Wikipedia

Luc Thévenaz

Luc Thévenaz (born 1958 in Geneva) is a Swiss physicist who specializes in fibre optics. He is a professor of physics at EPFL (École Polytechnique Fédérale de Lausanne) and the head of the Group for Fibre Optics School of Engineering.[1]

Professor
Luc Thévenaz
Luc Thévenaz in 2016
Born1958 (age 65–66)
Geneva
Known forBrillouin scattering in optical fibres
Academic background
EducationPhysics
Alma materUniversity of Geneva
Geneva Observatory
ThesisEffets et mesure de la dispersion dans les guides d'ondes optiques (1988)
Doctoral advisorOlivier Guisan
Jean-Paul Pellaux
Other advisorsPhilippe Robert
Herbert John Shaw
Academic work
InstitutionsEPFL (École Polytechnique Fédérale de Lausanne)
Main interestsFibre optics
Nonlinear fibre optics
Optical fibre sensing
Atimulated Brillouin scattering
Distributed fibre sensing
Optical signal processing
Slow & fast light
Photoacoustic spectroscopy
Websitehttps://gfo.epfl.ch

Career

edit

Thévenaz studied a Master's degree in physics at University of Geneva and in 1982 wrote his thesis in astrophysics at the Geneva Observatory under the supervision of André Maeder, in which he developed a model to predict the effect of stellar wind on the apparent radius and temperature of stars. He then joined Jean-Paul Pellaux at University of Geneva as PhD student, and graduated in 1988 with a thesis on measurement of chromatic dispersion in optical fibres.[2] During this time, he designed a technique to make accurate time delay measurements with picosecond resolution using a halogen lamp light source.[3][4][5][6] As a postdoctoral researcher he joined Philippe Robert at EPFL's Institute of Electrical Engineering in 1988, to conduct research on polarization mode dispersion and brfringence measurements in optical fibres.[7] In 1991, he visited visiting postdoctoral researcher both PUC University in Rio de Janeiro to develop fast pulse detector using semiconductor laser dynamics, and the Ginzton Lab in the group of Herbert John Shaw at Stanford University to do research on optical gyroscopes using stimulated Brillouin scattering lasers in optical fibres.[8]

In 1992, he became a research associate EPFL's Institute of Electrical Engineering, and continued his research on stimulated Brillouin scattering in optical fibres and applied it to distributed fibre sensors.[9][10][11] As visiting scientist he joined in 1998 KAIST (Korean Advanced Institute of Science and Technology) to work on Brillouin fibre lasers.[12] In 1998, he was made senior lecturer at EPFL, and started working on advanced measurement techniques and signal processing in optical fibres, and on gas traces detection using laser spectroscopy and photo-acoustic detection. By using stimulated Brillouin scattering, he was able to demonstrate the generation of slow and fast light in optical fibres.[13][14][15]

Since 2007 he has been visiting professor at Shanghai Jiao Tong University, Tel Aviv University, University of Sydney, and the Technical University of Valencia.[16][17]

Since 2008 Thévenaz has been adjunct professor at EPFL's Institute of Electrical Engineering and head of the Group of Fibre Optics.[1]

Research

edit

Thévenaz's research is focused on distributed fibre sensing and on slow & fast light.[18]

Among his key findings figure novel techniques to achieve centimetric spatial resolutions and increase the number of resolved points up to 1 million in distributed fibre sensing;[19][20][21][22][23] the development on coding techniques and contributions to the determination of fundamental limits;[24][25] the application of spider silk optical fibre in chemical sensing;[26] and the achievement of massive optical amplification in hollow core fibres using stimulated Brillouin scattering in gases.[27][28][29][30][31]

Thévenaz's research was featured in several news outlet such as: Optics,[32] ScienceDaily,[33] Le Nouvelliste,[34] 24 heures,[35] and RTS.[36]

Distinctions

edit

Among others Thévenaz is a fellow of the Optical Society of America (since 2010),[37] and the IEEE (since 2017). He has been a co-executive editor-in-chief of the journal Nature Light (since 2018) and an editorial advisory board member of the Journal APL Photonics.

He was a coordinator of the Marie-Curie Innovative Training Network "FINESSE – Fibre Nervous Sensing Systems" (2016–2020).

He is a member of the SwissPhotonics (since 2013), and the SPIE (since 2015).[38]

He is the co-founder of the spin-off company Omnisens producing long-distance distributed fibre sensing systems for oil and gas, power and civil engineering infrastructures.[39]

Selected works

edit

References

edit
  1. ^ a b "GROUP FOR FIBRE OPTICS (GFO)". www.epfl.ch. Retrieved 17 February 2021.
  2. ^ Thevenaz, Luc (1988). Effets et mesure de la dispersion dans les guides d'ondes optiques (Thesis). University of Geneva. doi:10.13097/archive-ouverte/unige:131080.
  3. ^ Thevenaz, L.; Pellaux, J.-P.; Von der Weid, J.-P. (1988). "All-fiber interferometer for chromatic dispersion measurements". Journal of Lightwave Technology. 6 (1): 1–7. Bibcode:1988JLwT....6....1T. doi:10.1109/50.3953. ISSN 0733-8724.
  4. ^ von der Weid, J.-P.; Thevenaz, L.; Pellaux, J.-P. (1987). "Interferometric measurements of chromatic and polarisation mode dispersion in highly birefringent single-mode fibres". Electronics Letters. 23 (4): 151. Bibcode:1987ElL....23..151V. doi:10.1049/el:19870106.
  5. ^ Thevenaz, L.; Pellaux, J.-P. (October 1988). "Group delay measurement in single-mode fibers with true picosecond resolution using double optical modulation". Journal of Lightwave Technology. 6 (10): 1470–1475. Bibcode:1988JLwT....6.1470T. doi:10.1109/50.7903.
  6. ^ Thevenaz, L.; Pellaux, J.-P.; Gisin, N.; Von Der Weid, J.-P. (August 1989). "Birefringence measurements in fibers without polarizer". Journal of Lightwave Technology. 7 (8): 1207–1212. Bibcode:1989JLwT....7.1207T. doi:10.1109/50.32384.
  7. ^ Luc, Thévenaz; P., Robert (1990). "Simple method for polarization dispersion measurements in long single-mode fibres". ECOC 90. 16th European Conference on Optical Communication.
  8. ^ Huang, S.; Thevenaz, L.; Toyama, K.; Kim, B.Y.; Shaw, H.J. (March 1993). "Optical Kerr-effect in fiber-optic Brillouin ring laser gyroscopes". IEEE Photonics Technology Letters. 5 (3): 365–367. Bibcode:1993IPTL....5..365H. doi:10.1109/68.205640. ISSN 1041-1135. S2CID 35397180.
  9. ^ Nikles, M.; Thevenaz, L.; Robert, P.A. (October 1997). "Brillouin gain spectrum characterization in single-mode optical fibers". Journal of Lightwave Technology. 15 (10): 1842–1851. Bibcode:1997JLwT...15.1842N. doi:10.1109/50.633570.
  10. ^ Niklès, Marc; Thévenaz, Luc; Robert, Philippe A. (15 May 1996). "Simple distributed fiber sensor based on Brillouin gain spectrum analysis". Optics Letters. 21 (10): 758. Bibcode:1996OptL...21..758N. doi:10.1364/OL.21.000758. ISSN 0146-9592. PMID 19876149.
  11. ^ Boschung, J.; Robert, P.A.; Thévenaz, L. (1 September 1994). "High-accuracy measurement of the linewidth of a Brillouin fibre ring laser". Electronics Letters. 30 (18): 1488–1489. Bibcode:1994ElL....30.1488B. doi:10.1049/el:19941053. ISSN 0013-5194.
  12. ^ Jae Chul Yong; Thevenaz, L.; Byoung Yoon Kim (February 2003). "Brillouin fiber laser pumped by a DFB laser diode". Journal of Lightwave Technology. 21 (2): 546–554. Bibcode:2003JLwT...21..546Y. doi:10.1109/JLT.2003.808768. ISSN 0733-8724.
  13. ^ Thévenaz, Luc (August 2008). "Slow and fast light in optical fibres". Nature Photonics. 2 (8): 474–481. Bibcode:2008NaPho...2..474T. doi:10.1038/nphoton.2008.147. ISSN 1749-4885.
  14. ^ González Herráez, Miguel; Thévenaz, Luc; Robert, Philippe (15 November 2003). "Distributed measurement of chromatic dispersion by four-wave mixing and Brillouin optical-time-domain analysis". Optics Letters. 28 (22): 2210–2. Bibcode:2003OptL...28.2210G. doi:10.1364/OL.28.002210. ISSN 0146-9592. PMID 14649944.
  15. ^ Thévenaz, L; Floch, S Le; Alasia, D; Troger, J (1 August 2004). "Novel schemes for optical signal generation using laser injection locking with application to Brillouin sensing". Measurement Science and Technology. 15 (8): 1519–1524. Bibcode:2004MeScT..15.1519T. doi:10.1088/0957-0233/15/8/015. ISSN 0957-0233. S2CID 250765364.
  16. ^ Zadok, Avi; Zilka, Elad; Eyal, Avishay; Thévenaz, Luc; Tur, Moshe (22 December 2008). "Vector analysis of stimulated Brillouin scattering amplification in standard single-mode fibers". Optics Express. 16 (26): 21692–707. Bibcode:2008OExpr..1621692Z. doi:10.1364/OE.16.021692. ISSN 1094-4087. PMID 19104601.
  17. ^ Pant, Ravi; Poulton, Christopher G.; Choi, Duk-Yong; Mcfarlane, Hannah; Hile, Samuel; Li, Enbang; Thevenaz, Luc; Luther-Davies, Barry; Madden, Stephen J.; Eggleton, Benjamin J. (25 April 2011). "On-chip stimulated Brillouin scattering". Optics Express. 19 (9): 8285–90. Bibcode:2011OExpr..19.8285P. doi:10.1364/OE.19.008285. hdl:10453/123095. ISSN 1094-4087. PMID 21643078. S2CID 6082816.
  18. ^ González-Herráez, Miguel; Martin-Lopez, Sonia; Thévenaz, Luc (1 August 2012). "Analytical expression of pulse broadening in an arbitrary linear slow light medium". Optics Letters. 37 (15): 3171–3. Bibcode:2012OptL...37.3171G. doi:10.1364/OL.37.003171. hdl:10261/65527. ISSN 0146-9592. PMID 22859122.
  19. ^ Soto, Marcelo A.; Bolognini, Gabriele; Di Pasquale, Fabrizio; Thévenaz, Luc (15 January 2010). "Simplex-coded BOTDA fiber sensor with 1 m spatial resolution over a 50 km range". Optics Letters. 35 (2): 259–61. Bibcode:2010OptL...35..259S. doi:10.1364/OL.35.000259. ISSN 0146-9592. PMID 20081987.
  20. ^ Kwang Yong Song; Sanghoon Chin; Primerov, Nikolay; Thevenaz, Luc (July 2010). "Time-Domain Distributed Fiber Sensor With 1 cm Spatial Resolution Based on Brillouin Dynamic Grating". Journal of Lightwave Technology. 28 (14): 2062–2067. Bibcode:2010JLwT...28.2062S. doi:10.1109/JLT.2010.2050763. ISSN 0733-8724. S2CID 14777399.
  21. ^ Zadok, A.; Antman, Y.; Primerov, N.; Denisov, A.; Sancho, J.; Thevenaz, L. (18 September 2012). "Random-access distributed fiber sensing". Laser & Photonics Reviews. 6 (5): L1–L5. Bibcode:2012LPRv....6L...1Z. doi:10.1002/lpor.201200013. S2CID 122949630.
  22. ^ Soto, Marcelo A.; Ramírez, Jaime A.; Thévenaz, Luc (April 2016). "Intensifying the response of distributed optical fibre sensors using 2D and 3D image restoration". Nature Communications. 7 (1): 10870. Bibcode:2016NatCo...710870S. doi:10.1038/ncomms10870. ISSN 2041-1723. PMC 4773526. PMID 26927698.
  23. ^ Denisov, Andrey; Soto, Marcelo A; Thévenaz, Luc (May 2016). "Going beyond 1000000 resolved points in a Brillouin distributed fiber sensor: theoretical analysis and experimental demonstration". Light: Science & Applications. 5 (5): e16074. Bibcode:2016LSA.....5E6074D. doi:10.1038/lsa.2016.74. ISSN 2047-7538. PMC 6059930. PMID 30167163.
  24. ^ Soto, Marcelo A.; Alem, Mehdi; Amin Shoaie, Mohammad; Vedadi, Armand; Brès, Camille-Sophie; Thévenaz, Luc; Schneider, Thomas (4 December 2013). "Optical sinc-shaped Nyquist pulses of exceptional quality". Nature Communications. 4 (1): 2898. Bibcode:2013NatCo...4.2898S. doi:10.1038/ncomms3898. ISSN 2041-1723. PMC 3863974. PMID 24301610.
  25. ^ Sun, Xizi; Yang, Zhisheng; Hong, Xiaobin; Zaslawski, Simon; Wang, Sheng; Soto, Marcelo A.; Gao, Xia; Wu, Jian; Thévenaz, Luc (December 2020). "Genetic-optimised aperiodic code for distributed optical fibre sensors". Nature Communications. 11 (1): 5774. Bibcode:2020NatCo..11.5774S. doi:10.1038/s41467-020-19201-1. ISSN 2041-1723. PMC 7666181. PMID 33188171.
  26. ^ Hey Tow, Kenny; Chow, Desmond M.; Vollrath, Fritz; Dicaire, Isabelle; Gheysens, Tom; Thevenaz, Luc (15 February 2018). "Exploring the Use of Native Spider Silk as an Optical Fiber for Chemical Sensing". Journal of Lightwave Technology. 36 (4): 1138–1144. Bibcode:2018JLwT...36.1138H. doi:10.1109/JLT.2017.2756095. ISSN 0733-8724. S2CID 3420102.
  27. ^ Soto, Marcelo A.; Thévenaz, Luc (16 December 2013). "Modeling and evaluating the performance of Brillouin distributed optical fiber sensors". Optics Express. 21 (25): 31347–66. Bibcode:2013OExpr..2131347S. doi:10.1364/OE.21.031347. ISSN 1094-4087. PMID 24514710.
  28. ^ Santagiustina, Marco; Chin, Sanghoon; Primerov, Nicolay; Ursini, Leonora; Thévenaz, Luc (3 April 2013). "All-optical signal processing using dynamic Brillouin gratings". Scientific Reports. 3 (1): 1594. Bibcode:2013NatSR...3E1594S. doi:10.1038/srep01594. ISSN 2045-2322. PMC 3615338. PMID 23549159.
  29. ^ Chow, Desmond M.; Yang, Zhisheng; Soto, Marcelo A.; Thévenaz, Luc (31 July 2018). "Distributed forward Brillouin sensor based on local light phase recovery". Nature Communications. 9 (1): 2990. Bibcode:2018NatCo...9.2990C. doi:10.1038/s41467-018-05410-2. ISSN 2041-1723. PMC 6068146. PMID 30065245.
  30. ^ Gyger, Flavien; Liu, Junqiu; Yang, Fan; He, Jijun; Raja, Arslan S.; Wang, Rui Ning; Bhave, Sunil A.; Kippenberg, Tobias J.; Thévenaz, Luc (3 January 2020). "Observation of Stimulated Brillouin Scattering in Silicon Nitride Integrated Waveguides". Physical Review Letters. 124 (1): 013902. arXiv:1908.09815. Bibcode:2020PhRvL.124a3902G. doi:10.1103/PhysRevLett.124.013902. PMID 31976733. S2CID 202152296.
  31. ^ Yang, Fan; Gyger, Flavien; Thévenaz, Luc (November 2020). "Intense Brillouin amplification in gas using hollow-core waveguides". Nature Photonics. 14 (11): 700–708. arXiv:1911.04430. Bibcode:2020NaPho..14..700Y. doi:10.1038/s41566-020-0676-z. ISSN 1749-4885. PMC 7610518. PMID 33824683. S2CID 221092214.
  32. ^ "EPFL develops technology to amplify light inside hollow-core fiber".
  33. ^ "New fiber optic sensors transmit data up to 100 times faster". ScienceDaily. Retrieved 19 February 2021.
  34. ^ "Le fil d'araignée a des propriétés insoupçonnées". Le Nouvelliste.
  35. ^ "Il manque des candidats pour les élections complémentaires". 24 heures (in French). ISSN 1424-4039. Retrieved 19 February 2021.
  36. ^ "Dix fois plus de débit dans les fibres – Radio". Play RTS (in French). 5 December 2013. Retrieved 19 February 2021.
  37. ^ "Prof. Thévenaz elected as Fellow of the Optical Society of America". sti.epfl.ch. Retrieved 19 February 2021.
  38. ^ "Luc Thévenaz". EPFL.
  39. ^ "Omnisens". Omnisens – Securing asset integrity – Morges. Retrieved 19 February 2021.
edit
Retrieved from "https://en.wikipedia.org/w/index.php?title=Luc_Thévenaz&oldid=1193598426"