A5082029334- Optical Network Technologies
- Advanced Photonic Communication Systems
- Advanced Optical Network Technologies
- PAPR reduction in OFDM
- Photonic and Optical Devices
- Cellular Automata and Applications
- Advanced Fiber Optic Sensors
- Semiconductor Lasers and Optical Devices
- High voltage insulation and dielectric phenomena
- Thermal Analysis in Power Transmission
- Neutropenia and Cancer Infections
- Near-Field Optical Microscopy
- Elite Sociology and Global Capitalism
- Nonlinear Dynamics and Pattern Formation
- Coding theory and cryptography
- Chaos-based Image/Signal Encryption
- Smart Grid Security and Resilience
- Electrical Fault Detection and Protection
- Error Correcting Code Techniques
- Advanced Optical Sensing Technologies
- Bacterial Identification and Susceptibility Testing
- Streptococcal Infections and Treatments
- High-Voltage Power Transmission Systems
- Plasmonic and Surface Plasmon Research
- graph theory and CDMA systems
Bangor University
2020-2024
Xi'an Jiaotong University
2024
Southern Medical University
2023
XiO Photonics (Netherlands)
2021
Chongqing University of Technology
2021
Brixham Community Hospital
2021
Ciena (Canada)
2021
Mie resonances in dielectric particles play a crucial role light–matter interaction, characterized by strong multipolar optical responses and low dissipative losses. This study presents an innovative methodology for precise discrimination of the size quantity deep-subwavelength microspheres leveraging Fano coupled magnetic-dipole (MD) modes CaTiO 3 -ceramic-particle triplet. The multifaceted characteristics MD exhibit high sensitivity specificity detecting minute changes ambient environment....
Point-to-multipoint (P2MP) transceivers offer a promising solution to transform present point-to-point optical access networks into scalable and flexible P2MP capable of dynamically meeting, in cost-effective high energy consumption efficiency manner, the requirements associated with 5G-Advance beyond networks, including large signal transmission capacity, fast dense connection, network flexibility/adaptability low latency. However, previously reported based on either coherent XR optics or...
Intermittent dynamics switching on the route to chaos in a discrete-mode laser with long time-delayed feedback is experimentally and numerically studied by analyzing time series, power spectra, phase portraits. The results show two types of switching: one or multiple times regular intermittent between stable state square-wave envelope period-one oscillation within round time, irregular quasi-periodic multi-states higher ratio bias currents. relationship duty cycle has been analyzed. map...
In PON-based mobile fronthauls, direct inter-ONU communications without passing end-user traffic to the OLT offer a promising solution for fulfilling stringent latency and bandwidth requirements of 5G beyond networks. this paper, with slight modifications PON remote node, concurrent upstream communication technique is proposed experimentally demonstrated in 101.6Gbit/s multipoint-to-point hybrid SSB OFDM digital filter multiple access (DFMA) IMDD PONs over 25km SSMFs. Multiple gapless...
Hybrid OFDM-digital filter multiple access (OFDM-DFMA) PONs exploit software configurable digital shaping filters in ONUs to multiplex gapless OFDM channels at different radio frequencies and utilize a single FFT operation-based pipelined DSP procedure the OLT simultaneously de-multiplex/demodulate all signals from various without requiring any matching filters. In this letter, aggregated raw 30Gbit/s over 25km multipointto-point upstream signal transmissions of IMDD OFDM-DFMA are...
Known hybrid orthogonal frequency division multiplexing-digital filter multiple access (OFDM-DFMA) PONs show promise of seamless and cost-effective convergence optical mobile networks for 5G beyond. This paper reports, the first time, a new OFDM-DFMA PON based on intensity modulation direct detection (IMDD), obtained by modifying digital signal processing (DSP) algorithms embedded in both OLT ONUs. The proposed allows two spectrally overlapped sub-bands to occupy each individual...
Rectangular orthogonal digital filter banks (ODFBs) based on square-root-raised-cosine (SRRC) functions are widely utilised to realise flexible and elastic multi-channel aggregations for fixed mobile networks. However, long lengths required minimize filtering-associated signal distortions. In this paper, the extended Gaussian function (EGF), a novel rectangular ODFB with excellent robustness against short length-induced truncation effect is proposed. Optimum parameters of EGF-based ODFBs...
A novel digital signal processing (DSP)-based scheme for physical layer security in coherent optical communication systems is proposed and numerically investigated. The encryption accomplished by two dispersive elements one phase modulator (PM) driven a DSP-generated key, whilst decryption uses similar components but with inverted dispersion values keys. critical aspect of the DSP-based that keys, driving PMs to hide/recover data signals, must be highly unpredictable noise-like, thus...
Driven by a large number of emerging diversified services, in the 5G and beyond era, concurrent direct inter-ONU upstream communications inside PON-based mobile access network are highly desirable to provide dynamic, ultra-dense, fast ONU-to-ONU (without involving an OLT) ONU-to-OLT connections. To cost-effectively deliver dynamic low latency communications, this paper proposes experimentally demonstrates novel 27 km, >62.47 Gbit/s IMDD PON. For supporting between ONUs, advanced passive...
DSP-enabled multi-channel aggregation techniques are promising for cost-effectively improving the flexibility, adaptability and elasticity of fronthaul transport networks. By utilizing orthogonal digital filtering in IMDD transmission systems, two matching filter (MF)-free respectively based on SSB OFDM DSB have been reported; however, (DSB) technique has a drawback relatively high DSP complexity (reduced to physical layer system characteristics). To effectively overcome these drawbacks...
Matching filter (MF)-free digital multiplexed (DFM) single sideband (SSB) OFDM intensity modulation and direct detection (IMDD) dual-channel transmissions of 51.25Gbit/s over 25km SSMFs are experimentally demonstrated. It is shown that both transmission system impairments characteristic variations can only lead to <1dB performance degradations. Compared with the MF-free DFM-based double (DSB) technique, SSB technique has a similar receiver DSP complexity provides almost twice maximum signal...
Concurrent adaptive inter-ONU and upstream communications are experimentally demonstrated in 25km@101.6Gbit/s IMDD hybrid SSB OFDM-DFMA PONs, offering a promising candidate to meet 5G beyond networks’ requirements terms of latency, bitrate connection density.
Aggregated 16.6Gbit/s@26km upstream hybrid OFDM-DFMA IMDD PONs utilizing low-cost optical/electrical devices are demonstrated, for the first time, which significantly improve performance robustness and differential ONU optical launch power dynamic range, compared to published work. © 2020 The Author(s) OCIS code: (060.0060) Fiber optics communications; (060.4250) Networks; 1. Introduction To realize seamless convergence of existing metro/access networks mobile front-haul/mid- haul/back-haul...
A novel transmission technique—namely, a DFT-spread spectrally overlapped hybrid OFDM–digital filter multiple access (DFMA) PON based on intensity modulation and direct detection (IMDD)—is here proposed by employing the discrete Fourier transform (DFT)-spread technique in each optical network unit (ONU) line terminal (OLT). Detailed numerical simulations are carried out to identify optimal ONU transceiver parameters explore their maximum achievable upstream performances IMDD systems. The...
Abstract Background . To identify the clinical implications, risk factors and predictors with mixed candida/bacterial bloodstream infection (BSI) of cadiovascular patients in Guangdong Provincial People’s Hospital, Guangzhou, Guangdong, China (a third-class hospital a strong focus on cardiovascular disease). We conducted retrospective case-control study complicated candidaemia over past 10-year period to implications candidia/bacterial BSIs vs. monobacterial candidiasis. Method searched all...
Using cascaded IFFT/FFT-based multi-channel aggregation/de-aggregation and orthogonal digital filtering, P2MP flexible transceivers operating in an 'add-as-you-grow' mode offering additional physical-layer security are proposed experimentally demonstrated upstream 55.3Gbps@25km IMDD PONs.
Point-to-multipoint flexible optical transceiver-enabled concurrent direct inter-ONU and upstream communications are experimentally demonstrated in >62.47Gbit/s@27km IMDD PONs. The PONs flexibly adaptively establish simultaneous ONU-to-ONU ONU-to-OL T communication connections according to end-user's dynamic requirements.
A structured sampling scheme for fiber optical sensing in the digital domain is proposed and demonstrated experimentally, which improves sensitivity by 4dB without any hardware modification compared with conventional pulse-based system.