A5037967221- Advanced Photonic Communication Systems
- Optical Network Technologies
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Semiconductor Lasers and Optical Devices
- Laser-Matter Interactions and Applications
- Advanced Optical Network Technologies
- Laser Design and Applications
- Orbital Angular Momentum in Optics
- Thermal properties of materials
- Wireless Signal Modulation Classification
- Solid State Laser Technologies
- Advanced optical system design
- Surface and Thin Film Phenomena
- Optical Systems and Laser Technology
- Spectroscopy and Laser Applications
- Photonic Crystal and Fiber Optics
- Advancements in Semiconductor Devices and Circuit Design
- Image Processing Techniques and Applications
Southeast University
2023-2025
Purple Mountain Laboratories
2023-2024
Shanxi University
2021-2022
University of Nottingham
1996
In fiber-wireless integration systems, it is valuable to investigate whether digital subcarrier multiplexing (SCM) signal effective in improving nonlinear tolerance against photodiode (PD) saturation compared single-carrier (SC) signal. For a fair comparison, the mitigation of linear impairments especially for IQ mixing effects become significant. this article, we first analyze impacts transmitter SC and SCM signals. Then, employ real-valued multiple-input multiple-output (MIMO)...
Outdoor long-range terahertz (THz) communications often come at the expense of transmission rate. Moreover, practicability single polarization optical/THz link, which is commonly used in previous THz demonstrations based on photonics, extremely limited by following two fatal defects. One relying active control, and other not supporting transparent bridging optical division multiplexed (PDM) signals for mature coherent communication networks. In this work, a large-capacity photonics-aided...
Intensity modulation/direct detection (IM/DD) and coherent schemes are two kinds of promising solutions to achieve the evolution for B5G/6G fronthaul networks. IM/DD has more mature commercial deployment applications short-reach with lower costs simpler configurations compared solutions. In this paper, we experimentally demonstrate a local area network-wavelength division multiplexing (LAN-WDM) access system record bit rate 2 Tb/s (250 Gbit/s×8) probabilistic shaping eight-pulse amplitude...
We propose and experimentally demonstrate an intelligent nonlinear compensation method using a stacked autoencoder (SAE) model in conjunction with principal component analysis (PCA) technology bidirectional long-short-term memory coupled ANN (BiLSTM-ANN) equalizer for end-to-end (E2E) fiber-wireless integrated system. The SAE-optimized constellation is utilized to mitigate nonlinearity during the optical electrical conversion process. Our proposed BiLSTM-ANN primarily based on time...
In this Letter, we propose a novel, to the best of our knowledge, adaptive feedback-driven probabilistic constellation-shaping (FBD-PCS) method based on robustness evaluation criteria and employ variational autoencoder (VAE)-based equalizers implement polarization demultiplexing nonlinear equalization for recovery high-order PCS-QAM signals. We experimentally demonstrate fiber-THz 2 times MIMO system with net rate 366.4 Gbit/s using dual-polarization 40 Gbaud PCS-64QAM signal over 20 km SSMF...
The integration of photonic terahertz (THz) wireless and optical fiber links combines the advantages ultra-long distance, low-loss, high-capacity transmission link with flexible, seamless THz link. Compared single-carrier (SC) modulation, orthogonal frequency division multiplexing (OFDM) modulation technology has higher spectral efficiency exhibits robustness against dispersion in transmission, effectively alleviating multi-path effects communication. In study, we experimentally demonstrated...
We experimentally demonstrate 56-GBaud PS-64QAM signal fiber-THz-fiber seamless communication by employing photonic up-/down-conversion technique and cascaded MIMO equalization algorithms, achieving a record-breaking single-carrier line rate of 616 Gbit/s.
We experimentally demonstrate the robustness of autoencoder-based constellation shaping against semiconductor laser noise and nonlinearity. Up to 46% lower BER 1.5 dB gain are achieved in fiber-THz system at 320 GHz.
We successfully demonstrate photonics-assisted single-carrier 466.4 Gbit/s wireless transmission over 20 km SSMF and 6 m single-input single-output (SISO) delivery at 92.5 GHz. This is achieved by employing a likelihood-aware vector-quantized variational autoencoder (VQ-VAE) equalizer for polarization demultiplexing an advanced multiple-input multiple-output (MIMO) Volterra nonlinear (MIMO-VNE) further to compensate linear crosstalk between two polarizations. The capacity robustness of the...
Based on the dispersion management technology, transmission characteristics of Airy pulses in optical fiber systems are studied theoretically and numerically. The results show that group velocity third-order change periodically along direction can prolong pulses. Under action varying dispersion, symmetrical reversal pulse be realized which shape keeps invariable tail converses after inversion. When periodic effect is also considered, happens regenerated at certain distance. Adjusting...
We propose and experimentally demonstrate a novel nonlinear constellation shape auto optimization method with complex-valued 2D-ANN equalizer. Up to 70% lower BER compared the conventional format is achieved at 50 Gbps in fiber-MMW system.
We studied the influence of frequency and phase noise semiconductor laser on performance photonics assisted terahertz wave system. The spectrum is Lorentzian intrinsic shape when only Gaussian white exists. increases with increase spectral linewidth laser. When considering 1 f noise, will be superimposed noise. in low-frequency band make reconstructed whole tend to non-Lorentzian shape, which has a serious impact system performance. affected by resonance frequency, side lobes appearing both...
We propose and experimentally demonstrate a novel nonlinear constellation shape auto-optimization method with complex-valued 2D-ANN equalizer. Up to 70% lower BER compared the conventional format is achieved at 50 Gbps in fiber-MMW system.