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    • 6. 发明授权
    • Optical waveguide structure
    • 光波导结构
    • US07391948B2
    • 2008-06-24
    • US11093275
    • 2005-03-28
    • Lothar U. KempenRongchung TyanEdgar A. Mendoza
    • Lothar U. KempenRongchung TyanEdgar A. Mendoza
    • G02B6/26G02B6/10G02B6/12G02B6/14
    • G02B6/1228G02B6/2821
    • Waveguide structures in which light confinement strength varies along the direction of light propagation are described. The waveguides include a core adapted to propagate light along a path defined by the core and a cladding material that at least partially surrounds the core. The core and the cladding material each have a refractive index profile in the direction of light propagation. One or more of the profiles or lateral core dimensions are varied along the direction of light propagation, thereby causing the degree of light confinement to vary in the direction of light propagation. With such structures it is possible to tailor the velocity of the light propagating through the core and the confinement of the light to the core for any given core cross section. The structures may be used, for example, in mode-matching an input or output of a waveguide and in fabricating compact directional couplers.
    • 描述光限制强度沿光传播方向变化的波导结构。 波导包括适于沿着由芯限定的路径传播光的芯和至少部分地围绕芯的包层材料。 芯和包层材料各自在光传播的方向上具有折射率分布。 轮廓或横向纤芯尺寸中的一个或多个沿着光传播的方向变化,从而导致光限制的程度在光传播的方向上变化。 通过这种结构,可以定制通过芯体传播的光的速度以及将光限制到核心以用于任何给定的核心横截面。 该结构可以用于例如波导的输入或输出的模式匹配以及制造紧凑的定向耦合器中。