高峰论坛日程完整版发布 | 六大国际顶级学者共话光电前沿技术
2018年11 月 14 日 9:40 — 12:30
演讲时间：10:00 – 10:30
演讲主题：VCSEL Array - Catalyzing 3D Sensing
演讲摘要：Vertical cavity surface emitting lasers (VCSELs) have long been predicted as low-cost enabling laser sources for many applications including optical communications, sensing and imaging. Traditional VCSELs comprises a quantum well active region sandwiched between two highly reflective mirrors, all epitaxially grown on a GaAs or InP substrate. With the laser emitting in the surface normal direction, VCSELs enjoy the advantages offered by LEDs in wafer scale processing and easy of packaging. In contrast to LEDs, VCSEL emits well collimated light with a narrow divergence and a narrow spectrum, which make them idea for optical imaging and sensing. The mirrors are typically distributed Bragg reflectors (DBRs) with many tens layers of epitaxy layers with alternating refractive indecies. Recently we reported the use of a single layer high index contrast near-wavelength gratings (HCG) to replace the hundred-layered DBR in a VCSEL structure. In this talk, I will discuss inventions and advances in VCSELs that have led to recent global deployment of commercial applications including 3D sensing, LIDAR and optical coherent tomography applications. I will also discuss future prospects for advanced applications.
Leo hans Lehmann
演讲时间：10:30 – 11:00
演讲主题：“ITU-Study Group 13, Pioneering Telecommunication Networks from POTS until Future Networks beyond 5G”.
演讲摘要：Study Group 13 (SG13) is one of the groups of the Standardization sector of the International Telecommunication Union (ITU) which already exist for many years. Its lead mandate is related to Future Networks including IMT2020 5G, Cloud Computing and Trusted Network Infrastructures (TNI). SG13 studies and deliveries also include important recommendations related to data aware and data driven networking, big data and the support of machine learning based means for future networks including 5G. While IMT2020/5G systems becomes now more and more deployable, SG13 has already started to consider use cases, requirements and architectural aspects of future networks beyond 5G by a dedicated subgroup, the Focus Group on Technologies for Network 2030. This presentation starts with a short introduction into mandate and structure of SG13 followed by a quick look back to the groups Next Generation Network history. It gives an overview on already delivered standards related to its lead responsibilities, in particular IMT2020/5G, cloud Computing and TNI. Furthermore the presentation will describe some examples of currently ongoing work, including horizontal/ vertical slicing, fixed/ mobile convergence and data driven networking.
演讲时间：11:00 – 11:30
演讲主题：Synergistic design of Silicon modulators and drivers
演讲摘要: Integration of photonics and electronics is one of the key subjects for the development of silicon photonics. We believe this approach should include the synergistic design concept, in which the photonics and electronics devices should be closely co-designed. In this paper the co-design of depletion silicon Mach-Zehnder modulator, and the corresponding CMOS driver is discussed, including changing the modulator geometry to facilitate monitoring of the electrical signal quality reaching the modulator, and adjustment of the system operating parameters accordingly.
演讲时间：11:30 – 12:00
演讲主题：Light for Advanced Manufacturing
演讲摘要：Light plays an important role in advanced manufacturing. Being as fast as light, it provides the maximum speed allowing for rapid optical sensing and data commination. Being as accurate as light, it offers many reliable approaches to fabricate current digital devices in micro- even Nano-scale. Being as colorful as light, it serves as the basis for optical imaging and materials real-time characterization. The unique properties of light are achieving the varieties of innovations and bringing about plenty of new opportunities. In this talk, the beauty of light will be highlighted in both the scopes of high-power applications, such as laser micro-processing and Nano-fabrication for thin silicon wafer processing, femtosecond laser precision engineering of man-made bio-skins and high speed micro-hole drilling, lotus-leave-like super-hydrophobic structures and metamaterials fabrication; as well as low-power applications, including optical Nano-imaging and laser diagnostics of cracks inside steel structures and gas leakage detection. Laser cleaning of surface contaminations, laser color marking of metal surfaces, portable SERS Raman spectroscope, and optical microsphere nanoscope being developed in our Optical Science and Engineering Centre in NUS will be case studied to emphasize the importance of technology commercialization for new industries.
演讲时间：12:00 – 12:30
演讲主题：Nanophotonics for a Green Internet
演讲摘要：The energy required to transmit information as encoded optical and electrical data bits within and between electronic and photonic integrated circuits, within and between computer servers, within and between data centers, and ultimately nearly instantly across the earth from any one point to another clearly must be minimized. This energy spans between typically tens of picojoules-per-bit to well over tens of millijoules-per-bit for the intercontinental distances. We seek to meet the exploding demand for information within the terrestrial resources available but more importantly as a common-sense measure to reduce costs and to become stewards of a perpetual Green Internet. The concept of a Green Internet implies a collection of highly energy-efficient, independent, and ubiquitous information systems operating with minimal impact on the environment via sustainable energy sources. A key enabling optical component for the Green Internet is the vertical-cavity surface-emitting laser (VCSEL). Our research on energy-efficient VCSELs for application as light-sources for optical interconnects and optical fiber data communications between 850 and 980 nm is reviewed. We present VCSEL designs, design principles, and operating methods that enable data communication systems capable of error-free operation at bit rates exceeding 50 gigabits-per-second with energy efficiencies approaching 100 femtojoules-per-bit. Yet unpublished results for 200+ Gbit/s optical interconnects based on wavelength multiplexing are presented.