A5002870353- Optical Network Technologies
- Advanced Photonic Communication Systems
- Photonic and Optical Devices
- Advanced Fiber Laser Technologies
- Semiconductor Lasers and Optical Devices
- PAPR reduction in OFDM
- Advanced Optical Network Technologies
- Optical Wireless Communication Technologies
- Photonic Crystal and Fiber Optics
- Advanced Wireless Communication Techniques
- Orbital Angular Momentum in Optics
- Optical Coherence Tomography Applications
- Power Line Communications and Noise
- Advanced Power Amplifier Design
- Advanced Optical Sensing Technologies
- Diamond and Carbon-based Materials Research
- Neural Networks and Reservoir Computing
- Optical Polarization and Ellipsometry
- Magneto-Optical Properties and Applications
- Force Microscopy Techniques and Applications
- Advanced Fiber Optic Sensors
- Optical Systems and Laser Technology
- Semiconductor materials and devices
- Error Correcting Code Techniques
- Combustion and flame dynamics
Shanghai Jiao Tong University
2020-2025
Harbin University of Science and Technology
2024-2025
Marine Design & Research Institute of China
2024
Xinjiang Normal University
2023
Optica
2023
Peng Cheng Laboratory
2023
Yanshan University
2022
Peking University
2014-2021
Beijing Institute of Technology
2021
ZTE (China)
2020
We propose and experimentally demonstrate a coherent digital-analog radio-over-fiber (DA-RoF) system achieve the transmission of Tb/s common public radio interface (CPRI)-equivalent data rate for fronthaul. The proposed DA-RoF includes modulation, demodulation compatible digital signal processing (DSP) blocks. A theoretical analysis scheme together with parameter optimization is accomplished as well. In experiment, 25 Gbaud 1 CPRI-equivalent transmitted in system, satisfying error vector...
Abstract Artificial-intelligence-generated content has driven explosive data traffic growth in data-center interconnects. Traditional direct detection solutions struggle with limited spectral efficiency and distance, prompting the shift to coherent optics for cost-sensitive short-reach links. One specific challenge is integrating low-cost lasers while overcoming severe phase noise on high-order modulation formats. Here, we propose a residual carrier scheme precise efficient frequency...
We demonstrate 1.728 Tb/s(16×108 Gb/s) direct-detection wavelength division multiplexing (WDM) transmission over 80 km standard single mode fiber (SSMF) with Nyquist 64-ary quadrature amplitude modulation (64-QAM) and half-cycle subcarrier modulation. Each channel carries sideband 18 GBaud 64-QAM signal the spacing is 27 GHz. Considering 20% soft-decision forward error correction frame redundancy, a net spectral efficiency record of 3.25 b/s/Hz achieved for 100 G polarization WDM transmission.
In this work, based on a conventional silicon photonic travelling-wave Mach-Zehnder modulator (MZM) with 3-dB bandwidth of 22.5 GHz, we experimentally demonstrate ultra-high speed optical interconnects Nyquist shaped pulse amplitude modulation (PAM) signals. For bandwidth-limited systems, two-tap digital post filter is employed to suppress the equalization-enhanced high frequency noise. The induced inter-symbol interference (ISI) subsequently eliminated by maximum likelihood sequence...
As the capacity of next-generation passive optical network (PON) is reaching 100 Gb/s and beyond, cost-effective transceivers have been widely discussed. In this work, we provide a comprehensive comparison various simplified coherent direct detection (DD) schemes operating at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow class="MJX-TeXAtom-ORD"> <mml:mn>100</mml:mn> <mml:mspace width="thickmathspace"/> <mml:mi mathvariant="normal">G</mml:mi>...
Phase-retrieval (PR) schemes based on the modified Gerchberg-Saxton (GS) algorithm capture full-field employing a dispersive element and intensity-only measurements to eliminate use of local oscillator. In this work, we propose two carrier-assisted PR schemes, namely central (CCA-PR) edge (ECA-PR), improve comprehensive performance receiver in terms convergence speed, redundancy, computational complexity. The proposed CCA-PR recovers electrical field reference direct current carrier with...
We propose a novel direct detection (DD) scheme for polarization division multiplexed (PDM) single sideband (SSB) signals with two orthogonal carriers located at the opposite sides. Polarization diversity is realized pair of optical filters that are used to suppress unwanted carrier component. A PDM-SSB DD receiver thus constructed without de-rotation. The intra-polarization signal-signal beat interference (SSBI) can be mitigated by Kramers-Kronig or iterative SSBI cancellation. For...
Volterra nonlinear equalizer (VNE) is widely used in intensity modulation and direct detection (IM/DD) systems because it employs multi-order operations to effectively capture the characteristics of signals as a generic tool. In specific directly-modulated laser with (DML-DD) link, interaction between chirp DML chromatic dispersion (CD) can be modeled composite second-order (CSO) distortion. By incorporating CSO model into equalizer, possible better extract feature end-to-end channel,...
With the development of Internet Things, cloud networking, and 4K/8K high-definition video, global internet traffic has seen a dramatic increase. This surge in placed higher demands on performance optical networks, featuring data rates, lower latency, cost. The passive network (PON) is representative scenario access networks. Issues such as burst-mode detection upstream PON scenarios, flexible rate allocation downstream simplification hardware complexity at unit (ONU) side have attracted...
Fronthaul plays a crucial role in bridging mobile and optical communications. Conventional digital radio-over-fiber (RoF) systems, utilizing the common public radio interface (CPRI), require capacity exceeding an order of magnitude above user data rate, posing challenges for dense small cell deployments growing bandwidth demands 6 G beyond. Intermediate-frequency-over-fiber (IFoF) with intensity modulation direct detection (IM/DD) presents promising alternative due to its high spectral...
The rapid development of artificial intelligent clusters and computing networks demands solutions with minimized power consumption latency to scale effectively. Traditionally, high-speed intensity modulation direct detection (IM/DD) optical interconnects rely heavily on digital signal processing (DSP), leading substantial high latency. In this work, we utilize a broadband thin-film lithium niobate (TFLN) Mach-Zehnder modulator (MZM) chip compare performance differences between linear receive...
Oocyte activation deficiency (OAD) is a primary cause of fertilization failure following intracytoplasmic sperm injection (ICSI), problem that can potentially be overcome through artificial oocyte (AOA). However, concerns persist regarding the safety and efficacy AOA techniques in clinical practice. In this study, nanosecond pulsed electric field (nsPEF) proposed as safe controllable method for vitro by precisely manipulating Ca2+ signaling ooplasm. Mouse oocytes collected from oviducts were...
As Moores Law approaches its physical limits, three-dimensional integrated circuits (3D ICs) utilizing Through- Silicon Vias (TSVs) are gradually replacing traditional two-dimensional (2D ICs). However, the highly also introduce more significant thermal issues. In this paper, an optimization method for positions of multiple heat sources in TSV array is proposed to minimize temperature and gradient within model. This study employs super-element methods simulations, leverages superposition...
We report the experimental demonstration of single wavelength terabit free-space intensity modulation direct detection (IM-DD) system employing both orbital angular momentum (OAM) multiplexing and polarization division (PDM). In our experiment, 12 OAM modes with two orthogonal states are used to generate 24 channels for transmission. Each channel carries 30 Gbaud Nyquist PAM-4 signal. Therefore an aggregate gross capacity record 1.44 Tb/s (12 × 2 Gb/s) is acheived a efficiency 48...
In this paper, we experimentally demonstrate a 1.28 Tb/s faster-than-Nyquist (FTN) wavelength division multiplexing (WDM) system with polarization multiplexed (PDM) 16-ary quadrature amplitude modulation (16-QAM) signal and coherent detection. Note that intersymbol interference (ISI) intercarrier (ICI) are two major problems in FTN-WDM systems. our experiment, use digital brick-wall filter at the transmitter to reduce bandwidth fit channel spacing. doing so, ICI can be mostly suppressed when...
Low-cost, spectrally efficient self-coherent detection capable of optical field recovery is desired for inter-data center connections and metro networks. In this work, a simplified symmetric carrier assisted differential (S-CADD) receiver structure proposed, which removes the single-ended photodiode branch saves one ADC in standard asymmetric CADD (A-CADD) receivers. To compensate signal-signal beating (SSBI) impairment, low-complexity iterative SSBI mitigation algorithm put forward as well....