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

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

84
Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over short...
84
NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

889
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.
889
Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

3.8K
Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
3.8K
Pipe Flowrate Measurement01:28

Pipe Flowrate Measurement

783
In pipe flow measurement, orifice, nozzle, and Venturi meters are commonly used to determine fluid flowrates by constricting the flow area, which increases fluid velocity and reduces pressure. This pressure difference, governed by Bernoulli's principle and adjusted for real-world conditions, is essential for calculating flowrate. Each meter type is suited to specific applications based on accuracy, efficiency, and compatibility with various flow conditions.
The orifice meter is a simple,...
783
IR Frequency Region: Fingerprint Region01:03

IR Frequency Region: Fingerprint Region

1.0K
IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the...
1.0K
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

515
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
515

You might also read

Related Articles

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

Sort by
Same author

Microwave fractional Hilbert transformer implemented in a dispersion-tailored few-mode fiber.

Optics express·2024
Same author

Experimental demonstration of dispersion-diversity multicore fiber optical beamforming.

Optics express·2022
Same author

Dispersion-Diversity Multicore Fiber Signal Processing.

ACS photonics·2022
Same author

On-chip optical true time delay lines based on subwavelength grating waveguides.

Optics letters·2021
Same author

Dispersion-tailored few-mode fiber design for tunable microwave photonic signal processing.

Optics express·2020
Same author

Changes of organochlorine compound concentrations in maternal serum during pregnancy and comparison to serum cord blood composition.

Environmental research·2019

Related Experiment Video

Updated: Aug 25, 2025

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
08:23

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

6.4K

Heterogeneous multicore fiber-based microwave frequency measurement.

Elham Nazemosadat, Sergi García, Ivana Gasulla

    Optics Express
    |October 14, 2022
    PubMed
    Summary

    This study demonstrates a new microwave frequency measurement method using heterogeneous multicore fiber (MCF). This technique leverages MCF core properties to achieve accurate frequency estimation over a wide range.

    Area of Science:

    • Optical Fiber Communications
    • Microwave Engineering
    • Metrology

    Background:

    • Accurate microwave frequency measurement is crucial for various applications.
    • Existing methods may face limitations in range, accuracy, or compactness.
    • Multicore fibers offer novel possibilities for integrated optical signal processing.

    Purpose of the Study:

    • To propose and experimentally demonstrate a novel microwave frequency measurement scheme.
    • To utilize the unique properties of heterogeneous multicore fibers for frequency sensing.
    • To achieve high accuracy and a broad measurement range for microwave frequencies.

    Main Methods:

    • Employing a heterogeneous 7-core multicore fiber (MCF).
    • Realizing two distinct 2-tap microwave filters with different free spectral ranges (FSRs) using MCF core delays.

    More Related Videos

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
    12:19

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

    Published on: April 4, 2017

    8.5K
    Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
    10:35

    Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

    Published on: September 26, 2014

    12.4K

    Related Experiment Videos

    Last Updated: Aug 25, 2025

    A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
    08:23

    A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

    Published on: September 30, 2019

    6.4K
    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
    12:19

    Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source

    Published on: April 4, 2017

    8.5K
    Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
    10:35

    Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

    Published on: September 26, 2014

    12.4K
  • Establishing an amplitude comparison function (ACF) from the ratio of filter frequency responses.
  • Tuning FSRs by varying operational wavelength to obtain complementary ACF data.

    • Main Results:

    • Experimental demonstration of the proposed microwave frequency measurement scheme.
    • Achieved a measurement error of ±71 MHz over a broad frequency range of 0.5-40 GHz.
    • Validated the effectiveness of using complementary ACF curves for improved accuracy.

    Conclusions:

    • The proposed scheme offers a flexible and compact solution for microwave frequency measurement.
    • Heterogeneous MCFs provide inherent parallelism for advanced optical signal processing.
    • The method demonstrates potential for enhanced accuracy in frequency metrology.