BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Memento EPFL// BEGIN:VEVENT SUMMARY:Advances in fibre-based & integrated photonic systems DTSTART:20251003T150000 DTEND:20251003T170000 DTSTAMP:20261001T034019Z UID:8f5120393c0d9f61296a55a2139c26f203959f469bdf0aa1ea17588d CATEGORIES:Conferences - Seminars DESCRIPTION:Assoc. Prof. Qian Li (School of Electronic and Computer Engine ering\, Shenzhen Graduate School\, China)\; Assoc. Prof. Hongyan Fu (Tsing hua Shenzhen International Graduate School (SIGS)\, Tsinghua University\, China)\nAbstract\nHigh-performance ultrafast mode-locked fiber lasers with strong environmental stability remain a central focus of both academia an d industry\, driven by their broad spectrum of applications. This talk pre sents recent advances in all-polarization-maintaining (all-PM) mode-locked fiber lasers and emphasizes strategies for noise suppression. We demonstr ate a novel mode-locking scheme implemented in all-PM linear-cavity config urations that simultaneously delivers ~100 fs pulses\, ultralow-noise oper ation with 0.01% integrated relative intensity noise and 50 fs timing jitt er\, and long-term environmental stability with 0.1% RMS power fluctuation . The presentation systematically analyzes noise generation mechanisms\, i ntroduces advanced diagnostic methodologies\, and proposes effective suppr ession techniques. Our findings reveal that all-PM linear-cavity architect ures incorporating specialized “optical cube” designs can significantl y suppress multiple noise sources and markedly improve overall laser perfo rmance. These results establish a robust technological foundation for next -generation compact\, high-stability ultrafast laser systems\, with promis ing applications in optical frequency combs\, quantum information processi ng\, and precision metrology.\n\nWhile fiber-based systems excel in noise control and stability for high-precision applications\, a parallel revolut ion is underway in the domain of integrated photonic systems—spearheaded by vertical cavity surface emitting lasers (VCSELs). Recent advancements in VCSELs have revolutionized the fields of optical communications and sen sing\, leading to breakthroughs in short-reach high-speed data transmissio n and precise 3D sensing technologies. These innovations\, primarily drive n by tunable VCSELs have paved the way for highly integrated systems in bo th commercial and industrial applications. The talk collectively highlight s the diverse applications and technological advancements enabled by VCSEL s across various optical communication and sensing systems. This talk expl ores the implementation of VCSELs in enhancing data transmission rates\, i mproving beam-steering capabilities\, and sensing accuracy in systems rang ing from indoor wireless communications and LiDAR to device-to-device and Internet of Things (IoT) networks. Studies demonstrate how VCSEL technolog y contributes to increasing the efficiency\, resolution\, and reliability of optical systems. This talk explains why VCSEL technology is becoming a cornerstone for future developments in short-reach high-speed communicatio n and precise optical sensing.\n\nBiography\nH. Y. Fu is currently a tenur ed-associate professor\, deputy director of Research Office\, and director of Nano-fabrication Platform\, Tsinghua Shenzhen International Graduate S chool\, Tsinghua University\, Shenzhen\, China. He received the B.S. degre e in electronic and information engineering from Zhejiang University and t he M.S. degree in electrical engineering with specialty in photonics from Royal Institute of Technology (KTH)\, Sweden\, and the Ph.D. degree from t he Department of Electrical Engineering from Hong Kong Polytechnic Univers ity. His research focuses on integrated photonics and its related applicat ions in communications and sensing\, including optical wireless communicat ion and LiDAR. From 2005 to 2010\, he was a research assistant and then re search associate with Photonic Research Center\, the Hong Kong Polytechnic University. From 2010 to 2017\, Dr. Fu was a founding member and leading the advanced optic communications research at Central Research Institute\, Huawei. He was the project manager of All-Optical Networks (AON)\, which was evolved to a company-wide flagship research project that covers whole aspects of next generation optical communication technologies to guarantee Huawei’s leading position. He is a senior member of IEEE\, Optica and l ife member of SPIE. He is the founding advisors of Optica/IEEE Photonics S ociety/SPIE Student Chapters at Tsinghua SIGS\, Tsinghua University. He se rves as the associate editor of Frontiers in Photonics and reviewers for N ature\, Science\, etc. He has authored/coauthored over 350 journal or conf erence papers\, 3 book chapters\, over 80 granted/pending China /Europe/Ja pan/ US patents.\n\nQian Li is currently a tenured-associate professor\, t he vice dean of the School of Electronic and Computer Engineering (ECE)\, Peking University Shenzhen Graduate School. She received the Bachelor degr ee from Zhejiang University\, Hangzhou\, China\, in 2003\, the Master degr ee from the Royal Institute of Technology (KTH)\, Stockholm\, Sweden\, in 2005\, and the Ph.D. degree from the Hong Kong Polytechnic University\, Ho ng Kong\, in 2009. After graduation she was a Visiting Scholar at the Univ ersity of Washington\, Seattle and Postdoctoral Fellow at the Hong Kong Po lytechnic University. In 2012 she joined School of Electronic and Computer Engineering (ECE) in Peking University as an Assistant professor. Since 2 013 she is Associate Professor at ECE. Her research interests include ultr afast optics\, nonlinear optics and integrated optics. Dr. Li is senior me mbers of Institute of Electrical and Electronics Engineers (IEEE) and sen ior member of Optica. From March 2017 to April 2019\, she is Vice Chair of IEEE ED/SSC Beijing Section (Shenzhen) Chapter and Chair for EDS. From 20 15 she is an advisor of Optica Student Chapter in Peking University Shenzh en Graduate School. From 2019 she is an advisor of Peking University Shenz hen Graduate School IEEE Photonics Society Student Branch Chapter. Dr. Li has published over 160 SCI/EI-indexed papers\, and most of them are in wel l-known journals and conferences\, including Nature Communications\, Laser & Photonics Reviews\, Journal of Lightwave Technology\, Optics Letters\, Optics Express\, Photonics Research. In addition\, Dr. Li has co-authored an invited technical review paper in Nature\, 2 book chapters and 3 review papers. LOCATION:MXF 1 https://plan.epfl.ch/?room==MXF%201 STATUS:CONFIRMED END:VEVENT END:VCALENDAR