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Sehen Sie sich die Kollektion für die COMSOL Conference 2023 an

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Bengaluru 2023

Munich 2023

Optics, Photonics and Semiconductorsx

Numerical Simulation of Bull's Eye Grating Using COMSOL Multiphysics® Software

D. Ray [1], A. Prabhakar [1],
[1] Indian Institute of Technology Madras, Chennai, Tamil Nadu, India

Plasmonic gratings like bull's eye can localize E field due to excitation of surface plasmons and when integrated with Ge-on-Si photodetector they can help in fabrication of ultra small photodiodes with high sensitivity. We have numerically carried out a frequency analysis for the ... Mehr lesen

Simulating an Adaptive, Liquid-Filled Membrane Lens with COMSOL Multiphysics® Software

V. S. Negi[1], H. Garg[1], B. Singh [2],
[1] Central Scientific Instruments Organisation, Chandigarh, India
[2] Chandigarh College of Engineering and Technology, Chandigarh, India

Adaptive optics control using liquid filled membrane lens is based on the principle of deflection of polymeric membrane. Controlled deflection in membrane leads to controlled focal length. This enhances the focus tuning ability of the system at the same time make optical system compact ... Mehr lesen

Simulation of Optical Ring Resonator Based on Lithium Niobate on Insulator

H. Kumar [1], V. Janyani [1], B. Oleh [2], U. Serhij [2], S. Dmytro [2], G. Singh [1],
[1] Dept. of Electronics and Communication Engg., Malaviya National Institute of Technology Jaipur, India
[2] Inst. of Tele. Radioelectronics and Electronic Engg.,Lviv Polytechnic National University, Lviv, Ukraine

In this paper, all optical microring resonator based on Lithium Niobate on Insulator (LNOI) has been proposed. LNOI has high refractive index contrast and also show better electro-optic & acousto-optic effects. The optical ring resonator resonates when the optical path-length of the ... Mehr lesen

Product Design of Macro Optical Clocking by Ray Optics

V. Vinothkumar[1], R. C. Thiagarajan [1],
[1] ATOA Scientific Technologies Pvt Ltd, Bangalore, India.

Optical cloaking was considered as fictional. Recent developments shows that macro scale optical cloaking is practical and functional. Brief review of ray optics based macro optical cloaking concepts are given. COMSOL Multiphysics® software simulations of cloaking devices are detailed. ... Mehr lesen

Radiation Heat Transfer in Imaging Infrared Spectrometer

A. Jhaveri [1], M. Kushhare [1], A. Bhargav [1],
[1] Indian Institute of Technology Gandhinagar, Gandhinagar, Gujarat, India.

Imaging Infrared Spectrometer (IIRS) is a Hyperspectral optical imaging instrument which measures the spectra of a scene in high resolution within spectral bands covering Near Infrared (NIR) to Mid Infrared (MIR) regions. Radiation entering the spectrometer assembly governs the ... Mehr lesen

COMSOL Multiphysics® Software as a Metasurfaces Design Tool for Plasmonic-Based Flat Lenses

B. Adomanis [1], D. B. Burckel [2], M. Marciniak [1],
[1] Air Force Institute of Technology, Wright-Patterson AFB, OH, USA
[2] Sandia National Laboratories, Albuquerque, NM, USA

Introduction: Flat lenses require precise control of a phase gradient across an interface, which is enabled through the application of engineered surfaces, such as Metasurfaces [1]. Periodic arrays of plasmonic antennas have been utilized to generate this desired phase gradient, which ... Mehr lesen

Simulation of Diffuse Optical Tomography using COMSOL Multiphysics®

S. A. M. Kirmani [1] , L. Velmanickam [1], D. Nawarathna [1], S. S. Sherif [2], I. T. Lima Jr. [1],
[1] Department of Electrical and Computer Engineering, North Dakota State University, Fargo, ND, USA
[2] Department of Electrical and Computer Engineering, University of Manitoba, Winnipeg, MB, Canada

We show that COMSOL Multiphysics® software can efficiently simulate the diffusion equation (DE) in diffusive optical tomography systems. Using our implementation, we simulate a frequency domain diffusive optical tomography system two order of magnitude faster than the standard Monte ... Mehr lesen

Transformation Optics Simulation Method for Stimulated Brillouin Scattering

R. Zecca [1], P. T. Bowen [1], D. R. Smith [1], S. Larouche [1],
[1] Center for Metamaterials and Integrated Plasmonics and Department of Electrical and Computer Engineering, Duke University, Durham, NC, USA

Stimulated Brillouin scattering (SBS) is a nonlinear phenomenon coupling optical and elastic waves. Traditionally regarded as an undesirable side-effect, it has garnered renewed interest as a platform for investigating slow light, nonreciprocity, and for designing high-performance chip ... Mehr lesen

$Modeling of a Diffraction Grating Coupled Waveguide Based Biosensor for ...$

Modeling of a Diffraction Grating Coupled Waveguide Based Biosensor for Microfluidic Applications

Y. Wu [1], M. L. Adams [1],
[1] Auburn University, Auburn, AL, USA

Grating couplers are a common optical component for introducing light into chip-based photonic structures. They are used extensively for optical interconnects and optical device integration. A microfluidic diffraction grating coupled waveguide (MDGCW) biosensor applies a grating coupler ... Mehr lesen

Highly Sensitive Grating-Coupled Bloch Surface Wave Resonance Biosensor via Azimuthal Interrogation

V. Koju [1], W. M. Robertson [1],
[1] Middle Tennessee State University, Murfreesboro, TN, USA

A dielectric multilayer structure, with a grating profile on the surface layer, can couple light into a strongly confined surface wave, known as a Bloch surface wave. These surface modes can be used to design bio-sensors. The corrugated surface structure also enables azimuthal angular ... Mehr lesen

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