Publication:
Polarization diversity scheme for BOTDA sensors based on a double orthogonal pump interaction

Date

2015

Director

Publisher

IEEE
Acceso abierto / Sarbide irekia
Artículo / Artikulua
Versión aceptada / Onetsi den bertsioa

Project identifier

MINECO//TEC2013-47264-C2-2-R/ES/recolecta

Abstract

We introduce a Brillouin optical time domain analysis (BOTDA) sensor deploying a novel polarization diversity technique based on the use of two orthogonal pump pulses which simultaneously interact with a phase modulated probe wave. The orthogonallity of the two pump pulses guarantees that two complementary Brillouin interactions take place at each position of the fiber, so that polarization independent measurements are performed throughout the fiber even if no averaging is applied. This feature can be exploited in dynamic distributed BOTDA sensors to reduce the measurement time, as no extra averaging is required to compensate the polarization dependence of Brillouin interaction. Proof of concept experiments demonstrate the feasibility of the technique by employing a completely passive scheme to generate the orthogonal pump pulses. Furthermore, the technique is stable and easy to implement, making it a perfect candidate for practical sensor implementations.

Description

Keywords

Brillouin distributed sensors, Brillouin optical time domain analysis, Heterodyne, Optical fiber sensors, Stimulated Brillouin scattering

Department

Ingeniería Eléctrica y Electrónica / Ingeniaritza Elektrikoa eta Elektronikoa

Faculty/School

Degree

Doctorate program

item.page.cita

J. Urricelqui, F. López-Fernandino, M. Sagues and A. Loayssa, "Polarization Diversity Scheme for BOTDA Sensors Based on a Double Orthogonal Pump Interaction," in Journal of Lightwave Technology, vol. 33, no. 12, pp. 2633-2638, June15, 15 2015. doi: 10.1109/JLT.2015.2401133

item.page.rights

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