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

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Title: Broadband six-port circulator based on magneto-optical-rod ring in photonic crystal.
Authors: Wang, Qiong, Ouyang, Zhengbiao zbouyang@szu.edu.cn, Zheng, Yaoxian, Lin, Mi, Zheng, Guoliang
Source: Applied Physics B: Lasers & Optics. Dec2015, Vol. 121 Issue 3, p385-389. 5p. 3 Diagrams, 2 Graphs.
Subjects: Circulators (Electrical engineering), Magnetooptics, Optical waveguides, Photonic crystals, Coupled map lattices, Wavelength division multiplexing
Abstract: We theoretically present the model of six-port circulator with a ring of magneto-optical rods symmetrically coupled to the waveguides in a two-dimensional triangle-lattice photonic crystal. Coupled mode theory is used to predict the broadband condition. It is shown that the rod-waveguide coupling should be equal to the rod-rod coupling in the structure, in order to obtain excellent performance of device in a relatively large bandwidth. According to the analytical results, the circulator is optimized and its properties are investigated. The results show that the insertion loss of the circulator can reach to 0.017 dB and isolations for the isolated ports are all above 29 dB. The broadband, low insertion loss, high-isolation circulator with multiple ports presented here is compact in structure and appropriate for optical integrated systems and wavelength division multiplexing applications. [ABSTRACT FROM AUTHOR]
Copyright of Applied Physics B: Lasers & Optics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Broadband six-port circulator based on magneto-optical-rod ring in photonic crystal.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Qiong%22">Wang, Qiong</searchLink><br /><searchLink fieldCode="AR" term="%22Ouyang%2C+Zhengbiao%22">Ouyang, Zhengbiao</searchLink><i> zbouyang@szu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zheng%2C+Yaoxian%22">Zheng, Yaoxian</searchLink><br /><searchLink fieldCode="AR" term="%22Lin%2C+Mi%22">Lin, Mi</searchLink><br /><searchLink fieldCode="AR" term="%22Zheng%2C+Guoliang%22">Zheng, Guoliang</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Applied+Physics+B%3A+Lasers+%26+Optics%22">Applied Physics B: Lasers & Optics</searchLink>. Dec2015, Vol. 121 Issue 3, p385-389. 5p. 3 Diagrams, 2 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Circulators+%28Electrical+engineering%29%22">Circulators (Electrical engineering)</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetooptics%22">Magnetooptics</searchLink><br /><searchLink fieldCode="DE" term="%22Optical+waveguides%22">Optical waveguides</searchLink><br /><searchLink fieldCode="DE" term="%22Photonic+crystals%22">Photonic crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Coupled+map+lattices%22">Coupled map lattices</searchLink><br /><searchLink fieldCode="DE" term="%22Wavelength+division+multiplexing%22">Wavelength division multiplexing</searchLink>
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  Data: We theoretically present the model of six-port circulator with a ring of magneto-optical rods symmetrically coupled to the waveguides in a two-dimensional triangle-lattice photonic crystal. Coupled mode theory is used to predict the broadband condition. It is shown that the rod-waveguide coupling should be equal to the rod-rod coupling in the structure, in order to obtain excellent performance of device in a relatively large bandwidth. According to the analytical results, the circulator is optimized and its properties are investigated. The results show that the insertion loss of the circulator can reach to 0.017 dB and isolations for the isolated ports are all above 29 dB. The broadband, low insertion loss, high-isolation circulator with multiple ports presented here is compact in structure and appropriate for optical integrated systems and wavelength division multiplexing applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Applied Physics B: Lasers & Optics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – SubjectFull: Magnetooptics
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      – SubjectFull: Optical waveguides
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      – SubjectFull: Wavelength division multiplexing
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