The transmission characteristics of surface plasmon polaritons in ring resonator. Opt Express

State Key Laboratory of Optoelectronic Materials and Technologies, Zhongshan (Sun Yat-Sen) University, Guangzhou 510275, China.
Optics Express (Impact Factor: 3.49). 12/2009; 17(26):24096-101. DOI: 10.1364/OE.17.024096
Source: PubMed


A two-dimensional nanoscale structure which consists of two metal-insulator-metal (MIM) waveguides coupled to each other by a ring resonator is designed. The transmission characteristics of surface plasmon polaritons are studied in this structure. There are several types of modes in the transmission spectrum. These modes exhibit red shift when the radius of the ring increases. The transmission properties of such structure are simulated by the Finite-Difference Time-Domain (FDTD) method, and the eignwavelengths of the ring resonator are calculated theoretically. Results obtained by the theory of the ring resonator are consistent with those from the FDTD simulations.

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    • "idea of evanescent coupling was more widely recognized. For instance, the capability of MIM circular ring resonators in realization of wavelength demultiplexing was demonstrated by utilizing evanescent coupling mechanism between a ring and straight waveguides [12]. In 2010, the same idea was further pursued by substituting the circular ring with a rectangular ring [13]. "
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    ABSTRACT: A circuit model based on the transmission line theory is proposed to analyze the recently introduced metal–insulator–metal (MIM) complementary split-ring resonators (CSRRs). It is shown that integer and noninteger modes of CSRRs can be characterized by transmission line models with short- and open-circuited terminals. The proposed circuit model is then extended to incorporate side-coupling effects between the CSRRs and straight MIM waveguides. Thereby, simple closed-form expressions are provided for the coupling quality factor. It is shown that waveguide resonator structures based on CSRRs at specific resonance frequency and bandwidth can be smaller than waveguide resonator structures based on conventional ring resonators. Thanks to the smaller size of CSRRs, the coupling in the former arrangement is stronger than it is in the latter. Therefore, CSRRs are not required to be in the extreme proximity of the waveguide as in the waveguide ring resonators.
    Journal of Lightwave Technology 08/2014; 32(15):2659-2665. DOI:10.1109/JLT.2014.2331325 · 2.97 Impact Factor
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    • "The resonances can be excited, weakened or even cut-off by adjusting the split angle, which are easily modified to the visible and near-infrared ranges. This modulation method is more convenient than the one, which is via changing the geometric parameters of the whole ring or the partial ring [13], [15]. The transmission peaks of even resonance modes exhibit blue shift as increasing the depth of the split. "
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    ABSTRACT: A nanoscale resonator composed of two metal–insulator–metal (MIM) waveguides and a split ring is investigated numerically. The multipolar plasmonic resonance modes can be excited, weakened, or even cut off by adjusting the split angle. These novel phenomena are due to the electric polarization in the split area. Odd modes exhibit when the electric field is polarized perpendicular to the split. The resonator acts as a LC circuit for the electric field polarized parallel to the split, in which even modes are excited. The capacitance diminished when the split depth is increased, and the resonance wavelengths of even modes exhibit blue shift. Our results imply an extensive potential for tunable multichannel filters and biosensor devices in integrated nano-optics.
    IEEE Photonics Journal 06/2014; 6(3):1-6. DOI:10.1109/JPHOT.2014.2323294 · 2.21 Impact Factor
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    • "Among them, the filter is a key component in the photonic circuits [16]. Recently, MIM filter with different schemes are designed, such as the teeth-shaped waveguide filter [19], the filters based on nanodisk resonator [16], rectangular resonator [20], and ring resonator [21], and the demultiplexing filter based on side-coupled cavities [22]. "
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    ABSTRACT: The transmission properties of the one-end-sealed (OES) metal–insulator–metal (MIM) waveguide are investigated by the finite difference time domain method. The results show that the OES MIM waveguide shows a filter-like behavior. The pass bands and stop bands in the transmission spectra are resulted from the superposition of the electromagnetic fields of the surface plasmon polaritons (SPPs) reflected at the sealed end and those of the SPPs propagating towards the open end. In addition, the effects of the structural parameters of the OES MIM waveguide on the transmission properties are also studied.
    Optik - International Journal for Light and Electron Optics 01/2013; 124(2):177–179. DOI:10.1016/j.ijleo.2011.11.066 · 0.68 Impact Factor
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