Lawrence R. Chen
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View article: High-Speed Narrow Linewidth All-PM Dispersive Swept Source for Real-Time FBG Sensor Interrogation
High-Speed Narrow Linewidth All-PM Dispersive Swept Source for Real-Time FBG Sensor Interrogation Open
View article: The metformin mediated MAPK signaling pathway influences D-Xylose regulation during diabetic kidney disease therapy
The metformin mediated MAPK signaling pathway influences D-Xylose regulation during diabetic kidney disease therapy Open
Metformin alleviates DKD through multi-modal mechanisms, modulating the MAPK signaling pathway and carbohydrate metabolites-notably D-xylose. As far as we are aware, these findings provide new mechanistic insights and suggest potential bio…
View article: Continuous-wave and mode-locked Bi-doped fiber laser at 1.7 μm
Continuous-wave and mode-locked Bi-doped fiber laser at 1.7 μm Open
We investigate continuous-wave (CW) and mode-locked (ML) operation of bismuth-doped fiber (BDF) lasers at 1.7 μm. We compare the slope efficiency (SE) of the Figure-of-9 (Fo9) and linear cavity configurations for CW operation and find that…
View article: Bias correction for Chatterjee's graph-based correlation coefficient
Bias correction for Chatterjee's graph-based correlation coefficient Open
Azadkia and Chatterjee (2021) recently introduced a simple nearest neighbor (NN) graph-based correlation coefficient that consistently detects both independence and functional dependence. Specifically, it approximates a measure of dependen…
View article: Correlations between Motives to Enter Engineering Studies and Engineering Self-Identity from a Pan-Canadian Undergraduate
Correlations between Motives to Enter Engineering Studies and Engineering Self-Identity from a Pan-Canadian Undergraduate Open
Understanding why students enter engineering has the potential to help formulate retention strategies and refine our understanding of engineering self-identity. This study explores the self-reported motives for entering engineering and eng…
View article: A study on the relationship between engineering teaching experience, self-efficacy, and pedagogical practices
A study on the relationship between engineering teaching experience, self-efficacy, and pedagogical practices Open
The objectives of this study were to understand the teaching perspectives and experiences of Engineering faculty members at a large Canadian university with R1 designation. Engineering faculty members were surveyed regarding their teaching…
View article: A selected literature review of engineering identity
A selected literature review of engineering identity Open
Engineering identity can involve many constructs, e.g., sense of belonging to the engineering profession, interest in engineering, recognition as an engineer, and competence for performing engineering tasks). For undergraduate students, an…
View article: 77P Survival outcomes and molecular characteristics of early-onset colorectal cancer patients (EOCRC): A multiracial cohort
77P Survival outcomes and molecular characteristics of early-onset colorectal cancer patients (EOCRC): A multiracial cohort Open
View article: Sim-and-Real Co-Training: A Simple Recipe for Vision-Based Robotic Manipulation
Sim-and-Real Co-Training: A Simple Recipe for Vision-Based Robotic Manipulation Open
View article: Bandwidth-Variable and Wavelength-Tunable Waveguide Bragg Grating Filter
Bandwidth-Variable and Wavelength-Tunable Waveguide Bragg Grating Filter Open
We propose and demonstrate a waveguide Bragg grating filter that is bandwidth-variable and wavelength-tunable. The filter is implemented using a pair of apodized waveguide Bragg gratings in silicon-on-insulator that are tuned thermally. Th…
View article: Applications of Quantum Dash Mode-Locked Laser in Microwave Photonics
Applications of Quantum Dash Mode-Locked Laser in Microwave Photonics Open
Microwave photonics (MWP) represents a significant optical signal processing system, standing at the confluence of microwave engineering and photonics. It presents a promising way for meeting the growing demands of contemporary communicati…
View article: Sprayable Biocide-Free Polyurethane Paint that Reduces Biofouling and Facilitates Removal of Pathogenic Bacteria from Surfaces
Sprayable Biocide-Free Polyurethane Paint that Reduces Biofouling and Facilitates Removal of Pathogenic Bacteria from Surfaces Open
The ability to prevent bacterial adhesion on surfaces and to facilitate the removal of bacteria once they have already contaminated or colonized a surface is important in a broad range of fundamental and applied contexts. The work reported…
View article: Systematic Identification of Candidate Genes for Inherited Retinal Disease Gene Therapy Integrating Worldwide IRD Cohort and Single‐Cell Analysis
Systematic Identification of Candidate Genes for Inherited Retinal Disease Gene Therapy Integrating Worldwide IRD Cohort and Single‐Cell Analysis Open
Inherited retinal dystrophies (IRDs) constitute a heterogeneous group of primarily monogenic orphan diseases caused by mutations in over 300 genes, collectively affecting millions of individuals worldwide with visual impairment. Despite si…
View article: Deep Learning-Based Method for Automatic Extraction of Burn Scars from Remote Sensing Images
Deep Learning-Based Method for Automatic Extraction of Burn Scars from Remote Sensing Images Open
View article: A Comprehensive Survey on Machine and Deep Learning for Optical Communications
A Comprehensive Survey on Machine and Deep Learning for Optical Communications Open
The increasing complexity of optical communication systems and networks necessitates advanced methodologies for extracting valuable insights from vast and heterogeneous datasets. Machine learning (ML) and deep learning (DL) have emerged as…
View article: Preliminary Employment Trajectory Findings from a Pan-Canadian Survey on Career Motivations and Aspirations of Undergraduate Engineering Students
Preliminary Employment Trajectory Findings from a Pan-Canadian Survey on Career Motivations and Aspirations of Undergraduate Engineering Students Open
Engineering students have varied vocational motivations and aspirations. Clarity regarding these factors, how they can be nurtured, and how they can impact attrition from the profession can help foster retention and diversification. A surv…
View article: A Survey on Machine and Deep Learning for Optical Communications
A Survey on Machine and Deep Learning for Optical Communications Open
The ever-growing complexity of optical communication systems and networks demands sophisticated methodologies to extract meaningful insights from vast amounts of heterogeneous data. Machine learning (ML) and deep learning (DL) have emerged…
View article: Spline-FRIDA: Towards Diverse, Humanlike Robot Painting Styles with a Sample-Efficient, Differentiable Brush Stroke Model
Spline-FRIDA: Towards Diverse, Humanlike Robot Painting Styles with a Sample-Efficient, Differentiable Brush Stroke Model Open
A painting is more than just a picture on a wall; a painting is a process comprised of many intentional brush strokes, the shapes of which are an important component of a painting's overall style and message. Prior work in modeling brush s…
View article: Movie Gen: A Cast of Media Foundation Models
Movie Gen: A Cast of Media Foundation Models Open
We present Movie Gen, a cast of foundation models that generates high-quality, 1080p HD videos with different aspect ratios and synchronized audio. We also show additional capabilities such as precise instruction-based video editing and ge…
View article: TLDR: Token-Level Detective Reward Model for Large Vision Language Models
TLDR: Token-Level Detective Reward Model for Large Vision Language Models Open
Although reward models have been successful in improving multimodal large language models, the reward models themselves remain brutal and contain minimal information. Notably, existing reward models only mimic human annotations by assignin…
View article: Student-Generated Infographics and Videos for Learning about Professional Obligations and the Impact of Engineering on Society
Student-Generated Infographics and Videos for Learning about Professional Obligations and the Impact of Engineering on Society Open
This Complete Evidence-Based Practice paper describes the use of two forms of alternative assessment for students to learn about the professional obligations and responsibilities of engineers as well as the impact of engineering on society…
View article: Experimental demonstration of quantum encryption in phase space with displacement operator in coherent optical communications
Experimental demonstration of quantum encryption in phase space with displacement operator in coherent optical communications Open
We provide experimental validation of quantum encryption in phase space using displacement operators in coherent states (DOCS) in a conventional coherent optical communication system. The proposed encryption technique is based on displacin…
View article: Arbitrary waveform generation system using a quantum dash optical frequency comb source
Arbitrary waveform generation system using a quantum dash optical frequency comb source Open
We present an approach for microwave photonic (MWP) arbitrary waveform generation utilizing a quantum dash optical frequency comb source. Leveraging the availability of up to 41 comb lines and incorporating a real-time control feedback loo…
View article: How is the Pilot Doing: VTOL Pilot Workload Estimation by Multimodal Machine Learning on Psycho-physiological Signals
How is the Pilot Doing: VTOL Pilot Workload Estimation by Multimodal Machine Learning on Psycho-physiological Signals Open
Vertical take-off and landing (VTOL) aircraft do not require a prolonged runway, thus allowing them to land almost anywhere. In recent years, their flexibility has made them popular in development, research, and operation. When compared to…
View article: Instantaneous frequency measurement system based on quantum dash mode-locked laser
Instantaneous frequency measurement system based on quantum dash mode-locked laser Open
We present the theory and experimental results of a microwave photonic (MWP) filter based instantaneous frequency measurement system. A quantum dash mode-locked laser is used as an optical frequency comb source. With up to 41 flat comb lin…
View article: Animated Stickers: Bringing Stickers to Life with Video Diffusion
Animated Stickers: Bringing Stickers to Life with Video Diffusion Open
We introduce animated stickers, a video diffusion model which generates an animation conditioned on a text prompt and static sticker image. Our model is built on top of the state-of-the-art Emu text-to-image model, with the addition of tem…
View article: Performance of quantum-dash mode-locked lasers (QD-MLLDs) for high-capacity coherent optical communications
Performance of quantum-dash mode-locked lasers (QD-MLLDs) for high-capacity coherent optical communications Open
We investigate the capabilities and limitations of quantum-dash mode-locked lasers (QD-MLLDs) as optical frequency comb sources in coherent optical communication systems. We demonstrate that QD-MLLDs are on par with conventional single-wav…
View article: LEGO: Learning EGOcentric Action Frame Generation via Visual Instruction Tuning
LEGO: Learning EGOcentric Action Frame Generation via Visual Instruction Tuning Open
Generating instructional images of human daily actions from an egocentric viewpoint serves as a key step towards efficient skill transfer. In this paper, we introduce a novel problem -- egocentric action frame generation. The goal is to sy…
View article: Editorial
Editorial Open
Photonic signal processing is a broad and multi-disciplinary field, bringing together topics from physics, materials, and devices; communications, signal processing, and information theory; neuroscience; quantum information science; linear…
View article: Language Embedded Radiance Fields for Zero-Shot Task-Oriented Grasping
Language Embedded Radiance Fields for Zero-Shot Task-Oriented Grasping Open
Grasping objects by a specific part is often crucial for safety and for executing downstream tasks. Yet, learning-based grasp planners lack this behavior unless they are trained on specific object part data, making it a significant challen…