Extension of measurement range in OCDR based on double-modulation scheme
Abstract
We extend the measurement range of optical correlation-domain reflectometry (OCDR) by modulating the laser output frequency at two frequencies, while preserving spatial resolution. We demonstrate distributed reflectivity sensing with a ten-fold extended measurement range.
- Publication:
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arXiv e-prints
- Pub Date:
- May 2023
- DOI:
- 10.48550/arXiv.2309.00620
- arXiv:
- arXiv:2309.00620
- Bibcode:
- 2023arXiv230900620S
- Keywords:
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- Physics - Instrumentation and Detectors;
- Physics - Optics
- E-Print:
- 4 pages, 6 figures