Distributed vibration sensor with a lasing phase-sensitive OTDR
Abstract
The authors experimentally demonstrate the operation of a lasing phase-sensitive optical time-domain reflectometer (Φ-OTDR) based on random feedback from a sensing fiber. Here, the full output of the laser provides the sensing signal, in contrast to the small backscattered signal measured in a conventional OTDR. In this proof-of-principle demonstration, the laser operates as a distributed vibration sensor with signal-to-noise ratio of 23-dB and 1.37-m spatial resolution.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 14, 2022
- Source ID
- 10.1364/oe.476182
Entities
People
- Anderson Stevens Leonidas Gomes
- Jean Pierre Von Der Weid
- Marlon M. Correia
- Walter Margulis
Organizations
- Federal University of Pernambuco
- Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
- National Council for Scientific and Technological Development
- Office of Naval Research Global
- Pontifical Catholic University of Rio de Janeiro