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

Aliasing

Aliasing

Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original...

You might also read

Related Articles

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

Sort by

Same author

Self-mixing in quantum cascade lasers for mid-infrared gas sensing: modeling, simulations, and experiments.

Optics express·2026

Same author

VCSEL-based PAM-4 transmission system emulator: a data-driven deep-learning perspective.

Applied optics·2026

Same author

Per-Span Microwave-Frequency Fiber Interferometry for Amplified Transmission Links Employing High-Loss Loopbacks.

Sensors (Basel, Switzerland)·2026

Same author

Self-mixing detection of methane and carbon dioxide using mid-infrared quantum cascade lasers.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy·2026

Same author

Photonic Kolmogorov-Arnold networks based on self-phase modulation in nonlinear waveguides.

Optics letters·2026

Same author

Low-loss splicing between anti-reflection coated SMF and hollow-core fiber without back-reflection degradation.

Optics letters·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

Search research articles

Related Experiment Video

Updated: Jan 19, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Towards precise one-way fiber-based frequency dissemination using phase-sensitive amplification.

Adonis Bogris, Thomas Nikas, Radan Slavík

|February 1, 2019

Summary

This summary is machine-generated.

A phase-sensitive amplifier can actively detect stochastic phase changes in fiber frequency systems, offering improved sensitivity. This advancement holds potential for enhancing metrology and one-way fiber-based frequency dissemination.

More Related Videos

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

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

Related Experiment Videos

Last Updated: Jan 19, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

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

Area of Science:

Optics
Metrology
Fiber Optics

Background:

Fiber-based frequency dissemination systems are crucial for precise timekeeping and scientific measurements.
Current one-way systems using two-wavelength schemes have limitations in detecting subtle phase changes.
Environmental factors like temperature induce stochastic phase changes, impacting system accuracy.

Purpose of the Study:

To conceptually demonstrate a phase-sensitive amplifier (PSA) as an active detector for stochastic phase changes.
To evaluate the potential sensitivity improvement of PSA-based detection compared to existing methods.
To explore the application of PSAs in improving one-way fiber-based frequency dissemination systems.

Main Methods:

Theoretical analysis of PSA operation for stochastic phase change detection.
Experimental validation of the theoretical predictions.
Optical phase comparison within the PSA to measure phase changes.

Main Results:

The PSA demonstrated potential for two orders of magnitude better sensitivity in detecting stochastic phase changes.
Experimental results closely matched theoretical predictions.
High sensitivity detection of phase changes caused by environmental factors was achieved.

Conclusions:

Phase-sensitive amplifiers show significant potential for enhancing the sensitivity of fiber-based frequency dissemination systems.
PSAs can serve as active detectors for stochastic phase changes, improving metrology applications.
This technology may lead to substantial improvements in one-way fiber-based frequency dissemination.