# Investigation and Comparison of $\varphi $ -OTDR and OTDR-Interferometry via Phase Demodulation

> Research article (IEEE Sensors Journal, 2017) · cited 25× · AI/ML

**Wikidata**: [openalex:W2778787316](https://www.wikidata.org/wiki/openalex:W2778787316)  
**Source**: https://4ort.xyz/entity/investigation-and-comparison-of-varphi-otdr-and-otdr-interferometry-via-phase-demodulation