Design of Compact Nano-Optical Couplers Involving Dielectric Nanorods

Date

2018-06-01

Author

Karaosmanoglu, Bariscan
Yazar, Sirin
Ergül, Özgür Salih

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

228
views

0
downloads

We present optimization and design of nano-optical couplers involving dielectric nanorods. Using tens of elements, optimal array configurations are found to produce alternative responses that can be digitized. For realistic simulations, the couplers are modeled as three-dimensional structures and analyzed via surface integral equations and the multilevel fast multipole algorithm (MLFMA). Initial results are presented demonstrate the feasibility of compact but effective couplers with desired responses.

Subject Keywords

Optimizations, Transmission, Efficient

URI

https://hdl.handle.net/11511/55501

Conference Name

2nd URSI Atlantic Radio Science Meeting (AT-RASC)

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Design and analysis of nano-optical networks consisting of nanowires and optimized couplers Altinoklu, Askin; Karaova, Gokhan; Ergül, Özgür Salih (2019-09-01) We present computational design and investigation of nano-optical systems involving nanowires and well-designed nano-couplers to effectively transmit electromagnetic power in nanometer scales. Different nano-couplers, which consist of optimal arrangements of nano-cubes, are carefully designed by considering various scenarios, e.g., nanowire lines with sharp corners and junctions. An efficient combination of genetic algorithms and the multilevel fast multipole algorithm is used to find suitable configuration...
Nonlinear Seismic Dam and Foundation Analysis Using Explicit Newmark Integration Method with Static Condensation Albostan, Utku; Bahcecioglu, Tunc; Arıcı, Yalın; Kurç, Özgür (Elsevier BV; 2017-09-13) Engineers use the explicit Newmark integration method to analyze nonlinear dynamic problems. Instead of using computationally expensive global matrix assembly and factorization, the explicit integration method performs computations at element level which is computationally efficient, easily parallelizable, and does not require equilibrium iterations in case of nonlinear analysis. On the other hand, the explicit schema might require much smaller time steps compared to implicit integration alternative especia...
Design and optimization of nano-optical couplers for controlling transmission between electrically isolated nanowires Karaova, Gokhan; Tahan, Utku; Atmaz, Tuna; Ergül, Özgür Salih (2019-09-01) © 2019 IEEE.We present design, optimization, and simulation of effective nano-optical couplers to control power transmission in nanowire networks. The couplers consist of careful arrangements of nanoparticles that are designed in an optimization environment based on genetic algorithms and a full-wave solver. The nanowire segments are electrically isolated from each other, leading to more reconfigurable and adaptable systems. We show that, even in the absence of direct contacts between nanowires, high-perfor...
Design and Optimization of Nano-Optical Isolators Based on Irregular Arrangements of Dielectric Rods Yazar, Şirin; Ergül, Özgür Salih (2022-01-01) Design and optimization of efficient and compact nano-optical isolators based on irregular arrays of dielectric rods are presented. These designs allow electromagnetic waves to propagate in single direction and prevent them from propagating in the opposite direction. This way, high forward transmission is achieved, while the main source is protected from reflected waves. Effective optimization algorithms are integrated with the multilevel fast multipole algorithm (MLFMA), a fast and accurate full-wave numer...
Solving Constrained Optimal Control Problems Using State-Dependent Factorization and Chebyshev Polynomials Gomroki, Mohammad Mehdi; Topputo, Francesco; Bernelli-Zazzera, Franco; Tekinalp, Ozan (2018-03-01) The present work introduces a method to solve constrained nonlinear optimal control problems using state-dependent coefficient factorization and Chebyshev polynomials. A recursive approximation technique known as approximating sequence of Riccati equations is used to replace the nonlinear problem by a sequence of linear-quadratic and time-varying approximating problems. The state variables are approximated and expanded in Chebyshev polynomials. Then, the control variables are written as a function of state ...

Citation Formats

B. Karaosmanoglu, S. Yazar, and Ö. S. Ergül, “Design of Compact Nano-Optical Couplers Involving Dielectric Nanorods,” presented at the 2nd URSI Atlantic Radio Science Meeting (AT-RASC), Meloneras, SPAIN, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55501.