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

You might also read

Related Articles

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

Sort by

Same author

Outpatient coordination reform improves the sustainability of China's Urban Employee Basic Medical Insurance Fund.

Frontiers in public health·2024

Same author

Evaluation and correction methods for geometric errors of hydrostatic thrust bearings.

Scientific reports·2024

Same author

Predicting immunotherapy-related adverse events in late-stage non-small cell lung cancer with KARS G12C mutation treated with PD-1 inhibitors through combined assessment of LCP1 and ADPGK expression levels.

American journal of cancer research·2024

Same author

Enhancing genomic association studies in slash pine through close-range UAV-based morphological phenotyping.

Forestry research·2024

Same author

Engineering organoids-on-chips for drug testing and evaluation.

Metabolism: clinical and experimental·2024

Same author

Co-encapsulation of probiotic Lactiplantibacillus plantarum and polyphenol within novel polyvinyl alcohol/fucoidan electrospun nanofibers with improved viability and antioxidation.

International journal of biological macromolecules·2024

Same journal

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026

Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026

Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026

Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026

Same journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026

Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Mar 18, 2026

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

Published on: September 22, 2017

BOTDA sensors enhanced using high-efficiency second-order distributed Brillouin amplification.

Xin-Hong Jia, Han-Qing Chang, Lei Ao

|July 14, 2016

Summary

This summary is machine-generated.

A new method using second-order distributed Brillouin amplification (DBA) improves long-distance sensing with Brillouin optical time-domain analysis (BOTDA). This technique enhances signal-to-noise ratio for more accurate fiber optic sensing.

More Related Videos

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Mechanical Mapping of Spheroids Using Brillouin Spectroscopy

Mechanical Mapping of Spheroids Using Brillouin Spectroscopy

Published on: December 12, 2025

Related Experiment Videos

Last Updated: Mar 18, 2026

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis

Published on: September 22, 2017

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

High Speed Sub-GHz Spectrometer for Brillouin Scattering Analysis

Published on: December 22, 2015

Mechanical Mapping of Spheroids Using Brillouin Spectroscopy

Mechanical Mapping of Spheroids Using Brillouin Spectroscopy

Published on: December 12, 2025

Area of Science:

Optics
Fiber Optics
Sensing Technology

Background:

Brillouin optical time-domain analysis (BOTDA) is a key technology for distributed fiber sensing.
Achieving high signal-to-noise ratio (SNR) over long distances remains a challenge in BOTDA systems.
First-order distributed Brillouin amplification (DBA) has been used to boost BOTDA performance.

Purpose of the Study:

To propose and demonstrate a novel BOTDA approach utilizing second-order distributed Brillouin amplification (DBA).
To evaluate the performance enhancement of second-order DBA compared to first-order DBA in BOTDA systems.
To achieve high-resolution, low-uncertainty temperature sensing over extended fiber optic networks.

Main Methods:

Implementation of a BOTDA system incorporating second-order DBA.
Experimental comparison of signal-to-noise ratio (SNR) between first-order and second-order DBA assisted BOTDA.
Utilizing high-efficiency pumping with specific power levels for second-order (~6 dBm) and first-order (~1.5 dBm) pumps.

Main Results:

The proposed second-order DBA-assisted BOTDA enhanced the Brillouin trace SNR by approximately 3 dB in regions of minimum sensing intensity.
Successful long-distance sensing was achieved over approximately 99 km of optical fiber.
The system demonstrated a spatial resolution of approximately 5 m and a measurement uncertainty of ±1.6°C.

Conclusions:

Second-order distributed Brillouin amplification (DBA) offers a significant advancement for Brillouin optical time-domain analysis (BOTDA).
This novel approach effectively improves SNR and enables accurate long-distance sensing with high spatial resolution.
The demonstrated system paves the way for enhanced fiber optic sensing applications.