题目：Microwave Photonic Radars: What can Photonics bring to Radars?

时间：2024-07-01

地点：电院1-518A会议室

As the only method for all-weather and long-distance target detection and recognition, radar has been intensively studied since it was proposed, and is considered as an essential sensor for future intelligent society. In the past few decades, great efforts have been devoted to improving radar’s functionality, precision, and response time, of which the key is to generate, control, and process a wideband signal at a high speed. Thanks to the high frequency, large bandwidth, low loss transmission, and electromagnetic immunity provided by modern photonics, implementation of the radars in the optical domain can provide better performance in terms of resolution, coverage, and speed which may not be achievable using traditional, even state-of-the-art electronics. In this talk, I'll give an overview of the photonic technologies that are currently known to be attractive for radars. System architectures and their performance that may interest the radar society are emphasized. Emerging technologies in this area and possible future research directions are discussed.详情>>

题目：Computational fiber imaging using digital holography and deep learning

时间：2024-06-24

地点：电院群楼1号楼418A

Light has the potential to recognize the development of diseases, to prevent them or to heal them early and gently. Traditionally, however, lens-based imaging results in bulky systems. We outline the 3D imaging with needle-sized, lensless multicore fiber endoscopes using holography. Deep learning is promising for label-free cancer
diagnostics in neurosurgery using minimally invasive endoscopy. Besides biomedicine, data transmission with fiber networks will be highlighted. Multimode fibers show promise for improving data rates in optical communications but come with the challenge of compensating for scattering effects. Physics-informed deep learning
enables to correct the scattering, resulting in advancing security and data rate. Fiber imaging promises advances in various fields such as information, biomedicine and environmental protection.详情>>

题目：Can we perform Coherent Detection without DSP in Datacenter Interconnects?

时间：2024-04-01

地点：电院5号楼214会议室

Recently we have witnessed phenomenal demand for ever increasing bandwidth in datacenter networks driven by emergence of generative AI such as ChatGPT and Sora. There is consensus that coherent communication will gradually penetrate into shorter or shorter reaches in datacenter networks. In this talk, we propose the concept of quasi frequency-synchronous optical network (FSON) architecture in order to simplify coherent optical detection. We also will present a novel optical carrier phase recovery scheme based on optical phase-locked loop. We then will showcase the world-first polarization and phase demultiplexing of DP-QPSK signals in optical domain without employing electronic DSP. Our proposed DSP-free coherent detection provides an attractive solution for next generation datacenter transport with low cost and power consumption.详情>>

题目：Structural Health Monitoring of Smart Composite Fuselage: A Building Block Approach

时间：2023-06-01

地点：电院5号楼214会议室

In this talk, achievements but also challenges of application of SHM to a composite fuselage panel as part of the CleanSky2 core-partnership SHERLOC will be demonstrated. The SHM developments in SHERLOC has been included from the design phase of components, tailored to various manufacturing processes. Following the building block philosophy, the down selection and verification of various SHM technologies and methodologies have been demonstrated under the operational and environmental condition of a regional aircraft, demonstrating the survivability of the SHM components on board of the aircraft, as well as the reliability of the diagnosis. 详情>>