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

Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

10.8K
Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
10.8K

You might also read

Related Articles

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

Sort by
Same author

Loss of the USP22 deubiquitylase confers resistance to chemotherapy in small cell lung cancer.

Nature communications·2026
Same author

LATS1/2-CD38 Metabolic Rewiring Links Senescence to Intraplaque Thrombosis.

Circulation research·2026
Same author

Deeptosis: A Deep Learning-Based Platform for Label-Free Discrimination of Apoptosis and Pyroptosis from Brightfield Microscopy.

Journal of molecular biology·2026
Same author

Synergistic Neurotoxicity of environmental Cadmium and Paraquat in Parkinsonism: Unveiling the Mito-ROS/OPA1/Caspase-3/GSDME-driven Apoptosis Axis.

International journal of biological sciences·2026
Same author

A simplified method of sound speed profiles for precise positioning of underwater dynamic targets.

The Journal of the Acoustical Society of America·2026
Same author

The emerging role of aptamers in targeted cancer immunotherapy.

Molecular therapy. Oncology·2026

Related Experiment Video

Updated: Sep 25, 2025

Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

9.5K

A miniature fiber-optic microphone based on plano-concave micro-interferometer.

Chunyang Han1, Hui Ding1, Baojin Li1

  • 1State Key Laboratory of Electrical Insulation and Power Equipment, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

The Review of Scientific Instruments
|April 30, 2022
PubMed
Summary

This study introduces a novel fiber-optic microphone, a miniature diaphragm-free device for sensitive sound wave detection. Its unique design offers competitive performance and a compact size, making it a promising alternative to traditional microphones.

More Related Videos

High-resolution Fiber-optic Microendoscopy for in situ Cellular Imaging
13:49

High-resolution Fiber-optic Microendoscopy for in situ Cellular Imaging

Published on: January 11, 2011

34.7K
Label-free Single Molecule Detection Using Microtoroid Optical Resonators
08:53

Label-free Single Molecule Detection Using Microtoroid Optical Resonators

Published on: December 29, 2015

9.4K

Related Experiment Videos

Last Updated: Sep 25, 2025

Implementation of a Reference Interferometer for Nanodetection
16:11

Implementation of a Reference Interferometer for Nanodetection

Published on: April 26, 2014

9.5K
High-resolution Fiber-optic Microendoscopy for in situ Cellular Imaging
13:49

High-resolution Fiber-optic Microendoscopy for in situ Cellular Imaging

Published on: January 11, 2011

34.7K
Label-free Single Molecule Detection Using Microtoroid Optical Resonators
08:53

Label-free Single Molecule Detection Using Microtoroid Optical Resonators

Published on: December 29, 2015

9.4K

Area of Science:

  • Photonics and Optical Engineering
  • Acoustics and Sensor Technology

Background:

  • Sensitive detection of sound waves is crucial for diverse applications.
  • Conventional microphones often face limitations in size, stability, or sensitivity.

Purpose of the Study:

  • To propose and demonstrate a miniature, diaphragm-free fiber-optic microphone.
  • To leverage optical micro-interferometry for enhanced sound wave detection.

Main Methods:

  • Fabrication of a solid plano-concave micro-interferometer at a fiber optic end using liquefied glass.
  • Utilizing the elasto-optic effect to modulate refractive index with sound pressure.
  • Converting phase difference variations into detectable optical power changes for sound demodulation.

Main Results:

  • The fiber-optic microphone detects sound across the entire audible range with near-omnidirectional sensitivity.
  • Achieved a noise-limited minimum detectable sound pressure of approximately 12 µPa/Hz.
  • Demonstrated competitive performance against advanced commercial microphones in human voice detection tests.

Conclusions:

  • The proposed diaphragm-free fiber-optic microphone offers a stable, compact (0.25 mm), and sensitive solution for sound detection.
  • Its unique design overcomes limitations of conventional microphones, presenting an attractive alternative for various applications.