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PENEKANAN UNTUK MENDORONG PENYEBARAN BRILLOUIN PADA SERAT OPTIK
PENEKANAN UNTUK MENDORONG PENYEBARAN BRILLOUIN PADA SERAT OPTIK
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机译:增强布里渊在光纤上的扩散的压力
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摘要
Suppression of stimulated Brillouin scattering (SBS) by broadening the energy spectrum of participating SBS photons and/or phonons is achieved in an optical fiber having a core with both radially nonuniform viscosity and CTE profiles provided by alternating layers of glass modifying dopants such as phosphorus and fluorine. The nonuniform thermal expansion and viscosity profiles impart a residual, permanent, nonuniform stress in the fiber. The SBS suppressing effect provided by the nonuniform stress can be controlled and enhanced by applying a uniform or nonuniform tensile force to the fiber as it is being drawn. A preform for the fiber is also disclosed.
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