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Sidelobe apodization in optical pulse compression reflectometry for fiber optic distributed acoustic sensing

Mompó, J.J. / Martín López, Sonia / González Herráez, Miguel / Loayssa, A.

We demonstrate a technique to reduce the sidelobes in optical pulse compression reflectometry for distributed acoustic sensing. The technique is based on using a Gaussian probe pulse with linear frequency modulation. This is shown to improve the sidelobe suppression by 13 dB compared to the use of square pulses without any significant penalty in terms of spatial resolution. In addition, a 2.25 dB enhancement in signal-to-noise ratio is calculated compared to the use of receiver-side windowing. The method is tested by measuring 700 Hz vibrations with a 140 nϵ amplitude at the end of a 50 km fiber sensing link with 34 cm spatial resolution, giving a record 147,058 spatially resolved points. ; European Commission ; Ministerio de Economía y Competitividad ; Comunidad de Madrid

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Sidelobe apodization in optical pulse compression reflectometry for fiber optic distributed acoustic sensing

Mompó, J.J. / Martín López, Sonia / González Herráez, Miguel / Loayssa, A.

We demonstrate a technique to reduce the sidelobes in optical pulse compression reflectometry for distributed acoustic sensing. The technique is based on using a Gaussian probe pulse with linear frequency modulation. This is shown to improve the sidelobe suppression by 13 dB compared to the use of square pulses without any significant penalty in terms of spatial resolution. In addition, a 2.25 dB enhancement in signal-to-noise ratio is calculated compared to the use of receiver-side windowing. The method is tested by measuring 700 Hz vibrations with a 140 nϵ amplitude at the end of a 50 km fiber sensing link with 34 cm spatial resolution, giving a record 147,058 spatially resolved points. ; European Commission ; Ministerio de Economía y Competitividad ; Comunidad de Madrid

Sidelobe apodization in optical pulse compression reflectometry for fiber optic distributed acoustic sensing

Mompó, J.J. / Martín López, Sonia / González Herráez, Miguel / Loayssa, A.

We demonstrate a technique to reduce the sidelobes in optical pulse compression reflectometry for distributed acoustic sensing. The technique is based on using a Gaussian probe pulse with linear frequency modulation. This is shown to improve the sidelobe suppression by 13 dB compared to the use of square pulses without any significant penalty in terms of spatial resolution. In addition, a 2.25 dB enhancement in signal-to-noise ratio is calculated compared to the use of receiver-side windowing. The method is tested by measuring 700 Hz vibrations with a 140 nϵ amplitude at the end of a 50 km fiber sensing link with 34 cm spatial resolution, giving a record 147,058 spatially resolved points. ; European Commission ; Ministerio de Economía y Competitividad ; Comunidad de Madrid

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Titel:

Sidelobe apodization in optical pulse compression reflectometry for fiber optic distributed acoustic sensing

Beteiligte:

Mompó, J.J. (Autor:in) / Martín López, Sonia (Autor:in) / González Herráez, Miguel (Autor:in) / Loayssa, A. (Autor:in) / Ingeniería Fotónica / Universidad de Alcalá. Departamento de Electrónica

Erscheinungsdatum:

01.04.2018

Anmerkungen:

doi:10.1364/OL.43.001499

DOI:

https://doi.org/10.1364/OL.43.001499

Medientyp:

Aufsatz (Zeitschrift)

Format:

Elektronische Ressource

Sprache:

Englisch

Schlagwörter:

Remote sensing and sensors , Fiber optics sensors , Scattering , Rayleigh , Optical time domain reflectometry , Pulse compression , Ciencias tecnológicas , Electrónica , Technology , Electronics

Klassifikation:

DDC: 530 / 624

Lizenzbestimmungen:

http://creativecommons.org/licenses/by-nc-nd/4.0/

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