Broadband six-port circulator based on magneto-optical-rod ring in photonic crystal

Wang, Qiong; Ouyang, Zhengbiao; Zheng, Yaoxian; Lin, Mi; Zheng, Guoliang

doi:10.1007/s00340-015-6241-7

Cited by 12 publications

(2 citation statements)

References 14 publications

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“…If we define the insertion loss less than 0.5 dB and the isolations greater than 15 dB as the operation condition, the normalized operation bandwidth of our circulator is from 0.4887 to 0.4892 ( ωa /2πc) for both polarizations, corresponding to 1.466 × 10 10 ~1.468 × 10 10 Hz in the microwave band. The bandwidth of the proposed PIC is not so wide compared to that of single-polarization circulators reported in literature 13 , 14 . However, some measures can be taken to increase the bandwidth.…”

Section: Resultsmentioning

confidence: 78%

Polarization-independent circulator based on ferrite and plasma materials in two-dimensional photonic crystal

Lin

Qiu

et al. 2018

Sci Rep

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We propose a type of polarization-independent circulator based on ferrite and plasma materials in a two-dimensional photonic crystal (PhC) slab. First, on the basis of analyzing the wave equations in ferrite and plasma materials, TE and TM circulators are realized with ferrite and plasma in PhCs, respectively. Then, by properly combining these two types of circulators together, a polarization-independent circulator is achieved and investigated. The results show that, for both polarizations, the insertion loss and isolation for the polarization-independent circulator are less than 0.15 dB and more than 20 dB, respectively. Finite-element method is used to calculate the characteristics of the circulators and Nelder-Mead optimization method is employed to obtain the optimized parameters. The idea presented here may have potential applications in integrated photonic circuits and devices.

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Section: Resultsmentioning

confidence: 78%

Polarization-independent circulator based on ferrite and plasma materials in two-dimensional photonic crystal

Lin

Qiu

et al. 2018

Sci Rep

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“…1 Optical circulators have been also discussed in literature. 2,[6][7][8] In THz region, one of the promising tendencies is graphene technology which allows one, in particular, to construct nonreciprocal devices. Recently, an interesting idea of an edge-guided graphene circulator was suggested in.…”

Section: Introductionmentioning

confidence: 99%

THz dynamically controllable graphene Y-circulator

Dmitriev

Castro

Nascimento

2017

2017 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC)

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A new type of the graphene-based three-port circulator is suggested and analysed. The cross-section of the component presents a three-layer structure consisting of a layer of silicon, of silica and of graphene. In-plane figure resembles a common microwave nanostrip circulator with a circular graphene resonator and three waveguides symmetrically connected to it. The graphene is magnetized normally to its plane by a DC magnetic field. The numerical simulation demonstrates the isolation of -15 dB and insertion losses of -2 dB in 6.98 % frequency band with the central frequency 8.23THz.

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Graphene-based four-port circulator with an elliptical resonator for THz applications

et al. 2021

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Broadband six-port circulator based on magneto-optical-rod ring in photonic crystal

Cited by 12 publications

References 14 publications

Polarization-independent circulator based on ferrite and plasma materials in two-dimensional photonic crystal

Polarization-independent circulator based on ferrite and plasma materials in two-dimensional photonic crystal

THz dynamically controllable graphene Y-circulator

Graphene-based four-port circulator with an elliptical resonator for THz applications

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