### Abstract

An identical double micro-ring resonator is investigated using finite-difference time-domain algorithm of the full-wave Maxwell's equations (FullWAVE/FDTD). The exploration shows that at wavelength of 1.55 μm the resonance is only achieved when the ring radius is 1 μm, the gap between waveguides is 0.1 μm, the waveguide width is 0.2 μm, and the core-cladding refractive index difference is equal to 2. A general rule is then concluded for an optimal design of an identical double micro-ring resonator at a given wavelength: the waveguide width needs be larger than the gap between waveguides and the ring radius bigger than two times of the summation of the waveguide width and the gap between waveguides. Moreover, a compromise must be made between the ring radius and the core-cladding refractive index difference because bending loss decreases with the ring radius and the core-cladding refractive index difference increasing but the higher refractive index difference requires the smaller ring radius.

Original language | English |
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Title of host publication | 2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010 |

Pages | 1149-1153 |

Number of pages | 5 |

DOIs | |

Publication status | Published - 29 Nov 2010 |

Event | 5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems - Xiamen, China Duration: 20 Jan 2010 → 23 Jan 2010 Conference number: 5 |

### Conference

Conference | 5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems |
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Abbreviated title | NEMS 2010 |

Country | China |

City | Xiamen |

Period | 20/01/10 → 23/01/10 |

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### Cite this

*2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010*(pp. 1149-1153). [5592534] https://doi.org/10.1109/NEMS.2010.5592534

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*2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010.*, 5592534, pp. 1149-1153, 5th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, Xiamen, China, 20/01/10. https://doi.org/10.1109/NEMS.2010.5592534

**Modeling and Simulation of an Identical Double Micro-Ring Resonator.** / Jiang, Xiangqian; Yang, Shuming.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Modeling and Simulation of an Identical Double Micro-Ring Resonator

AU - Jiang, Xiangqian

AU - Yang, Shuming

PY - 2010/11/29

Y1 - 2010/11/29

N2 - An identical double micro-ring resonator is investigated using finite-difference time-domain algorithm of the full-wave Maxwell's equations (FullWAVE/FDTD). The exploration shows that at wavelength of 1.55 μm the resonance is only achieved when the ring radius is 1 μm, the gap between waveguides is 0.1 μm, the waveguide width is 0.2 μm, and the core-cladding refractive index difference is equal to 2. A general rule is then concluded for an optimal design of an identical double micro-ring resonator at a given wavelength: the waveguide width needs be larger than the gap between waveguides and the ring radius bigger than two times of the summation of the waveguide width and the gap between waveguides. Moreover, a compromise must be made between the ring radius and the core-cladding refractive index difference because bending loss decreases with the ring radius and the core-cladding refractive index difference increasing but the higher refractive index difference requires the smaller ring radius.

AB - An identical double micro-ring resonator is investigated using finite-difference time-domain algorithm of the full-wave Maxwell's equations (FullWAVE/FDTD). The exploration shows that at wavelength of 1.55 μm the resonance is only achieved when the ring radius is 1 μm, the gap between waveguides is 0.1 μm, the waveguide width is 0.2 μm, and the core-cladding refractive index difference is equal to 2. A general rule is then concluded for an optimal design of an identical double micro-ring resonator at a given wavelength: the waveguide width needs be larger than the gap between waveguides and the ring radius bigger than two times of the summation of the waveguide width and the gap between waveguides. Moreover, a compromise must be made between the ring radius and the core-cladding refractive index difference because bending loss decreases with the ring radius and the core-cladding refractive index difference increasing but the higher refractive index difference requires the smaller ring radius.

KW - Gap

KW - Micro-Ring Resonator

KW - Refractive Index Difference

KW - Ring Radius

KW - Waveguide Width

UR - http://www.scopus.com/inward/record.url?scp=78649250257&partnerID=8YFLogxK

U2 - 10.1109/NEMS.2010.5592534

DO - 10.1109/NEMS.2010.5592534

M3 - Conference contribution

AN - SCOPUS:78649250257

SN - 9781424465439

SP - 1149

EP - 1153

BT - 2010 IEEE 5th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2010

ER -