bluuebunny/crossref_metadata_2025 huggingface dataset:
Protocol for a randomised controlled feasibility trial of exercise rehabilitation for people with postural tachycardia syndrome: the PULSE study
Authors: McGregor Gordon , Hee Siew Wan , Eftekhari Helen , Holliday Nikki , Pearce Gemma , Sandhu Harbinder , Simmonds Jane , Joshi Shivam , Kavi Lesley , Bruce Julie , Panikker Sandeep , Lim Boon , Hayat Sajad
Published: October 2020

Background

Postural orthostatic tachycardia syndrome (POTS) is an autonomic nervous system disorder causing an abnormal cardiovascular response to upright posture. It affects around 0.2% of the population, most commonly women aged 13 to 50 years. POTS can be debilitating; prolonged episodes of pre-syncope and fatigue can severely affect activities of daily living and health-related quality of life (HRQoL). Medical treatment is limited and not supported by randomised controlled trial (RCT) evidence. Lifestyle interventions are first-line treatment, including increased fluid and salt intake, compression tights and isometric counter-pressure manoeuvres to prevent fainting. Observational studies and small RCTs suggest exercise training may improve symptoms and HRQoL in POTS, but evidence quality is low.

Methods

Sixty-two people (aged 18–40 years) with a confirmed diagnosis of POTS will be invited to enrol on a feasibility RCT with embedded qualitative study. The primary outcome will be feasibility; process-related measures will include the number of people eligible, recruited, randomised and withdrawn, along with indicators of exercise programme adherence and acceptability. Secondary physiological, clinical and health-related outcomes including sub-maximal recumbent bike exercise test, active stand test and HRQoL will be measured at 4 and 7 months post-randomisation by researchers blinded to treatment allocation. The PostUraL tachycardia Syndrome Exercise (PULSE) intervention consists of (1) individual assessment; (2) 12-week, once to twice-weekly, supervised out-patient exercise training; (3) behavioural and motivational support; and (4) guided lifestyle physical activity. The control intervention will be best-practice usual care with a single 30-min, one-to-one practitioner appointment, and general advice on safe and effective physical activity. For the embedded qualitative study, participants (n = 10 intervention, n = 10 control) will be interviewed at baseline and 4 months post-randomisation to assess acceptability and the feasibility of progressing to a definitive trial.

Discussion

There is very little high-quality research investigating exercise rehabilitation for people with POTS. The PULSE study will be the first randomised trial to assess the feasibility of conducting a definitive multicentre RCT testing supervised exercise rehabilitation with behavioural and motivational support, compared to best-practice usual care, for people with POTS.

Trial registration

ISRCTN45323485 registered on 7 April 2020.
Education and social support: do migrants benefit as much as natives?
Authors: Brandt Jana , Hagge Kyra Selina
Published: October 2020

Education and having access to social support play a vital role in the human life. Integrated and better-educated people demonstrate an increased personal health and well-being. Social isolation, on the contrary, can affect not only the personal development, but also pertains to society. These topics are especially relevant in the current migration debate. Our paper examines the link between schooling and the individuals’ probability to receive different types of social support, in particular emotional, instrumental, informational, and appraisal support. Using logit and ordinal logit regressions on cross-sectional micro-data provided by the SOEP, we distinguish between two subgroups, the native population and people who migrated to Germany. Our findings confirm that higher levels of education increase the probability to access social support as well as the number of support providers in the network. Migrants are disadvantaged when it comes to the access of social support. However, our results suggest no significant negative returns to education for people with migration experiences.
Estimation of SIR model’s parameters of COVID-19 in Algeria
Authors: Lounis Mohamed , Bagal Dilip Kumar
Published: October 2020

Background

The coronavirus disease 2019 (COVID-19) is reported in Algeria on February 25th, 2020. Since then, the number is still increasing leading to a total number of 36,699 cases and 1333 deaths on August 12th, 2020. Thus, comprehension of the epidemic curve is very important to predict its evolution and subsequently adapt the best prevention strategies. In this way, the current study was conducted to estimate the parameters of the classical SIR model and to predict the peak of the COVID-19 epidemic in Algeria using data from February 25th, 2020 to August 12th, 2020.

Results

Results showed that the peak of the epidemic will be reached on September 8th, 2021 and the total infected persons will exceed 800,000 cases at the end of the epidemic. Also, more than 15 million persons will be susceptible. The reproduction number (R0) is estimated at 1.23254.

Conclusion

These results may be helpful for the Algerian authorities to adapt their strategies and may be taken into consideration in the future phase of discontainment.
Recent advances in multi-dimensional metasurfaces holographic technologies
Authors: Zhao Ruizhe , Huang Lingling , Wang Yongtian
Published: October 2020

Holography has attracted tremendous interest due to its capability of storing both the amplitude and phase of light field and reproducing vivid three-dimensional scenes. However, the large pixel size, low resolution, small field-of-view (FOV) and limited space-bandwidth of traditional spatial light modulator (SLM) devices restrict the possibility of improving the quality of reconstructed images. With the development of nanofabrication technologies, metasurfaces have shown great potential in manipulating the amplitude, phase, polarization, frequency or simultaneously multiple parameters of output light in ultrashort distance with subwavelength resolution by tailoring the scattering behaviour of consisted nanostructures. Such flexibilities make metasurface a promising candidate for holographic related applications. Here, we review recent progresses in the field of metasurface holography. From the perspective of the fundamental properties of light, we classify the metasurface holography into several categories such as phase-only holography, amplitude-only holography, complex amplitude holography and so on. Then, we introduce the corresponding working principles and design strategies. Meanwhile, some emerging types of metasurface holography such as tunable holography, nonlinear holography, Janus (or directional related) and bilayer metasurfaces holography are also discussed. At last, we make our outlook on metasurface holography and discuss the challenges we may face in the future.
Sentinel Node Biopsy Versus Low Axillary Sampling in Predicting Nodal Status of Postchemotherapy Axilla in Women With Breast Cancer
Authors: Parmar Vani , Nair Nita S. , Vanmali Vaibhav , Hawaldar Rohini W. , Siddique Shabina , Shet Tanuja , Desai Sangeeta , Rangarajan Venkatesh , Patil Asawari , Gupta Sudeep , Badwe Rajendra A.
Published: October 2020

PURPOSE

We tested low axillary sampling (LAS) and sentinel node biopsy (SNB) performed in the same patient to predict axillary nodal status post–neoadjuvant chemotherapy (NACT) in women undergoing elective breast surgery, clinically N0 after NACT.

PATIENTS AND METHODS

A total of 751 women clinically node negative post-NACT underwent LAS (excision of lymph node [LN] and fat below first intercostobrachial nerve). Of these women, 730 also underwent SNB by dual technique (methylene blue plus radioisotope). SNB (defined as targeted plus palpable LNs) and LAS specimens were distinctly examined for metastasis. All patients underwent completion axillary lymph node dissection. Post-NACT, 290 (38.6%) of 751 women had residual positive lymph nodes on pathology.

RESULTS

The median clinical tumor size was 5 cm (range, 1-15 cm), and 533 (71%) of patients were N1 or N2 at presentation. Targeted sentinel node (SN) identification was 85.7% (626 of 730; median, two LNs); SN with palpable nodes was found in 95.2% (695 of 730; median, five LNs); LAS node was identified in 98.5% (740 of 751; median, seven LNs). In all but one case, the SN was found within the LAS specimen. The false negative rate (FNR) of SNB (blue, hot, and adjacent palpable nodes) was 19.7% (47 of 238; one-sided 95% CI upper limit, 24.0), compared with an FNR of 9.9% for LAS (29 of 292; one-sided 95% CI upper limit, 12.8; P < .001). If SNB was confined to blue/hot node, excluding adjacent palpable nodes, the FNR was 31.6% (74 of 234; one-sided 95% CI upper limit, 36.6). The FNR could be brought down to < 8.8% if three or more LNs were identified by LAS.

CONCLUSION

LAS is superior to SNB in identification rate, FNR, and negative predictive value in predicting node-negative axilla post-NACT. LAS can be safely used to predict negative axilla with < 10% chance of leaving residual disease.
Returning Again
Authors: Hodkinson James
Published: October 2020

This article examines the return of the dead to life in two television drama series of the last decade, Les Revenants (The Returned; 2012–15, Canal) and Glitch (2015–19, ABC Studios). The returning dead do not figure as classic undead figures, as ghosts or zombies, instead returning to life exactly as they were at the point of death and in search of a renewed purpose and an ultimate destiny. This, the article suggests, can constitute a form of latter-day resurrection. The article shows how both series present established religion as incapable of recognizing the return of the dead, while science and the secular state are also never wholly able to explain and manage these apparent miracles. The return of this seemingly religious trope to an ostensibly secular world and the mutual jostling and overlapping of theological, scientific, and aesthetic discourses, as they seek to represent and explain the mystery, not only constitutes a postsecular theme but also occasions the search, at times inherent to artistic form, at times explicit and self-reflexive, for an appropriately postsecular televisual aesthetics.
A Sinner or a Criminal? The Judgment of Oleg Mavromatti under Article 282
Authors: Filippova Darja
Published: October 2020

This article discusses the performance events “Do Not Believe Your Eyes” (2000) and “Ally/Foe” (2010) by Russian artist Oleg Mavromatti in the framework of a single durational event that critiques the sacralization of public space in Russia. The public reception of the performances is mediated by attitudes toward Russian Criminal Law Article 282, the so-called law against religious offenses, in a sociopolitical climate where Orthodoxy is conflated with state patriotism. Through the appropriation of the colloquially resonant behavioral paradigm of the holy fool, the author analyzes how Mavromatti’s performance event critiques the concept of “judgment” (by an Orthodox state and by an Orthodox public) from within a culturally resonant religious tradition. The artist’s intervention calls for a secular separation of church and state, but by doing so from within a religious tradition, it illuminates the function of the postsecular as a mode of engagement in contemporary Russian culture.
A node-based informed modularity strategy to identify organizational modules in anatomical networks
Authors: Esteve-Altava Borja
Published: October 2020

The study of morphological modularity using anatomical networks is growing in recent years. A common strategy to find the best network partition uses community detection algorithms that optimize the modularity Q function. Because anatomical networks and their modules tend to be small, this strategy often produces two problems. One is that some algorithms find inexplicable different modules when one inputs slightly different networks. The other is that algorithms find asymmetric modules in otherwise symmetric networks. These problems have discouraged researchers to use anatomical network analysis and boost criticisms to this methodology. Here, I propose a node-based informed modularity strategy (NIMS) to identify modules in anatomical networks that bypass resolution and sensitivity limitations by using a bottom-up approach. Starting with the local modularity around every individual node, NIMS returns the modular organization of the network by merging non-redundant modules and assessing their intersection statistically using combinatorial theory. Instead of acting as a black box, NIMS allows researchers to make informed decisions about whether to merge non-redundant modules. NIMS returns network modules that are robust to minor variation and does not require optimization of a global modularity function. NIMS may prove useful to identify modules also in small ecological and social networks.
Perspectives on public health interventions in the management of the COVID-19 pandemic in Thailand
Authors: Pan-ngum Wirichada , Poomchaichote Tassawan , Peerawaranun Pimnara , Kulpijit Natinee , Osterrieder Anne , Waithira Naomi , Mukaka Mavuto , Naemiratch Bhensri , Chanviriyavuth Rita , Asarath Supa-at , Ruangkajorn Supanat , Kannika Noppadon , Cheah Phaik Yeong
Published: October 2020

Background: Any government needs to react quickly to a pandemic and make decisions on healthcare interventions locally and internationally with little information regarding the perceptions of people and the reactions they may receive during the implementation of restrictions.

Methods: We report an anonymous online survey in Thailand conducted in May 2020 to assess public perceptions of three interventions in the Thai context: isolation, quarantine and social distancing. A total of 1,020 participants, of whom 52% were women, responded to the survey.

Results: Loss of income was the main concern among respondents (>80% for all provinces in Thailand). Traditional media and social media were important channels for communication during the pandemic. A total of 92% of respondents reported that they changed their social behaviour even before the implementation of government policy with 94% reporting they performed social distancing, 97% reported using personal protective equipment such as masks and 95% reported using sanitizer products.

Conclusions: This study showed a high level of compliance from individuals with government enforced or voluntarily controls such as quarantine, isolation and social distancing in Thailand. The findings from this study can be used to inform future government measures to control the pandemic and to shape communication strategies.
e-learning manual "History of everyday life"
Authors: Barinova Ekaterina
Published: October 2020

Учебно-методическое пособие является вспомогательным материалом для активной формы изучения дисциплины «История повседневности». В нем изложены узловые вопросы и наиболее важный материал курса, представлены методические рекомендации по решению практических исторических задач, кейсов, тестов, с помощью которых обучающиеся подготовятся к зачету, в увлекательной форме используют теоретические знания в решении практических задач. В пособии представлены взгляды исследователей на место повседневности в социокультурной истории, формах ее анализа в исторической науке; дана характеристика основных исторических типов повседневности. Выделены базовые понятия истории повседневности, проанализирована специфика повседневной жизни на различных этапах российской истории. В учебно-методическом пособии представлены материалы для подготовки к практическим занятиям; творческим проектам; необходимые для описания презентации предметов повседневности; подготовки сообщения, доклада, мультимедийного продукта. В пособии представлены тестовые и творческие задания. Приведены примерные вопросы к зачету, а также учебники и учебные пособия, рекомендуемые для изучения курса и подготовки к итоговой аттестации.
Strategic Sourcing Under Severe Disruption Risk: Learning Failures and Under-Diversification Bias
Authors: Goldschmidt Kyle , Kremer Mirko , Thomas Douglas J. , Craighead Christopher W.
Published: October 2020

Problem definition: We study sourcing behavior in severe conditions where supply disruptions are rare but carry the potential of wiping out several rounds worth of a firm’s profit. Academic/practical relevance: The tradeoff between scale economies from supplier consolidation and risk mitigation from supplier diversification is at the core of firms’ sourcing strategy and one that is empirically understudied. Methodology: We study supplier diversification through a behavioral lens and test theoretically derived predictions under controlled laboratory conditions. Results: Our data provide strong evidence for under-diversification. We posit that this pattern is partly because of the fact that investing in supplier diversification involves an upfront cost to achieve a delayed, and rarely encountered, benefit. Managerial implications: Under-diversification bias is costly, and its causes are difficult to overcome, presenting firms with the daunting task of devising debiasing mechanisms that reinforce a supplier diversification strategy when the rarity of disruptions almost always render supplier consolidation the ex post preferred strategy.
3D printed Topologically Protected Terahertz Waveguides
Authors: Khan Muhammad Talal Ali , Li Haisu , Duong Nathan Nam Minh , Blanco-Redondo Andrea , Atakaramians Shaghik
Published: October 2020

We demonstrate an all-metallic terahertz topological waveguide using cost-effective 3D printing technique. The experimental results indicate guiding of the mode within the topological band gap in the bianisotropic medium while no transmission in gapless state.
Effective-Medium-Cladded Dielectric Waveguides Towards Terahertz Integrated Platform
Authors: Gao Weijie , Lee Wendy Suk Ling , Yu Xiongbin , Fujita Masayuki , Nagatsuma Tadao , Fumeaux Christophe , Withayachumnankul Withawat
Published: October 2020

This paper investigates terahertz dielectric waveguides cladded by in-plane effective media. The whole structure is fabricated from only a low-loss intrinsic silicon wafer and can potentially expand into a terahertz integrated platform.
Experimental realization of a terahertz meta-lattice
Authors: Wang Qigejian , Shahraam Afshar V. , Atakaramians Shaghik
Published: October 2020

We experimentally demonstrate a single-layered fiber terahertz meta-lattice that can act as terahertz magnetic and electric mirrors. The ability to control THz radiation with metalattice may find use in THz beam forming applications.
1000-mode frequency multiplexed singly-resonant photon pairs
Authors: Ikuta Rikizo , Tani Ryoya , Ishizaki Masahiro , Miki Shigehito , Yabuno Masahiro , Terai Hirotaka , Imoto Nobuyuki , Yamamoto Takashi
Published: October 2020

We demonstrated a frequency-multiplexed photon pair generation over 1000 modes by using a nonlinear optical waveguide inside a cavity which confines only signal photons without confining idler photons and the pump light.
Demonstration of an Exponential Advantage in Communication Complexity via the Quantum Switch
Authors: Tischler Nora , Wei Kejin , Zhao Si-Ran , Li Yu-Huai , Arrazola Juan Miguel , Liu Yang , Zhang Weijun , Li Hao , You Lixing , Wang Zhen , Chen Yu-Ao , Sanders Barry C. , Zhang Qiang , Pryde Geoff J. , Xu Feihu , Pan Jian-Wei
Published: October 2020

The quanhim switch is a tool that allows coherently controlling the order in which two operations are applied. We report the first experimental demonstration of the exponential advantage in communication complexity enabled by this tool.
Laser pulses with Quantum-Random Polarisation
Authors: Little Douglas J. , Kitzler O. , Gilchrist A. , Mildren R. P.
Published: October 2020

We report the generation of Raman laser pulses in diamond with quantum-random polarisation, whereby laser pulses exhibit a coherent, well-defined, linear polarisation with an orientation that is random from pulse to pulse. © 2020 The Author(s)
Optical reflectance of clustered nanostructures: a Finite-Difference Time-Domain and optical coherence tomography approach
Authors: Chen Si , Ge Xin , Chen Shufen , Liang Haitao , Liu Linbo
Published: October 2020

We aim to understand the reflectance signals from clustered nanoscale scatterers in cells. We conducted FDTD simulations and cellular-resolution OCT imaging, and interpret reflectance signals through correlation between simulation and experimental results. © 2020 The Author(s)
Towards Photonic Lantern-Based Microendoscopy
Authors: McNicholl D. , Li S. , Choudhury D. , Repetti A. , Gris-Sauchez I. , Whyte G. , Birks T. A. , Phillips D. B. , Wiaux Y. , Thomson R. R.
Published: October 2020

Photonic lanterns adiabatically couple light between an array of single mode waveguides and a multimode waveguide. We discuss how these devices open up powerful new opportunities in microendoscopy © 2020 The Author(s)
On-chip optical image processing with plasmonic metasurfaces
Authors: Wesemann Lukas , Davis Timothy , Roberts Ann
Published: October 2020

We propose the utilization of plasmonic resonant wave-guide gratings for ultra-compact image processing in transmission. We experimentally demonstrate two-dimensional edge-detection in amplitude images and contrast enhancement of images of biological samples. © 2020 The Author(s)
Dielectric metasurfaces for nonlinear frequency conversion
Authors: Neshev Dragomir N.
Published: October 2020

We review the recent advances in nonlinear frequency conversion in III-V semiconductor nanoantennas. We demonstrate the control of directionality of emission in the processes of second-harmonic generation, spontaneous parametric down-conversion and nonlinear imaging. © 2020 The Author(s) OCIS codes: (160.3918) Metamaterials; (190.4975) Parametric processes
Massively parallel coherent LiDAR using dissipative Kerr solitons
Authors: Riemensberger Johann , Lukashchuk Anton , Karpov Maxim , Lucas Erwan , Weng Wenle , Liu Junqiu , Kippenberg Tobias J.
Published: October 2020

We demonstrate an architecture for massively parallel frequency-modulated continuous wave (FMCW) laser ranging (LiDAR) by transferring linear chirps of a single narrow linewidth laser onto all soliton comb teeth though generation of a dissipative Kerr soliton in an integrated Si3N4 microresonator. © 2020 The Author(s)
Tunable microwave photonic filter based on ultra-high-Q silicon racetrack-resonator with a large free-spectral range
Authors: Xie Yiwei , Zhang Long , Dai Daoxin
Published: October 2020

We present a silicon racetrack-resonator based on a modified Euler curve for high-performance microwave photonic filters. It has a high Q-factor of 7×105, free spectral range of 0.73 nm, and tuning range of 92 GHz. © 2020 The Author(s)
InP based SWIR dual-band photodetector
Authors: Xie Zongheng , Deng Zhuo , Chen Baile
Published: October 2020

InP based near infrared/extended-short wave infrared dual band photodetector has been demonstrated. The results show the potential for monolithically growing dual band SWIR photodetector on InP substrate.
0.32 THz dual circularly polarized reflectarray
Authors: Zhu Jianfeng , McGloin David , Yang Yang , Liu Baolei
Published: October 2020

A terahertz (THz) reflect-array is proposed. Dual circularly polarized (left- and right-hand-circular-polarizations) collimated beams are independently manipulated. In our model, the left-hand-circularly-polarized and right-hand-circularly-polarized beams reflect at 23-degrees along the y-direction and x-direction respectively.
Visible to Long-Wave Infrared Photodetectors based on Copper Tetracyanoquinodimethane (CuTCNQ) Crystals
Authors: Balendhran Sivacarendran , Hussain Zakir , Shrestha Vivek R. , Cadusch Jasper , Ye Ming , Kim Hyungjin , Ramanathan Rajesh , Bullock James , Javey Ali , Bansal Vipul , Crozier Kenneth B.
Published: October 2020

We demonstrate room-temperature photodetectors at wavelengths from visible (450 nm, 532 nm) to near- (850 nm), short-wave (1550 nm), mid-wave (4.5 µm) and long-wave (8.35 µm) infrared. These are based on drop-cast Cu TCNQ crystals.
Single silicon vacancy centers in diamond fabricated by focused femtosecond laser pulses
Authors: Ju Zhiping , Rong Youying , Shen Si , Wu Botao , Wu E
Published: October 2020

We generated single negatively charged silicon vacancy color centers on the surface of the diamond by focusing a femtosecond laser on top of a high-purity diamond coated with a layer of Si nanoballs.
Generation of heralded entangled photon combs at telecom wavelength with rubidium Rydberg atom cavity QED
Authors: Ghosh Sutapa , Rivera Nick , Eisenstein Gadi , Kaminer Ido
Published: October 2020

We proposed a protocol to generate entangled photon-comb pairs using rubidium Rydberg atoms inside an optical cavity. Rydberg blockade isolates a single excitation and the heralding enables non-destructive detection of the presence of photon-pairs.
Enhanced self-phase modulation in silicon-on-insulator nanowires integrated with 2D layered graphene oxide films
Authors: Zhang Yuning , Wu Jiayang , Yang Yunyi , Qu Yang , Jia Linnan , Moein Tania , Jia Baohua , Moss David J.
Published: October 2020

Two-dimensional layered graphene oxide (GO) films are integrated with silicon-on-insulator nanowires to experimentally demonstrate enhanced self-phase modulation, achieving high broadening factor of up to 4.14 for a device patterned with 0.4-mm-long, 10 layers of GO.
Long-Wave Infrared Photodetectors Based on Platinum Diselenide
Authors: Azar Nima Sefidmooye , Shrestha Vivek Raj , Bullock James , Amani Matin , Kim Hyungjin , Javey Ali , Crozier Kenneth B.
Published: October 2020

We demonstrate long wave infrared photodetectors based on the transition metal dichalcogenide platinum diselenide (PtSe2) in its bulk form for the first time to our knowledge. Fabricated devices show sub-millisecond response times.
Measuring Thermodynamic Properties of Gas Molecules with a High-Resolution Frequency Comb Spectrometer
Authors: Karim Faisal , Scholten Sarah K. , Perrella Christopher , Luiten Andre N.
Published: October 2020

We demonstrate complete thermodynamic characterization of a gas by extracting its temperature, pressure and concentration, all from a single spectroscopic measurement, while simultaneously performing gas compositional analysis using a high-resolution frequency comb spectrometer.
Chromatic dispersion characterization for meter-long CMOS compatible spiral waveguides
Authors: Zeng Lanqian , Wang Linghua , Li Yuhua , Chu Sai T. , Little Brent E. , Wang Shao Hao
Published: October 2020

We demonstrated that the chromatic dispersion of CMOS-compatible waveguide sets increases with their thickness from -465 to 45 ps/nm/km by extending the measuring range of interferometer-based scheme beyond the maximum length of optical delay line.
Terahertz Slab-Mode Beam Launchers using Photonic Crystal Waveguides and Integrated Optics
Authors: Headland Daniel , Withayachumnankul Withawat , Fujita Masayuki , Nagatsuma Tadao
Published: October 2020

Terahertz systems typically depend on free-space optics, which are bulky and require manual alignment. We propose slab-mode beams using photlithographically-etched integrated optics as a replacement, and experimentally demonstrate two photonic crystal waveguide-fed slab-mode beam launchers.
Monitoring Water Dynamics in Plants using Laser Feedback Interferometry
Authors: Singh Khushboo , Bandyopadhyay Aparajita , Bertling Karl , Lim Yah Leng , Gillespie Tim , Robinson Ashley , Indjin Dragan , Han Yingjun , Li Lianhe , Linfield Edmund H. , Davies A. Giles , Dean Paul , Rakic Aleksandar D. , Sengupta Amartya
Published: October 2020

In the present work, the drought response in Tiger grass (Thysanolaena latifolia) plants has been investigated by monitoring water status using THz QCL based Laser Feedback Interferometry imaging technique.
Quantum multiplexing for error correction codes
Authors: Piparo Nicolo Lo , Hanks Michael , Gravel Claude , Munro William J. , Nemoto Kae
Published: October 2020

Quantum error correction codes require several physical resources for their implementation. Here, we show that the number of photons and qubits can be reduced for two quantum error correction codes through the quantum multiplexing approach.
A quantum autoencoder: using machine learning to compress qutrits
Authors: Pepper Alex , Tischler Nora , Pryde Geoff J.
Published: October 2020

The compression of quantum data will allow increased control over difficult-to- manage quantum resources. We experimentally realize a quantum autoencoder, which learns to compress quantum data with a classical machine learning routine.
High-Contrast Depth Imaging of Skin Moisturizing Agent Using Phase-Modulated Stimulated Raman Scattering
Authors: Ito Terumasa , Iguchi Risa , Matsuoka Fumiaki , Nishi Yoji , Ogihara Tsuyoshi , Misawa Kazuhiko
Published: October 2020

Signal contrasts for topically applied substances in conventional amplitude- modulated stimulated Raman scattering microscopy (SRS) are limited by tissue background scattering. Combined phase-modulated SRS and confocal reflection microscopy enables high- contrast depth-resolved imaging and robust skin-penetration analysis.
Back-action of dielectric microparticles mediated by photonic nanojet
Authors: Ren Yu-Xuan , Zeng Xinglin , Zhou Lei-Ming , Kong Cihang , Qiu Cheng-Wei , Tsia Kevin K. , Wong Kenneth K. Y.
Published: October 2020

We observed photonic nanojet mediated back-action owing to the light concentration at the focus of the microsphere and the absorption in immersion medium. Such back-action is a competing effect of light absorption and thermal conductivity.
On-Chip Polarization Beam Splitter Using Coupled Si3N4/SiO2 Horizontal Slot Waveguides
Authors: Fang Yuxi , Bao Changjing , Wang Zhonghan , Liu Yan-ge , Liu Bo , Huang Hao , Ren Yongxiong , Pan Zhongqi , Yue Yang
Published: October 2020

We propose a Si3N4/SiÜ2 horizontal slot waveguide polarization splitter with 281.5-pm splitting length and low nonlinearity for on-chip high-power systems. The extinction ratios for quasi-TM and quasi-TE modes are 23.9 dB and 20.8 dB, respectively.
Integrated Lidar with Wide Steering Angle by Combining Outputs of Orthogonally Polarized Beams
Authors: Han Xu , Wang Qiang , Wang Zhonghan , Fang Yuxi , He Yuxuan , Geng Wenpu , Pan Zhongqi , Yue Yang
Published: October 2020

Beam steering in integrated Lidar is implemented through wavelength tuning. Two beams with orthogonal polarizations are generated from TE and TM modes using paired grating couplers. Combining the outputs of two beams doubles steering angle.
A high slope efficiency DBR all-fiber laser based on Yb-doped YAG crystal-derived silica fiber
Authors: Wan Ying , Wen Jianxiang , Jiang Chen , Dong Yanhua , Chen Na , Zhao Ziwen , Pang Fufei , Chen Zhenyi , Huang Sujuan , Wang Tingyun
Published: October 2020

An Yb-doped YAG crystal-derived silica fiber (YCDSF) is fabricated by CO2laser-heating drawing method. Moreover, a DBR short-cavity all-fiber laser system is built up, and its slope efficiency is up to 50.5%.
Ultrafast Carrier Dynamics and Interlayer Coupling in 1T-VSe2/Graphene van der Waals Heterostructures
Authors: Park Tae Gwan , Choi Byoung Ki , Park Junho , Kim Jungdae , Chang Young Jun , Rotermund Fabian
Published: October 2020

We investigated the ultrafast carrier dynamics in metallic monolayer 1T-VSe2 and efficient interlayer hot electron transfer in VSe2/graphene van der Waals heterostructures by employing ultrafast pump-probe spectroscopy.
Performance Prediction of Established Lightpaths Using Machine Learning and Field Data
Authors: Tremblay Christine
Published: October 2020

In this presentation, we explore machine learning models based on recurrent neural networks trained with field data for lightpath performance prediction in coherent optical networks through some illustrative examples.
Demonstration on Computing Patterns Adjustment for Lower Job Completion Time in Metro Optical Inter- Cloud/Edge DC Network
Authors: Gao Xiong , Wang Cen , Takehiro Tsuritani , Guo Hongxiang
Published: October 2020

We demonstrate computing patterns setup and adjustment in the metro optical inter- cloud/edge DC networks. Experiment results verify the successful setup of a computing pattern and the efficiency of pattern adjustment in lowering JCTs.
Spectroscopic Single-Pixel Imaging with Neutrons
Authors: He Yu-Hang , Huang Yi-Yi , Zeng Zhi-Rong , Li Yi-Fei , Tan Jun-Hao , Chen Li-Ming , Wu Ling-An , Li Ming-Fei , Quan Bao-Gang
Published: October 2020

We present the first realization of neutron ghost imaging with a spallation source, with spatial and spectral resolutions of 100 pm and 0.4% at 1Å, respectively. Imaging was possible with neutron counts down to 1000/frame pattern.
Blur Removal and Quality Enhancement for Reconstructed Images in Dynamic Single-pixel Imaging
Authors: Jiao Shuming , Sun Mingjie , Gao Yang , Lei Ting , Xie Zhenwei , Yuan Xiaocong
Published: October 2020

The reconstruction results of a fast moving object can be heavily blurred and noisy in single-pixel imaging. We estimate optimal motion parameters and reconstruct images by motion-compensated illumination patterns to significantly enhance the quality.
Self-optimizing ghost imaging with a genetic algorithm
Authors: Liu Baolei , Shan Xuchen , Zhu Jianfeng , Chen Chaohao , Liu Yongtao , Wang Fan , McGloin David
Published: October 2020

To simplify the reconstruction algorithms in ghost imaging, we present a feedback-based approach to reduce reconstruction times. We introduce a genetic algorithm to optimize the illumination patterns in real-time to match with the object’s shape.
Transverse Localization of light: Towards a paradigm shift from trivial to non-trivial lattice
Authors: Bhattacherjee Sayan , Ghosh Somnath
Published: October 2020

Direct transition of trivial optical lattice to its non-trivial counterpart verified by customization of bandgap is reported. Numerical simulations show that no localization transition is observed in non-trivial lattices due to deliberate refractive-index disorder.
Recent progress in coherent pulse combination technologies
Authors: Zhang Zhigang
Published: October 2020

This presentation reviews the beam combination and pulse stacking technology, and updated progress. A discussion on current problems and prospects are also given.
97-Watt, 1.08-Gigahertz repetition rate, Femtosecond Yb:fiber Laser Source
Authors: Wang Yan , Liu Yizhou , Zhang Zhigang , Kartner Franz X.
Published: October 2020

We demonstrate a femtosecond ytterbium-doped fiber laser at 1030 nm with 1.08 GHz repetition rate, 97 W average output power using chirped pulse amplification (CPA). The compressed output pulse width is 233 fs.
Controlled Synthesis and Dissociation of Soliton Molecules Using Parallel Reactors in Optomechanical Lattice
Authors: He Wenbin , Pang Meng , Yeh Dung-Han , Russell Philip St.J.
Published: October 2020

The self-organized optomechanical lattice in an optoacoustically mode-locked fiber laser creates temporal trapping potentials ("reactors") that allow global and individual control of the synthesis and dissociation of massive soliton molecules.
Two-Color Soliton Molecules from a Fiber Laser
Authors: Lourdesamy Joshua P. , Runge Antoine F. J. , Alexander Tristram J. , Hudson Darren D. , Blanco-Redondo Andrea , de Sterke C. Martijn
Published: October 2020

We report the generation and characterization of soliton-molecules in dispersion-managed fiber lasers. Solitons at two different frequencies, with common (negative) dispersion, have identical group velocities; these solitons form a bound state with temporal beat fringes.
Angle Independent Fano Resonances in Bioinspired Nanostructured Fabry-Perot Sensors
Authors: Assumpcao Daniel , Siddique Radwanul , Narasimhan Vinayak , Choo Hyuck
Published: October 2020

The utility of Fabry-Perot based optical sensors is limited by their poor readout angle. We numerically demonstrate that adding bioinspired short-range-order nanostructuring to these devices leads to angle-independent Fano resonances, enabling wide angle optical sensing.
Pulse wave velocity measurement with soft-polymer optical fibers for wearable continuous blood pressure monitoring
Authors: Stefani Alessio , Rukhlenko Ivan D. , Ward Rebecca H. , Prinable Joseph , Large Maryanne C.J. , Fleming Simon C.
Published: October 2020

Soft-polymer fibers allow strong conformal contact with the skin and are extremely sensitive for deformation, despite high propagation loss. This enables pulse wave velocities measurements. Blood pressure can then be inferred using the Moens-Kortweg model.
Intra-cavity biosensing in refractive-index-sensing optical comb
Authors: Nakahara Takuya , Oe Ryo , Minamikawa Takeo , Taue Shuji , Kajisa Taira , Yasui Takeshi
Published: October 2020

We combined refractive-index-sensing optical comb with biotin surface modification for fiber biosensor of avidin. A repetition frequency signal of optical comb in RF region is read out as s sensor signal of biomolecules.
Modulation of surface plasmon polariton nanolasers on graphene-insulator-metal platform by current injection
Authors: Huang Zhen-Ting , Li Heng , Hong Kuo-Bin , Lu Tien-Chang
Published: October 2020

We propose plasmonic nanolasers on graphene-insulator-metal (GIM) platform and experimentally demonstrate the current modulated lasing behaviors. The lasing peak attenuated and blue-shifted. This platform could become an important building block in active plasmonic devices. © 2020 The Author(s)
Adaptation Mechanism for Digital Spectrum-based Soft Failure Identification
Authors: Shu Liang , Yu Zhenming , Wan Zhiquan , Xu Kun
Published: October 2020

We propose a novel adaptation mechanism for digital spectrum-based soft failure identification. The adaptation mechanism consists of filter cascading compensation and feature calibration. Numerical results show that it can bring the significant improvement on generalization.
Multitask Learning-Based Optical Performance Monitor for Modulation Format Adaptive M-QAM
Authors: Wan Zhiquan , Yu Zhenming , Shu Liang , Xu Kun
Published: October 2020

We propose a cost-effective optical performance monitor using multitask learning-based ANN to simultaneously monitor OSNR and modulation format. Compared with individual designed ANNs, about 87.6% complexity in prediction stage is reduced.
Blind Optical Modulation Format Identification Based on Both Intensity and Differential-Phase Density
Authors: Jiang Lin , Yan Lianshan , Yi Anlin , Pan Yan , Pan Wei , Luo Bin
Published: October 2020

We demonstrate a machine-learning-assisted modulation format identification scheme using both intensity and differential-phase density information. The identification performance for all formats can be achieved even at OSNR values lower than corresponding theoretical 20% FEC limit.
High-Resolution Light Field Image Acquisition for Holographic Stereogram Printing
Authors: Erdenebat Munkh-Uchral , Khuderchuluun Anar , Piao Yan-Ling , Darkhanbaatar Nyamsuren , Gil Sang- Keun , Pan Jae-Kyung , Kim Nam
Published: October 2020

The light field image acquisition for the holographic stereogram printing method is proposed. Cameras capture the high-resolution perspectives while they are shifted; then utilized as sources in the image processing for holographic stereogram printing.
In-Situ Raman Spectroscopy of Reaction Products in Optofluidic Hollow-Core Fiber Microreactors l'? 17
Authors: Gentleman Alexander S. , Miele Ermanno , Lawson Takashi , Köhler Philipp , Kim Sanmun , Yousaf Sultaan , Garcia Daniel Antón , Lage Ava , Grey Clare P. , Baumberg Jeremy J. , Frosz Michael H. , Russell Philip St.J. , Reisner Erwin , Euser Tijmen G.
Published: October 2020

We present the use of in-situ Raman spectroscopy within optofluidic hollow-core photonic crystal fibers to monitor reactions involving photo-induced electron transfer processes, demonstrating their utility to better understand mechanisms of photochemical reactions.
Liquid Microdisk based High Sensitivity of Polymer Refractive Index Sensor
Authors: Wang Lingfang , Guo Feng , Chen Kaixin
Published: October 2020

Cascaded reference polymer and liquid microdisk sensitivity refractive index sensor was proposed, with experimental sensitivity of 14030 nm/RIU and temperature coefficient of 2.21 nm/°C preformed, which shows the potential applications in biochemical and biomedical fields.
Near-infrared Pump Wavelengths for High Efficiency Dysprosium Doped Mid-infrared Fibre Lasers
Authors: Amin M. Z. , Majewski M. R. , Woodward R. I. , Fuerbach A. , Jackson S. D.
Published: October 2020

We report two excited-state absorption free near-infrared pump wavelengths (0.8 and 0.9 μm) for dysprosium-doped mid-infrared fibre lasers. High power diodes are available at these wavelengths, which opens up the opportunity for a diode-pumped system.
All-fibre Ultrafast Mid-infrared Laser
Authors: Bharathan Gayathri , Xu Luyi , Jiang Xiantao , Zhang Han , Majewski Matthew , Jackson Stuart D. , Fuerbach Alex
Published: October 2020

We report the first wavelength stabilized all-fibre ultrafast mid-infrared laser using MXene as a novel saturable absorber. This all-integrated pulsed laser is a promising tool for a broad range of applications in the mid-infrared regime.
2 μm Laser Characteristics and Spectroscopic Properties of Yb3+/Ho3+ co-doped GPGN
Authors: Khalid Mamoona , Ebendorff-Heidepriem Heike , Lancaster D.G.
Published: October 2020

A new Yb3+/Ho3+ co-doped germanate glass is fabricated and its spectroscopic properties are investigated to present its suitability as a potential gain medium for 2 pm laser operation. Rate equations are further applied to study the 2 pm laser characteristics of the glass pumped at 976 nm. The simulation shows that > 15 % laser slope efficiency can be achieved at 2050 nm by reducing the intracavity losses below 0.5 dB.
Full polarization-resolved spatiotemporal beam shaping
Authors: Mounaix Mickael , Fontaine Nicolas K. , Neilson David T. , Chen Haoshuo , Ryf Roland , Zacarias J.C. Alvarado- , Carpenter Joel
Published: October 2020

We demonstrate arbitrary control of all of the degrees of freedom of an optical beam (45 spatial modes per polarization state, spectral, temporal) in the full spectral C band, with temporal resolution 230 fs
Silicon nitride integrated photonic platform at 780 nm wavelength
Authors: Palmer Sonya , Boes Andreas , Ren Guanghui , Nguyen Thach , Mitchell Arnan
Published: October 2020

Silicon nitride (Si3N4) waveguides and microring resonators were designed and fabricated for operation at a wavelength of 780 nm, reporting a loss of 11 dB/cm and Q value of 5×104.
Two-Point Resonator-Waveguide Coupling Method for Independent Coupling Optimization at Distinct Wavelengths
Authors: Han Sangyoon , Kim Dohyeong , Kim Dae-Gon , Ko Kiyoung , Hwang Joonhyuk , Lee Yong-Hee , Choi Duk-Yong , Lee Hansuek
Published: October 2020

We show a two-point resonator-waveguide coupling method which allows optimizing coupling independently at distinct wavelengths. An intuitive equation is provided to predict the coupling behavior of the method and the equation is verified by experiments.
Assessing the Implementation of FBG Sensing Systems in Smart Hotels
Authors: Blando Colapinto Karen A. , Canning John
Published: October 2020

In response to hotel industry feedback a simulated power analysis of a fibre Bragg grating (FBG) wavelength division multiplexed (WDM) sensing system integrated within a passive optical local area network (POLAN) for remote structural health monitoring (SHM) is assessed.
Multi-Tone Pound-Drever-Hall Technique for Fiber Fabry-Perot Resonator Sensor Network
Authors: Zhao Shuangxiang , Liu Qingwen , He Zuyuan
Published: October 2020

Via combining the optical frequency comb source and the Pound-Drever-Hall technique, multi-tone Pound-Drever-Hall technique is proposed and it exhibits great potential in multiplexed high-finesse fiber Fabry-Perot resonator sensor network.
Nonlinear wavelength shift induced by exciton in buried multiple quantum wells in a photonic crystal cavity
Authors: Takiguchi Masato , Nozaki Kengo , Sumikura Hisashi , Takemura Naotomo , Fujii Takuro , Kuramochi Eiichi , Shinya Akihiko , Matsuo Shinji , Notomi Masaya
Published: October 2020

we investigate exciton absorption and nonlinear wavelength shift of a photonic crystal nanocavity with the buried multiple-quantum-well toward ultra-low energy all-optical switching.
A PDM-Based 168 Gb/s VSB-PAM8 Fiber-FSO Integration
Authors: Nainggolan Agustina , Hsia Hsin-Mao , Chen Yi-Hao , Li Chung-Yi , Tsai Wen-Shing , Lu Hai-Han
Published: October 2020

A PDM-based VSB-PAM8 fiber-FSO integration is demonstrated. Combining PDM scenario with PAM8 modulation, the transmission capacity of fiber-FSO integration is considerably increased with a total capacity of 168 Gb/s (84 Gb/s PAM8/polarization x 2 polarizations).
Resolution Enhancement of an Integral Imaging Microscopy Using Generative Adversarial Network
Authors: Alam Shahinur , Kwon Ki-Chul , Erdenebat Munkh-Uchral , Lim Young-Tae , Imtiaz Shariar , Sufian Md Abu , Jeon Seok-Hee , Kim Nam
Published: October 2020

We propose a deep learning-based resolution enhancement method for integral imaging microscopy. The elemental images were captured through a microlens array which generates orthographic view images. Resolution enhancement was done by the generative adversarial network.
Polarization dependence of supercontinuum and 3rd harmonic generation in Si3N4 for optical atomic clocks
Authors: Wang Lingfang , Li Hongquan , Hollberg Leo
Published: October 2020

Polarization dependence of supercontinuum and third-harmonic generations in silicon-nitride waveguides is mapped from 350-1750 nm. We identify parameters suited for generating coherent signals near 500 and 1000 nm for optical atomic clocks.
Tunable repetition rate in all PM-Fiber Mamyshev Oscillator
Authors: Piechal Bernard , Szczepanek Jan , Kardas Tomasz M. , Pielach Mateusz , Stepanenko Yuriy
Published: October 2020

We present an all-PM fiber Mamyshev oscillator with the tunable repetition rate through harmonic mode-locking. It emits 2 nJ pulses at 1022nm with repetition rate ranging from 16.3 through 229 MHz tuned by pump power.
Deterministic single soliton excitation in LiNbO3 microcavity with fundamental-second-harmonic mode coupling
Authors: Cheng Zihao , Li Feng , Huang Dongmei , Wai P. K. A.
Published: October 2020

We present deterministic excitation of single soliton in LiNbO3 microcavities by a trigger approach with either weak or strong fundamental-second-harmonic mode coupling.
Electro-optical tuning of phase matching wavelength in Lithium Niobate on Insulator (LNOI)
Authors: Huang Haijin , Zhou Hongting , Boes Andreas , Nguyen Thach , Corcoran Bill , Chang Lin , Bowers John , Mitchell Arnan
Published: October 2020

In this contribution, we present electro-optically tuneable quasi-phase matching in a periodically poled lithium niobate on insulator waveguide and experimentally demonstrate a tuning efficiency of 56 pm/100 V.
Semiconductor Laser with Delayed Optical Feedback - What Simulations Tell Us That We Didn't Know
Authors: Radziunas Mindaugas , Kane Deb M
Published: October 2020

Comprehensive numerical simulations of a semiconductor laser with optical feedback system showing the impact of key laser parameters on dynamical mapping are reported. These raise new opportunities for optimising such systems for their key applications.
Super-resolution FMCW laser ranging using two coherent LFM optical signals with different periods
Authors: Sun Xiuyuan , Yu Fengxi , Xu Zhongyang , Pan Shilong
Published: October 2020

The bandwidth-limited resolution of FMCW laser ranging is overwhelmed. Two coherent LFM optical signals with different periods are used as the transmitted and the local signals. The ranging resolution can be enhanced by 10 times.
A Simple Method for Enhancing the SNR in Direct Detection φ-OTDR based Distributed Acoustic Sensors
Authors: Uyar Faruk , Kartaloglu Tolga , Unal Canberk , Özbay Ekmel , Ozdur Ibrahim
Published: October 2020

A simple and effective method for increasing the SNR and range in φ-OTDR based direct-detection distributed acoustic sensors is proposed and experimentally verified. The proposed method results in ~11 dB SNR improvement at 66 km.