FDTD simulation of hexagonal micropillar cavities

Frankie Kim Lam Tung; Ning Ma; Andrew W. Poon

doi:10.1117/12.498932

24 April 2003 FDTD simulation of hexagonal micropillar cavities

Frankie Kim Lam Tung, Ning Ma, Andrew W. Poon

Proceedings Volume 5116, Smart Sensors, Actuators, and MEMS; (2003) https://doi.org/10.1117/12.498932
Event: Microtechnologies for the New Millennium 2003, 2003, Maspalomas, Gran Canaria, Canary Islands, Spain

Abstract

Hexagonal micropillar (μ-pillar) cavities have been studied using 2-D finite-difference time-domain (FDTD) method. Singlemode resonances have been observed from a 2-μm sized hexagonal μ-pillar cavity that is selectively input-coupled. The simulated resonance wavelengths are consistent with the wavefront-matching condition based on ray-optics. The resonant field distribution has an integer number of field maxima along the cavity rim similar to whispering-gallery modes. Laterally waveguide-coupled hexagonal μ-pillar cavity channel add/drop filters with parallel and non-parallel waveguides have also been designed and simulated. Preliminary simulation of a 20-μm sized hexagonal μ-pillar cavity laterally coupled with 0.4-μm wide parallel waveguides demonstrated an extinction ratio of ≈ 8 dB, a signal/background ratio of ≈ 11 dB and a finesse of ≈ 5.

Citation Download Citation

Frankie Kim Lam Tung, Ning Ma, and Andrew W. Poon "FDTD simulation of hexagonal micropillar cavities", Proc. SPIE 5116, Smart Sensors, Actuators, and MEMS, (24 April 2003); https://doi.org/10.1117/12.498932

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