Listar por tema "Brillouin distributed sensors"
Mostrando ítems 1-20 de 22
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BOTDA measurements tolerant to non-local effects by using a phase-modulated probe wave and RF demodulation
Urricelqui Polvorinos, Javier
; Sagüés García, Mikel ; Loayssa Lara, Alayn (Optical Society of America, 2013)
Artículo / Artikulua 
We demonstrate a Brillouin optical time domain analysis sensor based on a phase modulated probe wave and RF demodulation that provides measurements tolerant to frequency dependent variations of the pump pulse power induced ... -
Brillouin distributed sensing assisted by Brillouin amplification of pump pulses
Urricelqui Polvorinos, Javier ; Sagüés García, Mikel ; Loayssa Lara, Alayn (IEEE, 2014)
Contribución a congreso / Biltzarrerako ekarpena
We demonstrate, for the first time to our knowledge, the extension of the measurement range of Brillouin distributed sensors (BDS) by using a distributed Brillouin amplifier (DBA) to compensate the attenuation of the ... -
Brillouin optical time-domain analyzer for extended sensing range using probe dithering and cyclic coding
Iribas Pardo, Haritz ; Loayssa Lara, Alayn ; Sauser, Florian; Llera, Miguel; Le Floch, Sébastien (SPIE, 2017)
Contribución a congreso / Biltzarrerako ekarpena
We present an enhanced performance Brillouin optical time-domain analysis sensor that uses dual probes waves with optical frequency modulation and cyclic coding. The frequency modulation serves to increase the probe power ... -
Brilloun optical time domain analysis sensor assisted by a Brillouin distributed amplifier
Urricelqui Polvorinos, Javier ; Sagüés García, Mikel ; Loayssa Lara, Alayn (SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena
We demonstrate the extension of the measurement range of Brillouin optical time-domain analysis (BOTDA) sensors using a distributed Brillouin amplifier (DBA). The technique is based on injecting a DBA pump wave in the ... -
Compensation of nonlocal effects induced by the extinction ratio of pump pulses in Brillouin optical time-domain analysis sensors
Mariñelarena Ollacarizqueta, Jon ; Iribas Pardo, Haritz ; Urricelqui Polvorinos, Javier ; Loayssa Lara, Alayn (Optical Society of America, 2019)
Artículo / Artikulua
We demonstrate a technique to compensate the nonlocal effects that appear in Brillouin optical time-domain analysis sensors when pump pulses with limited extinction ratio are deployed. These recently discovered nonlocal ... -
Contributions to the development of Brillouin distributed sensors for structural health monitoring
Mariñelarena Ollacarizqueta, Jon (2019)
Tesis doctoral / Doktoretza tesia
The main objectives of this thesis is to contribute to the enhancement of the performance of distributed optical ber sensors (DOFS) based on stimulated Brillouin scattering (SBS) by analyzing their limitations and proposing ... -
Detrimental effects in Brillouin distributed sensors caused by EDFA transient
Feng, Cheng; Iribas Pardo, Haritz ; Mariñelarena Ollacarizqueta, Jon ; Schneider, Thomas; Loayssa Lara, Alayn (Optical Society of AmericaIEEE, 2017)
Contribución a congreso / Biltzarrerako ekarpena
We investigate the deleterious effect and the error in Brillouin optical time-domain analyzers induced by the combination of a low extinction ratio pulse generation with the transient behavior of erbium-doped fiber amplifiers. -
Dynamic BOTDA measurements based on Brillouin phase-shift and RF demodulation
Urricelqui Polvorinos, Javier ; Zornoza Indart, Ander; Sagüés García, Mikel ; Loayssa Lara, Alayn (Optical Society of America, 2012)
Artículo / Artikulua
We demonstrate a novel dynamic BOTDA sensor based, for the first time to our knowledge, on the use of the Brillouin phase shift in addition to the conventional Brillouin gain. This provides the advantage of measurements ... -
Egituren egoeraren monitorizaziorako zuntz optikoan oinarritutako sentsore sinplifikatua
Iribas Pardo, Haritz ; Sagüés García, Mikel ; Mariñelarena Ollacarizqueta, Jon ; Loayssa Lara, Alayn (Udako Euskal Unibertsitatea, 2015)
Contribución a congreso / Biltzarrerako ekarpena
Brillouin hedatuko denbora eremu optikoaren analisian (BOTDA) oinarritutako sentsoreak, estruktura handien (100 km luzerako estrukturak) deformazioa eta tenperatura neurtzeko gaitasuna dute. Lan honetan, BOTDA konfigurazio ... -
Enhanced tolerance to pulse extinction ratio in Brillouin optical time domain analysis sensors by dithering of the optical source
Iribas Pardo, Haritz ; Urricelqui Polvorinos, Javier ; Sagüés García, Mikel ; Loayssa Lara, Alayn (SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena
We demonstrate the relaxation of the stringent requirements placed on the pulse extinction ratio in long-range Brillouin optical time-domain analysis sensors (BOTDA) by modulating the wavelength of the laser source that ... -
Enhancement of signal-to-noise ratio in Brillouin optical time domain analyzers by dual-probe detection
Iribas Pardo, Haritz ; Loayssa Lara, Alayn ; Sauser, Florian; Llera, Miguel; Le Floch, Sébastien (SPIE, 2017)
Contribución a congreso / Biltzarrerako ekarpena
We demonstrate a simple technique to enhance the signal-to-noise ratio (SNR) in Brillouin optical time-domain analysis sensors by the addition of gain and loss processes. The technique is based on the shift of the pump ... -
Fiber-optic brillouin distributed sensors: from dynamic to long-range measurements
Loayssa Lara, Alayn; Urricelqui Polvorinos, Javier ; Iribas Pardo, Haritz ; Mompó Roselló, Juan José ; Mariñelarena Ollacarizqueta, Jon (CRC Press, 2018)
Capítulo de libro / Liburuen kapitulua
This chapter focuses on Brillouin optical time-domain analysis (BOTDA) sensors because they are the most successful Brillouin distributed sensors (BDS) type in terms of performance and practical applications. Distributed ... -
Latest research on long-range Brillouin distributed sensing
Loayssa Lara, Alayn ; Urricelqui Polvorinos, Javier ; Iribas Pardo, Haritz ; Mariñelarena Ollacarizqueta, Jon ; Mompó Roselló, Juan José (SPIE, 2019)
Contribución a congreso / Biltzarrerako ekarpena
We review the latest developments in long-range Brillouin optical time-domain analysis sensors. The factors that impair the performance of these sensors, particularly in terms of their distance range, are discussed together ... -
Overcoming non-local effects and Brillouin threshold limitations in Brillouin distributed sensors
Urricelqui Polvorinos, Javier ; Ruiz Lombera, Rubén; Sagüés García, Mikel ; Mirapeix, Jesús; López Higuera, José Miguel; Loayssa Lara, Alayn (SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena
We demonstrate, for the first time to our knowledge, a Brillouin optical time domain analysis sensor that is able to operate with a probe power larger than the Brillouin threshold of the deployed sensing fiber and that ... -
Overcoming non-local effects and Brillouin threshold limitations in Brillouin optical time domain sensors
Ruiz Lombera, Rubén; Urricelqui Polvorinos, Javier ; Sagüés García, Mikel ; Mirapeix, Jesús; López Higuera, José Miguel; Loayssa Lara, Alayn (IEEE, 2015)
Artículo / Artikulua
We demonstrate, for the first time to our knowledge, a Brillouin optical time domain analysis (BOTDA) sensor that is able to operate with a probe power larger than the Brillouin threshold of the deployed sensing fiber ... -
Polarization diversity for Brillouin distributed fiber sensors based on a double orthogonal pump
Urricelqui Polvorinos, Javier ; López Fernandino, Felipe; Sagüés García, Mikel ; Loayssa Lara, Alayn (SPIE, 2014)
Contribución a congreso / Biltzarrerako ekarpena
We demonstrate a novel Brillouin optical time domain analysis sensor deploying a polarization diversity technique which eliminates the need for polarization scrambling, providing measurements that are largely immune to the ... -
Polarization diversity scheme for BOTDA sensors based on a double orthogonal pump interaction
Urricelqui Polvorinos, Javier ; López Fernandino, Felipe; Sagüés García, Mikel ; Loayssa Lara, Alayn (IEEE, 2015)
Artículo / Artikulua
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 ... -
Second-order non-local effects mitigation in BOTDA sensors by tracking the BFS profile
Mompó Roselló, Juan José; Iribas Pardo, Haritz ; Urricelqui Polvorinos, Javier ; Loayssa Lara, Alayn (SPIE, 2017)
Contribución a congreso / Biltzarrerako ekarpena
We demonstrate a technique to mitigate the residual second-order non-local effects in Brillouin optical time-domain analysis (BOTDA) sensors in which the Brillouin frequency shift (BFS) profile is not uniform along the ... -
Second-order nonlocal effects mitigation in Brillouin optical time-domain analysis sensors by tracking the Brillouin frequency shift profile of the fiber
Mompó Roselló, Juan José; Iribas Pardo, Haritz ; Urricelqui Polvorinos, Javier ; Loayssa Lara, Alayn (IEEE, 2017)
Artículo / Artikulua
We report on an additional limitation that has been found in Brillouin optical time-domain analysis (BOTDA) sensors due to the so-called second-order nonlocal effects (NLE). Second-order NLE appear in BOTDA setups that ... -
Simplified Brillouin sensor for structural health monitoring applications based on passive optical filtering
Iribas Pardo, Haritz ; Urricelqui Polvorinos, Javier ; Mariñelarena Ollacarizqueta, Jon ; Sagüés García, Mikel ; Loayssa Lara, Alayn (SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena
We present a simplified configuration for distributed Brillouin optical time domain analysis sensors. The technique is based on passive optical filtering of the spectral components generated in an RF-pulse-modulated optical ...
