High-isolation polarization-independent quasi-optical circulator

1992 ◽  
Vol 10 (9) ◽  
pp. 1226-1229 ◽  
Author(s):  
Y. Fujii
Keyword(s):  
High Isolation ◽  
Optical Circulator ◽  
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.

Waveguide polarization-independent optical circulator

1999 ◽  
Vol 11 (3) ◽  
pp. 355-357 ◽  
Author(s):  
N. Sugimoto ◽  
T. Shintaku ◽  
A. Tate ◽  
H. Terui ◽  
M. Shimokozono ◽  
...  
Keyword(s):  
Optical Circulator ◽  
Polarization Independent

Hybrid integration of a polarization independent optical circulator

2020 ◽  
Author(s):  
Hauke Conradi ◽  
David de Felipe Mesquida ◽  
Moritz Kleinert ◽  
Madeleine Nuck ◽  
Martin Kresse ◽  
...  
Keyword(s):  
Hybrid Integration ◽  
Optical Circulator ◽  
Polarization Independent
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