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    • 5. 发明授权
    • Tunable cross-coupling evanescent mode optical devices and methods of making the same
    • 可调谐交叉耦合ev逝模式光学器件及其制造方法
    • US06956221B2
    • 2005-10-18
    • US10356908
    • 2003-02-03
    • Russell W. Gruhlke
    • Russell W. Gruhlke
    • G01N21/17G01N21/64G02B6/122G02B6/124
    • G01N21/648B82Y20/00G01N21/1717G01N2021/1721G02B6/1226G02B6/124
    • Tunable cross-coupling evanescent mode optical devices and methods of making the same are described. In one aspect, a tunable optical device includes a first layer, a second layer, a metal layer disposed between the first and second layers, and an electrode. The first layer is supportable of electromagnetic field modes over a range of wavelengths that includes a target wavelength range. The second layer is disposed between the metal layer and the electrode and has an index of refraction that is adjustable over a range of values. The metal layer is disposed between the first and second layers and has at least one corrugated metal film region with a corrugation periodicity enabling cross-coupling of evanescent modes of equal wavelength within the target wavelength range and localized on opposite sides of the metal layer with different respective wavenumbers. The cross-coupling evanescent modes have a cross-coupling wavelength determined at least in part by the corrugation periodicity and the index of refraction of the first and second layers and is substantially unaffected by the electrode.
    • 描述了可调谐交叉耦合ev逝模式光学器件及其制造方法。 一方面,可调谐光学器件包括第一层,第二层,设置在第一层和第二层之间的金属层以及电极。 第一层可支持包括目标波长范围的波长范围内的电磁场模式。 第二层设置在金属层和电极之间,并且具有可在一定范围内调节的折射率。 金属层设置在第一层和第二层之间,并且具有至少一个具有波纹周期性的波纹金属膜区域,其能够使目标波长范围内相等波长的渐逝模式交叉耦合并且在不同的金属层的相对侧上定位 各自的波数。 交叉耦合ev逝模式具有至少部分地由第一和第二层的波纹周期和折射率确定的交叉耦合波长,并且基本上不受电极的影响。