supercontinuum using Fourier-domain pulse shaping.
    • Injection of femtosecond pulses into a highly nonlinear fiber.
    • Control and optimization of spectral shaping via a genetic algorithm.
    • Demonstration of user-selectable spectral channel selection (1-5 nm bandwidth).

    Main Results:

    • Achieved user-selectable spectral enhancement over the 1550-2000 nm wavelength range.
    • Demonstrated spectral enhancement factors of ~5-20 (1550-1800 nm), exceeding 160 around 2000 nm.
    • Successfully enhanced up to four spectral channels simultaneously using the genetic algorithm.

    Conclusions:

    • Fourier-domain pulse shaping combined with a genetic algorithm provides precise control over supercontinuum generation.
    • This method enables flexible and user-defined spectral tailoring for advanced optical applications.
    • The demonstrated technique significantly enhances spectral features in highly nonlinear fibers.