Title :
Microsphere resonator mode characterization by pedestal anti-resonant reflecting waveguide coupler
Author :
Laine, J.-P. ; Little, B.E. ; Lim, D.R. ; Tapalian, H.C. ; Kimerling, L.C. ; Haus, H.A.
Author_Institution :
Res. Lab. of Electron., MIT, Cambridge, MA, USA
Abstract :
The stripline pedestal anti-resonant reflecting optical waveguide (SPARROW) is an efficient and robust coupling device for silica microsphere whispering-gallery-mode excitation. The concept incorporates alternating layers of Si and SiO/sub 2/, designed to isolate the mode of the sphere and the waveguide from the dielectric substrate. Experimental characterizations of this coupling technique are presented, including displacement measurements, and whispering-gallery-mode intensity mapping. Power extraction efficiencies of over 98% are reported.
Keywords :
displacement measurement; integrated optics; optical resonators; optical waveguides; reflectivity; SPARROW; Si; SiO/sub 2/; coupling technique; dielectric substrate; isplacement measurements; microsphere resonator mode characterization; pedestal anti-resonant reflecting waveguide coupler; power extraction efficiencies; robust coupling device; silica microsphere whispering-gallery-mode excitation; stripline pedestal anti-resonant reflecting optical waveguide; whispering-gallery-mode intensity mapping; Laboratories; Microcavities; Optical coupling; Optical resonators; Optical sensors; Optical waveguides; Q factor; Robustness; Silicon compounds; Stripline;
Journal_Title :
Photonics Technology Letters, IEEE
