Experiment (IMAGE)

Imperial College London

Experiment

Caption

Top: An optical microresonator and a sharp tungsten tip. The tip's position can control the amount of back reflections in the microresonator. The authors show >30 dB suppression below the intrinsic backscattering. Bottom: The unwanted (intrinsic backscattered) light to the left is cancelled out by the out-of-phase light ("anti-light" similar to "anti-noise" in noise-canceling headphones) introduced by the metal tip.

Credit

Andreas Svela

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