A5026132633- Optical Network Technologies
- Advanced Photonic Communication Systems
- Advanced Optical Network Technologies
- Advanced Wireless Communication Techniques
- Semiconductor Lasers and Optical Devices
- Photonic and Optical Devices
- Error Correcting Code Techniques
- Power Line Communications and Noise
- Advanced Fiber Laser Technologies
- Antenna Design and Optimization
- Speech and Audio Processing
- Direction-of-Arrival Estimation Techniques
- Electromagnetic Compatibility and Noise Suppression
- Optical Wireless Communication Technologies
- Nanoplatforms for cancer theranostics
- Photonic Crystal and Fiber Optics
- Cancer Treatment and Pharmacology
- DNA and Biological Computing
- Nanoparticle-Based Drug Delivery
- Advanced Adaptive Filtering Techniques
- Advanced Memory and Neural Computing
- Conducting polymers and applications
- Digital Filter Design and Implementation
- Video Coding and Compression Technologies
- Healthcare Technology and Patient Monitoring
Sir Run Run Shaw Hospital
2024
Zhejiang University
2024
Hubei University
2024
Institute of Microelectronics
2014-2024
The Synergetic Innovation Center for Advanced Materials
2023
Nanjing Tech University
2023
Chongqing University
2023
Lanzhou University
2017-2018
Optica
2015-2018
Nanjing University of Aeronautics and Astronautics
2009-2016
A main drawback of Coherent Optical Orthogonal Frequency Division Multiplexing (CO-OFDM) system is its sensitivity to fiber nonlinearity. Nonlinear electrical equalizer based on Volterra model has been demonstrated capable compensating nonlinear distortion in an OOK or PSK optical communication system. However, the implementation complexity a prohibits deployment real-life CO-OFDM In this paper, we demonstrate that number kernels can be significantly reduced using modified Gram-Schmidt...
Charge trap materials that can store carriers efficiently and controllably are desired for memory applications. 2D promising highly compacted reliable mainly due to their ease of constructing atomically uniform interfaces, however, remain unexplored as being charge media. Here it is discovered semiconducting PbI
Superchannel WDM systems employ narrow channel spacing to achieve high spectral efficiency and increase capacity. Additionally, these attempt avoid inter-channel interference (ICI) inter-symbol (ISI), by creating maintaining both temporal orthogonality. This in turn imposes a strong requirement on the amplitude phase of received signals. For Nyquist-WDM systems, shapes are Nyquist pulses, requiring uniform density with flat phase. In practice, requirements only partially achieved, resulting...
Nonlinear distortion caused by fiber nonlinearity is a major performance-limiting factor in advanced optical communication systems. We proposed nonlinear electrical equalization scheme based on the Wiener-Hammerstein model. Compared with other popular compensation techniques such as Volterra model, model approach has simpler structure and requires less calculation. Simulation results are presented to demonstrate capability of equalizer used coherent orthogonal frequency division multiplexing...
Concatenated filtering is an important impairment in high-spectral density transmission systems enabled by flexible-grid reconfigurable optical add-drop multiplexers (ROADMs). In this paper, analytical model for wavelength selective switches (WSS) modules used to determine the statistical distribution of experimentally measured filter shapes and obtain cascaded characteristics. A generalized approach penalty assessment proposed verified using a commercial 200G 16-quadrature amplitude...
Ultra-high-speed optical communication systems which can support ≥ 1Tb/s per channel transmission will soon be required to meet the increasing capacity demand. However, over a single carrier requires either or both high-level modulation format (i.e. 1024QAM) and high baud rate. Alternatively, grouping number of tightly spaced "sub-carriers" form terabit superchannel increases while minimizing need for formats rate, may allow existing formats, rate components exploited. In ideal Nyquist-WDM...
We propose a new modulation format recognition method for optical links employing OOK, M-PSK, M-PAM, and M-QAM formats. The combines the Stokes space analysis higher order statistics as part of universal digital coherent receiver. Experimental investigation demonstrates successful single-carrier signals modulated at 31.5 GBd with BPSK, QPSK, or 16QAM, transported through 810 km large area fiber. These results enable development autonomous receivers capable identifying demodulating unknown...
Abstract The emergence of the artificial intelligence urgently requires novel devices to handle massive data and bionic simulations. As one new generation memory devices, memristor has great potential in information storage brain‐like learning due its merits, such as low energy consumption, high speed etc. In addition, randomness for breakage conducting filaments can generate true random numbers realize image encryption. this work, ITO/Cs 2 AgBiBr 6 /Al based exhibit prominent resistance...
We design, for the first time, novel successive interference cancellation (SIC) schemes a two-user nonorthogonal multiple access system using low-density parity-check codes. develop low-complexity SIC scheme treating as noise, referred to N-SIC scheme, and with joint detection modulation of signal at near user side information, J-SIC scheme. then propose new extrinsic information assisted E-SIC which exchanges decoding signals two users thus incurs an increase complexity. With simulations,...
Channel emulation is compared for 100-Gb/s PDM-QPSK from commercial transponders with channel-like spectrally carved noise and flat bands. The performance evaluated in experiments simulations on standard SMF TW-RS DWDM transmission links.
OSNR measurement methods are compared for a ROADM-enabled flexible grid system with different noise loading scenarios using both experiment and simulation. The impact of the location on filtering penalty is also investigated.
Abstract Accidental trauma is always accompanied by tissue defects with noncompressible hemorrhages. Deformable and tough biomaterials are desirable for self‐compressible hemostasis, although their preparation challenging. Here, a critical‐size calcium phosphate (C–CaP) polymer‐like high deformability mineral‐like bending strength prepared, which hybridized silk fibroin (SF) to fabricate hemostatic sponge (SF‐C). C–CaP endows SF‐C an ultrahigh elastic modulus (36.0 kPa) among analogous...
Recently efforts have been focused on ultra-high speed optical communication systems which can support 1Tb/s per channel transmission. However, over a single carrier requires either or both very high-level modulation format (i.e. PDM-1024QAM) and high baud rate. Therefore, grouping number of tightly spaced "sub-carriers", to form terabit has considered this refered as superchannel. Nyquist-WDM Coherent Optical- OFDM (CO-OFDM) are the two approaches achieve spectral efficiency in superchannel...
The tradeoff between filtering and crosstalk penalties is investigated for ROADM sequences configured in broadcast-and-select or route-and-select architectures transmitting PDM-8QAM PDM-16QAM signals routed as individual channels super-channels within the 37.5GHz grid.
One of major issues the advanced optical communication system is signal distortion caused by fiber nonlinearity. Both predistorters and equalizers have been used for nonlinearity compensation electrical has become a popular choice among engineers in recent years. However, to best authors' knowledge, no comparative study about conducted systems. Using coherent orthogonal frequency division multiplexing (CO-OFDM) as test system, we investigated performance <i...
A high-accuracy fiber-optic Michelson accelerometer based on frequency modulation is demonstrated and a new type of sensing elements designed in this letter. The interference optical waves are modulated demodulated. In theory, the sensitivity goes up with increase frequency. experimental results demonstrate that when increases from 200 to 800 Hz, 0.188 0.751 rad/g average error acceleration measurement ~1 %.
A joint digital signal processing strategy for superchannel systems is introduced and demonstrated to improve system performance over 1280-km SSMF. Joint chromatic dispersion compensation shown enable inter-channel interference cancellation dramatically reducing spectral generation detection constraints within systems.
Passband filtering and in-band crosstalk penalties are investigated using WSS filter shapes fitted a supergaussian model an analytical model. The is determined to be more accurate than the for stopband fitting penalty assessment.
We present a novel DSP architecture for coherent optical receivers that identifies time-domain hybrid modulation formats without any prior knowledge of the received signal. Experimental investigation demonstrates successful identification 31.5GBaud TDHMF signals composed with BPSK/QPSK/8QAM/16QAM after 810km transmission.
We present a hybrid modulation format recognition method combining Stokes-space analysis/higher-order-statistics, robust in lower OSNR conditions that successfully identifies OOK/BPSK/QPSK/16-QAM. The new architecture's blind demodulation performance is compared to our previous one using experimental 1056km transmission data at 16/32Gbaud.
A joint-DSP strategy for superchannel coherent optical systems is described and demonstrated. The proposed joint inter-channel interference cancellation algorithm shown to be effective in the nonlinear transmission regime, yielding 5dB OSNR improvement.