Frequency-comb enabled spectrum-correlation reflectometry for distributed fiber-optic sensing.

ABSTRACT: Distributed fiber-optic sensing has become an indispensable tool for large-scale structural and environmental monitoring, where spectral interrogation of backscattering light enables high-precision quantitative measurement of external perturbations. Conventional spectral analysis methods, typically based on frequency-domain serial interrogation or time-to-frequency mapping, face inherent trade-offs between measurement speed, dynamic strain measurement range, and system complexity. Here, we present a distributed frequency comb enabled spectrum-correlation reflectometry as a universal spectral analysis framework that leverages optical frequency comb for parallel multi-frequency interrogation, which is experimentally demonstrated in a phase-sensitive optical time-domain reflectometry (φ-OTDR)

SUBMITTER: Lin Z 

PROVIDER: S-EPMC12756320 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature