Yixiao Zhu
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View article: Integration of quantum key distribution and high-throughput classical communications in field-deployed multi-core fibers
Integration of quantum key distribution and high-throughput classical communications in field-deployed multi-core fibers Open
View article: Deciphering phenylalanine-derived salicylic acid biosynthesis in plants
Deciphering phenylalanine-derived salicylic acid biosynthesis in plants Open
Salicylic acid (SA) is a ubiquitous plant hormone with a long history in human civilization1,2. Because of the central role of SA in orchestrating plant pathogen defence, understanding SA biosynthesis is fundamental to plant imm…
View article: Spectral-diversity receiver for dispersion-induced power-fading mitigation in C-band IM-DD systems
Spectral-diversity receiver for dispersion-induced power-fading mitigation in C-band IM-DD systems Open
With the ongoing expansion of artificial intelligence data centers and the increasing demand for high-speed data transmission, cost-effective optical communication systems have become critical. Intensity modulation with direct detection (I…
View article: A 4×256 Gbps silicon transmitter with on-chip adaptive dispersion compensation
A 4×256 Gbps silicon transmitter with on-chip adaptive dispersion compensation Open
The exponential growth of data traffic propelled by cloud computing and artificial intelligence necessitates advanced optical interconnect solutions. While wavelength division multiplexing (WDM) enhances optical module transmission capacit…
View article: SNR Comparison of Double Sideband and Single Sideband Signals in Direct Detection Systems
SNR Comparison of Double Sideband and Single Sideband Signals in Direct Detection Systems Open
Direct detection systems are the mainstream choice for short-reach optical interconnects. As the data rate moving towards to 400G and beyond, conventional double-sideband intensity modulation and direct detection (IM/DD) systems lack inher…
View article: On‐Chip Optical Spectrally Sliced Synthesis for Ultra‐High‐Speed Signals
On‐Chip Optical Spectrally Sliced Synthesis for Ultra‐High‐Speed Signals Open
Broadband optical signal generation is fundamental across a wide range of application areas including high‐speed optical communication, microwave photonics, and metrology. Traditionally, high baud‐rate signal generation has been constraine…
View article: Thermal Management of TSV Array in 3D Integrated Circuits Based on the Super-Element Method
Thermal Management of TSV Array in 3D Integrated Circuits Based on the Super-Element Method Open
As Moores Law approaches its physical limits, three-dimensional integrated circuits (3D ICs) utilizing Through- Silicon Vias (TSVs) are gradually replacing traditional two-dimensional integrated circuits (2D ICs). However, the highly integ…
View article: Nanosecond pulsed electric field precisely manipulates cytoplasmic Ca<sup>2+</sup>oscillations during oocyte activation
Nanosecond pulsed electric field precisely manipulates cytoplasmic Ca<sup>2+</sup>oscillations during oocyte activation Open
Oocyte activation deficiency (OAD) is a primary cause of fertilization failure following intracytoplasmic sperm injection (ICSI), a problem that can potentially be overcome through artificial oocyte activation (AOA). However, concerns pers…
View article: Coherent Optics for Passive Optical Networks: Flexible Access, Rapid Burst Detection, and Simplified Structure
Coherent Optics for Passive Optical Networks: Flexible Access, Rapid Burst Detection, and Simplified Structure Open
With the development of the Internet of Things, cloud networking, and 4K/8K high-definition video, global internet traffic has seen a dramatic increase. This surge in traffic has placed higher demands on the performance of optical networks…
View article: Computationally efficient physics-informed difference-symmetric nonlinear equalizer for C-band DML-DD links
Computationally efficient physics-informed difference-symmetric nonlinear equalizer for C-band DML-DD links Open
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 nonlinear characteristics of signals as a generic tool. In …
View article: A 4×256 Gbps Silicon Transmitter with On-Chip Adaptive Dispersion Compensation
A 4×256 Gbps Silicon Transmitter with On-Chip Adaptive Dispersion Compensation Open
The exponential growth of data traffic propelled by cloud computing, artificial intelligence, and the Internet of Things demands innovative advancements in optical communication technology. Wavelength division multiplexing (WDM) has been i…
View article: Analog circuit fault diagnosis model based on WOA and improved SDAE
Analog circuit fault diagnosis model based on WOA and improved SDAE Open
View article: Preamble Design for Joint Frame Synchronization, Frequency Offset Estimation, and Channel Estimation in Upstream Burst-mode Detection of Coherent PONs
Preamble Design for Joint Frame Synchronization, Frequency Offset Estimation, and Channel Estimation in Upstream Burst-mode Detection of Coherent PONs Open
Coherent optics has demonstrated significant potential as a viable solution for achieving 100 Gb/s and higher speeds in single-wavelength passive optical networks (PON). However, upstream burst-mode coherent detection is a major challenge …
View article: High-fidelity sub-petabit-per-second self-homodyne fronthaul using broadband electro-optic combs
High-fidelity sub-petabit-per-second self-homodyne fronthaul using broadband electro-optic combs Open
View article: Overcoming laser phase noise for low-cost coherent optical communication
Overcoming laser phase noise for low-cost coherent optical communication Open
View article: Bit weight-aware high-fidelity digital RoF fronthaul based on dual-drive MZM and chirp-dispersion Interaction
Bit weight-aware high-fidelity digital RoF fronthaul based on dual-drive MZM and chirp-dispersion Interaction Open
Digital radio-over-fiber (D-RoF) quantizes the wireless waveform to improve the noise tolerance in fronthaul links. Unlike conventional data transmission, the quantization bits exhibit different weights, offering a new strategy to protect …
View article: Beyond 200-Gb/s O-band intensity modulation and direct detection optics with joint look-up-table-based predistortion and digital resolution enhancement for low-cost data center interconnects
Beyond 200-Gb/s O-band intensity modulation and direct detection optics with joint look-up-table-based predistortion and digital resolution enhancement for low-cost data center interconnects Open
We propose a joint look-up-table (LUT)-based nonlinear predistortion and digital resolution enhancement scheme to achieve high-speed and low-cost optical interconnects using low-resolution digital-to-analog converters (DACs). The LUT-based…
View article: Gradient-descent noise whitening techniques for short-reach IM-DD optical interconnects with severe bandwidth limitation
Gradient-descent noise whitening techniques for short-reach IM-DD optical interconnects with severe bandwidth limitation Open
Bandwidth limitation in optoelectrical components and the chromatic dispersion-induced power fading phenomenon cause severe inter-symbol interference (ISI) in high-speed intensity modulation and direct detection (IM-DD) optical interconnec…
View article: Machine Learning for Self-Coherent Detection Short-Reach Optical Communications
Machine Learning for Self-Coherent Detection Short-Reach Optical Communications Open
Driven by emerging technologies such as the Internet of Things, 4K/8K video applications, virtual reality, and the metaverse, global internet protocol traffic has experienced an explosive growth in recent years. The surge in traffic impose…
View article: Multicarrier Modulation-Based Digital Radio-over-Fibre System Achieving Unequal Bit Protection with Over 10 dB SNR Gain
Multicarrier Modulation-Based Digital Radio-over-Fibre System Achieving Unequal Bit Protection with Over 10 dB SNR Gain Open
We propose a multicarrier modulation-based digital radio-over-fibre system achieving unequal bit protection by bit and power allocation for subcarriers. A theoretical SNR gain of 16.1 dB is obtained in the AWGN channel and the simulation r…
View article: Four-dimensional direct detection with Jones space optical full-field recovery
Four-dimensional direct detection with Jones space optical full-field recovery Open
Data centers, the engines of the global Internet, are supported by massive high-speed optical interconnects. In optical fiber communication, the classic direct detection obtains only the intensity of the optical field, while the coherent d…
View article: Coherent digital-analog radio-over-fiber (DA-RoF) system with a CPRI-equivalent data rate beyond 1 Tb/s for fronthaul
Coherent digital-analog radio-over-fiber (DA-RoF) system with a CPRI-equivalent data rate beyond 1 Tb/s for fronthaul Open
We propose and experimentally demonstrate a coherent digital-analog radio-over-fiber (DA-RoF) system and achieve the transmission of Tb/s common public radio interface (CPRI)-equivalent data rate for fronthaul. The proposed coherent DA-RoF…
View article: Optical Field Recovery in Jones Space
Optical Field Recovery in Jones Space Open
Optical full-field recovery makes it possible to compensate for fiber impairments such as chromatic dispersion and polarization mode dispersion (PMD) in the digital signal processing. For cost-sensitive short-reach optical networks, some a…
View article: Direct detection transmission of a PAM signal with power fading mitigation based on Alamouti coding and dual-drive MZM
Direct detection transmission of a PAM signal with power fading mitigation based on Alamouti coding and dual-drive MZM Open
Power-fading impairment induced by fiber dispersion and photodiode detection imposes a fundamental limitation on the intensity-modulation direct-detection (IM-DD) transmission systems. In this work, we propose a cost-effective pulse-amplit…
View article: Spectrally sliced heterodyne coherent receiver with halved electrical bandwidth
Spectrally sliced heterodyne coherent receiver with halved electrical bandwidth Open
A spectrally sliced heterodyne coherent receiver (SHCR) employing four balanced photodetectors and analog-to-digital converters with half of the signal bandwidth is proposed to complete the signal reception and field recovery. We first num…
View article: Sub-sampling generation of ultra-high baud rate PAM/QAM signals via high-order partial response narrowing
Sub-sampling generation of ultra-high baud rate PAM/QAM signals via high-order partial response narrowing Open
Ultra-high baud rate signal generation and detection is of great importance for future intra-data-center interconnect (intra-DCI). In this work, based on a single digital-to-analog convertor (DAC) with 120GSa/s sampling rate, we experiment…
View article: Imbalanced Mach-Zehnder Modulator for Fading Suppression in Dispersion-Uncompensated Direct Detection System
Imbalanced Mach-Zehnder Modulator for Fading Suppression in Dispersion-Uncompensated Direct Detection System Open
In this work, we systematically analyze the impact of three kinds of Mach-Zehnder modulator (MZM) imbalances, including bias deviation, amplitude mismatch, and differential time skew in intensity-modulation direct-detection (IM-DD) links. …
View article: Author Correction: Phase Conjugated and Transparent Wavelength Conversions of Nyquist 16-QAM Signals Employing a Single-Layer Graphene Coated Fiber Device
Author Correction: Phase Conjugated and Transparent Wavelength Conversions of Nyquist 16-QAM Signals Employing a Single-Layer Graphene Coated Fiber Device Open
View article: Table of Contents
Table of Contents Open
View article: Symmetric carrier assisted differential detection receiver with low-complexity signal-signal beating interference mitigation
Symmetric carrier assisted differential detection receiver with low-complexity signal-signal beating interference mitigation Open
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 detection (S-CADD)…