Mário F. S. Ferreira graduated in Physics from the University of Porto, Portugal, and received the Ph.D. degree in Physics in 1992 from the University of Aveiro, Portugal, where he is now a Professor at the Physics Department. Between 1990 and 1991 he was at the University of Essex, UK, performing experimental work on external cavity semiconductor lasers and nonlinear optical fiber amplifiers. 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, soliton propagation, polarization and nonlinear effects in optical fibers. He has written about 400 scientific journal and conference publications, and several books, namely: “Optics and Photonics (Lidel, 2003, in Portuguese), “Topics of Mathematical Physics (Editora Ciência Moderna, 2018, Brazil, in Portuguese), “Optical Fibers: Technology, Communications and recent Advances (Ed., NOVA Science Publishers, 2017), “Advances in Optoelectronic Technology and Industry Development (CRC Press, 2019), “Nonlinear Effects in Optical Fibers (John Wiley & Sons, OSA, 2011), “Optical Signal Processing in Highly Nonlinear Fibers (CRC Press, 2020), “Optical Fiber Technology and Applications – Recent Advances (IOP Publishing, 2021), “Solitons in Optical Fiber Systems (John Wiley & Sons, 2022), and “Dissipative Optical Solitons (Springer, 2022). He was the Guest Editor of five Special Issues of “Fiber and Integrated Optics (Taylor & Francis): “Fiber Optics in Portugal (2005), “Nonlinear Fiber Optics (2015), “Optical Fiber Sources and Amplifiers (2020) and “Quantum Communications (2020), a joint Special Issue of “Optics Express and “Applied Optics (OSA) on “Optical Sensors and Sensing 2019, and two Special Issues of “Fibers (MDPI) on “Optical Fiber Communications and “Specialty Optical Fibers – Material, Fabrication and Applications (2022), and and a Special Issue of “Fibers (MDPI) on “Optical Fiber Communications (2020). He is Member of IEEE, a Senior Member and a Travelling Lecturer of both OPTICA (Optical Society of America) and SPIE - The International Society for Optics and Photonics, He served in various committees of OSA and of SPIE, as well as in the organizing and scientific committees of various international conferences. Actually, he serves also as an Associate Editor or as an Advisor Board Member of several international journals in the area of optics and photonics. Mukul Chandra Paul received his Ph.D. degree from Jadavpur University, Kolkata, India in 2003. Presently, he is working as chief scientist at fiber optics and photonics division and heading Instrumentation and Information Technology Division (IITD), Central Glass and Ceramic Research Institute, Kolkata, India. He is author or co-author of more than 300 peer-reviewed journal papers along with 10 book chapters in the field of specialty optical fibers and holding seven US patents on fabrication of rare-earth doped ?bers. He also edited 2 Books on Fiber Laser. He also made major scientific contributions through International collaborative research work with various countries such as Malaysia, China, Taiwan, UK, France, Russia, Vietnam, Portugal etc. His research activities have been awarded with the BOYSCAST Fellowship Award from DST (2003), Ministry of Science ,Technology and Innovation (MOSTI) award by Federal Government Administrative Centre, Malaysia (2010), IEEE Photonic Distinguished Lecture Award by Multimedia University, Malaysia (2011), CSIR Technology Award (2012), DST-UKIERI Collaborative Research Award (2013), CSIR Technology Award for Innovation (2015), Indo-Russian (RFBR) Collaborative Research Grant Award (2016), Indo-Portugal (FCT) Collaborative Research Grant Award (2017), Senior Visiting Scientist award by National Taiwan University of Technology (NTUT), Taiwan(2020) , CK Somany Award for Innovation and Technology (2020) by All India Glass Manufacturers’ Federation (AIGMF), Adjunct Professor at Airlangga University, Indonesia (2021) etc. He is a member of OSA, IEEE and life member of MRSI and Indian Ceramic Society. 4 Ph.D. and 7 M.Sc. research works were directed by him. His current research interests include various novel material composition based specialty optical fiber development for continuous wave and pulsed fiber lasers at ~1.0 and 1.5 microns, high power optical amplifiers, fiber based saturable absorber and Broad-band supercontinuum sources.