Physical Review Letters · 2000 · 906 citations · 9 references
Natural SciencesPhysicsOptical MaterialsOpticsPhotonicsFiber OpticsOptical FibersOptical ResonatorsPhotonic MaterialsQuantum OpticsQuantum OptoelectronicsExtinctionFiber CouplersFiber CouplingNear-field SensingResonator CouplingResonator LossesScattering LossWhispering-gallery-mode Resonators
The study reports the observation of critical coupling in a high‑Q fused‑silica microsphere whispering‑gallery mode resonator coupled to a fiber taper. The experiment uses a high‑Q (~10⁷) fused‑silica microsphere resonator coupled to a fiber taper to achieve critical coupling. The experiment achieved extremely efficient power transfer to the high‑Q resonator, with off‑resonance scattering loss below 0.3 %, on‑resonance extinction of up to 26 dB, and demonstrated potential for applications in near‑field sensing and quantum optics.
We present the observation of critical coupling in a high- Q fused-silica microsphere whispering-gallery mode resonator coupled to a fiber taper. Extremely efficient and controlled power transfer to high- Q ( approximately 10(7)) resonators has been demonstrated. Off-resonance scattering loss was measured to be less than 0.3%. On-resonance extinction in transmitted optical power through the fiber coupler was measured as high as 26 dB at the critical coupling point. This result opens up a range of new applications in fields as diverse as near-field sensing and quantum optics.
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Waves and Fields in Optoelectronics
M. Bertolotti · Optica Acta International Journal of Optics · 1985 · 1.5K citations
High-Q measurements of fused-silica microspheres in the near infrared
D. W. Vernooy, Vladimir S. Ilchenko, Hideo Mabuchi et al. · Optics Letters · 1998 · 494 citations