A Fiber Frozen at -196°C Unlocks a New Way To Store Light

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A frozen-core optical fiber has revealed a powerful new way to control interactions between light and sound. Molten lava hardens into rock as it cools, much as the surface of a lake freezes during a cold winter. In both cases, a liquid becomes a solid, changing physical properties such as density and refractive index, which [...] Explore the content:


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