Directory of Experts
Back to search results
Sébastien Loranger
Bacc. (Poly), M. Sc. A. (Poly), Ph.D. (Poly)

Research interests and affiliations

Research interests
  • Optical fiber components and lasers
  • Optoelectronics and nonlinear optics
  • Development of optical sensors and optical fiber sensors
  • Distributed sensing system optimisation and application
  • Bragg gratings and photonic crystals
  • Waveguide and microstructure laser writing
  • Integrated photonics: integration of optical frequencies and THz in single platforms
  • THz photonic crystals
  • Application of photonic technologies (ex: LIDAR).
Expertise type(s) (NSERC subjects)
  • 2011 Optical materials
  • 2502 Electromagnetics, compatibility and interference
  • 2505 Photonic devices and networks
  • 2507 Communications systems
  • 3110 Optics (see also photon devices 2505)
  • 3111 Lasers
  • 3112 Photonics
  • 3306 Optical properties


Recent publications
Journal article
Loranger, S. & Kashyap, R. (2017). Are optical fibers really uniform? Measurement of refractive index on a centimeter scale. Optical Letters, 42(9), 1832-1835. Retrieved from
Conference paper
Tehranchi, A., Iezzi, V.L., Loranger, S. & Kashyap, R. (2017). Control of stokes waves in a Brillouin-erbium highly-nonlinear-fiber laser. Paper presented at the Advanced Photonics, Sensors 2017, New Orleans, Louisiana. Retrieved from
Journal article
Parent, F., Loranger, S., Mandal, K.K., Iezzi, V.L., Lapointe, J., Boisvert, J.-S., Baiad, M.D., Kadoury, S. & Kashyap, R. (2017). Enhancement of accuracy in shape sensing of surgical needles using optical frequency domain reflectometry in optical fibers. Biomedical Optics Express, 8(4), 2210-2221. Retrieved from
Conference paper
Loranger, S. & Kashyap, R. (2017). Fiber imperfections and their impact on the performance of fiber grating DFB Raman lasers. Paper presented at the Nonlinear Optics, Waikoloa, Hawaii. Retrieved from


Sébastien Loranger graduated from his PhD at Polytechnique Montréal in Engineering Physics. He then did a post-doctoral fellowship at the renowned Max-Planck Institute in Erlangan, Germany, after which he went to acquire some industrial experience as a R&D researcher at Photonova Inc. and ITF Technologies before joining Polytechnique as a professor.


  • ELE3500 : Electromagnetic waves
  • ELE8508 : Fundamental concepts in photonics


Supervision at Polytechnique


  • Ph.D. (1)

    • Jafari, Foroogh. High power laser combiner and photonic devices for space applications.