{"id":5383,"date":"2026-09-02T11:28:36","date_gmt":"2026-09-02T11:28:36","guid":{"rendered":"https:\/\/cognitionconferences.com\/optics\/?post_type=speaker&p=5383"},"modified":"2026-09-02T11:28:36","modified_gmt":"2026-09-02T11:28:36","slug":"mario-f-s-ferreira","status":"publish","type":"speaker","link":"https:\/\/cognitionconferences.com\/optics\/speaker\/mario-f-s-ferreira\/","title":{"rendered":"M\u00e1rio F. S. Ferreira"},"content":{"rendered":"

Abstract<\/strong><\/p>\n

Nonlinear effects in optical fibers impose different limitations on the communications link, and an understanding of such effects is almost a prerequisite for actual lightwave-system designers. On the other hand, they offer a variety of possibilities for all-optical signal processing, amplification and regeneration. Using conventional optical fibers for these applications, a length of several kilometres is usually required due to their relatively small nonlinear parameter (). Such long fibers pose some practical limitations, concerned namely with the size and stability of the system. However, the required fiber length can be significantly reduced using several kinds of specialty optical fibers. \u00a0For example, it is reduced to about 1km using highly nonlinear silica fibers with a smaller effective mode area, and hence, a larger nonlinear parameter (). A further reduction in fiber length by one order of magnitude has been achieved in recent years using nanowires and microstructured optical fibers with an extremely small effective mode area and significantly enhanced nonlinear characteristics.\u00a0 Another main advance was the production of highly nonlinear fibers using materials with a nonlinear refractive index higher than that of the silica glass, namely lead silicate, tellurite, bismuth glasses and chalcogenide glasses. Using such highly nonlinear optical fibers, the required fiber length for all-optical signal processing can be dramatically reduced to the order of centimetres. This talk provides an overview of such kind of specialty optical fibers, as well as of some novel dispersive and nonlinear phenomena exhibited by them.<\/p>\n

Biography<\/strong><\/p>\n

M\u00e1rio F. S. Ferreira is a Professor at the Physics Department of Aveiro University, Portugal. His research interests have been concerned with the modelling and characterization of multi-section semiconductor lasers for coherent systems, quantum well lasers, optical fiber amplifiers and lasers, optical sensors, soliton propagation, polarization and nonlinear effects in optical fibers. He has been the leader of the Optics and Optoelectronics Group of the I3N \u2013 Institute of Nanostructures, Nanomodelling and Nanofabrication. He has written about 400 scientific journal and conference publications, and ten books, namely \u201cOptical Fiber Lasers – Recent Advances and Applications\u201d (Springer Nature, 2026), and \u201cLasers Optics and Photonics\u201d (Oxford University Press, 2026). He is a Fellow and a Travelling Lecturer of both OPTICA (Optical Society of America) and SPIE – The International Society for Optics and Photonics.<\/p>\n","protected":false},"featured_media":5385,"template":"","meta":{"_acf_changed":false},"schedule":[5],"speaker-category":[6],"class_list":["post-5383","speaker","type-speaker","status-publish","has-post-thumbnail","hentry","schedule-day-1","speaker-category-speakers"],"acf":[],"yoast_head":"\nM\u00e1rio F. S. Ferreira | University of Aveiro | Portugal<\/title>\n<meta name=\"description\" content=\"M\u00e1rio F. S. Ferreira is a Professor at the Physics Department of Aveiro University, Portugal. His research interests have been concerned with the modelling and characterization of multi-section semiconductor lasers for coherent systems, quantum well lasers, optical fiber amplifiers and lasers, optical sensors, soliton propagation, polarization and nonlinear effects in optical fibers. He has been the leader of the Optics and Optoelectronics Group of the I3N \u2013 Institute of Nanostructures, Nanomodelling and Nanofabrication. He has written about 400 scientific journal and conference publications, and ten books, namely \u201cOptical Fiber Lasers - Recent Advances and Applications\u201d (Springer Nature, 2026), and \u201cLasers Optics and Photonics\u201d (Oxford University Press, 2026). He is a Fellow and a Travelling Lecturer of both OPTICA (Optical Society of America) and SPIE - The International Society for Optics and Photonics.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cognitionconferences.com\/optics\/speaker\/mario-f-s-ferreira\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M\u00e1rio F. S. Ferreira | University of Aveiro | Portugal\" \/>\n<meta property=\"og:description\" content=\"M\u00e1rio F. S. Ferreira is a Professor at the Physics Department of Aveiro University, Portugal. His research interests have been concerned with the modelling and characterization of multi-section semiconductor lasers for coherent systems, quantum well lasers, optical fiber amplifiers and lasers, optical sensors, soliton propagation, polarization and nonlinear effects in optical fibers. He has been the leader of the Optics and Optoelectronics Group of the I3N \u2013 Institute of Nanostructures, Nanomodelling and Nanofabrication. He has written about 400 scientific journal and conference publications, and ten books, namely \u201cOptical Fiber Lasers - Recent Advances and Applications\u201d (Springer Nature, 2026), and \u201cLasers Optics and Photonics\u201d (Oxford University Press, 2026). 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