Analysis of Microdisk/Microring’s Surface Roughness Effect by Orthogonal Decomposition

Chengle Sui, Qiangmin Wang, Shilin Xiao, Pingqing Li

School of Information Security Engineering Shanghai Jiao Tong University, Shanghai, China.
State Key Lab of Advanced Optical Communication System and Networks, Shanghai Jiao Tong University, Shanghai, China.

DOI: 10.4236/opj.2013.32B068                

Abstract

Application of micro-resonator is limited by different types of surface inhomogeneity. The 1-th derivative of inhomogeneity (i.e. Δrˊ(φ)) affects the wave transport as well as the height of inhomogeneity (i.e. Δrˊ(φ)). A method based on orthogonal decomposition is proposed to analysis both scattering mechanism respectively. Then surface roughness effect on Q-factor of micro-disk waveguide gallery mode (WGM) resonator is investigated with our method and the analysis fits well with FDTD simulation results.

Keywords

Orthogonal Decomposition; Micro-resonator; Surface Roughness Effect

Conflicts of Interest

The authors declare no conflicts of interest.

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