High-isolation polarization-independent optical quasi-circulator with a simple structure

1998 ◽  
Vol 23 (7) ◽  
pp. 549 ◽  
Author(s):  
Lin-Dou Wang
Keyword(s):  
Simple Structure ◽  
High Isolation ◽  
Polarization Independent

scholarly journals Polarization-Independent Circulator Based on Composite Rod of Ferrite and Plasma in Photonic Crystal Structure

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 381
Author(s):  
Mi Lin ◽  
Lixin Fu ◽  
Shakeel Ahmed ◽  
Qiong Wang ◽  
Yaoxian Zheng ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Large Scale ◽  
Optimization Method ◽  
Coupling Condition ◽  
High Isolation ◽  
Optimum Parameters ◽  
Composite Rod ◽  
Polarized Waves ◽  
Two Dimensional Photonic Crystal ◽  
Polarization Independent

We propose a type of polarization-independent circulator based on a composite rod of ferrite and plasma materials in a two-dimensional photonic crystal (PhC) slab. Only one composite rod was set at the center of the structure to provide circulation for both TE- and TM-polarized waves. Additionally, to improve the performance of the circulator, three additional rods were inserted to improve the coupling condition between the center magneto-optical microcavity and the corresponding waveguides. Finite element method was used to calculate the characteristics of the structure and the Nelder–Mead optimization method was employed to obtain the optimum parameters. The results show that a low insertion loss (~0.22 dB) and high isolation (~14 dB) can be achieved in our structure for waves of both TE and TM polarizations. The idea presented here may be useful for designing compact polarization devices in large-scale integrated photonic circuits.

scholarly journals A DUAL-PORT SUM-DIFFERENCE BEAM ANTENNA WITH SIMPLE STRUCTURE AND VERY HIGH ISOLATION

2017 ◽  
Vol 74 ◽  
pp. 41-49 ◽  
Author(s):  
Zhichao Deng ◽  
Fushun Zhang ◽  
Min Liang ◽  
Ya-Li Yao ◽  
Fan Zhang
Keyword(s):  
Simple Structure ◽  
High Isolation ◽  
Very High

Simple structure high isolation multi/demultiplexer

1980 ◽  
Vol 16 (23) ◽  
pp. 869 ◽  
Author(s):  
T. Tanaka ◽  
H. Serizawa ◽  
Y. Tsujimoto
Keyword(s):  
Simple Structure ◽  
High Isolation
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