Observation of whispering-gallery mode splitting in spherical resonator  

作　　者：LIN Guo-ping ZHANG Lei MALe SUN Ming-hao XU Hui-ying CAI Zhi-ping 

机构地区：[1]Department of Physics, Xiamen University, Xiamen 361005, China [2]Department of Electronic Engineering, Xiamen University, Xiamen 361005, China

出　　处：《Optoelectronics Letters》2007年第3期231-233,共3页光电子快报（英文版）

基　　金：This projec was supported by National Natural Science Foundation of China (60277026,90206039)

摘　　要：We report the observation of the splitting of whispering-gallery mode in the silica spherical resonator. To characterize the fused-silica spherical resonator,an evanescent fiber taper coupling technique is employed. The coupling system consists of a fiber taper with a diameter of about 2.8 microns and a fused-silica spherical resonator with a diameter of about 143 microns. By injecting the laser power into the fiber taper,a number of narrow absorption peaks with equal peak spacing of 3.7 nm are observed in a wide spectral range. After replacing the resonator by the other one with the shape being slightly modified,whispering-gallery mode splitting in the spherical resonator is observed. The wavelength spacing between adja-cent peaks is 0.32 nm,much smaller than that of the previous one.

关 键 词：二氧化硅 球形光学谐振器 回音壁模式 分裂 

分 类 号：O431.2[机械工程—光学工程]