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：US6101300A

公开(公告)日：2000-08-08

申请号：US80037

申请日：1998-05-15

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： G02B6/12 ,  G02B6/122 ,  G02F1/01 ,  G02F1/025 ,  G02F1/313 ,  G02F1/365 ,  G02B6/293

CPC分类号： G02F1/3132 ,  B82Y20/00 ,  G02B6/12007 ,  G02B6/1225 ,  H04Q3/00 ,  G02F1/17 ,  G02F2201/066 ,  G02F2202/32 ,  G02F2203/15 ,  G02F2203/585

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.

公开(公告)号：US6078605A

公开(公告)日：2000-06-20

申请号：US027383

申请日：1998-02-20

申请人： Brent E. Little ,  Sai Tak Chu ,  Hermann A. Haus

发明人： Brent E. Little ,  Sai Tak Chu ,  Hermann A. Haus

IPC分类号： G02B6/12 ,  G02B6/122 ,  G02F1/01 ,  H01S3/083 ,  G02B6/24 ,  G02F1/35 ,  H01S3/03 ,  G02F6/26

CPC分类号： G02B6/12007 ,  G02B6/122 ,  G02F1/01 ,  G02F1/011 ,  G02B2006/12109

摘要： A device and method of track changing an optical signal beam in response to the frequency selective phase characteristics of a resonator. The resonator is side-coupled to a single optical beam and only affects that beam's phase, without disturbing its amplitude to any significant degree. For all resonator and input beam configurations, the phase-shift at a resonant frequency is always .pi., thus the relative switching characteristics are similar regardless of the exact configuration. Track changing is accomplished through interferometry. The signal, after having interacted with the resonator, is made to interfere with a reference beam. The reference beam is created by dividing an input signal into two paths, one which interacts with the resonator, the other which serves as the reference. In an alternative embodiment, the device acts as a mode converter. The resonator converts an even system-mode to an odd system-mode (or vise versa). At the output of the device is an interference filter, or mode filter, which redirects the signal according to the phase response of the resonator.

摘要翻译： 响应于谐振器的频率选择相位特性来跟踪改变光信号光束的装置和方法。 谐振器侧耦合到单个光束，并且仅影响该光束的相位，而不会以任何显着的程度扰乱其幅度。 对于所有谐振器和输入波束配置，谐振频率下的相移始终为pi，因此无论精确配置如何，相对开关特性都是相似的。 轨道变化是通过干涉测量完成的。 在与谐振器相互作用之后，该信号被干扰参考光束。 通过将输入信号分成两个路径，一个与谐振器相互作用，另一个作为参考来产生参考光束。 在替代实施例中，该装置用作模式转换器。 谐振器将偶数系统模式转换为奇数系统模式（或反之亦然）。 在器件的输出端是干扰滤波器或模式滤波器，其根据谐振器的相位响应来重定向信号。

公开(公告)号：US6052495A

公开(公告)日：2000-04-18

申请号：US944009

申请日：1997-10-01

申请人： Brent E. Little ,  James S. Foresi ,  Hermann A. Haus

发明人： Brent E. Little ,  James S. Foresi ,  Hermann A. Haus

IPC分类号： G02F1/01 ,  G02F1/015 ,  G02F1/313 ,  G02B6/293

CPC分类号： G02F1/011 ,  G02F1/3133 ,  G02F2001/0155 ,  G02F2203/055

摘要： The invention provides an optical switch and modulator which uses a closed loop optical resonator. The optical resonator is a dielectric cavity whose primary function is to store optical power. Various structures are possible, and a particularly advantageous one is a ring shaped cavity. The wavelength response at the output port of a ring resonator side coupled to two waveguides is determined by the details of the resonator, and the coupling between the resonator and the waveguides. By coupling to adjacent resonators, the modulator response can be improved over that of a single resonator. One such improvement is in modulator efficiency, which is defined as the ratio of the change in optical intensity at the output, to a change in absorption in the ring waveguides. Absorption is used for switching and modulation without incurring significant optical attenuation. Another improvement involves making the resonance insensitive to small deviations in wavelength or index change. The latter improves fabrication tolerances and compensates for possible drift of the signal wavelength. Collectively, the behavior of multiple coupled resonators yields higher order responses.

摘要翻译： 本发明提供一种使用闭环光谐振器的光开关和调制器。 光谐振器是其主要功能是存储光功率的介电腔。 各种结构是可能的，并且特别有利的是环形腔。 耦合到两个波导的环形谐振器侧的输出端口处的波长响应由谐振器的细节以及谐振器和波导之间的耦合决定。 通过耦合到相邻的谐振器，调制器响应可以比单个谐振器的响应得到改善。 一个这样的改进是调制器效率，其被定义为输出处的光强度的变化与环形波导中的吸收变化的比率。 吸收用于切换和调制，而不会引起显着的光衰减。 另一个改进是使谐振对波长或折射率变化的小偏差不敏感。 后者提高了制造公差，并补偿了信号波长的可能漂移。 总的来说，多个耦合谐振器的行为产生更高阶的响应。

公开(公告)号：US20110158579A1

公开(公告)日：2011-06-30

申请号：US12647039

申请日：2009-12-24

申请人： Brent E. Little

发明人： Brent E. Little

IPC分类号： G02B6/00

CPC分类号： G02B6/126 ,  G02B6/2726 ,  G02B6/2766

摘要： Consistent with the present disclosure, a rotator is provided that includes multiple stages, each of which including waveplate and delay sections. The waveplate and delay sections each exhibit birefringence and have polarization eigen states that are tilted with respect to each other. The lengths of the delay and waveplate sections are selected such that, for example, a relatively high extinction ratio can be achieved over a relatively wide range of fabrication perturbations to the waveplates or delay sections and over a relatively wide range of wavelengths. Accordingly, the rotator consistent with the present disclosure is more tolerant of deviations in the optical signal polarization.

摘要翻译： 根据本公开，提供了包括多个级的旋转器，每个级包括波片和延迟部分。 波片和延迟部分各自表现出双折射并且具有相对于彼此倾斜的偏振特征状态。 选择延迟和波片部分的长度，使得例如在波片或延迟部分的相对宽的制造扰动范围内以及相对较宽的波长范围内可实现相对较高的消光比。 因此，符合本公开的旋转器更能容忍光信号偏振的偏差。

公开(公告)号：US07961994B2

公开(公告)日：2011-06-14

申请号：US12239940

申请日：2008-09-29

申请人： Wei Chen ,  Brent E. Little

发明人： Wei Chen ,  Brent E. Little

IPC分类号： G02F1/135 ,  G02F1/136 ,  G02F1/1343

CPC分类号： G02B6/4204 ,  G02B6/2813

摘要： An optical device includes a first waveguide having an end portion configured to receive an optical signal, the optical signal having a fundamental mode; a second waveguide having an end portion spaced from the end portion of the first waveguide; and a cladding layer surrounding the first and second waveguides. The first waveguide is configured such that the optical signal undergoes multimode interference to focus the fundamental mode at the end portion of the second waveguide.

摘要翻译： 光学装置包括：第一波导，其具有被配置为接收光信号的端部，所述光信号具有基模; 第二波导，其具有与第一波导的端部间隔开的端部; 以及围绕第一和第二波导的包覆层。 第一波导被配置为使得光信号经历多模干涉以将基模聚焦在第二波导的端部处。

公开(公告)号：US07702188B2

公开(公告)日：2010-04-20

申请号：US11782457

申请日：2007-07-24

申请人： Brent E. Little ,  Wei Chen

发明人： Brent E. Little ,  Wei Chen

IPC分类号： G02F1/295 ,  G02B6/26

CPC分类号： G02B6/2773 ,  G02B6/1228 ,  G02B6/126 ,  G02B6/136 ,  G02B6/272 ,  G02B6/2766 ,  G02B27/283

摘要： A polarization beam splitter-polarization rotator-polarization beam combiner optical structure comprising a pair of polarization rotators having a polarization beam splitter associated with the input ends of the two polarization rotators, and a polarization beam combiner associated with output ends of the two polarization rotators, and a method of purifying a light signal comprising TE and TM modes by disassociating the primary TE and TM modes from first order splitter and rotation error components.

摘要翻译： 一种偏振分束器 - 偏振旋转器 - 偏振光束组合器光学结构，包括具有与两个偏振旋转器的输入端相关联的偏振分束器的一对偏振旋转器，以及与两个偏振旋转器的输出端相关联的偏振光束组合器， 以及通过将主要TE和TM模式与一阶分离器和旋转误差分量分离来净化包括TE和TM模式的光信号的方法。

公开(公告)号：US20100067843A1

公开(公告)日：2010-03-18

申请号：US12210487

申请日：2008-09-15

申请人： Brent E. Little

发明人： Brent E. Little

IPC分类号： G02F1/295

CPC分类号： G02F1/225 ,  G02B6/12007 ,  G02B6/2935 ,  G02B6/29395 ,  G02F1/0147 ,  G02F1/3132 ,  G02F2203/055 ,  G02F2203/15

摘要： Consistent with the present disclosure an optical filter is provided that preferably includes a plurality of looped or ring-shaped waveguides provided on a substrate which are coupled to one another by tunable couplers. Portions of each waveguide constitute part of each tunable coupler, which may include, for example, a Mach-Zehnder interferometer. A heater may be thermally coupled to one or both arms of the Mach-Zehnder interferometer, to thereby adjust an amount of optical coupling between adjacent looped waveguides. The filter bandwidth (i.e., the spectral width of the passband), which, as noted above, is related to such coupling, can thus also be tuned or varied. Additional heaters may be provided to tune the center wavelength of the passband so that a filter having both a variable passband spectral width and center wavelength can be obtained.

摘要翻译： 根据本公开，提供了一种滤光器，其优选地包括设置在衬底上的多个环形或环形波导，其通过可调耦合器彼此耦合。 每个波导的部分构成每个可调谐耦合器的一部分，其可以包括例如马赫 - 曾德干涉仪。 加热器可以热耦合到马赫 - 策德尔干涉仪的一个或两个臂，从而调整相邻环形波导之间的光耦合量。 因此，如上所述，与这种耦合有关的滤波器带宽（即，通带的频谱宽度）也可以被调谐或变化。 可以提供附加的加热器来调节通带的中心波长，使得可以获得具有可变通带光谱宽度和中心波长的滤光器。

公开(公告)号：US07565041B2

公开(公告)日：2009-07-21

申请号：US11925221

申请日：2007-10-26

申请人： Brent E. Little ,  Wei Chen

发明人： Brent E. Little ,  Wei Chen

IPC分类号： G02B6/26

CPC分类号： G02B6/12007 ,  G02B6/12011 ,  G02B6/12023 ,  G02B6/125 ,  G02B6/126 ,  G02B2006/12159

摘要： The present invention is directed to an on-chip symmetric optical circuit having one or more integrally fabricated polarization rotators forming a monolithic, solid state polarization independent symmetric circuit. The symmetric optical circuit has at least one integrally fabricated rotator positioned in a plane of symmetry of at least one optical fiber, waveguide or circuit path of the symmetric optical circuit. The folded symmetric optical circuit may be for example a Mach-Zehnder type optical circuit or an arrayed waveguide grating optical circuit.

摘要翻译： 本发明涉及一种具有一个或多个整体制造的偏振旋转器的片上对称光电路，其形成单片式，固态偏振无关对称电路。 对称光电路具有至少一个整体制造的旋转体，其位于对称光电路的至少一个光纤，波导或电路路径的对称平面中。 折叠对称光电路可以是例如马赫 - 曾德尔型光电路或阵列波导光栅光路。

公开(公告)号：US07546007B2

公开(公告)日：2009-06-09

申请号：US11757297

申请日：2007-06-01

申请人： Brent E. Little

发明人： Brent E. Little

IPC分类号： G02B6/26

CPC分类号： G02B6/122 ,  G02B6/12002 ,  G02B6/1228 ,  G02B2006/12147 ,  G02B2006/12173 ,  G02B2006/12176

摘要： A broadband optical via provides a low loss interconnection between waveguides in two vertically adjacent planar waveguiding layers. Two waveguides, one in each planar layer, evanescently interact over an interaction length, and substantially all of the power on one waveguide is transferred to the second waveguide. The relative detuning between waveguides is varied along the interaction region by tapering the width of one or both guides along the direction of propagation. The interaction strength is also varied by varying the physical separation between the two waveguides such that the interaction approaches zero near the two ends of the interaction length. The performance of the broadband optical via is fabrication tolerant, polarization tolerant, wavelength tolerant, and dimensionally tolerant.

摘要翻译： 宽带光通孔在两个垂直相邻的平面波导层中的波导之间提供低损耗互连。 每个平面层中的两个波导在相互作用长度上消逝，并且一个波导上的基本上所有的功率被传送到第二波导。 波导之间的相对失谐沿着相互作用区域沿着传播方向使一个或两个引导件的宽度逐渐变细。 相互作用强度也可以通过改变两个波导之间的物理间隔而变化，使得相互作用长度的两端附近的相互作用接近零。 宽带光通道的性能是制造容限，极化容限，波长容限和尺寸容差。