Abstract
In this paper we present the employment of an Erbium Fiber Ring Laser structure working on the Single Longitudinal Mode regime within a Brillouin optical time domain analyzer. An analysis of some key laser parameters will be carried out, proving that a very stable operation is achieved. The associated performance of the BOTDA system, as well as the possible benefits derived from the use of the proposed laser design will also be discussed.
Highlights
Within the field of optical fiber sensors, distributed systems based on different scattering phenomena have been a very active area of research during the last years
We propose the use of a stable configuration of Erbium Fiber Ring Laser (EFRL) based on a uniform fiber Bragg grating (FBG) working on the single longitudinal mode regime (SLM) as source of a Brillouin optical time-domain analyzers (BOTDAs) system
The inherent ability of FBG-based EFRLs to be tuned over a wide spectral range and to show very narrow linewidths might be of great interest for BOTDA implementations
Summary
Within the field of optical fiber sensors, distributed systems based on different scattering phenomena have been a very active area of research during the last years. The effect of laser phase noise has been analyzed in several works, considering both pump and probe as continuous waves[7] and analyzing the influence of the laser linewidth on the noise system for different fiber lengths and pump pulse durations[8]. Within this framework, we propose the use of a stable configuration of Erbium Fiber Ring Laser (EFRL) based on a uniform FBG working on the single longitudinal mode regime (SLM) as source of a BOTDA system. The inherent ability of FBG-based EFRLs to be tuned over a wide spectral range and to show very narrow linewidths might be of great interest for BOTDA implementations
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