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    • 6. 发明授权
    • Optical waveguide crossings
    • 光波导交叉
    • US06198860B1
    • 2001-03-06
    • US09158455
    • 1998-09-22
    • Steven G. JohnsonShanhui FanPierre R. VilleneuveChristina ManolatouHermann A. HausJohn D. Joannopoulos
    • Steven G. JohnsonShanhui FanPierre R. VilleneuveChristina ManolatouHermann A. HausJohn D. Joannopoulos
    • G02B626
    • B82Y20/00G02B6/1225G02B2006/1215
    • An optical waveguide structure including a first waveguide, a second waveguide that intersects with the first waveguide, and a photonic crystal resonator system at the intersection of the first and second waveguides. In accordance with another embodiment there is provided an optical waveguide crossing structure including a first waveguide that propagates signals in a first direction, a second waveguide that intersects with the first waveguide and propagates signals in a second direction, and a photonic crystal crossing region at the intersection of the first and second waveguides that prevents crosstalk between the signals of the first and second waveguides. In accordance with another embodiment of the invention there is provided an optical waveguide structure including a first waveguide, a second waveguide, and a resonator system at the intersection of the first and second waveguides, the intersection possessing a first mirror plane that is parallel to the first waveguide, the resonator system supporting a first resonant mode that includes different symmetry with guided modes in the first waveguide with respect to the first mirror plane, the resonator system substantially reduces crosstalk from the second waveguide to said first waveguide.
    • 包括第一波导,与第一波导相交的第二波导的光波导结构和在第一和第二波导的交叉处的光子晶体谐振器系统。 根据另一实施例,提供了一种光波导交叉结构,包括:沿第一方向传播信号的第一波导,与第一波导相交并沿第二方向传播信号的第二波导,以及在第二波导处的光子晶体交叉区 第一和第二波导的交点,其防止第一和第二波导的信号之间的串扰。 根据本发明的另一实施例,提供了一种光波导结构,其包括第一波导,第二波导和谐振器系统,在第一和第二波导的交叉处,交叉点具有平行于第一波导的第一反射镜平面 第一波导,谐振器系统支持第一谐振模式,其包括与第一波导相对于第一镜面平面的引导模式不同的对称性,所述谐振器系统基本上减少了从第二波导到所述第一波导的串扰。
    • 7. 发明授权
    • High efficiency channel drop filter
    • 高效率通道下降滤波器
    • US6130969A
    • 2000-10-10
    • US968314
    • 1997-11-12
    • Pierre R. VilleneuveShanhui FanJohn D. JoannopoulosHermann A. Haus
    • Pierre R. VilleneuveShanhui FanJohn D. JoannopoulosHermann A. Haus
    • G02B6/12G02B6/122G02F1/01G02F1/313G02B6/293
    • B82Y20/00G02B6/12007G02B6/1225G02F1/011G02F1/3132
    • A highly efficient channel drop filter. The filter employs a coupling element including a resonator-system between two waveguides, which contains at least two resonant modes. The resonator-system includes one or more interacting resonant cavities which in addition to being coupled to the waveguides, can also be coupled directly among themselves and indirectly among themselves via the waveguides. Each component of the coupling element can be configured or adjusted individually. The geometry and/or dielectric constant/refractive index of the resonator-system are configured so that the frequencies and decay rates of the resonant modes are made to be substantially the same. The filter can achieve 100% signal transfer between the waveguides at certain frequencies, while completely prohibiting signal transfer at other frequencies. In exemplary embodiments, the filter is configured with photonic crystals. In accordance with alternative embodiments of the invention, there are provided channel drop filter devices with flat-top and straight-sidewall lineshape characteristics. These lineshape characteristics are realized by using several resonances to couple the waveguides, and by designing the relative positioning of the frequency of each resonance with respect to one another.
    • 高效的通道降滤波器。 滤波器采用耦合元件,其包括在两个波导之间的谐振器系统,其包含至少两个谐振模式。 谐振器系统包括一个或多个相互作用的谐振腔,除了耦合到波导之外,它们也可以直接耦合到它们之间并通过波导间接地彼此间耦合。 耦合元件的每个部件可以单独配置或调整。 谐振器系统的几何形状和/或介电常数/折射率被配置为使谐振模式的频率和衰减速率基本上相同。 滤波器可以在某些频率下实现波导之间的100%信号传输,同时完全禁止其他频率的信号传输。 在示例性实施例中,滤光器配置有光子晶体。 根据本发明的替代实施例,提供了具有平顶和直侧壁线条形状特征的通道下落滤波器装置。 这些线形特征通过使用多个谐振来耦合波导并且通过设计每个谐振的频率相对于彼此的相对定位来实现。
    • 8. 发明授权
    • High efficiency channel drop filter with absorption induced on/off switching and modulation
    • 具有吸收感应开/关切换和调制的高效率通道下降滤波器
    • US06512866B1
    • 2003-01-28
    • US09619926
    • 2000-07-20
    • Shanhui FanPierre R. VilleneuveJohn D. JoannopoulosBrent E. LittleHermann A. Haus
    • Shanhui FanPierre R. VilleneuveJohn D. JoannopoulosBrent E. LittleHermann A. Haus
    • G02B6293
    • G02F1/3132G02B6/12007G02B6/1225G02F1/17G02F2201/066G02F2202/32G02F2203/15G02F2203/585H04Q3/00
    • A highly efficient channel drop filter. The filter employs a coupling element including a resonator-system between two waveguides, which contains at least two resonant modes. The resonator-system includes one or more interacting resonant cavities which in addition to being coupled to the waveguides, can also be coupled directly among themselves and indirectly among themselves via the waveguides. Each component of the coupling element can be configured or adjusted individually. The geometry and/or dielectric constant/refractive index of the resonator-system are configured so that the frequencies and decay rates of the resonant modes are made to be substantially the same. The filter can achieve 100% signal transfer between the waveguides at certain frequencies, while completely prohibiting signal transfer at other frequencies. In exemplary embodiments, the filter is configured with photonic crystals. In accordance with alternative embodiments of the invention, the filter is configured as an absorption induced on/off switch and modulator. The switching action is achieved with either electrical or optical absorption.
    • 高效的通道降滤波器。 滤波器采用耦合元件,其包括在两个波导之间的谐振器系统,其包含至少两个谐振模式。 谐振器系统包括一个或多个相互作用的谐振腔,除了耦合到波导之外,它们也可以直接耦合到它们之间并通过波导间接地彼此间耦合。 耦合元件的每个部件可以单独配置或调整。 谐振器系统的几何形状和/或介电常数/折射率被配置为使谐振模式的频率和衰减速率基本上相同。 滤波器可以在某些频率下实现波导之间的100%信号传输,同时完全禁止其他频率的信号传输。 在示例性实施例中,滤光器配置有光子晶体。 根据本发明的替代实施例,滤波器被配置为吸收诱导的开/关开关和调制器。 开关动作通过电吸收或光吸收来实现。