Implementation of the Rigorous Coupled Wave Algorithm in MATLAB
Curtis Menyuk, Computer Science and Electrical Engineering
Rushin Contractor, Computer Science and Electrical Engineering
The project involves developing a MATLAB program that can model the reflection and transmission efficiency and the behavior of fields inside 1D, 2D or 3D binary gratings. The result is to be tested against grating structures with known spectra.
Parallel WDM Simulator with dual Polarization
Curtis Menyuk, Computer Science and Electrical Engineering, UMBC
Bruno Cardoso Coutinho, PhD Student (LABTEL UFES BRAZIL)
Marcelo Eduardo Vieira Segatto (LABTEL UFES BRAZIL)
This project aims to optimize, using techniques and high-performance computing architectures, the numerical simulation in WDM optical networks with complex physical and logical topology, that nowadays they’re frequently use approximate analytical models to estimate the effects of the physical layer. We propose the construction of a simulator to evaluate the optical network infrastructure for data transport of high capacity, which reproduces the dynamic behavior of traffic demands, taking into account the effects of the physical layer by means of a numerical model incorporated for simulating signal propagation in optical fibers.
Modeling High-Current Photodetectors
Curtis Menyuk, Department of Computer Science and Electrical Engineering
Yue Hu, Department of Computer Science and Electrical Engineering
The nonlinear response of high-current photodetectors plays an important role in limiting the performance of RF-photonic devices. Yet, the physical reasons for this nonlinear response remain poorly understood, and the only comprehensive simulations of this effect were carried out almost a decade ago when the computational tools and computers were far less powerful than they are now. In particular, almost all prior work used a simple one-dimensional model of the photodetector, which ignored the radial dependence of the light beam. We are intending to carry out work in which we solve the drift-diffusion equations, taking into account radial effects for a high-current p-i-n photodetector using finite-difference methods. We will be carrying out this work in collaboration with experimental researchers at the Naval Research Laboratory.
Modeling and Optimization of Fiber Modelocked Lasers
Curtis Menyuk, Department of Computer Science and Electrical Engineering
Brian Marks, Center for Advanced Studies in Photonics Research
John Zweck, Department of Mathematics and Statistics
Fiber modelocked lasers produce very short pulses of light that can be used for accurate measurement of time and frequency. However, these lasers possess some uncertainty with respect to their optimal operating parameters. Hence proper modeling is crucial. We model a number of fiber lasers at the National Institute for Standards and Technology. Our simulations will aid our experimental collaborators in optimizing the settings and maximizing performance.
Modeling of Spatial Modes in Microresonator
Dr. Curtis Menyuk, Department of Computer Science and Electrical Engineering.
The objective of this project is to find the mode families in silica microresonator using finite-element method simulation(COMSOL multiphysics package). This investigation will provide insight into soliton-forming and nonsoliton-forming spatial modes that may exist in microresonator structure.
Modeling Carrier Transport of Quantum Cascade Lasers
Curtis R. Menyuk, Department of Computer Science and Electrical Engineering
Muhammad A. Talukder, Department of Computer Science and Electrical Engineering
In this project we model the carrier transport of quantum cascade lasers taking into account both coherent tunneling mechanisms and non-coherent scattering mechanisms. We simulate the distribution in all the levels in 1.5 period of the actual structure. Quantum kinetic density matrix equations are written with periodic boundary conditions so that translational symmetry is retained.
Anti-reflective surfaces for mid-IR optical fibers
Curtis Menyuk, CSEE, UMBC
Andrew Docherty, CASPR, UMBC
Joe Weiben, CSEE, UMBC
The preliminary goal of this project is to create and validate a theoretical model for an anti-reflective moth-eye structure to be imprinted on the ends of chalcogenide optical fibers. Further we plan to calculate the transmission spectra of these moth-eye anti-reflective surface designs with different geometries and compare them to experimental results of such surfaces.