Finite difference time domain formulation for epsilon-negative medium using wave equation

2016 ◽  
Vol 26 (4) ◽  
pp. 304-310 ◽  
Author(s):  
Ayşegül Pekmezci ◽  
Ercan Topuz ◽  
Levent Sevgi
Keyword(s):  
Wave Equation ◽  
Finite Difference ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Difference Time ◽  
Negative Medium

Design of narrow band multi-channel optical filters using zero index medium

2018 ◽  
Vol 32 (15) ◽  
pp. 1850188
Author(s):  
N. P. Anusha ◽  
Alok Sharan
Keyword(s):  
Finite Difference ◽  
Optical Thickness ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Narrow Band ◽  
Optical Filter ◽  
Optical Filters ◽  
Difference Time ◽  
Zero Index ◽  
Negative Medium

We propose a design of narrow-band multi-channel optical filter using multiple stacks of unit cell consisting of trilayer of Doubly positive medium (DPS)–Doubly negative medium (DNG)–Epsilon negative medium (ENG). Finite Difference Time Domain (FDTD) technique is used to numerically simulate the effect of optical thickness of DPS, DNG and ENG media on tunability of the transmission spectrum of such a medium. We also demonstrate the control on the number of channels at different frequencies that can be transmitted through such medium.

A New Efficient Unconditionally Stable Finite-Difference Time-Domain Solution of the Wave Equation

2017 ◽  
Vol 65 (6) ◽  
pp. 3114-3121 ◽  
Author(s):  
Seyed-Mojtaba Sadrpour ◽  
Vahid Nayyeri ◽  
Mohammad Soleimani ◽  
Omar M. Ramahi
Keyword(s):  
Wave Equation ◽  
Finite Difference ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Unconditionally Stable ◽  
Difference Time
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