List of publications

Refereed Journals

  • ''Femtosecond laser direct written off-axis fiber Bragg gratings for sensing applications,'' Duarte Viveiros, Vítor A. Amorim, João M.Maia, Susana Silva, Orlando Frazão, Pedro A.S.Jorge, Luís A. Fernandes, Paulo V.S. Marques, Optics and Laser Technology, Vol. 128, 106227, August 2020
  • ''Femtosecond laser inscription of asymmetric directional couplers for in-fiber optical taps and fiber cladding photonics,'' J. R. Grenier, Luís A. Fernandes, and P. R. Herman, Optics Express, Vol. 23, Issue 13, pp. 16760-16771, 2015
  • ''Femtosecond laser 3D writing: from smart catheters to distributed lab-in-fiber sensing,'' M. Haque, J. R. Grenier, K. K. C. Lee, Luís A. Fernandes, and P. R. Herman, SPIE Newsroom, 8 June, 2015
  • ''Fiber optic stress-independent helical torsion sensor,'' Luís A. Fernandes, J. R. Grenier, J. S. Aitchison, and P. R. Herman, Optics Letters, Vol. 40, Issue 4, pp. 657-660, 2015
  • ''Chemical-assisted femtosecond laser writing of lab-in-fibers,'' M. Haque, K. K. C. Lee, S. Ho, Luís A. Fernandes, P. R. Herman, Lab on a Chip, Vol. 14, Issue 19, pp. 3817-3829, 2014
  • ''Strong birefringence tuning of optical waveguides with femtosecond laser irradiation of bulk fused silica and single mode fibers,'' Luís A. Fernandes, J. R. Grenier, P. V. S. Marques, J. S. Aitchison, and P. R. Herman, Journal of Lightwave Technology, Vol. 31, Issue 22, pp. 3563-3569, 2013
  • ''Femtosecond laser writing of optical edge filters in fused silica optical waveguides,'' J. R. Grenier, Luís A. Fernandes, and P. R. Herman, Optics Express, Vol. 21, Issue 4, pp. 4493-4502, 2013
  • ''Stress induced birefringence tuning in femtosecond laser fabricated waveguides in fused silica,'' Luís A. Fernandes, J. R. Grenier, P. R. Herman, J. S. Aitchison, and P. V. S. Marques, Optics Express, Vol. 20, Issue 22, pp. 24103-24114, 2012,
  • ''Femtosecond Laser Fabrication of Phase-Shifted Bragg Grating Waveguides in Fused Silica,'' J. R. Grenier, Luís A. Fernandes, J. S. Aitchison, P. V. S. Marques, and P. R. Herman, Optics Letters, Vol. 37, Issue 12, pp. 2289-2291, 2012,
  • ''Temperature and Strain Sensing With Femtosecond Laser Written Bragg Gratings in Defect and Non-Defect Suspended-Silica-Core Fibers,'' Luís A. Fernandes, M. Becker, O. Frazao, K. Schuster, J. Kobelke, M. Rothhardt, H. Bartelt, J. L. Santos, and P. V. S. Marques, IEEE Photonics Technology Letters, Vol. 24, Issue 7, pp. 554-556, 2012,
  • ''Femtosecond laser writing of waveguide retarders in fused silica for polarization control in optical circuits,'' Luís A. Fernandes, J. R. Grenier, P. R. Herman, J. S. Aitchison, and P. V. S. Marques, Optics Express, Vol. 19, Issue 19, pp. 18294-18301, 2011,
  • ''Integrated optical temporal Fourier transformer based on a chirped Bragg grating waveguide,'' K. Dolgaleva, A. Malacarne, P. Tannouri, Luís A. Fernandes, J. R. Grenier, J. Aitchison, J. Azana, R. Morandotti, P. R. Herman, and P. V. Marques, Optics Letters, Vol. 36, Issue 22, pp. 4416-4418, 2011,
  • ''Femtosecond laser fabrication of birefringent directional couplers as polarization beam splitters in fused silica,'' Luís A. Fernandes, J. R. Grenier, P. R. Herman, J. S. Aitchison, and P. V. S. Marques, Optics Express, Vol. 19, Issue 13, pp. 11992-11999, 2011,
  • ''Escrita de dispositivos ópticos integrados com laser de femtosegundos,'' Luís A. Fernandes, J. R. Grenier, P. R. Herman, J. S. Aitchison, and P. V. S. Marques, Gazeta de Física, Vol. 34, n 1, pp. 17-21, 2011
  • ''Inscription of Fiber Bragg Grating Arrays in Pure Silica Suspended Core Fibers,'' M. Becker, Luís A. Fernandes, M. Rothhardt, S. Brückner, K. Schuster, J. Kobelke, O. Frazao, H. Bartelt, and P. V. S. Marques, IEEE Photonics Technology Letters, 21, 1453-1455, 2009,

    • Patents

  • ''Variable optical attenuator arrays,''
    D. Touahri, J. Philipson, C. Wagner, Luís A. Fernandes, and M. Adams, Patent: US 20240077678 A1, Mar 7, 2024
  • ''Techniques for reducing optical ghosts in a gratings-based optical spectrum analyzer (OSA),''
    D. Touahri, C. Wagner, Luís A. Fernandes, and J. Philipson, Patent: US 11821791 B1, Nov 21, 2023
  • ''Techniques for providing a swept wavelength (sw) measurement for acquiring polarization dependent loss (pdl) in a single scan,''
    Luís A. Fernandes, R. Adams, C. Wagner, J. Philipson, and E. Chan, Patent: US 20220390322 A1, Dec 08, 2022
  • ''Optical measurements with dynamic range and high speed,''
    C. Wagner, Luís A. Fernandes, and J. Philipson, Patent: US 11125617 B1, Sep 21, 2021
  • ''Polarization scrambler using a retardance element,''
    J. Philipson, C. Wagner, and Luís A. Fernandes, Patent: US 20200387015 A1 (US11526035B2), Dec 10, 2020
  • ''Glass ferrule coupling of in-line fiber taps and fiber cladding waveguides,''
    Luís A. Fernandes, O. Sezerman, G. Best, M. L. Ng, and F Baset, Patent: US 20190302373 A1, Oct 03, 2019
  • ''Method for the fabrication of optical waveguide devices in Photonic Crystal Fibers and in waveguides with hollow structures,''
    Luís A. Fernandes, O. Sezerman, G. Best, M. L. Ng, and S. Kane, Patent: US 10329196 B2, EP 3118660 A1, Jan 19, 2017
  • ''Reshaping of optical waveguides by refractive index modification,''
    J. R. Grenier, Luís A. Fernandes, and P. R. Herman, Patent: WO 2016123719 A1, Aug 11, 2016

    • Doctoral Thesis

    ''Birefringence and Bragg grating control in femtosecond laser written optical circuits'', Luís A. Fernandes, December 2012 [PDF PDF] [slideshare] [Repositório Aberto da Universidade do Porto]

    International conferences

  • ''Experiences and Learned Lessons from The IEEEXtreme Competition,'' Luís A. Fernandes, IEEE Sections Congress, 2021
  • ''Direct writing of fiber optic components in photonic crystal fibers and other specialty fibers,'' Luís A. Fernandes, Omur Sezerman, Garland Best, Mi Li Ng, Saidou Kane, Proc. SPIE 9740, 97400N, SPIE LASE: Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XVI, Photonics West (Oral presentation), 2016
  • ''Highly functional fiber cladding photonics: Real-time monitoring to control femtosecond laser writing of optical taps and filters,'' J. R. Grenier, Luís A. Fernandes, P. R. Herman, Oral presentation only 9355-33, SPIE LASE: Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XV, Photonics West, 2015
  • ''Writing polarization dependent and independent directional couplers in optical fiber with femtosecond lasers,'' J. R. Grenier, Luís A. Fernandes, P. R. Herman, Oral presentation only 8972-32, SPIE LASE: Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIV, Photonics West, 2014
  • ''Birefringence control in femtosecond laser written optical circuits,'' Luís A. Fernandes, J. R. Grenier, P. R. Herman, J. S. Aitchison, P. V. S. Marques, Oral presentation only RIA100-593, 8th Ibero American Optics Meeting / 11th Latin American Meeting on Optics, Lasers, and Applications, 2013
  • ''Birefringence tuning in fused silica waveguides by femtosecond laser-induced stress,'' Luís A. Fernandes, J. R. Grenier, P. R. Herman, J. S. Aitchison, P. V. S. Marques, Oral presentation only 8611-35, SPIE LASE: Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIII, Photonics West, 2013
  • ''Femtosecond laser fabrication of optical sensing circuits in the coreless optical fibers,'' J. R. Grenier, M. Haque, Luís A. Fernandes, K. Cheng, J. S. Aitchison, P. V. S. Marques, P. R. Herman, Oral presentation only 8611-30, SPIE LASE: Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIII, Photonics West, 2013
  • ''Femtosecond laser writing of lab-on-a-fiber: integrating interferometers and microfluidics,'' M. Haque, K. Lee, Luís A. Fernandes, J. R. Grenier, K. Cheng, P. R. Herman, Oral presentation only 8611-28, SPIE LASE: Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XIII, Photonics West, 2013
  • ''Femtosecond Direct Laser Writing of Fiber Cladding Photonic Devices,'' J. R. Grenier, Luís A. Fernandes, P. V. S. Marques, J. S. Aitchison, and P. R. Herman, Oral presentation only OPTICS-6-19-4, SPIE: Non-linear optics and photonic materials, Photonics North, 2012
  • ''Femtosecond laser writing of polarization devices for optical circuits in glass,'' Luís A. Fernandes, J. R. Grenier, P. R. Herman, J. S. Aitchison, and P. V. S. Marques, Proc. SPIE 8247, 82470M, SPIE LASE: Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XII, Photonics West (Oral presentation), 2012
  • ''Femtosecond laser fabrication of optical sensing devices in the cladding of optical fibers,'' J. R. Grenier, Luís A. Fernandes, P. V. S. Marques, J. S. Aitchison, and P. R. Herman, Oral presentation only 8247-33, SPIE LASE: Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XII, Photonics West, 2012
  • ''Femtosecond direct writing of lab-on-a-fiber optofluidic sensors,'' M. Haque, J. R. Grenier, S. Ho, Luís A. Fernandes, and P. R. Herman, Oral presentation only 8247-31, SPIE LASE: Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XII, Photonics West, 2012
  • ''Femtosecond laser direct fabrication of integrated optical wave plates in fused silica,'' Luís A. Fernandes, J. R. Grenier, J. H. Kim, P. R. Herman, J. Aitchison, and P. V. Marques, Oral presentation in CLEO:2011 - Laser Applications to Photonic Applications, paper CWO6, 2011
  • ''Optical Circuits in Fiber Cladding: Femtosecond laser-written Bragg Grating Waveguides,'' J. R. Grenier, Luís A. Fernandes, P. V. Marques, J. Aitchison, and P. R. Herman, Oral presentation in CLEO:2011 - Laser Applications to Photonic Applications, paper CMZ1, 2011
  • ''Integrated Temporal Fourier Transformer Based on Chirped Bragg Grating Waveguides,'' K. Dolgaleva, A. Malacarne, P. Tannouri, Luís A. Fernandes, J. R. Grenier, J. Aitchison, J. Azana, R. Morandotti, P. R. Herman, and P. V. Marques, Oral presentation in CLEO:2011 - Laser Applications to Photonic Applications, paper CThHH6, 2011
  • ''Femtosecond laser fabrication of birefringent directional couplers in fused silica,'' Luís A. Fernandes, J. R. Grenier, P. R. Herman, J. S. Aitchison, and P. V. S. Marques, Oral presentation only 7584-22, SPIE LASE: Laser Applications in Microelectronic and Optoelectronic Manufacturing XV, Photonics West, 2010 [Received Student Award for best oral presentations]
  • ''Flexible tailoring of femtosecond laser-written Bragg grating waveguides,'' J. R. Grenier, Luís A. Fernandes, M. Esfahani, J. S. Aitchison, P. V. S. Marques, and P. R. Herman, Oral presentation only 7591-17, SPIE MOEMS-MEMS: Advanced Fabrication Technologies for Micro/Nano Optics and Photonics III, Photonics West, 2010
  • ''Femtosecond Laser Writing of Phase-Shifted Bragg Grating Waveguides in Fused Silica,'' Luís A. Fernandes, J. R. Grenier, P. R. Herman, J. S. Aitchison, and P. V. S. Marques, Oral presentation in Femtosecond Laser Microfabrication, OSA Frontiers in Optics, paper LMTuC5, 2009
  • ''Temperature and strain characterization of Bragg gratings impressed with femtosecond laser radiation in suspended-silica-core fibers,'' Luís A. Fernandes, M. Becker, O. Frazao, M. Rothhardt, S. Brückner, K. Schuster, J. Kobelke, J. L. Santos, and P.V.S. Marques, Proc. SPIE 7386, 73861N, Photonics North (Oral presentation), 2009
  • ''Fiber Bragg grating inscription with DUV femtosecond exposure and two beam interference,'' M. Becker, J. Bergmann, S. Brückner, E. Lindner, M. Rothhardt, K. Schuster, J. Kobelke, S. Unger, H. Bartelt, Luís A. Fernandes, and P. V. S. Marques, Proc. SPIE 7386, 73862Y, Photonics North (Oral presentation), 2009,
  • ''Fabrication and test of an integrated optical sensor with high sensitivity and high dynamic range based on a Mach-Zehnder interferometric configuration,'' D. Alexandre, J. Viegas, Luís A. Fernandes, P. J. Moreira, A. Leite, J. L. Santos, and P. Marques, Proc. SPIE 6585, 65850L, Optical Sensing Technology and Applications, 2007

    • Local conferences and meetings

  • ''Femtosecond Laser Writing Of Polarization Devices For Optical Circuits In Glass,'' Luís A. Fernandes, J. R. Grenier, P. R. Herman, J. S. Aitchison, and P. V. S. Marques, Oral presentation in Connections 2012, University of Toronto ECE Graduate Symposium, May, 2012
  • ''Ultrafast Laser Fabrication of Optical Fiber Sensors,'' J. R. Grenier, Luís A. Fernandes, P. V. S. Marques, J. S. Aitchison, and P. R. Herman, Oral presentation in Connections 2012, University of Toronto ECE Graduate Symposium, May, 2012
  • ''Femtosecond laser direct writing of integrated polarization dependent devices,'' Luís A. Fernandes, J. R. Grenier, P. R. Herman, J. S. Aitchison, and P. V. S. Marques, Oral presentation in Connections 2011, University of Toronto ECE Graduate Symposium, May, 2011
  • ''Laser Fabrication of Lab-on-a-fiber devices,'' J. R. Grenier, Luís A. Fernandes, P. V. S. Marques, J. S. Aitchison, and P. R. Herman, Oral presentation in Connections 2011, University of Toronto ECE Graduate Symposium, May, 2011 [Received Best Presentation Award]
  • ''Escrita Directa Ponto-a-ponto de Redes de Bragg com Impulsos Laser Ultracurtos,'' Luís A. Fernandes, J. R. Grenier, P. R. Herman, J. S. Aitchison, and P. V. Marques, Oral presentation in Física 2010, Vila Real, Portugal, Setembro, 2010
  • ''Femtosecond Laser Fabrication of Birefringent Optical Devices,'' J. H. Kim, Luís A. Fernandes, J. R. Grenier, P. V. S. Marques, J. S. Aitchison, and P. R. Herman, University of Toronto Undergraduate Engineering Research Day, 2010 [Received Best Poster Award]
  • ''Femtosecond Laser Fabrication of Photonic Devices in Chalcogenide Glass,'' S. Zhang, J. R. Grenier, Luís A. Fernandes, and P. R. Herman, University of Toronto Undergraduate Engineering Research Day, 2010
  • ''Femtosecond direct-writing of Waveguides (WG) and Bragg Grating Waveguides (BGW) in fiber,'' H. Xu, J. R. Grenier, Luís A. Fernandes, and P. R. Herman, University of Toronto Undergraduate Engineering Research Day, 2010
  • ''Laser Fabrication of Optical Circuits,'' J. R. Grenier, Luís A. Fernandes, P. V. S. Marques, J. S. Aitchison, and P. R. Herman, Oral presentation in Connections 2010, University of Toronto ECE Graduate Symposium, May, 2010
  • ''Laser Direct Writing Unit for Rapid Prototyping of Integrated Optical Micro Devices,'' Daniel Alexandre, Luís A. Fernandes, P. Marques, and Askari Ghasempour, SEON 2008 - VI SYMPOSIUM ON ENABLING OPTICAL NETWORKS, Porto, Portugal, Junho, 2008
  • ''Fabricação de um sensor óptico integrado com alta sensibilidade e alta gama dinâmica baseado num interferómetro de Mach-Zehnder,'' Daniel Alexandre, Jaime Viegas, Luís A. Fernandes, Paulo Moreira, António Leite, José Luís Santos, and Paulo Marques, Física 2008 - 16ª Conferência Nacional de Física, Costa da Caparica, Portugal, 2008
  • ''Prototipagem rápida de dispositivos ópticos integrados por escrita directa a laser,'' D. Alexandre, Luís A. Fernandes, and P. Marques, Física 2008 - 16ª Conferência Nacional de Física, Costa da Caparica, Portugal, 2008

    • Book Chapters

  • ''Femtosecond Laser Inscription of Photonic and Optofluidic Devices in Fiber Cladding,'' J. R. Grenier, M. Haque, Luís A. Fernandes, K. K. C. Lee, P. R. Herman, in Planar Waveguides and other Confined Geometries, Springer Series in Optical Sciences, G. Marowsky, Ed. Springer New York, vol. 189, p. 67–110, 2015 (ISBN: 978-1-4939-1178-3)
  • ''Manual de Microfabricação, D2 - Montagem de microdispositivos,'' Ireneu Dias, Luís A. Fernandes, and Paulo Marques, Coordenação Científica: Ireneu Dias, 2008 (ISBN: 978 989 95964 3 6)