유한차분 시간영역법을 이용한 마이크로 디스크의 휘스퍼링 갤러리 모드 특성 해석

초록

We analyzed the simulated characteristic patterns of the whispering gallery modes generated in a high-Q, wide free spectral range dielectric micro-disk resonator and coupled to a submicron-width rectangular waveguide. The excitation input into the FDTD was a sinc function in the time domain and the transmitted output displayed characteristic peaks of resonance wavelength. When we exactly excited the micro-disk resonator with these resonance wavelengths, there existed 1st-, 2nd-, and 3rd-order whispering-gallery modes in the disk which were then coupled out to the waveguide channel.