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Type: 
Conference
Description: 
In this paper we present a Brillouin optical-time domain analysis (BOTDA) sensor combining optimized optical pulse coding with return-to-zero (RZ) modulation format and first-order bi-directional Raman amplification, using a single, shared, high relative-intensity-noise (RIN) pump source. We show that coding provides great benefits in sensing performance, even when employing noisy high-RIN Raman fiber-lasers degrading single-pulse BOTDA-schemes. Combining pulse coding with the use of a single high-power source for Raman amplification allows us to achieve distributed sensing over 120 km SMF, achieving 2.3 m spatial resolution with 52με/2.6°C strain/temperature resolutions.
Publisher: 
IEEE
Publication date: 
28 Oct 2011
Authors: 

Mohammad Taki, Marcelo A Soto, Fabrizio Di Pasquale, Gabriele Bolognini

Biblio References: 
Pages: 382-385
Origin: 
SENSORS, 2011 IEEE