Advanced Coding Techniques for Long-Range Raman/BOTDA Distributed Strain and Temperature Measurements

We provide an overview of the use of optical pulse coding to enhance the performances of long-range distributed optical fiber sensors for strain and temperature measurements. First, pulse coding techniques are introduced for distributed sensing, emphasizing in particular the advantages of advanced cyclic coding for fast distributed strain and simultaneous temperature measurements. Pulse coding techniques in Raman-based distributed temperature sensors employing multimode graded index fibers are introduced, also outlining their potential to achieve meter-scale long-distance sensing in standard single-mode fibers (SMF). The use of Simplex coding in Brillouin optical time-domain analysis (BOTDA) sensors is then described, showing accurate ultralong-distance sensing with meter-scale spatial resolution. Finally, the implementation of advanced cyclic coding in a hybrid Raman/BOTDA distributed sensor is presented, allowing fast long-distance strain and simultaneous temperature measurements over the same SMF, using a single narrowband laser with meter-scale spatial resolution. We show that advanced cyclic Simplex coding enables long-distance strain sensing with subsecond measurement times, also overcoming the typical temperature and strain cross-sensitivity issue affecting standard BOTDA sensors.

[1]  Marcelo A. Soto,et al.  50-km Simplex-coded BOTDA sensor for distributed strain and temperature measurements with 1 m spatial resolution , 2010 .

[2]  M.D. Jones,et al.  Using simplex codes to improve OTDR sensitivity , 1993, IEEE Photonics Technology Letters.

[3]  Roberto Roncella,et al.  Advanced cyclic coding technique for long-range Raman DTS systems with meter-scale spatial resolution over standard SMF , 2011, 2011 IEEE SENSORS Proceedings.

[4]  Marcelo A. Soto,et al.  Hybrid BOTDA/FBG sensor for discrete dynamic and distributed static strain/temperature measurements , 2012, Other Conferences.

[5]  Marcelo A. Soto,et al.  Analysis of distributed temperature sensing based on Raman scattering using OTDR coding and discrete Raman amplification , 2007 .

[6]  Paul R. Stoddart,et al.  Fibre optic distributed temperature sensor with an integrated background correction function , 2005 .

[7]  G. Bolognini,et al.  Simplex-Coded BOTDA Sensor Over 120-km SMF With 1-m Spatial Resolution Assisted by Optimized Bidirectional Raman Amplification , 2012, IEEE Photonics Technology Letters.

[8]  B. Culshaw,et al.  Fiber-Optic Sensing: A Historical Perspective , 2008, Journal of Lightwave Technology.

[9]  G. Bolognini,et al.  Raman-based distributed temperature sensor with simplex coding and link optimization , 2006, IEEE Photonics Technology Letters.

[10]  S. Faralli,et al.  A distributed acoustic and temperature sensor using a commercial off-the-shelf DFB laser , 2015, International Conference on Optical Fibre Sensors.

[11]  S. Martín-López,et al.  Extending the Real Remoteness of Long-Range Brillouin Optical Time-Domain Fiber Analyzers , 2014, Journal of Lightwave Technology.

[12]  Marcelo A. Soto,et al.  Long-range BOTDA sensing using optical pulse coding and single source bi-directional distributed Raman amplification , 2011, 2011 IEEE SENSORS Proceedings.

[13]  Arthur H. Hartog,et al.  Influence of modulation instability on distributed optical fiber sensors based on spontaneous Brillouin scattering , 2004 .

[14]  G. Bolognini,et al.  Brillouin-Based Distributed Temperature Sensor Employing Pulse Coding , 2008, IEEE Sensors Journal.

[15]  S. M. Foaleng,et al.  Impact of self phase modulation on the performance of Brillouin distributed fibre sensors , 2010, European Workshop on Optical Fibre Sensors.

[16]  X. Bao,et al.  High-resolution DPP-BOTDA over 50 km LEAF using return-to-zero coded pulses. , 2010, Optics letters.

[17]  T. Okoshi,et al.  Measurement of Raman scattering in single-mode optical fiber by optical time-domain reflectometry , 1988 .

[18]  Eiji Takada,et al.  Application of a Raman distributed temperature sensor to the experimental fast reactor JOYO with correction techniques , 2001 .

[19]  M. P. Gold,et al.  Distributed temperature sensing in solid-core fibres , 1985 .

[20]  R. Bernini,et al.  Dynamic strain measurement in optical fibers by stimulated Brillouin scattering. , 2009, Optics letters.

[21]  Mikko Jaaskelainen.  Temperature monitoring of geothermal energy wells , 2010, European Workshop on Optical Fibre Sensors.

[22]  M Taki,et al.  Hybrid Raman/Brillouin-optical-time-domain-analysis-distributed optical fiber sensors based on cyclic pulse coding. , 2013, Optics letters.

[23]  F. Sischka,et al.  Real-time long range complementary correlation optical time domain reflectometer , 1989 .

[24]  F. Di Pasquale,et al.  High performance hybrid Raman/FBG fiber optic sensor based on Simplex cyclic pulse coding , 2013 .

[25]  Chao Zhang,et al.  Experimental Demonstration on 2.5-m Spatial Resolution and 1 $^{\circ}$C Temperature Uncertainty Over Long-Distance BOTDA With Combined Raman Amplification and Optical Pulse Coding , 2011, IEEE Photonics Technology Letters.

[26]  Moshe Tur,et al.  Fast and distributed Brillouin time domain analysis of optical fibers , 2012, Other Conferences.

[27]  C. Oton,et al.  Cyclic pulse coding for fast BOTDA fiber sensors. , 2013, Optics letters.

[28]  J. Juarez,et al.  Distributed fiber-optic intrusion sensor system , 2005, Journal of Lightwave Technology.

[29]  Roberto Roncella,et al.  SNR enhancement of Raman-based long-range distributed temperature sensors using cyclic Simplex codes , 2010 .

[30]  J. N. Ross,et al.  Distributed optical fibre Raman temperature sensor using a semiconductor light source and detector , 1985 .

[31]  Marcelo A. Soto,et al.  Distributed temperature sensor system based on raman scattering using correlation-codes , 2007 .

[32]  T. Newson,et al.  Simultaneous temperature and strain measurement with combined spontaneous Raman and Brillouin scattering. , 2005, Optics letters.

[33]  S. M. Maughan,et al.  Simultaneous distributed fibre temperature and strain sensor using microwave coherent detection of spontaneous Brillouin backscatter , 2001 .

[34]  Minghong Yang,et al.  New trends and applications of optical fiber sensing technologies at the NEL-FOST , 2015, Asia Pacific Optical Sensors Conference.

[35]  T. Horiguchi,et al.  Optical-fiber-attenuation investigation using stimulated Brillouin scattering between a pulse and a continuous wave. , 1989, Optics letters.

[36]  Yonas Muanenda,et al.  Cyclic pulse coding for hybrid fast BOTDA/Raman sensor , 2014, Other Conferences.

[37]  K. Shimizu,et al.  Development of a distributed sensing technique using Brillouin scattering , 1995 .

[38]  Fabrizio Di Pasquale,et al.  Analysis of pulse modulation format in coded BOTDA sensors. , 2010, Optics express.

[39]  M. Lopez-Amo,et al.  A High-Performance Optical Time-Domain Brillouin Distributed Fiber Sensor , 2008, IEEE Sensors Journal.

[40]  Roberto Roncella,et al.  Raman-based distributed temperature sensor with 1 m spatial resolution over 26 km SMF using low-repetition-rate cyclic pulse coding. , 2011, Optics letters.

[41]  L. Thévenaz,et al.  Simple distributed fiber sensor based on Brillouin gain spectrum analysis. , 1996, Optics letters.

[42]  R. Bernini,et al.  A reconstruction technique for long-range stimulated Brillouin scattering distributed fibre-optic sensors: experimental results , 2005 .

[43]  X. Bao,et al.  22-km distributed temperature sensor using Brillouin gain in an optical fiber. , 1993, Optics letters.

[44]  Solomon W. Golomb,et al.  Some new constructions for simplex codes , 1994, IEEE Trans. Inf. Theory.

[45]  Mahmoud Farhadiroushan,et al.  Distributed Acoustic Sensing - A New Way of Listening to Your Well/Reservoir , 2012 .

[46]  F. Berghmans,et al.  Radiation-tolerant Raman distributed temperature monitoring system for large nuclear infrastructures , 2005, IEEE Transactions on Nuclear Science.

[47]  Moshe Tur,et al.  Distributed Brillouin sensing with sub-meter spatial resolution: modeling and processing. , 2011, Optics express.