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Light-driven mechanical motion or vibration in microstructured glass fibres can result in very large Raman-like optomechanical nonlinearities that may be used, e.g., to modelock fibre ring lasers at a high harmonic of their round-trip frequency.
Coherent optically-driven GHz acoustic waves, tightly guided in the micron-sized core of photonic crystal fibre, enable reconfigurable dynamic optical isolation and switching, providing new functionality that is useful in various types of all-optical fibre systems.
It is shown that optomechanical forces can cause nonlinear self-channelling of light in two parallel silica nanowebs suspended inside a fibre capillary. The effective optical nonlinearity is a million times higher than the Kerr effect.
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