公开(公告)号：US07412127B2

公开(公告)日：2008-08-12

申请号：US11464781

申请日：2006-08-15

申请人： Wonjoo Suh ,  Mehmet Fatih Yanik ,  Olav Solgaard ,  Shanhui Fan

发明人： Wonjoo Suh ,  Mehmet Fatih Yanik ,  Olav Solgaard ,  Shanhui Fan

IPC分类号： G02B6/26 ,  G02B6/24

CPC分类号： B82Y20/00 ,  G02B6/1225

摘要： We introduce a mechanically tunable photonic crystal structure consisting of coupled photonic crystal slabs. Using both analytic theory, and first-principles finite-difference time-domain simulations, we demonstrate that the transmission and reflection coefficients for light normally incident upon such structures can be highly sensitive to nano-scale variations in the spacing between the slabs. Moreover, by specifically configuring the photonic crystal structures, the high sensitivity can be preserved in spite of significant fabrication-related disorders. We expect such a structure to play important roles in micro-mechanically tunable optical sensors and filters.

摘要翻译： 我们引入了由耦合光子晶体板组成的机械可调光子晶体结构。 使用分析理论和第一原理有限差分时域仿真，我们证明了通常在这种结构上入射的光的透射和反射系数可以对板之间的间距的纳米尺度变化高度敏感。 此外，通过具体配置光子晶体结构，可以保持高灵敏度，尽管有显着的制造相关障碍。 我们预计这种结构在微机械可调光学传感器和滤波器中起重要作用。

公开(公告)号：US07142364B2

公开(公告)日：2006-11-28

申请号：US10936837

申请日：2004-09-08

申请人： Wonjoo Suh ,  Olav Solgaard ,  Shanhui Fan

发明人： Wonjoo Suh ,  Olav Solgaard ,  Shanhui Fan

IPC分类号： G02B1/10

CPC分类号： B82Y20/00 ,  G02B6/1225

摘要： We theoretically introduce a new type of optical all-pass filter based on guided resonance in coupled photonic crystal slabs. The filter exhibits near-complete transmission for both on- and off-resonant frequencies and yet generates large resonant group delay. We further show that such a filter can be mechanically switched into a flat-top band rejection filter. We also show that a single photonic crystal slab can also function either as optical all-pass transmission or flattop reflection filter for normally incident light. Both filter functions are synthesized by designing the spectral properties of guided resonance in the slab. The structure is extremely compact along the vertical direction.

摘要翻译： 我们理论上引入了一种基于耦合光子晶体板中的引导谐振的新型光学全通滤波器。 滤波器对于开启和关闭谐振频率都表现出近乎完整的传输，并且产生大的谐振群延迟。 我们进一步表明，这种滤波器可以机械地切换成平顶带阻滤波器。 我们还表明，单个光子晶体板也可以作为普通入射光的光学全透镜或平面反射滤光片。 通过设计板坯中引导共振的光谱特性来合成滤波器功能。 该结构沿垂直方向非常紧凑。

公开(公告)号：US20060115211A1

公开(公告)日：2006-06-01

申请号：US11000679

申请日：2004-11-30

申请人： Mehmet Fatih Yanik ,  Wonjoo Suh ,  Zheng Wang ,  Shanhui Fan

发明人： Mehmet Fatih Yanik ,  Wonjoo Suh ,  Zheng Wang ,  Shanhui Fan

IPC分类号： G02B6/26

CPC分类号： G02B6/29343 ,  B82Y20/00 ,  G02B6/1225 ,  G02F1/365 ,  G02F2202/32

摘要： We introduce a new all-optical mechanism that can compress the bandwidth of light pulses to absolute zero, and bring them to a complete stop. The mechanism can be realized in a system consisting of a waveguide side-coupled to tunable resonators, which generates a photonic band structure that represents a classical analogue of the Electromagnetically Induced Transparency. The same system can also achieve a time-reversal operation. We demonstrate the operation of such a system by finite-difference time-domain simulations of an implementation in photonic crystals.

公开(公告)号：US20060050394A1

公开(公告)日：2006-03-09

申请号：US10936837

申请日：2004-09-08

申请人： Wonjoo Suh ,  Olav Solgaard ,  Shanhui Fan

发明人： Wonjoo Suh ,  Olav Solgaard ,  Shanhui Fan

IPC分类号： G02B1/10

CPC分类号： B82Y20/00 ,  G02B6/1225

摘要： We theoretically introduce a new type of optical all-pass filter based on guided resonance in coupled photonic crystal slabs. The filter exhibits near-complete transmission for both on- and off-resonant frequencies and yet generates large resonant group delay. We further show that such a filter can be mechanically switched into a flat-top band rejection filter. We also show that a single photonic crystal slab can also function either as optical all-pass transmission or flattop reflection filter for normally incident light. Both filter functions are synthesized by designing the spectral properties of guided resonance in the slab. The structure is extremely compact along the vertical direction.

公开(公告)号：US06909729B2

公开(公告)日：2005-06-21

申请号：US10008963

申请日：2001-10-25

申请人： Mihai Ibanescu ,  John D. Joannopoious ,  Yoel Fink ,  Steven G. Johnson ,  Shanhui Fan

发明人： Mihai Ibanescu ,  John D. Joannopoious ,  Yoel Fink ,  Steven G. Johnson ,  Shanhui Fan

IPC分类号： G02B6/02 ,  G02B6/028 ,  G02B6/036 ,  G02F1/01 ,  H01S3/063 ,  H01S3/067 ,  H01S3/30

CPC分类号： G02B6/023 ,  G02B6/02261 ,  G02F1/01 ,  G02F2202/32 ,  H01S3/063 ,  H01S3/06708

摘要： Optical components including a laser based on a dielectric waveguide extending along a waveguide axis and having a refractive index cross-section perpendicular to the waveguide axis, the refractive index cross-section supporting an electromagnetic mode having a zero group velocity for a non-zero wavevector along the waveguide axis.

摘要翻译： 光学部件包括基于沿着波导轴延伸并且具有垂直于波导轴线的折射率横截面的介质波导的激光器，所述折射率横截面支持非零波矢量具有零群速度的电磁模式 沿着波导轴。

公开(公告)号：US06853789B2

公开(公告)日：2005-02-08

申请号：US09884763

申请日：2001-06-19

申请人： Attila Mekis ,  Shanhui Fan ,  John D. Joannopoulos ,  Pierre Villeneuve

发明人： Attila Mekis ,  Shanhui Fan ,  John D. Joannopoulos ,  Pierre Villeneuve

IPC分类号： H01P7/00 ,  G02B6/10 ,  G02B6/26

CPC分类号： H01P1/2005 ,  H01P7/00

摘要： A method of making a low-loss electromagnetic wave resonator structure. The method includes providing a resonator structure, the resonator structure including a confining device and a surrounding medium. The resonator structure supporting at least one resonant mode, the resonant mode displaying a near-field pattern in the vicinity of said confining device and a far-field radiation pattern away from the confining device. The surrounding medium supports at least one radiation channel into which the resonant mode can couple. The resonator structure is specifically configured to reduce or eliminate radiation loss from said resonant mode into at least one of the radiation channels, while keeping the characteristics of the near-field pattern substantially unchanged.

摘要翻译： 制造低损耗电磁波谐振器结构的方法。 该方法包括提供谐振器结构，谐振器结构包括限制装置和周围介质。 支持至少一个谐振模式的谐振器结构，在所述约束装置附近显示近场图案的谐振模式和远离限制装置的远场辐射图。 周围的介质支持至少一个辐射通道，谐振模式可耦合到该辐射通道中。 谐振器结构被特别地配置为在保持近场图案的特性基本上不变的情况下减少或消除从所述谐振模式到辐射通道中的至少一个的辐射损耗。

公开(公告)号：US06624945B2

公开(公告)日：2003-09-23

申请号：US09781825

申请日：2001-02-12

申请人： Shanhui Fan ,  John D. Joannopoulos ,  George B. Kenney ,  Michal Lipson ,  Kevin M. Chen ,  Lionel C Kimerling

发明人： Shanhui Fan ,  John D. Joannopoulos ,  George B. Kenney ,  Michal Lipson ,  Kevin M. Chen ,  Lionel C Kimerling

IPC分类号： G02B2700

CPC分类号： G02B5/288 ,  G02B5/0833 ,  G02B26/001

摘要： An electromagnetic wavelength filter that allows the transmission of electromagnetic energy within a narrow range of wavelengths while reflecting incident electromagnetic energy at other wavelengths. The filter includes at least one cavity region; and at least two reflectors surrounding the at least one cavity region, at least one of the reflectors being an omni-directional reflector. The omni-directional reflector includes a structure with a surface and an index of refraction variation perpendicular to the surface, and the omni-directional reflector is specifically configured to exhibit high omni-directional reflection for a predetermined range of frequencies of incident electromagnetic energy for any angle of incidence and any polarization.

公开(公告)号：US06512866B1

公开(公告)日：2003-01-28

申请号：US09619926

申请日：2000-07-20

申请人： Shanhui Fan ,  Pierre R. Villeneuve ,  John D. Joannopoulos ,  Brent E. Little ,  Hermann A. Haus

发明人： Shanhui Fan ,  Pierre R. Villeneuve ,  John D. Joannopoulos ,  Brent E. Little ,  Hermann A. Haus

IPC分类号： G02B6293

CPC分类号： G02F1/3132 ,  G02B6/12007 ,  G02B6/1225 ,  G02F1/17 ,  G02F2201/066 ,  G02F2202/32 ,  G02F2203/15 ,  G02F2203/585 ,  H04Q3/00

摘要： 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.

摘要翻译： 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。

公开(公告)号：US06424763B1

公开(公告)日：2002-07-23

申请号：US09698305

申请日：2000-10-27

申请人： Pierre R. Villeneuve ,  Shanhui Fan ,  Gale S. Petrich ,  Leslie A. Kolodziejski ,  John D. Joannopoulos

发明人： Pierre R. Villeneuve ,  Shanhui Fan ,  Gale S. Petrich ,  Leslie A. Kolodziejski ,  John D. Joannopoulos

IPC分类号： G02B642

CPC分类号： G02F1/011 ,  B82Y10/00 ,  G02F1/3132 ,  G02F2201/307 ,  G02F2203/055 ,  G02F2203/15 ,  G02F2203/585

摘要： A tunable electromagnetic field frequency filter having an input waveguide which carries a signal including at least one desired frequency, and an output waveguide. A resonator-system is coupled to the input and output waveguides and is operable for the selective transfer of the at least one desired frequency to the output waveguide. The resonator-system supports at least two system modes, and includes at least three reflectors with at least two different reflectivity spectra. At least one of the reflectivity spectra is tuned such that at least two of the system-modes have substantially the same frequency when the transfer occurs substantially.

摘要翻译： 一种具有输入波导的可调谐电磁场频率滤波器，其输入包括至少一个期望频率的信号和输出波导。 谐振器系统耦合到输入和输出波导，并且可操作用于将至少一个期望频率选择性地传送到输出波导。 谐振器系统支持至少两个系统模式，并且包括具有至少两个不同反射率光谱的至少三个反射器。 至少一个反射光谱被调谐，使得至少两个系统模式在基本上发生转印时具有基本相同的频率。

公开(公告)号：US06134043A

公开(公告)日：2000-10-17

申请号：US132580

申请日：1998-08-11

申请人： Steven G. Johnson ,  Shanhui Fan ,  Pierre R. Villeneuve ,  Leslie Kolodziejski ,  John D. Joannopoulos

发明人： Steven G. Johnson ,  Shanhui Fan ,  Pierre R. Villeneuve ,  Leslie Kolodziejski ,  John D. Joannopoulos

IPC分类号： G02B6/12 ,  C30B33/00 ,  G02B6/122 ,  G02B26/00

CPC分类号： C30B33/00 ,  B82Y20/00 ,  C30B29/60 ,  G02B6/1225

摘要： A composite photonic crystal structure comprising a guide crystal configured in a lane having a dielectric periodicity in at least a first direction in the plane; and barrier crystals configured above and below the guide crystal to confine light within the guide crystal, the barrier crystals having a dielectric periodicity in at least a second direction not in the plane. In another embodiment, there is provided a composite photonic crystal structure comprising a guide crystal configured in a plane having a dielectric periodicity in at least one dimension; and a barrier crystal configured adjacent the guide crystal to confine light within the guide crystal, the barrier crystal having a dielectric periodicity in at least two dimensions.

摘要翻译： 一种复合光子晶体结构，包括在平面中在至少第一方向上具有介电周期的通道中构造的引导晶体; 以及配置在引导晶体的上方和下方的阻挡晶体，以将光限制在引导晶体内，所述阻挡晶体在不在平面中的至少第二方向上具有介电周期性。 在另一个实施例中，提供一种复合光子晶体结构，其包括在至少一个维度上具有介电周期的平面中构造的引导晶体; 以及与引导晶体相邻配置以将光限制在引导晶体内的阻挡晶体，所述阻挡晶体在至少两个维度上具有介电周期性。