bluuebunny/crossref_metadata_2025 huggingface dataset:
Global intention of the general public to undergo COVID-19 vaccination: time trends and risk factors for vaccine refusal, a Systematic Review and Meta-analysis
Authors: Parthasarathi Ashwaghosha , Puvvada Rahul Krishna , Basappa S , Krishna Mamidipudi Thirumala , P A Mahesh
Published: January 2022

Background:  Knowledge of facilitators and barriers regarding the uptake of COVID-19 vaccination at a global population level is critical for combating the pandemic, saving lives, and protecting the economy.  The aim of this work was to determine the proportion of people likely to accept or refuse to undergo COVID-19 vaccination.  This study also investigated (a) time trends regarding the intention to undergo COVID-19 vaccination and (b) socio-demographic risk factors influencing vaccine refusal.

Methods: Databases (01 March 2020-01 March 2021) searched included PubMed, MEDLINE, and Scopus. The sample size was n ≥1000 and selected studies were those that determined vaccine ‘acceptance’, ‘refusal’ and ‘hesitancy’. A random-effects model was employed to obtain the overall odds ratio (OR) and 95% confidence interval (CI) for socio-demographic predictors for vaccine refusal.

Results:  A total of 832 citations were screened and 35 studies from 21 countries (n=130,179) were analyzed.  The pooled proportion of individuals reporting an intention to vaccinate was 0.70 (95% CI: 0.65 to 0.74; I2 = 99.68%). The proportion of people intending to vaccinate decreased (regression coefficient = -0.13; p<0.001) during the study period and odds of refusal to vaccinate increased by 1.37-fold (95% CI: 1.33-1.41) during the second half. Risk factors identified for vaccine refusal included being female, rural residence, lower income, and lower level of formal education. 

Conclusions: A moderate proportion of people showed an intention to receive vaccination, although this declined during the study period. A global and national multi-pronged strategic and targeted approach is urgently needed to enhance vaccination uptake amongst females, those with a relatively lower educational and socioeconomic status, and those in rural areas.
Narracja jako temporalna podróż po świecie sensów i znaczeń
Authors: Krawczyk-Bocian Amelia , Leppert Roman
Published: January 2022

Przedmiotem artykułu jest narracja, towarzysząca człowiekowi w toku biograficznego życia. Tak pojmowana narracja występuje w zwyczajnej ludzkiej rozmowie, która pozwala zarówno narratorowi, jak i słuchającym narracji podążać temporalną drogą indywidualnej historii życia. W opracowaniu zostały wyróżnione i omówione rozumienia narracji jako: „znamię momentu historycznego” (za Normanem Denzinem), opowieść w drodze, narracja świadka. Całość kończy charakterystyka potocznego pojmowania narracji jako opowieści w drodze.
Frontiers: Impact of Stay-at-Home-Orders and Cost-of-Living on Stimulus Response: Evidence from the CARES Act
Authors: Misra Kanishka , Singh Vishal , Zhang Qianyun (Poppy)
Published: January 2022

During the 2020 COVID-19 epidemic, the U.S. Congress passed the CARES Act that (among other measures) provides direct payments to households. Using a large debit cards database, we analyze consumer expenditures following the stimulus payments. We observe zip code level daily transactions (approximately 12 million cards) before and immediately following the disbursements of stimulus checks. Empirical analysis exploits geographical variation in timing of federal deposits to identify marginal propensity to consume (MPC) for stimulus payments. We estimate between 0.29 (excluding banking) and 0.51 (all spend) of the rebate is spent within a few days of receipt. We find large cross-sectional heterogeneity with MPC estimates that are three times higher in magnitude in the most densely populated urban areas with higher cost-of-living. In areas with more restricted movement during the pandemic (as measured by Google workplace mobility), MPC estimates are approximately 60% higher. We reanalyze data from previous fiscal initiatives (2001 tax rebates and the 2008 fiscal stimulus) and find similar geographical differences. Collectively our results highlight an important shortcoming in fiscal policies that ignore local environment, particularly cross-sectional differences in cost-of-living across the United States.
Do Managers Overreact When in Backlog? Evidence of Scope Neglect from a Supply Chain Experiment
Authors: Oliva Rogelio , Abdulla Huseyn , Gonçalves Paulo
Published: January 2022

Problem definition: We empirically examine a complementary behavioral source of the bullwhip effect that has been previously overlooked in the literature: that individuals order more aggressively (i.e., overreact) when they face shortages than when they hold inventory. Methodology/Results: We conduct a behavioral experiment using the beer distribution game. We estimate decision rules using multilevel modeling approaches that overcome several drawbacks of the estimation methods used in the earlier literature. We find robust evidence that, contrary to the overreaction when in backlog hypothesis and reports from popular press, decision makers order less aggressively and become insensitive to the scope of the problem when in backlog—a scope neglect phenomenon. Managerial implications: We propose a dual-process theoretical account predicated on affective reactions to explain this scope neglect. Our results suggest that affective reactions under novel operating conditions or dramatic events in supply chains, such as the COVID-19 pandemic, can overwhelm cognitive processing of managers and make them fail to recognize the full scope of the problems faced and update decision models accordingly. Understanding the cognitive-affective drivers of ordering behaviors that generate supply chain instability is important in designing interventions to mitigate their negative effects.
Data-Driven Pricing for a New Product
Authors: Zhang Mengzhenyu , Ahn Hyun-Soo , Uichanco Joline
Published: January 2022

Pricing a New Product with Data

Before a product launch (or even after a launch), firms often have little demand information and often do not know critical information such as the market size, the willingness-to-pay distribution, or the adoption speed. The lack of information makes pricing a new product challenging, and insufficient data makes demand forecasting very difficult. This is particularly costly for new products because the current price not only affects the current revenue, but also the number of adopters who can influence future demand. In this paper, we consider a setting in which a firm can learn by observing early sales data at (different) prices over time. We propose a simple and computationally tractable pricing policy that guides price changes after introducing the product. Using mathematical proofs and computational study, we show that our method substantially outperforms existing methods even with a very few price changes during a selling season.
Data Science for Motion and Time Analysis with Modern Motion Sensor Data
Authors: Park Chiwoo , Do Noh Sang , Srivastava Anuj
Published: January 2022

Data Science for Motion and Time Analysis

Motion and time analysis has been a popular tool in operations research for analyzing work performance in manufacturing and service operations. The current practice in motion and time analysis involves many labor-intensive steps such as stop-watching, videotaping, and manual data analysis. It is too inefficient to be practiced regularly for continuous improvement. Whereas modern sensing devices have automated and eased motion measurements, the motion analytics transforming the new data into knowledge are largely underdeveloped. Unsolved technical questions include: How can the motion and time information be extracted from the motion sensor data? How are work motions and work rates statistically modeled and compared? How are the motions correlated to the rates? This paper develops solutions to the technical questions into a novel data science framework for motion and time analysis. The new framework is demonstrated with industrial use cases for a smart factory.
Optimizing Local Anaesthetic Practice: Addressing Misconceptions and Minimizing Anaesthetic Failures
Authors: Oghabi Negin , Renton Tara
Published: January 2022

Local anaesthesia is a sine qua non for pain management in dentistry. Optimizing local anaesthesia practice reduces intra-operative pain, and ultimately ameliorates patient comfort. Many patients still report experiencing intra-operative pain despite being anaesthetized. This is commonplace with inferior alveolar nerve blocks, the current routine approach to mandibular anaesthesia. This technique has been shown, in many cases, to fail at first attempt and can be uncomfortable for patients. It has a higher positive-aspiration rate than other techniques, increasing the risk of systemic complications.

CPD/Clinical Relevance: Clinicians should be aware of more effective techniques for mandibular anaesthesia for optimal and safe pain management, and ultimately a better patient experience.
The Use of a Gothic Arch Tracing to Record Centric Relation in the Construction of Complete Dentures
Authors: Strain Kenneth J , Hoyle Philippa , Ali Zaid , Bonsor Stephen J
Published: January 2022

The establishment of a fixed and reproducible reference point (centric relation) is critical when reorganizing the occlusion in a dentate patient or constructing complete dentures in an edentulous patient. There are many techniques for guiding the patient's mandible into centric relation and recording the relationship between the maxilla and mandible in this position. Some patients are resistant to being manipulated into this position and have an unreproducible habitual path of closure. A gothic arch tracing is considered to be the most reliable and predictable method of determining centric relation. The present article describes the gothic arch tracing technique and illustrates its use in an edentulous patient during the construction of complete dentures.

CPD/Clinical Relevance: The gothic arch technique can be used to predictably locate centric relation in both dentate and edentulous patients.
Development of a core outcome set for the orthopaedic management of spinal dysraphism
Authors: Leo Donato G. , Green Gemma , Eastwood Deborah M. , Bridgens Anna , Gelfer Yael
Published: January 2022

Aims

The aim of this study is to define a core outcome set (COS) to allow consistency in outcome reporting amongst studies investigating the management of orthopaedic treatment in children with spinal dysraphism (SD).

Methods

Relevant outcomes will be identified in a four-stage process from both the literature and key stakeholders (patients, their families, and clinical professionals). Previous outcomes used in clinical studies will be identified through a systematic review of the literature, and each outcome will be assigned to one of the five core areas, defined by the Outcome Measures in Rheumatoid Arthritis Clinical Trials (OMERACT). Additional possible outcomes will be identified through consultation with patients affected by SD and their families.

Results

Outcomes identified in these stages will be included in a two-round Delphi process that will involve key stakeholders in the management of SD. A final list including the identified outcomes will then be summarized in a consensus meeting attended by representatives of the key stakeholders groups.

Conclusion

The best approach to provision of orthopaedic care in patients with SD is yet to be decided. The reporting of different outcomes to define success among studies, often based on personal preferences and local culture, has made it difficult to compare the effect of treatments for this condition. The development of a COS for orthopaedic management in SD will enable meaningful reporting and facilitate comparisons in future clinical trials, thereby assisting complex decision-making in the clinical management of these children. Cite this article: Bone Jt Open 2022;3(1):54–60.
Planning Security-aware Filterless Optical Networks (Invited Paper)
Authors: Lv Qian , Zhu Zuqing
Published: January 2022

We consider to leverage optical transport network (OTN) encryption to enhance the security in filterless optical networks (FONs), and solve the resulting security-aware multilayer planning.
Real-time, Software-defined, Multi-modulation Format, GPU-based Receiver
Authors: van der Heide Sjoerd , Luis Ruben S. , Goossens Sebastiaan , Puttnam Benjamin J. , Rademacher Georg , Koonen Ton , Shinada Satoshi , Awaji Yohinari , Alvarado Alex , Furukawa Hideaki , Okonkwo Chigo
Published: January 2022

Real-time digital signal processing for IM/DD PAM-N and Kramers-Kronig coherent N-QAM is implemented on a commercial off-the-shelf GPU. Transmission over 91 km of field-deployed fiber and a 10,000 km straight-line link is demonstrated.
A Real Time Implementation of 3-Stage Equalizer for Burst-Mode Digital QPSK Receivers of the Coherent PON
Authors: Zeng Tao , He Zhixue , Meng Linheng , Jiang Feng , Yu Shaohua
Published: January 2022

In this paper, we implement a real time 3-stage equalizer for burst-mode digital coherent receivers in asynchronous PON upstream, and demonstrate a high performance multi-function preamble header. We evaluate the performance of this architecture in the experiment.
C-Band 112-Gb/s PAM-4 Transmission over 50-km SSMF Using Absolute-Term Based Nonlinear FFE-DFE
Authors: Wu Xiong , Zhang Junwei , Zhou Gai , Lau Alan Pak Tao , Lu Chao
Published: January 2022

An absolute-term based nonlinear FFE-DFE (AT-NFFE-DFE) is proposed and demonstrated for a 112-Gb/s PAM-4 system over 50-km SSMF, which saves 25.2% computational complexity at a BER of 3.8 × 10−
3
compared to the polynomial NFFE-DFE.
QoT Evaluation of Optical Line System Transmission with Bismuth-Doped Fiber Amplifiers in the E-Band
Authors: Correia B. , Donodin A. , Sadeghi R. , Dvoyrin V. , Napoli A. , Pedro J. , Costa N. , Forysiak W. , Turitsyn S. K. , Curri V.
Published: January 2022

We numerically investigate E-band quality of the transmission using an experimentally characterized bismuth-doped fiber amplifier, demonstrating its impact on de-ployed C+L systems.
A Performance Optimization Method for Learned Digital Backpropagation to Select the Optimal Power(s) of Training Data
Authors: Huang Xiaoqian , Wu Zhen , Tang Du , Qiao Yaojun
Published: January 2022

A method is proposed to select the optimal power(s) of training data for learned digital backpropagation (LDBP): Low-step LDBP should be trained on multi-power data, while high-step LDBP should be trained on high single-power data.
Photonic integrated circuits for optical wireless communication
Authors: Koonen Ton , Cao Zizheng
Published: January 2022

Optical wireless communication is becoming vital for solving the imminent congestion of radio-wireless networks. Mass deployment will require cost-effective photonic integrated circuits. This tutorial overlooks both transmitter and receiver circuits for wide-field as well as beam-steered OWC.
Monolithic Integrated Continuously Tunable Terahertz Source Based on a Dual-Wavelength DBR Laser
Authors: Xiong Wanshu , Sun Mengdie , Yao Ruoyun , Guo Qianwen , Broeke Ronald , Ji Chen
Published: January 2022

We demonstrate a tunable terahertz (THz) source whose generation range over 0.05-0.7THz. The monolithically integrated Terahertz generation chip consists of dual-wavelength Distributed Bragg Reflector (DBR) lasers, an SOA and a multimode interference (MMI) coupler.
Flexible Sb2Se3 solar mini-module for IoT application
Authors: Li Kanghua , Chen Chao , Tang Jiang
Published: January 2022

An ultra-thin, lightweight, flexible Sb2Se3 solar mini-module (25 cm2 area) was constructed. Then, the application of the mini-module for powering the sensors of the Internat of Things was demonstrated.
Fluorescence Lifetime Imaging Microscopy and its Biomedical Applications
Authors: Qu Junle , Liu Liwei , Lin Danying , Ohulchanskyy Tymish Y.
Published: January 2022

In this talk, I will introduce the basic principle of fluorescence lifetime imaging microscopy (FLIM), review its recent progress, discuss the challenges for FLIM technology and present recent applications of FLIM in biomedicine.
Sparsely-Connected Cascade Recurrent Neural Network-Based Nonlinear Equalizer for a 100-Gb/s PAM4 Optical Interconnect
Authors: Xu Zhaopeng , Dong Shuangyu , Jiang Chenxin , Manton Jonathan H. , Shieh William
Published: January 2022

A sparsely-connected cascade recurrent neural network is proposed based on pruning which enables a 100-Gb/s 15-km PAM4 transmission using a bandwidth-limited DML. Compared with the fully-connected counterpart, 21.66% connections are saved without degrading system performance.
Multi-Agent Federated Reinforcement Learning for Privacy-enhanced Service Provision in Multi-domain Optical Network
Authors: Liu Haiyu , Gu Rentao , Li Zhekang , Ji Yuefeng
Published: January 2022

We propose a multi-agent federated reinforcement learning algorithm for privacy- enhanced service provision in multi-domain optical network. Experimental results show blocking probability is reduced from 11% to 1% and the deviation ratio is within 3%.
Demonstration of stimulated Brillouin scattering in low-loss chalcogenide waveguides
Authors: Song Jingcui , Wan Lei , Guo Xiaojie , Feng Tianhua , Zhang Bin , Li Zhaohui
Published: January 2022

The Brillouin gain characteristics were demonstrated in two low-loss chalcogenide waveguides. Compared with the Brillouin gain coefficient of 202 m−1W−1 in the As-S spiral waveguide, the gain performance of the Ge-As-S counterpart was measured to be 118 m−1W−1.
Nonlinearity Enhancement in Organic-Silicon Hybrid Slot Waveguide
Authors: He Su , Wang Yonghua , Cai Houzhi , Lei Lei
Published: January 2022

We experimentally demonstrate a highly nonlinear organic-silicon hybrid slot waveguide (HN-OSSW), whose nonlinear coefficient reaches to 1.55 × 106 W−1km−1 with the waveguide length of 2mm.
Noise and Scalability Investigation of SOA-based All-optical Photonic Deep Neural Network
Authors: Shi Bin , Pan Bitao , Calabretta Nicola , Stabile Ripalta
Published: January 2022

We emulate and experimentally validate the scaling of SOA-based all-optical deep neural networks by accurately modeling the OSNR degradation in a chain of SOAs: The photonic neural network can scale up to 16 layers when using only 4 neurons/layer without notable accuracy degradation.
Silicon-on-insulator grating couplers for dual-band and triple-band multiplexing
Authors: Cheng Lirong , Mao Simei , Fu H. Y.
Published: January 2022

We demonstrate dual-band and triple-band operating grating couplers on silicon-on- insulator. These grating couplers simultaneously couple multiple bands and spatially separating them with calculated coupling efficiencies of <4 dB for all bands.
512-Channel Optical Phased Array with Large Field of View and High Resolution
Authors: Wang Pengfei , Luo Guangzhen , Ma Pengfei , Yu Hongyan , Zhou Xuliang , Xu Yang , Zhang Yejin , Pan Jiaoqing
Published: January 2022

We demonstrated a silicon-photonic OPA chip with a field of view of 102°x20ând an angular resolution of 0.2°×0.2°, which provides a foundation for the application of larger-scale OPA chips to all-solid-state LIDAR.
Single-frequency Dual-cavity Laser on Erbium-doped Lithium Niobate on Insulator
Authors: Xiao Zeyu , Wu Kan , Cai Minglu , Li Tieying , Chen Jianping
Published: January 2022

We report a single-frequency dual-cavity laser on the Er:LNOI platform. Facilitated by the Vernier effect and gain competition, the output single-frequency signal light has a power of 0.31 μW and an SMSR of 31 dB.
70 Gbit/s Optical NRZ modulation based on Silicon Photonic Crystal Modulator
Authors: Zhang Yuguang , Wu Dingyi , Wang Lei , Xiao Xi
Published: January 2022

We present an ultra-high speed silicon photonic crystal modulator with the 3-dB electro- optical bandwidth of 38.6 GHz. Based on the ultra-compact silicon photonic crystal modulator, modulation of 70 Gbit/s NRZ signal is experimentally demonstrated.
Simultaneous All-Optical XOR and XNOR Logic Gates in Highly Nonlinear Organic-Silicon Hybrid Slot Waveguide
Authors: Ye Piaopiao , Wang Yonghua , Huang Jianheng , Lei Lei
Published: January 2022

We have experimentally demonstrated all-optical XOR and XNOR gates at 40 Gb/s based on the non-degenerate four-wave mixing in a 3 mm long highly nonlinear organic-silicon hybrid slot waveguide, providing great potential for future applications in all-optical networks.
Signal demodulation method based on amplitude detection for distributed wide-frequency domain optical fiber sensing
Authors: Chen Qian , Wang Ziji , Chang Hongqiang , Wan Hongdan
Published: January 2022

The paper proposed a distributed broadband demodulation method of optical fiber sensing signal based on amplitude detection. Realization of 2Hz~2.5kHz vibration signal demodulation with <±5% error and analysis of pipeline leakage signal.
Demonstration of 100Gb/s/λ 32QAM-DMT Transmission in Intra-DCI Using 10G-calss EML Modulator and 4-bit DAC
Authors: Yin Mingzhu , Luo Zhibin , Zou Dongdong , Yi Xingwen , Li Zhaohui , Li Fan
Published: January 2022

Enabled by fast-precoding DFT-S for PAPR suppression and noise-shaping technique for redistribution of quantization-noise in signal quantization with 4-bit DAC, a low-cost 100Gb/s short-haul Intra-DCI using 10G-class EML modulator and 4-bit DAC is experimentally demonstrated in this paper.
Crosstalk and Power Fading in a WDM-RoF Based MFN Using Directly Modulation 3s-DBR Laser
Authors: Xu Haixuan , Zhu Yao , Wu Yuze , Browning Colm , Barry Liam P. , Yu Yonglin
Published: January 2022

We experimentally investigate a RoF-based MFH for 5G system with a tunable 3s- DBR laser. Transmission performance of 12 channels and 16 channels of 211 MHz-bandwidth f- OFDM signals with 16QAM over SSFM are evaluated and compared.
High-speed Spectral-scanning FMCW LiDAR System Based on Tunable VCSEL
Authors: Han Yaqi , Li Zhi , Wu Lican , Fu H. Y.
Published: January 2022

We demonstrate an ultrafast spectral-scanning LiDAR system by utilizing a compact tunable VCSEL. The proposed system can realize the two-dimensional beam scanning with 8 kHz sweep rate and millimeter-level ranging precision simultaneously.
Demonstration of All-Digital Burst Clock and Data Recovery for Symmetrical Single-wavelength 50G PON Application using Low-bandwidth Optics
Authors: Zhang Jiao , Zhou Qingyi , Zhu Min , Liu Xiang , Hua Bingchang , Cai Yuancheng , Lei Mingzheng , Tian Liang , Zou Yucong , Li Aijie
Published: January 2022

We experimentally demonstrated all-digital burst clock and data recovery for symmetrical 50-Gb/s/λ PON using low-bandwidth optics over the same fiber link to support over 26 dB power budget. The performances of uplink burst-mode is studied.
High performance parametric spectro-temporal analyzer assisted by a soliton microcomb
Authors: Hu Hao , Yang Ningning , Wang Weiqiang , Chen Liao , Zhang Chi , Zhang Wenfu , Zhang Xinliang
Published: January 2022

We experimentally demonstrated a high performance parametric spectro-temporal analyzer. Assisted by a soliton microcomb, it achieved a resolution of 4 pm, a bandwidth of 13 nm and the tunable frame rate from kHz to MHz.
Dual-mode heterodyne gas tracing in a graphene-based fiber laser microresonator
Authors: Guo Yanhong , An Ning , Li Yiwei , Tan Teng , Wang Yiping , Rao Yunjiang , Yao Baicheng
Published: January 2022

By combining monolayer graphene in an erbium-doped D-shaped fiber DBR, we achieve both Q-switching and cavity-oscillation mode lasers in an all-in-one fiber-optical device, label-freely detecting NH3 and CO2 gas in mixture with nM/L sensitivity.
Simultaneous pressure and temperature measurement system for flexible Ureteroscope Lithotripsy
Authors: Zhao Yanjin , Song Ningfang , Gao Fuyu , Xu Xiaobin
Published: January 2022

For real-time pressure and temperature monitoring during flexible ureteral lithotripsy, a optical fiber sensor based on the Fabry-Pérot cavity and a synchronous decoupling detection system are proposed to realize the high-sensitivity and quick-response measurement.
Best spectral spacing for 90 GBaud WDM carriers
Authors: Zami Thierry , Lavigne Bruno
Published: January 2022

While transponders as fast as 90 GBaud emerge in meshed WDM networks, we examine how the related most performant inter-carrier spectral spacing depends on the filtering sharpness of WSS's in OXCs that channels cross transparently
A Photonics-Assisted RF self-interference Cancellation System with an Improved Signal to Noise Ratio
Authors: Liu Shuo , Shao Kunlin , Cao Fengting , Li Lu , Zhang Yamei , Pan Shilong
Published: January 2022

A photonics-assisted RF self-interference cancellation system with an improved signal to noise ratio (SNR) is proposed and demonstrated. The self-interference cancellation ratio of 32 dB and an improvement of SNR of 11 dB are achieved.
Deep-learning Fluorescence Microscopy for Capturing Biological Dynamics at High Spatiotemporal Resolution
Authors: Zhu Lanxin , Yi Chengqiang , Zhao Yuxuan , Fei Peng
Published: January 2022

Insufficient spatiotemporal performance is the major weakness of current 3D fluorescence microscopy. We report deep learning-enhanced fluorescence microscopy that can reconstruct dynamic signals at high spatiotemporal resolution.
Investigation of MPI Impact for Below Cut-Off Wavelength Transmission in G.654.E Fiber Link
Authors: Lin Jiachuan , Naghdi Behnam , Wang Lixian , Jiang Zhiping
Published: January 2022

We numerically study the MPI induced penalty for data transmission below G.654.E cut-off. Negligible impact is shown for short-C band while performance degradation is evaluated for O/E/S bands providing input for future comprehensive system analyses.
High-performance Rotation-decision Blind Phase Search Algorithm for M-QAM Signals
Authors: Wang Pengfei , Gao Mingyi , Cao Fengchu , You Xiaodi , Shen Gangxiang
Published: January 2022

We proposed a novel rotation-decision blind phase search algorithm for carrier phase recovery of M-QAM signals. For the scenarios of severe phase noise, the proposed method can achieve 10% BER improvement with the fast convergence.
Phase Regeneration for MDM Signals by Few Mode Phase Sensitive Amplification
Authors: Ye Baining , Du Jiangbin , Wang Zhaonian , He Zuyuan
Published: January 2022

MDM PSA for all-optical mode selective and mode equalized phase regenerations is proposed and investigated. The EVMs of regenerated MDM signal on two modes can be reduced by 16.854 dB and 18.022 dB respectively.
Physical Layer Security Encryption in CO-OFDM based on Chaotic 3D Constellation Scrambling
Authors: Zhang Yiqun , Jiang Ning , Liu Shiqin , Zhao Anke , Peng Jiafa , Qiu Kun
Published: January 2022

We propose and experimentally demonstrate a novel chaos-based 3D constellation scrambling scheme in CO-OFDM system. The experimental results show that the proposed encryption scheme supports simultaneous enhancement for physical layer security and transmission performance.
Peak Power Distribution based Nonlinear Parameter Optimization for Digital Back-propagation
Authors: Yang Meng , He Pinjing , Yang Aiying , Guo Peng
Published: January 2022

A nonlinear parameter optimized scheme based on peak power distribution is proposed for DBP algorithm. The 1 dB Q-factor gain is achieved in the simulation transmission of 32-GBaud PDM 16-QAM signal with a 24*100km single channel.
Security Enhancement for CO-OFDM/OQAM System using Twice Chaotic Encryption Scheme
Authors: Fang Xi , Zhou Yang , Xiao Ling , Zhao Cheng , Yu Zifang
Published: January 2022

In this paper, we propose a twice chaotic encryption scheme to improve the security of CO-OFDM/OQAM system. Simulation results show that the proposed scheme enhance the physical-layer security within the acceptable performance penalty.
High Performance In-line Mach-Zehnder Interferometer as Reference Arm for Vernier Effect Generation
Authors: Dai Maolin , Chen Zhenmin , Zhao Yuanfang , Fu H. Y.
Published: January 2022

A compact in-line fiber optic Mach-Zehnder interferometer is proposed with insensitivity to temperature, strain, RI and torsion, which can work as a stable and universal reference arm in the high-quality Vernier effect for sensitivity enhancement.
Compact Silicon Photonic Waveguide Crossings with Sub- 10-mdB Loss
Authors: Peng Yingying , Li Huan , Dai Daoxin
Published: January 2022

We have designed and experimentally demonstrated silicon photonic waveguide crossings for the TE fundamental mode with record-low loss of 6±2 mdB in the wavelength range of 1520-1560 nm.
Optically Centralized Beamforming for MmWave Cloud RAN Systems: Impact of Beam Alignment
Authors: Huang Huan , Peng Jie , Wang Xiaowen , Zhang Chongfu , Qiu Kun
Published: January 2022

In this paper, we investigate directional millimeter-wave cloud radio access network systems using optically centralized beamforming. To evaluate the impact of beam alignment, the beamforming gain function and the cumulative distribution function are analyzed.
Load-Balanced Protection for Mobile Edge Computing Services in Fiber-Wireless Access Networks
Authors: Wang Xinyu , Li Yongcheng , Zheng Danyang , Lin Jiemin , Shen Gangxiang
Published: January 2022

To protect mobile edge computing (MEC) services in a fiber-wireless (FiWi) access network, we propose a load-balanced protection (LBP) strategy. Simulations show that LBP strategy is efficient in terms of maximum load on servers and bandwidth resource consumption compared to two benchmark protection schemes.
Accurate Underwater Optical Wireless Communication (UOWC) Channel Model
Authors: Fang Chengwei , Li Shuo , Wang Ke
Published: January 2022

UOWC systems have been widely studied to achieve high speed communications. In this paper we establish an accurate model with both signal and background lights, incorporating the previously overlooked impact of incident angle.
A Q-Learning-Based Power Allocation Method for Two-Tier Heterogeneous Networks
Authors: Liu Qingyuan , Zhang Qi , Qian Jinxi , Chen Dong , Tao Ying , Tian Qinghua , Tian Feng , Zhao Yi , Yang Mai
Published: January 2022

A novel Q-learning-based power allocation method is proposed for two-tier heterogeneous networks (HetNets). Numerical results show that this method can balance the capacity, the quality of service (QoS) of users, fairness and power consumption.
Adjustable Window Based Online Scheduling in Mobile Fronthaul
Authors: Su Chen , Yu Hao , Zhang Jiawei , Ji Yuefeng
Published: January 2022

We propose an online scheduling scheme with adjustable transmission window in fronthaul. The simulation results show that our scheme improves 22.6% schedulability and 42.7% resource utilization on average than traditional schemes respectively.
Load Balanced Traffic Grooming in IP over Quasi-CWDM Network
Authors: Zhou Jiaqi , Cai Anliang , You Xiaodi , Li Yongcheng
Published: January 2022

We propose traffic grooming strategies to balance traffic loads in an IP over quasi-coarse wavelength division multiplexing (Quasi-CWDM) network. Results show that the proposed waveplane strategy is the most efficient in load balance in terms of the maximum number of used wavelengths and the variance of the numbers of wavelengths used in links.
Distributed-Bragg-reflector laser integrated with spot size converter for FMCW LiDAR System
Authors: Zhang Gong , Ding Zhihuan , Wang Kuankuan , Jiang Chun , Lu Qiaoyin , Guo Weihua
Published: January 2022

We demonstrate a distributed-Bragg-reflector (DBR) laser integrated with spot size converter (SSC). The power coupled into a lensed fiber increases to 64% at 120 mA gain current and 200 mA SOA current.
Photonic Unitary Neural Network Chip with Complex-valued Transformation Layer
Authors: Wang Ruiting , Wang Pengfei , Luo Guangzhen , Yu Hongyan , Zhou Xuliang , Zhang Yejin , Wang Wei , Pan Jiaoqing
Published: January 2022

We propose a complex-valued transformation layer whose architecture is compatible with the photonic unitary neural network chip. We simulate unitary neural networks on the MNIST dataset and complex-valued transformation layer can significantly improve the accuracy.
Self-injection Locked Quantum-dash Laser Source in Millimeter-wave-over-fiber 4 Gbits/s QPSK Transmission
Authors: Tareq Q. , Ragheb A. M. , Esmail M. A. , Alshebeili S. , Khan M. Z. M.
Published: January 2022

We demonstrate a 28-GHz millimeter-wave-over-fiber transmission employing self-injection-locked ~1610-nm InAs/InP quantum-dash dual-mode laser comb source. Successful transmission of 4-Gb/s QPSK data signal over 10-km single-mode fiber is achieved, strengthening its potential in next-generation networks
Numerical Analyzation of Distributed Feedback Lasers with Different Phase Shift Structures
Authors: Wang Bo , Zhou Peiqi , Wang Xingjun
Published: January 2022

We optimize phase shift structures of distributed feedback (DFB) lasers. For the multi-distributed phase shift laser, the output slope can reach up to 51.90% when the optimal cavity length is 2.2 mm.
Formation of Bound Soliton Molecules in Multimode Optical Fiber with Temporally Modulated Nonlinearities
Authors: Sakkaravarthi K. , Kanna T.
Published: January 2022

We investigate the formation of bound soliton molecules developed through a velocity resonance mechanism in a multicomponent system describing the beam propagation in multimode optical fiber with controllable coherent and incoherent nonlinearities by obtaining explicit analytical solution and explore their dynamics for various forms of nonlinearities.
Autonomous Control Model for C+L Multi-band Photonic Switch System using Machine Learning
Authors: Khan Ihtesham , Tunesi Lorenzo , Masood M Umar , Ghillino Enrico , Bardella Paolo , Carena Andrea , Curri Vittorio
Published: January 2022

We propose a data-driven technique for autonomous management of N×N photonic switching systems in a software-defined networking setup. This work aims to demonstrate the C+L multi-band switching system and proposes a softwarized model for control.
A Novel Dual-absorption Photodetector with High Bandwidth-Efficiency-Product
Authors: Houzeng Wang , Huijuan Niu , Chuanxing Jiang , Xinye Fan , Wenjing Fang , Xia Zhang
Published: January 2022

A novel high bandwidth-efficiency-product dual-absorption photodetector is designed. The 3dB bandwidth of 39.3GHz and the quantum efficiency of 63% are achieved, and thus the bandwidth-efficiency-product is improved by 30% compared with mushroom dual-absorption photodetector.
Silicon Nanophotonic Waveguide for High Degree Soliton Compression at 2.0 μm
Authors: Huang Jiayao , Ye Feng , Li Qian
Published: January 2022

Numerical simulation of cascaded higher-order soliton compression in the silicon nanophotonic waveguide is reported, where 1 ps initial pulse is compressed to 31.1 fs with a high compression factor of 32.17 at 2.0 μm.
Mode conversion based silicon Mach-Zehnder modulator with L-shaped PN junction for 0.37- V·cm vπ·lπ high efficiency modulation
Authors: Liu Jiacheng , Zhou Gangqiang , Du Jiangbing , Shen Weihong , Zhou Linjie , He Zuyuan
Published: January 2022

We reported a silicon modulator with L-shaped PN junction for high efficiency modulation based on mode conversion to recycle light twice within the modulator phase shifter. Record low vπ·lπ of 0.37 V·cm was experimentally demonstrated.
Mid-infrared subwavelength grating coupler
Authors: Chen Weicheng , Wan Dian , Wang Jiaqi , Yi Zou , Cheng Zhenzhou , Liu Tiegen
Published: January 2022

We demonstrated a focusing subwavelength grating coupler which has a maximum coupling efficiency of -9.7 dB at a center wavelength of 2.47 μm with a 1-dB bandwidth of 60 nm.
Design and Fabrication of High-Power Bottom-Emitting 980-nm VCSELs
Authors: Yan Weinian , Qiu Pingping , Li Ming , Jia Ruiwen , Wang Qiuhua , Zhao Lingjuan , Kan Qiang
Published: January 2022

In this study, 980-nm high-power bottom-emitting VCSELs are designed and simulated by PICS3D. A single VCSEL device with an active region aperture of 140μm and a peak pulsed power of 106mW@1A is fabricated.
Widely Tunable 1.3 μm InGaAlAs/InP DBR Laser
Authors: Zhu Xuyuan , La Xiaobo , Guo Jing , Liang Song
Published: January 2022

1.3 μm DBR laser having InGaAlAs gain material and butt-jointed InGaAsP DBR material is reported. The laser has an over 16 nm wavelength tuning range induced by self heating effect of the DBR section.
Wavelength Locking of Multi-Channel Interference Widely Tunable Laser
Authors: Wang Kuankuan , Chen Zifeng , Chen Quanan , Jiang Chun , Lu Qiaoyin , Lu Mingzhi , Guo Weihua
Published: January 2022

Wavelength locking of a widely tunable multi-channel interference laser is demonstrated for the first time, over a temperature variation range of 4.6°C if both the longitudinal mode and the reflection peak are locked simultaneously.
On-chip polarimeter via inverse design
Authors: Xie Youpeng , Zhou Changyu , Wei Zepeng , Xie Zhenwei , Lei Ting , Yuan Xiaocong
Published: January 2022

We propose a polarimeter with four ports via inverse design. The device is fabricated on a SOI. We use the polarimeter to retrieve Stokes parameters and achieve high-speed Stokes vector direct detection.
All Solid-state Lidar Based on Lens Assisted Beam Steering and Frequency-modulated Continuous Wave Ranging
Authors: Cao Xianyi , Wu Kan , Li Chao , Long Jiaxuan , Zhang Guangjin , Chen Jianping
Published: January 2022

A Lidar system based on lens assisted integrated two-dimension beam steering at 1550 nm is utilized in frequency-modulated continuous wave ranging. This Lidar system has 4×4 scanning directions and 80 m ranging distance.
Enhanced Absorption of Ge Nanostripe Arrays in the Near-infrared Band
Authors: Zhang Yijin , Cao Xiyuan , Jin Yi , Wu Aimin
Published: January 2022

We propose a Ge nanostripe array to realize strong absorption in the near-infrared band. The maximum absorption is approximately 95% around 1310 nm for TE-polarized incidence, which is increased by 4 times compared to the unstructured planar structure with the same thickness. The experimental result verifies the simulated prediction consistently.
Humidity Sensor based on Mach-Zehnder Interferometer Coated with Graphene Oxide
Authors: Zhu Yu , Jiang Chen , Ma Yuehui , Chen Long , Liu Yunqi
Published: January 2022

In this work, a graphene oxide-coated Mach-Zehnder interferometer is proposed for relative humidity sensing applications. The sensor has a high sensitivity with 0.212 dB/%RH in a RH range of 30-70%.
A Novel High-Speed Dual-Absorption Photodetector with Microstructure
Authors: Du Jiawei , Huang Yongqing , Ren Ren , Duan Xiaofeng , Liu Kai , Yang Yisu , Ren Xiaomin
Published: January 2022

A dual-absorption photodetector with a cylindrical hole in the top photodiode is proposed. Compared with the traditional mesa-structure dual-absorption photodetector, the novel photodetector can increase the 3dB bandwidth by 37.7% with responsivity of 0.642 A/W.
Multi-octave linearized analog photonic link based on double MZM and DSP technique
Authors: Gao Yiran , Wu Zhonghan , Chen Jingyue , Zhang Tian , Dai Jian , Xu Kun
Published: January 2022

A multi-octave linearized analog photonic link was theoretically proposed and experimentally verified. The SFDR3 and SFDR2 were 116.31 ··/2/3 and 103.74 dB·Hz1/2. respectively.
Analog bandwidth optimization in photonic sampling system based on cavity-less optical pulse source
Authors: Li Zhengkai , Xu Ying , He Yutong , Lv Weiqiang , Fu Zhenwei , Zhang Zhiyao , Zhang Shangjian , Li Heping , Liu Yong
Published: January 2022

We demonstrate an approach to optimize the analog bandwidth of a photonic sampling system based on cavity-less optical pulse source. In the experiment, the 3-dB analog bandwidth constrained by the optical source is increased from multi-GHz to 35 GHz.
An ENOB-enhancement scheme for an OADC based on a phase-shifted quantizer
Authors: Tao Ran , Qiu Jifang , Liu Chang , Zhang Bowen , Wu Jian
Published: January 2022

A novel scheme is proposed to enhance the ENOB of an OADC based on a phase-shifted quantizer by 1 bit. The operation principle has been derived. An OADC based on this scheme was designed and simulated, achieved 4.31 bit ENOB.
Photonic phase shifter of phase-coded microwave signal with programmabilities
Authors: Zhai Wensheng , Xin Yunxia , Li Wenli , Yang Hai
Published: January 2022

We propose a photonic scheme to generate a programmable frequency phase-coded microwave signal based on a photonic phase shifter. The experimental results implement 30 GHz signal with the coding rate of 3 Gb/s.
An Integrated Wireless Communication and Sensing System at U-band Based on Heterodyne Detection
Authors: Lei Mingzheng , Li Aijie , Zhang Jiao , Hua Bingchang , Cai Yuancheng , Zou Yucong , Xu Weiliang , Zhu Min
Published: January 2022

We propose an integrated wireless communication and radar sensing system enabled by photonics. The proposed system simultaneously achieves a 10-Gbit/s wireless transmission rate and the Range-Doppler decoupling at U-band based on optical heterodyne detection.
Arbitrary Waveform Generation Technology Based on Dual-polarization Dual-drive Mach-Zehnder Modulator
Authors: Gao Ruirui , Hu Jingjing , Li Jian , Zhang Jiali , Liu Qianxue , Li Xiaozhou , Han Xiuyou , Zhao Mingshan , Gu Yiying
Published: January 2022

An arbitrary waveform generator based on a dual-polarization dual-drive Mach-Zehnder modulator (Dpol-DDMZM) is proposed, which is verified by theoretical analysis and simulation using OptiSystem demo, 8GHz sawtooth pulse trains are experimentally demonstrated.
Design and Simulation of Nano Scale Plasmonic Temperature Sensor using Ethanol-Filled Rectangular Cavity Equipped with Polygonal Patches
Authors: Moeinimaleki Babak , Kaatuzian Hassan , Livani Abdolber Mallah
Published: January 2022

this paper proposes design of a nano scale plasmonic waveguide temperature sensor coupled with a cavity containing ethanol. Our 2D-FDTD simulations demonstrate considerable improvement for thermal sensitivity up to 0.97 nm/°C compared with previous reports.
Dynamic Measurement of Projected Area, Average Phase, and Entropy of Living U87-MG Cells Based on Digital Holographic Microscopy
Authors: Ma Ning , Huang Sujuan , Yan Cheng
Published: January 2022

Dynamic measurement of projected area, average phase, and entropy of living U87-MG cells based on digital holographic microscopy (DHM), providing a dynamic and quantitative method for pathological research.
Gain Characteristics of Few-mode Erbium-doped Fiber Amplifiers Pumped with Complex Mode Field
Authors: Jiang Xinrui , Wu Baojian
Published: January 2022

We present a theoretical model of few-mode erbium-doped fiber amplifiers with complex mode fields and show that a tunable differential mode gain (DMG) can be realized by changing the components of LP11
e,x
and LP11
o,y
.
Effective Positioning Scheme Based on Visible Light Communication for Vehicular Applications
Authors: Zhou Biao , He Jing , Yang Yiting , Xu Lin , He Jing
Published: January 2022

An effective vehicle positioning scheme using a novel sampling scheme and monocular ranging model based on visible light communication is proposed. Experimental results show it achieves BER lower than 3.8×10−3 with the mean positioning error below 0.145 meters.
Optical Performance Monitoring for Intra-LP-mode Dispersions of Non-circularly-symmetric LP Modes in Weakly-coupled FMFs
Authors: Liu Jiaxin , Zuo Mingqing , Ge Dawei , Gao Yuyang , He Yongqi , Li Juhao
Published: January 2022

Based on the analysis of intra-LP-mode dispersion (ILMD) in weakly-coupled FMFs, we propose a method for ILMD monitoring based on channel estimation for the first time and experimentally demonstrate its feasibility in coherent MDM systems.
2×20G Baud Few-Mode Fiber Transmission with a Jones-Volterra training sequence
Authors: Wang Chuxuan , Tian Feng , Wu Tianze , Gu Yu , Wang Jue , Zhang Qi , Liu Bo , Tian Qinghua , Xin Xiangjun
Published: January 2022

We experimentally demonstrated a 2×20G Baud PAM4 few mode fiber transmission and proposed a Jones-Volterra training sequence to mitigate the device nonlinearities and dynamic crosstalk. The proposed algorithm can achieve a 0.5dB received power improvement.
Channel modeling and compensation of ultra-fast spike-shaped RSOP caused by lightning
Authors: Zhao Wanxin , Zhao Jiarun , Zhang Hanbo , Gao Jian , Zhang Xiaoguang
Published: January 2022

This paper proposes an ultra-fast spike-shaped RSOP model to simulate the effects of lightning. In the case of considering the first-order PMD, the sliding window Kalman filter is used to track and compensate it.
Modulation Schemes of 6PolSK-QPSK in repeaterless transmission system
Authors: Zhang Yichao , Li Yupeng
Published: January 2022

As a combination of PM-QPSK and PS-QPSK, 6PolSK-QPSK has better spectral efficiency. A modulation scheme is proposed to generate 6PolSK-QPSK signal transmission, constructs VPI system structure, and realizes the 40Gbps data transmission in this paper.
Sensitivity optimization for fault detection of few mode fiber based on high order spatial mode with dynamic crosstalk elimination
Authors: He Zhenxing , Liu Feng , Xu Lixin , Zhang Wenping , Hu Guijun
Published: January 2022

Aiming at the influence of cascading crosstalk on the loss of high-order mode faults, this paper proposes a waveform reconstruction method, which can effectively eliminate the effect of dynamic crosstalk and optimize the detection sensitivity of few-mode fiber link faults.
Performance Comparison of Probabilistic Shaping SVDD System and Classic SVDD System
Authors: Cao Lingguo , Xu Hengying , Bai Chenglin , Yang Lishan , Sun Weibin , Yu Xinkuo , Qin Peng , Tang Xue
Published: January 2022

We compare the performance of PS-SVDD system and classic SVDD system for the first time. Simulation results show that PS-SVDD 16/64QAM systems gain 0.42/0.70dB OSNR improvements, respectively, and achieve higher MI than classic SVDD system.
Dispersion optimization of comb-like supercontinuum generated by two-pulse bound state
Authors: Chen Shijie , Zhou Renlai , Liu Xuanyi , Fu H. Y. , Li Qian
Published: January 2022

We theoretically and experimentally demonstrate the generation of comb-like supercontinuum by inputting the two-pulse bound state. Through detailed dispersion optimization, the flatness, comb depth and bandwidth can be improved.
100m Free-space Visible Light Communication at 6 Gbps GS-APSK Modulation Utilizing a GaN Blue LD
Authors: Qin Guojin , Bian Qijun , Niu Wenqing , Chi Nan
Published: January 2022

100m free-space visible light communication at 6 Gbps utilizing a GaN blue laser diode has been experimentally demonstrated. The transmission analysis shows the feasibility of inter-satellite optical communication.
Selective and simultaneous detection of cell cytoplasm and nucleus using plasmon waveguide resonance based on self-referenced directional enhanced Raman scattering
Authors: Chang Huan , Li Zhipei , Zhou Sitong , Wang Fei , Gao Ran , Xin Xiangjun
Published: January 2022

A self-referenced plasmon waveguide resonance Raman scattering has been proposed and experimentally demonstrated, which not only realize a rapid label-free detection of living cell, but also distinguishes the cell cytoplasm and nucleus simultaneously.
Delta-Sigma Modulation with Coherent Detection for High-Fidelity 4194304-QAM Transmission at 71.5dB SNR
Authors: Zhu Yixiao , Fang Xiansong , Yin Longjie , Zhang Lei , Zhang Fan , Hu Weisheng
Published: January 2022

We experimentally demonstrate 1/2-bit delta-sigma modulation and transmission in a 40Gbaud QPSK/16-QAM coherent system. After 24km SSMF transmission, up to 2.5Gbaud 4194304-QAM Nyquist signal is successfully transmitted at 71.5dB SNR.
All-optical Synthesis of 100Gbaud PDM 16-QAM Nonlinear Frequency Division Multiplexing Signal
Authors: Chen Xinyu , Fang Xiansong , Yang Fan , Zhang Fan
Published: January 2022

We generate a 100Gbaud nonlinear frequency division multiplexing (NFDM) signal with all-optical synthesis of spectral slices for the first time. A record single-lane data rate of 666.7 Gb/s is achieved with PDM 16-QAM NFDM signaling.
Ultrafast agile optical beam steering based on arrayed diffractive elements
Authors: Zang Zihan , Xu Yunpeng , Wang Haoqiang , Li Zhi , Han Yanjun , Li Hongtao , Fu Hongyan , Luo Yi
Published: January 2022

We propose and demonstrate a low-cost diffractive element to achieve wide-angle, two-dimensional, and complex-mode beam steering, thus breaking the limitations in field of view and flexibility for conventional beam steering by spatial dispersion.