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- Title
A Distributed Acoustic Sensor with a 120-km Sensing Range Based on a Phase-Sensitive Optical Time-Domain Reflectometer and a Remotely Pumped Erbium-Doped Fiber Amplifier.
- Authors
Dudin, A. S.; Kharasov, D. R.; Fomiryakov, E. A.; Nikitin, S. P.; Nanii, O. E.; Treshchikov, V. N.
- Abstract
The operating range of a distributed acoustic sensor based on a phase-sensitive optical time-domain reflectometer has been increased using an erbium-doped fiber amplifier with remote forward pumping. It is shown that by incorporating a single segment of erbium-doped fiber at a distance of 70 km and pumping it from the front end by a 500-mW laser at a wavelength of 1480 nm over the sensing fiber, it is possible to increase the operating range of the reflectometer by 45 km and, thereby, obtain the total operating range as large as 120 km along a standard single-mode fiber.
- Subjects
OPTICAL time-domain reflectometry; DISTRIBUTED sensors; FIBER lasers; REFLECTOMETER; SINGLE-mode optical fibers
- Publication
Instruments & Experimental Techniques, 2023, Vol 66, Issue 5, p795
- ISSN
0020-4412
- Publication type
Article
- DOI
10.1134/S0020441223050184