학술논문
Brillouin distributed fiber sensor based on a Dual-frequency laser
Document Type
Conference
Source
2019 IEEE SENSORS SENSORS, 2019 IEEE. :1-4 Oct, 2019
Subject
Language
ISSN
2168-9229
Abstract
We present in this paper the first demonstration of a Brillouin distributed sensor integrating a dual-frequency dual-polarization solid-state laser. This system allows the measurement of the Brillouin frequency shift at frequencies of hundreds of MHz which permits to benefit from balanced detection technique and highly sensitive electronics. The measurement results of a distributed Brillouin spectrum of two welded fibers are presented. The measured frequency shift as function of temperature is in agreement with expected values.