A5101917888- Advanced Photonic Communication Systems
- Optical Network Technologies
- Photonic and Optical Devices
- Bone Tissue Engineering Materials
- Advanced Optical Network Technologies
- Advanced Fiber Optic Sensors
- Calcium Carbonate Crystallization and Inhibition
- Dental materials and restorations
- Semiconductor Lasers and Optical Devices
- Additive Manufacturing and 3D Printing Technologies
- Dental Implant Techniques and Outcomes
- Metal and Thin Film Mechanics
- Additive Manufacturing Materials and Processes
- Advanced Fiber Laser Technologies
- Optical Wireless Communication Technologies
- Titanium Alloys Microstructure and Properties
- Anesthesia and Neurotoxicity Research
- Mineral Processing and Grinding
- Wireless Signal Modulation Classification
- Collagen: Extraction and Characterization
- Power Line Communications and Noise
- S100 Proteins and Annexins
- Nanotechnology research and applications
- Diamond and Carbon-based Materials Research
- Bone and Dental Protein Studies
Southeast University
2021-2025
Purple Mountain Laboratories
2021-2024
Institute for Advanced Reconstruction
2017-2018
Loma Linda University Medical Center
2011
Loma Linda University
2011
Case Western Reserve University
1999-2007
Broadcom (Israel)
2004
Georgia State University
2000
Bundeskriminalamt
2000
Harvard University
2000
The purpose of this study was to evaluate the effect atmosphere on phase transformation in hydroxyapatite (HA) coatings during heat treatment by varying furnace pipe. Heat always increased crystallinity HA regardless kind atmosphere. Water molecules further promoted recrystallization treatment. In a dry atmosphere, tricalcium phosphate (TCP) and tetracalcium (TTCP) were more stable than HA, so could not convert them into HA. However, humid would transform TCP TTCP hydrolytic reactions.
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...
The coexistence needs of sensing and communication in millimeter-wave (mmW) bands have urgently driven the seamless integration upcoming mmW era. However, time-frequency competition between two functions makes it difficult to accommodate both high resolution large capacity. In this article, we designed a W-band fiber-wireless link with integrated enabled by electromagnetic polarization multiplexing. ultra-wideband W band is asymmetrical single-sideband modulation along optical heterodyne...
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...
X-ray diffraction was used to characterize the increment of crystallinity HA coatings after heat treatment. Coatings were heated over temperature (T) interval 300 degrees-460 degrees C with a partial water vapor pressure 0.01 MPa and 0.001 MPa. Heat treatment also done in air, as contrast. It found that ratio (n) as-received more significant for atmosphere than those air. This increased pressure. The logarithm linearly 1/T, indicating is exponential T. reason might be recrystallization...
The high spectrum efficiency of massive multiple input output (mMIMO)-enabled beamforming is attractive for solving the number connections in next-generation radio access networks (NG-RANs). However, based on antenna sub-arrays to support multi-connections would introduce extra 2D sub-array selection and resource block (RB) allocation; meanwhile, considering front-haul bandwidth consumption reduce as much possible redundant data transmitting over NG-RANs. Therefore, a key issue how...
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...
To relieve network resource pressure and avoid congestion, the adoption of a sliding scheduling traffic model is crucial to achieve flexible radio access (RAN) function deployment provide customized services. In this paper, we investigate problem dynamic RAN slicing mapping under scheduled in metro-access/aggregation elastic optical networks (EONs). These particular requests allow for an initial latency during setup phase, as long allocation available prior preset deadline. combine request...
Surface structure in the form of roughness and organized patterning can affect osteoblastic adhesion proliferation. This study investigates effect reconstituted collagen fibrils on deposition pattern a homogeneous inorganic mineral (sodium chloride). The patterns were monitored from nanometer to millimeter scales using atomic force light microscopies. Initially, deposits formed blocks following contour fibrils. At later times, dendritic structures formed. demonstrates that surface saline...
We experimentally demonstrate a rate-flexible point-to-multipoint 100G coherent PON with downlink and uplink using digital subcarrier multiplexing to simultaneously support up 64 nodes for fixed broadband W-band mmWave wireless access.
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...
A quad multi-speed (1.25/1.5625/2.5/3.125Gb/s) serializer/deserializer implemented in 0.25/spl mu/m CMOS technology is described. It uses a 4/spl times/ interleaved sample-and-hold receiver architecture. An analog adaptive equalizer and linear phase detector are used for clock data recovery. At 3.125Gb/s, the serializer RMS jitter 2.4ps. The runs error free 2/sup 31/-1 PRBS pattern over various length, up to 40-inches, of FR4 PCB trace.
The THz wireless transmission system based on photonics has been a promising candidate for further 6G communication, which can provide hundreds of Gbps or even Tbps data capacity. In this paper, 144-Gbps dual polarization quadrature-phase-shift-keying (DP-QPSK) signal generation and over 20-km SSMF 3-m 2 × multiple-input multiple-output (MIMO) link at 500 GHz have demonstrated. To compensate the linear nonlinear distortions during fiber-wireless transmission, novel joint Deep Belief Network...
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.