ArticleLight, science & applications2024
Brillouin expanded time-domain analysis based on dual optical frequency combs.
Article in Light, science & applications, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
4 citing papers in PubMed.
- Multimodal locking-enabled robust and day-scale low-repetition-rate soliton microcomb for high-precision metrology.Light, science & applications · 2026Article
- 45 km ROTDR with 0.5 m/0.11 °C via complex-domain square-wave width-chirp pulse compression.Light, science & applications · 2026Article
- Terahertz asynchronous twin-comb for prefiguring hypersensitivity beyond spectrum domain.Nature communications · 2025Article
- High-spatiotemporal-resolution distributed Brillouin sensing with transient acoustic wave.Light, science & applications · 2025Article
Corrections and comments
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Authors and funding
5 authors.
Funding
Abstract
Brillouin Optical Time-Domain Analysis (BOTDA) is a widely-used distributed optical fiber sensing technology employing pulse-modulated pump waves for local information retrieval of the Brillouin gain or loss spectra. The spatial resolution of BOTDA systems is intrinsically linked to pulse duration, so high-resolution measurements demand high electronic bandwidths inversely proportional to the resolution. This paper introduces Brillouin Expanded Time-Domain Analysis (BETDA) as a modified BOTDA system, simultaneously achieving high spatial resolution and low detection bandwidth. Utilizing two optical frequency combs (OFCs) with different frequency intervals as pump and probe, local Brillouin gain spectra are recorded by their spectral beating traces in an expanded time domain. A 2-cm-long hotspot located in a 230 m single-mode fiber is successfully measured in the time domain with a detection bandwidth of less than 100 kHz using dual OFCs with tailored spectral phase, line spacing, and bandwidth.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.