Title :
Coupling properties of whispering gallery modes
Author :
Spillane, S.M. ; Kippenberg, T.J. ; Vahala, K.J.
Author_Institution :
Dept. of Appl. Phys., California Inst. of Technol., Pasadena, CA, USA
Abstract :
Summary form only given. We investigated the modification of external coupling properties in the presence of modal coupling using high-Q silica microspheres coupled to fiber-tapers. The long photon lifetime of high-Q microresonators makes possible a counter-intuitive effect where minute scattering gives rise to the regime of strong modal coupling. In this regime, scattering into the oppositely oriented mode is the dominant scattering process. We demonstrate that it is possible to experimentally obtain extremely large modal coupling, while maintaining quality factors of 10/sup 8/. Normalized modal splitting ratios as large as 30 were observed.
Keywords :
coupled mode analysis; microcavities; optical fibre couplers; SiO/sub 2/; counter-intuitive effect; coupling properties; fiber-tapers; high-Q microresonators; high-Q silica microspheres; long photon lifetime; modal coupling; normalized modal splitting ratios; scattering process; traveling-wave-resonator; whispering gallery modes; Couplings; Laser theory; Nonlinear optics; Optical filters; Optical resonators; Optical scattering; Particle scattering; Silicon compounds; Ultrafast optics; Whispering gallery modes;
Conference_Titel :
Lasers and Electro-Optics, 2002. CLEO '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-706-7
DOI :
10.1109/CLEO.2002.1033453
