WELCOME TO PROF. AZAÑA´S RESEARCH GROUP AT INRS-EMT
The Photonic Signals and Systems Group led by Prof. José Azaña is a very dynamic and innovative research group at INRS-EMT in Montreal, Canada.
The group has a worldwide recognized record of achievements in ultrafast optical signal processing using fiber and integrated-waveguide photonic components and devices. Group activities comprise theoretical and experimental research on a very diverse range of device and system – level topics, at the leading edge of technology. Applications of specific interest to the group include ultrahigh-speed communications, all-optical computing, optical pulse shaping and arbitrary waveform generation, ultrafast metrology, advanced optical imaging, and broadband microwave information processing.
Recent Highlights
Full-field broadband invisibility through reversible wave frequency-spectrum control
Featured in Nova PBS video on invisibility!
Invited review papers
Please feel free to read the following invited papers that provide comprehensive reviews of some of the work carried out by the group:
L. Romero Cortés, D. Onori, H. Guillet de Chatellus, M. Burla, J. Azaña, “Towards on-chip photonic-assisted radio-frequency spectral measurement and monitoring,,”Optica, vol. 7, pp. 434-447 (2020).
L. Romero Cortés, R. Maram, H. Guillet de Chatellus, J. Azaña, “Arbitrary energy-preserving control of optical pulse trains and frequency combs through generalized Talbot effects,,” Laser & Photonics Reviews, vol. 13, article #1900176 (2019).
S. Kaushal, R. Cheng, M. L. Ma, A. Mistry, M. Burla, L. Chrostowski, J. Azaña, “Optical signal processing based on silicon photonics waveguide Bragg gratings: review,,” Frontiers of Optoelectronics, vol. 11, pp. 163-168 (2018).
C. Reimer, Y. Zhang, P. Roztocki, S. Sciara, M. Islam, B. Fischer, L. Romero Cortés, B. Wetzel, A. Cino, S. T. Chu, B. E. Little, D. J. Moss, L. Caspani, J. Azaña, M. Kues, R. Morandotti, “On-chip frequency combs and telecommunications signal processing meet quantum optics,,” Frontiers of Optoelectronics, vol. 11, pp. 134-147 (2018).
R. Maram, L.R. Cortés, J. Van Howe, J. Azaña, “Energy-preserving arbitrary repetition-rate control of periodic pulse trains using temporal Talbot effects,,” IEEE/OSA J. Lightwave Technol., vol. 35, pp. 658-668 (2017).
M. R. Fernández-Ruiz, R. Ashrafi, A. Carballar, S. LaRochelle, J. Azaña, “Sub-picosecond optical pulse shaping based on fiber grating devices,” – Chapter 9 in the multi-author book Shaping Light in Nonlinear Optical Fibers by S. Boscolo and C. Finot (Eds.), John Wiley & Sons, 2017.
Burla, L. R. Cortes, M. Li, X. Wang, L. Chrostowski, J. Azaña, “Integrated waveguide Bragg gratings for microwave photonic signal processing,” Opt. Express, vol. 21, pp. 25120-25147 (2013).
J. Ahn, Y. Park, J. Azaña, “Ultra-rapid optical frequency-domain reflectometry based upon dispersion-induced time stretching: Principle and application,” IEEE J. Sel. Top. Quantum Electron., vol. 18, pp. 148-165 (2012).
J. Azaña, L.K. Oxenløwe, E. Palushani, R. Slavík, M. Galili, H.C.H. Mulvad, H. Hu, Y. Park, A.T. Clausen, P. Jeppesen, “In-fiber sub-picosecond pulse shaping for nonlinear optical telecommunication data processing at 640Gb/s,” Hindaway - International Journal of Optics, special issue on ‘Non-linear Fibre-based Photonic Technologies’, vol. 2012, article ID 895281, 16 pages (2012).
J. Azaña, Y. Park, F. Li, “Linear Self-Referenced Complex-Field Characterization of Fast Optical Signals Using Photonic Differentiation,” Opt. Comm., vol. 284, pp. 3772-3784 (2011).
J. Azaña, “Ultrafast analog all-optical signal processors based on fiber-grating devices,” IEEE Photonics Journal, vol. 2, pp. 359-386 (2010).
Student/Researcher Position Openings
Presently, there are openings in the group for new graduate (Master, PhD) students, postdoctoral research associates, and visiting short-term students (undergraduate and graduate levels), to carry out exciting research work on projects along the lines briefly outlined in our Web site.
If interested and motivated, please feel free to contact directly Prof. José Azaña at Jose.Azana@inrs.ca, including a detailed motivation letter and CV.