Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Discrete-time Fourier transform

Discrete-time Fourier transform

The Discrete-Time Fourier Transform (DTFT) is an essential mathematical tool for analyzing discrete-time signals, converting them from the time domain to the frequency domain. This transformation allows for examining the frequency components of discrete signals, providing insights into their spectral characteristics. In the DTFT, the continuous integral used in the continuous-time Fourier transform is replaced by a summation to accommodate the discrete nature of the signal.
One of the notable...

Discrete Fourier Transform

Discrete Fourier Transform

The Discrete Fourier Transform (DFT) is a fundamental tool in signal processing, extending the discrete-time Fourier transform by evaluating discrete signals at uniformly spaced frequency intervals. This transformation converts a finite sequence of time-domain samples into frequency components, each representing complex sinusoids ordered by frequency. The DFT translates these sequences into the frequency domain, effectively indicating the magnitude and phase of each frequency component present...

Discrete-Time Fourier Series

Discrete-Time Fourier Series

The Discrete-Time Fourier Series (DTFS) is a fundamental concept in signal processing, serving as the discrete-time counterpart to the continuous-time Fourier series. It allows for the representation and analysis of discrete-time periodic signals in terms of their frequency components. Unlike its continuous counterpart, which utilizes integrals, the calculation of DTFS expansion coefficients involves summations due to the discrete nature of the signal.
For a discrete-time periodic signal x[n]...

Continuous -time Fourier Transform

Continuous -time Fourier Transform

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...

Propagation Speed of Electromagnetic Waves

Propagation Speed of Electromagnetic Waves

Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:

You might also read

Related Articles

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

Sort by

Same author

Measurement of the relative prompt production rate of <i>χ</i><sub>c2</sub> and <i>χ</i><sub>c1</sub> in pp collisions at [Formula: see text].

The European physical journal. C, Particles and fields·2015

Same author

Charmonium and <i>e</i><sup>+</sup><i>e</i><sup>-</sup> pair photoproduction at mid-rapidity in ultra-peripheral Pb-Pb collisions at [Formula: see text].

The European physical journal. C, Particles and fields·2015

Same author

Energy dependence of the transverse momentum distributions of charged particles in pp collisions measured by ALICE.

The European physical journal. C, Particles and fields·2015

Same author

Jet and underlying event properties as a function of charged-particle multiplicity in proton-proton collisions at [Formula: see text].

The European physical journal. C, Particles and fields·2015

Same author

Measurement of the sum of WW and WZ production with W+dijet events in pp collisions at [Formula: see text].

The European physical journal. C, Particles and fields·2015

Same author

Search for supersymmetry in pp collisions at [Formula: see text] TeV in events with a single lepton, jets, and missing transverse momentum.

The European physical journal. C, Particles and fields·2015

Search research articles

Related Experiment Video

Updated: May 25, 2026

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Energy-efficient 0.26-Tb/s coherent-optical OFDM transmission using photonic-integrated all-optical discrete Fourier

I Kang¹, X Liu, S Chandrasekhar

¹Bell Laboratories, Alcatel-Lucent, Holmdel, New Jersey 07733, USA. inuk.kang@alcatel-lucent.com

|January 26, 2012

Summary

This study introduces an energy-efficient optical transmission system using hybrid optical-electronic processing. It successfully transmits data over 960 km, compensating for significant fiber dispersion.

More Related Videos

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Related Experiment Videos

Last Updated: May 25, 2026

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

Published on: March 20, 2017

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Area of Science:

Optical Communications
Signal Processing
Fiber Optics

Background:

Coherent optical Orthogonal Frequency Division Multiplexing (OFDM) is crucial for high-capacity fiber optic communication.
Energy efficiency and dispersion compensation are key challenges in long-haul optical networks.

Purpose of the Study:

To propose and demonstrate a novel energy-efficient coherent optical OFDM transmission scheme.
To evaluate the performance of hybrid optical-electronic signal processing for long-haul transmission.

Main Methods:

Utilized a hybrid optical-electronic signal processing approach.
Implemented all-optical Fourier transform processing for the OFDM superchannel.
Employed electronic 7-tap blind digital equalization per subchannel for dispersion compensation.

Main Results:

Successfully transmitted a 0.26-Tb/s OFDM superchannel over 400-km standard single-mode fiber (SSMF).
Achieved a Bit Error Rate (BER) less than 6.3x10(-4).
Demonstrated compensation of chromatic dispersion up to 16,000 ps/nm over 960 km SSMF using only 15 taps per subchannel.

Conclusions:

The proposed hybrid optical-electronic processing scheme offers energy efficiency for high-speed optical OFDM transmission.
Electronic signal processing effectively compensates for substantial chromatic dispersion in long-haul fiber optic systems.
The system shows robustness against inter-carrier interference, enabling reliable long-haul communication.