Abstract
Optical frequency domain reflectometry (OFDR) is a spectral measurement technique in which shifts in the local Rayleigh backscatter spectra can be used to perform distributed temperature or strain measurements relative to a reference measurement using ordinary single-mode optical fibers. This work demonstrates a data processing methodology for improving the resolvable range of temperature and strain by adaptively varying the reference measurement position by position, based on the time evolution of the local optical intensities and the correlation between the reference and active measurements. These methods nearly double the resolvable range of temperature and strain compared with that achieved using the traditional static reference approach.
| Original language | English |
|---|---|
| Pages (from-to) | 269-272 |
| Number of pages | 4 |
| Journal | Optics Letters |
| Volume | 47 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 15 2022 |
Funding
Acknowledgment. This work was funded under the Transformational Challenge Reactor (TCR) Program (https://tcr.ornl.gov/) of the U.S. Department of Energy Office of Nuclear Energy (DOE-NE). This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the U.S. Department of Energy (DOE). The U.S. government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan).
| Funders | Funder number |
|---|---|
| DOE-NE | DE-AC05-00OR22725 |
| U.S. Department of Energy | |
| Office of Nuclear Energy |