Open AccessBandwidth-division in digitally enhanced optical frequency domain reflectometry
Author(s) -
Nicolas Riesen,
Thanh Lam,
J. H. Chow
Publication year - 2013
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.004017
Subject(s) - bandwidth (computing) , reflectometry , optics , sampling (signal processing) , interferometry , materials science , time domain , computer science , physics , telecommunications , detector , computer vision
We demonstrate for the first time the use of digital range-gating in OFDR to allow for orders of magnitude reduction in the required sampling rates. This allows for sensing over long lengths of fiber with fast sweeps of the optical source frequency, without requiring impractical sampling rates. The range-gating is achieved using digitally enhanced interferometry (DI), which isolates individual sections of OFDR signal bandwidth. The reductions in sampling rates permitted by the bandwidth-division are demonstrated both numerically and experimentally.