Title :
Coupling light from a high-Q microsphere resonator using a UV-induced surface grating
Author :
Ilchenko, V.S. ; Starodubov, D.S. ; Gorodetsky, M.L. ; Maleki, L. ; Feinberg, J.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
Abstract :
Summary form only given. High-Q microspheres with whispering-gallery modes have very narrow resonances that can be used for fiber-optic filters, ultra-compact narrow-linewidth lasers and optical/microwave oscillators. In this report we demonstrate, for the first time to our knowledge, far-field coupling of light from a microsphere resonator via a refractive-index grating written onto the sphere´s surface. The grating is written by shining a pattern of UV light onto the surface doped with germanium to increase its photosensitivity.
Keywords :
Q-factor; diffraction gratings; germanium; micro-optics; optical resonators; silicon compounds; SiO/sub 2/:Ge; UV light; UV-induced surface grating; far-field coupling; germanium; high-Q microsphere resonator; high-Q microspheres; narrow resonances; photosensitivity; refractive-index grating; silica spheres; whispering-gallery modes; Fiber lasers; Gratings; Microwave filters; Optical coupling; Optical fiber filters; Optical refraction; Optical resonators; Resonance; Resonator filters; Whispering gallery modes;
Conference_Titel :
Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
1-55752-595-1
DOI :
10.1109/CLEO.1999.833888
