Investigation of vertical radiation loss for whispering-gallery modes in 3-D microresonators by FDTD simulation

The vertical radiation loss of three-dimensional (3-D) microresonators is investigated by 3-D finite-difference time-domain (FDTD) simulation. The simulation shows that the vertical radiation causes an important loss in the microresonators with weak waveguiding, and result in decrease of the quality factors (Q-factors) of whispering-gallery (WG) modes. Through the simulation, we find that TM-like modes have much weaker vertical radiation loss than TE-like modes. High Q-factor TM-like modes are observed in the 3-D microresonators with weak vertical waveguiding, but the Q-factors of TE-like modes decrease greatly.

The vertical radiation loss of three-dimensional (3-D) microresonators is investigated by 3-D finite-difference time-domain (FDTD) simulation. The simulation shows that the vertical radiation causes an important loss in the microresonators with weak waveguiding, and result in decrease of the quality factors (Q-factors) of whispering-gallery (WG) modes. Through the simulation, we find that TM-like modes have much weaker vertical radiation loss than TE-like modes. High Q-factor TM-like modes are observed in the 3-D microresonators with weak vertical waveguiding, but the Q-factors of TE-like modes decrease greatly.

zhangdi于2010-03-29批量导入

zhangdi于2010-03-29批量导入

IEEE.; IEEE Laser & Electro Opt Soc.; IEEE/LEOS Poland Chapter.; COST.; Instytut Lacznosci.; iscom.; IT.; Univ Degli Studio, Roma Tor Vergata.; Univ Degli Studio, ROMA TRE.; Inst Supenore Antinicendi.; e-Photon ONe.

Chinese Acad Sci, Inst Semicond, State Key Lab Integrated Optoelect, Beijing 100083, Peoples R China

IEEE.; IEEE Laser & Electro Opt Soc.; IEEE/LEOS Poland Chapter.; COST.; Instytut Lacznosci.; iscom.; IT.; Univ Degli Studio, Roma Tor Vergata.; Univ Degli Studio, ROMA TRE.; Inst Supenore Antinicendi.; e-Photon ONe.