A5013613380- Optical Network Technologies
- Advanced Photonic Communication Systems
- Photonic and Optical Devices
- Advanced Optical Network Technologies
- Semiconductor Lasers and Optical Devices
- Optical Wireless Communication Technologies
- PAPR reduction in OFDM
- Advanced Fiber Laser Technologies
- Millimeter-Wave Propagation and Modeling
- Radio Frequency Integrated Circuit Design
- Terahertz technology and applications
- Cognitive Radio Networks and Spectrum Sensing
- Cultural Heritage Materials Analysis
- Wireless Communication Networks Research
- Conservation Techniques and Studies
- Blind Source Separation Techniques
- Dye analysis and toxicity
- Photonic Crystal and Fiber Optics
- Distributed Sensor Networks and Detection Algorithms
- Power Line Communications and Noise
- Enzyme Structure and Function
- Cancer, Hypoxia, and Metabolism
- Microbial Community Ecology and Physiology
- Fatigue and fracture mechanics
- Vehicle Routing Optimization Methods
Purple Mountain Laboratories
2022-2025
Fudan University
2020-2024
Southeast University
2024
Yellow River Institute of Hydraulic Research
2011-2023
Shanghai Innovative Research Center of Traditional Chinese Medicine
2022-2023
State Key Laboratory of ASIC and System
2020-2023
Kunming University of Science and Technology
2023
Guilin University of Technology
2023
Zhejiang University of Technology
2023
Hunan University
2023
We provided a feasible solution for 800-Gb/s per carrier long-distance wavelength division multiplexing (WDM) coherent optical fibre transmission based on offline DSP. experimentally demonstrate 5-carrier 125-GHz-spacing WDM achieving 2000-km distance and net bit rate carrier. utilized 100-Gbaud truncated probabilistically shaped (TPS) polarization-multiplexed 64QAM format in this work. In terms of advanced components, the high-speed digital-to-analog converter with 35-GHz 3 dB-bandwidth...
We present a low-cost intensity-modulated direct detection (IM/DD) system for the transmission of high-order QAM signals at millimeter-wave (MMW) band 87 GHz. The uses photon-assisted MMW generation techniques to transmit modulated and receive through envelope detection. Discrete multi-tone (DMT) up 8192QAM are into one-bit quantized on/off keying (OOK) signal with delta-sigma modulation (DSM) avoid detector saturation effects reduce nonlinear noise interference. Additionally, multi-level...
Terahertz band (0.1 to 10 THz) with high carrier frequency and large available bandwidth has become a promising candidate meet the 100 Gbit/s or even 1 Tbit/s data rate required by future six-generation (6G) mobile communication networks. Compared all-electrical methods generate terahertz signals, photon-assisted technology can break bottleneck of limit electronics devices, signal frequency, bandwidth, flexible tunability easy integration capacity fiber link. In this paper, we introduce...
Integrating sensing function is becoming a key feature in the sixth generation (6G) radio access network. In this paper, we proposed and experimentally demonstrated novel method that integrates high-resolution radar long-distance communication terahertz (THz) band. The THz linear frequency modulation (LFM) signals were simultaneously generated with aid of photonics technology. To support communication, pair special lenses was utilized. A net rate 38.1 Gbit/s achieved after 50 m wireless...
The photonics-based technology has the advantages of wide bandwidth in millimeter wave (mm-wave) communication and radar sensing systems. In present work, we propose a novel joint functions system based on photonics at W-band. proposed system, broadband linear frequency modulated (LFM) signal high-speed M-quadrature amplitude modulation (MQAM) are simultaneously obtained by heterodyning two free-running external cavity lasers (ECLs). Based this rate 78 Gbit/s with 5-GHz is achieved. This...
We propose and experimentally demonstrate a real-time fiber-THz-fiber 2 × multiple-input multiple-output (MIMO) seamless integration system at 340–510 GHz using commercial digital coherent optics (DCO) modules for baseband signals processing, which realizes record net rate of 103.125 Gb/s dual polarization quadrature-phase-shift-keying (DP-QPSK) delivery over two spans 20 km wireline single-mode fiber-link 3 m wireless MIMO link without THz power amplifier under 15% soft-decision...
We proposed and established a large-capacity, long-distance wireless millimeter-wave (mm-wave) signal delivery system at W-band based on photonics-aided mm-wave generation technology, polarization-division-multiplexing (PDM), advanced devices. demonstrated the transmission of 10-Gbaud PDM-QPSK, PDM-16QAM, PDM-PS-64QAM signals in up to 4.6-km, respectively. The multiple-input multiple-output (MIMO) Volterra equalizer (VE) is employed during Rx offline digital processing (DSP) compensate for...
In this article, we have experimentally demonstrated a fiber-wireless-integration <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$D$ </tex-math></inline-formula> -band (110–170 GHz) transmission system. To extend the wireless distance while maintaining bit rate as high possible, designed high-gain lens horn antenna modules consisting of pair dielectric plano-convex lenses and antennas for long-haul links....
Terahertz (THz) photonics technique can break through the bandwidth limitation of electronic mixing method and be seamless integrated with optical access networks, which has bright prospects in future 6G broadband communication. However, due to bottleneck photoelectric conversion efficiency uni-travelling photodiode (UTC-PD), power generated THz-wave signal is usually only microwatt level, wireless transmission distance short. In this paper, we summarize key techniques use extend range for...
As the mobile communication evolves from sub-6GHz to millimeter wave (MMW) frequency bands, demand for high-speed wireless transmission rates exceeding hundreds of gigabits per second is becoming more and prominent. It one important cornerstones supporting numerous emerging bandwidth-consuming applications represented by metaverse, digital twin so on. So far, there a huge room improvement in rate, which far inferior capacity fiber optic links. In this paper, we have proposed experimentally...
We experimentally demonstrated a 10-channel 50-GHz-grid wavelength division multiplexing (WDM) signal transmission over 400-km standard single-mode fiber (SSMF) with the net bit rate of 614.4 Gbps/carrier and spectral efficiency (SE) 12.288 b/s/Hz, which is highest SE for 256QAM to best our knowledge. Thanks joint pre-equalization Volterra nonlinear equalization (VNLE), 49-Gbaud polarization (PDM) 256-ary quadrature amplitude modulation (256QAM) novel constellation using probabilistic...
5G defines below 100 GHz as the millimeter-wave bands, whereas - 3 THz is categorized band in 6G. Deep leraning (DL) expected to enable a significant paradigm shift 6G wireless networks. In this paper, D-band 90-Gbps single channel PAM-4 signal generation and transmission over 10-km SMF 3-m link at 140-GHz can be achieved. A novel complex-valued neural network (CVNN) equalizer using ‘ℂReLU’ activation function directly recover signals from received noised demonstrated....
Orthogonal frequency division multiplexing (OFDM) is a promising solution in photonics-aided millimeter-wave (MMW) communication systems, which combine the features of fiber and wireless links. In such fiber-wireless system, broadband OFDM signals could be affected by multipath effect, chromatic dispersion, synchronization error, other complex impairments. Therefore, both inter-symbol interference (ISI) inter-carrier (ICI) will cause performance degradation. this experiment, D-band MMW...
We experimentally demonstrate 16-GBaud probabilistic shaped 256-ary quadrature amplitude modulationsignal transmission over 104-m wireless distance at 339 GHz in a photonics-aided terahertz (THz)-wave communication system. Thanks to the pair of poly tetra fluoroethylene lenses and PS technique, we successfully achieve record single line rate 124.8 Gbit/s net spectral efficiency 6.2 bit/s/Hz. To best our current knowledge, it is first time >100 m single-carrier 256QAM THz-wave signal delivery.
This Letter demonstrates a real-time 100-GbE fiber-wireless seamless integration system operating at the whole W band (75-110 GHz). Based on pair of commercial digital coherent optical modules, transparent transmission 125-Gb/s dual-polarized quadrature phase-shift keying signal has been successfully achieved over two-spans 20-km fiber and up to 150-m electromagnetic single-input single-output wireless link. To best our knowledge, this is first demonstration >100-m distance millimeter-wave...
We experimentally transmit eight wavelength-division-multiplexing (WDM) channels, 16 quadratic-amplitude-modulation (QAM) signals at 32-GBaud, over 1000 km few mode fiber (FMF). In this experiment, we use WDM, division multiplexing, and polarization multiplexing for signal transmission. Through the multiple-input–multiple-output (MIMO) equalization algorithms, achieve total line transmission rate of 4.096 Tbit/s. The results prove that bit error rates (BERs) 16QAM after FMF are below...
We use the generalized pair-wise optimization (PO) algorithm to optimize geometrically shaped 32-ary quadrature amplitude modulation (GS-32-QAM) constellation and adopt probabilistic fold shaping (PFS) scheme generate probabilistically 32-QAM (PS-32-QAM) format. present a detailed comparison among application of GS-32-QAM, PS-32-QAM uniform in an intensity modulation/direct detection (IM/DD) system with bandwidth-limited digital-to-analog converter (DAC). experimentally demonstrate discrete...
In this paper, we propose and experiment with a dual-functional system that can simultaneously implement vector signal generation radar detection based on frequency quadrupling. the experimental demonstration, generated W-band quadrature-phase-shift-keying (QPSK) is transmitted wirelessly over 1 m bit-error rate (BER) below 3.8 × 10-3. A working in W band investigated range resolution of 0.94 cm. To best our knowledge, first time simultaneous QPSK has been realized.
An experimental demonstration of the ultra-large-capacity terahertz (THz)-wave signal transmission over a 20-km wired and 54-m wireless distance in an 80-channel wavelength division multiplexing (WDM) system is successfully realized for first time, to best our knowledge. Based on optical asymmetric single-sideband (ASSB) modulation advanced digital processing (DSP) algorithms, we achieve record line rate 6.4 Tbit/s (net 5.12 Tbit/s) THz-over-fiber communication system. This can provide...