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1. 发明授权

US5719976A Optimized waveguide structure 失效
标题翻译：优化波导结构
公开(公告)号：US5719976A
公开(公告)日：1998-02-17
申请号：US547767
申请日：1995-10-24
申请人： Charles Howard Henry , Edward John Laskowski , Yuan P. Li , Henry Howard Yaffe
发明人： Charles Howard Henry , Edward John Laskowski , Yuan P. Li , Henry Howard Yaffe
IPC分类号： G02B6/30 , G02B6/12 , G02B6/122 , G02B6/126 , G02B6/34 , G02B6/26
CPC分类号： G02B6/12009 , G02B6/12004 , G02B6/122 , G02B6/1228 , G02B2006/12119 , G02B2006/12169
摘要： An optimized waveguide structure enables the functional integration of various passive optic components on a single substrate. The optimized waveguide structure is characterized by a thicker core layer than used for square core waveguides and a core width that changes according to different functional regions of the optic circuit within which it is incorporated. The height (H) of the waveguide core is determined by the thickness of the core layer defined during the fabrication process and is ideally uniform across the circuit. The width (W) of the core, however, is changed between functional regions by the photo-lithographic mask and the chemical etching during the fabrication process. By way of example, an optimized waveguide structure for a P-doped silica planar waveguide with a .DELTA. approximately 0.6% for wavelength .lambda.=1.2-1.7 .mu.m, has a single uniform height of H=6.7 .mu.m and a width that changes between W=4 .mu.m in a coupler region, W=5.5 .mu.m in a bend region, W=9 .mu.m in a fiber coupling region, and W=10 .mu.m in a phase grating region of a Dragone router. Adiabatic tapers are used as transition regions between regions of different core widths.
摘要翻译：优化的波导结构使得能够在单个基板上的各种无源光学元件的功能集成。优化的波导结构的特征在于比用于方芯波导的核心层更厚，并且根据其所结合的光电路的不同功能区域而变化的芯宽度。波导芯的高度（H）由在制造过程中限定的芯层的厚度确定，并且在整个电路上理想地是均匀的。然而，通过光刻掩模和制造过程中的化学蚀刻在功能区域之间改变芯的宽度（W）。作为示例，用于波长λ=1.2-1.7μm的DELTA约0.6％的P掺杂二氧化硅平面波导的优化波导结构具有H =6.7μm的单一均匀高度，并且宽度在在耦合器区域中W =4μm，在弯曲区域中W =5.5μm，在光纤耦合区域中W =9μm，在Dragone路由器的相位光栅区域中W =10μm。绝热锥度用作不同芯宽的区域之间的过渡区域。

2. 发明授权

US5914889A Method and system for generating a mask layout of an optical integrated circuit 失效
标题翻译：用于产生光学集成电路的掩模布局的方法和系统
公开(公告)号：US5914889A
公开(公告)日：1999-06-22
申请号：US713582
申请日：1996-09-13
申请人： Leonard George Cohen , Charles Howard Henry , Yuan P. Li , Morton I. Schwartz , Yan Wang , Henry Howard Yaffe
发明人： Leonard George Cohen , Charles Howard Henry , Yuan P. Li , Morton I. Schwartz , Yan Wang , Henry Howard Yaffe
IPC分类号： G02B6/12 , G06F17/50 , G06F17/00
CPC分类号： G06F17/5068 , G02B6/12 , G02B2006/12173
摘要： A computer system and method provide a CAD tool by which a mask for an application specific optical integrated circuit, chip, or wafer may be generated both easily and quickly. The method involves the step of receiving the design for an optical circuit with the circuit design including at least one optical component. Each optical component in the optical circuit is defined by one or more geometric shapes, such as a trapezoid, rectangle, or an arcuate polygon. The method further includes the step of retrieving parameters which define the manufacturing standard by which the optical circuit will be fabricated as well as parameters which define the optical components in the optical circuit. Based on the parameters and the geometric shapes, a plot is generated which forms a mask layout for the optical circuit. The mask layout can then be viewed by a graphical editor whereby a designer can receive visual confirmation that the mask layout accurately portrays the desired optical circuit, chip, or wafer.
摘要翻译：计算机系统和方法提供了一种CAD工具，通过该工具可以容易且快速地生成用于特定于应用的光学集成电路，芯片或晶片的掩模。该方法包括接收具有包括至少一个光学部件的电路设计的光学电路的设计的步骤。光学电路中的每个光学部件由一个或多个几何形状限定，例如梯形，矩形或弓形多边形。该方法还包括检索定义要制造光电路的制造标准的参数以及限定光学电路中的光学部件的参数的步骤。基于参数和几何形状，生成形成光路的掩模布局的图。然后可以通过图形编辑器来观看掩模布局，由此设计者可以接收视觉确认掩模布局准确地描绘所需的光学电路，芯片或晶片。

3. 发明授权

US6137939A Method and apparatus for reducing temperature-related spectrum shifts in optical devices 失效
标题翻译：减少光学器件温度相关光谱偏移的方法和装置
公开(公告)号：US6137939A
公开(公告)日：2000-10-24
申请号：US941976
申请日：1997-10-01
申请人： Charles Howard Henry , Yuan P. Li
发明人： Charles Howard Henry , Yuan P. Li
IPC分类号： G02B6/13 , G02B6/10 , G02B6/12 , G02B6/34
CPC分类号： G02B6/12011 , G02B6/10 , G02B6/12028
摘要： The present invention teaches a novel technique for reducing the temperature-related spectrum shifts in optical devices, particularly waveguide grating routers (WGR). In general, the present invention modifies a portion of the length of at least one waveguide within an optical device in a manner that stabilizes the wavelength spectrum passing therethough even when exposed to temperature variations. More specifically, by knowing how the refractive index of a certain material changes with temperature variations as compared to that of common waveguide materials, such a silica, one may employ the teachings of the present invention to precisely modify the nature of the optical path through which a signal travels to fully compensate for any temperature-related wavelength spectrum shift. In other words, be able to produce an optical device with a plurality of waveguides each of which is appropriately modified so that any optical signal passing therethrough has the same wavelength at any two given temperatures.
摘要翻译：本发明教导了用于降低光学器件，特别是波导光栅路由器（WGR）中的温度相关光谱偏移的新技术。通常，本发明以使得即使暴露于温度变化也能稳定通过其的波长光谱的方式，在光学器件内修改至少一个波导的长度的一部分。更具体地说，通过了解某些材料的折射率如何随着温度变化而变化，与普通波导材料（例如二氧化硅）的折射率相比，可采用本发明的教导来精确地改变光路的性质，信号行进以完全补偿任何与温度有关的波长频谱偏移。换句话说，能够制造具有多个波导的光学器件，每个波导被适当地修改，使得通过其中的任何光信号在任何两个给定温度下具有相同的波长。

4. 发明授权

US6035080A Reconfigurable add-drop multiplexer for optical communications systems 失效
标题翻译：用于光通信系统的可重配置分插复用器
公开(公告)号：US6035080A
公开(公告)日：2000-03-07
申请号：US879929
申请日：1997-06-20
申请人： Charles Howard Henry , Gadi Lenz , Yuan P. Li , Christi Kay Madsen , Herman Melvin Presby , Ronald Edward Scotti
发明人： Charles Howard Henry , Gadi Lenz , Yuan P. Li , Christi Kay Madsen , Herman Melvin Presby , Ronald Edward Scotti
IPC分类号： G02B6/34 , H04J14/02 , H04Q11/00
CPC分类号： G02B6/12007 , H04J14/0206 , H04J14/0212 , H04Q11/0005 , G02B6/29319 , G02B6/29353 , G02B6/29355 , G02B6/29383 , G02B6/3508 , G02B6/3596 , H04J14/0204 , H04J14/0205 , H04Q2011/0022 , H04Q2011/0035
摘要： In accordance with the invention, an optical multiplexer includes at least one reconfigurable add-drop unit that can add-drop one channel out of a large set by switching the light path through one of a set of fixed add-drop filters. Reconfiguration is done by switching from the add-drop filter path to a bypass path, changing to a different add-drop filter and then switching back. The phase delay of the bypass path is adjusted to maintain nearly maximum transmission during switching. The selection among add-drop filters is done by sliding an integrated optic chip with the set of add-drop filters between input and output waveguides. The reconfigurable add-drop multiplexer unit is latchable, passive between reconfigurations, and has low intrinsic insertion loss. Plural units in series can add/drop plural channels.
摘要翻译：根据本发明，光复用器包括至少一个可重新配置的分插单元，其可以通过将一组通道中的一个固定分插滤波器切换成一个通道，从而将一个通道从大组中分出。重新配置是通过从分插过滤器路径切换到旁路路径，切换到不同的添加 - 删除过滤器，然后切换完成的。调整旁路路径的相位延迟，以保持切换期间接近最大的传输。通过在输入和输出波导之间使用一组加法滤波器滑动集成光学芯片来完成插入式滤波器之间的选择。可重新配置的分插复用器单元可重新配置之间是可锁定的，无源的，并具有低内在插入损耗。串联的多个单元可以添加/删除多个通道。

5. 发明授权

US07006729B2 Optical components having reduced insertion loss 失效
公开(公告)号：US07006729B2
公开(公告)日：2006-02-28
申请号：US10039245
申请日：2001-12-31
申请人： Yan Wang , Yuan P. Li
发明人： Yan Wang , Yuan P. Li
IPC分类号： G02B6/34 , G02B6/26
CPC分类号： G02B6/12011 , G02B6/10 , G02B6/125 , G02B2006/1215
摘要： An optical device is provided which includes a slab waveguide and at least one input waveguide coupled to a first side of the slab waveguide. The device also includes a plurality of output waveguides coupled to a second side of the slab waveguide. The slab waveguide has a segmented transition region that includes a plurality of waveguiding regions spaced apart from one other by at least one discrete sector.

6. 发明授权

US06301031B2 Method and apparatus for wavelength-channel tracking and alignment within an optical communications system 失效
标题翻译：用于光通信系统内的波长信道跟踪和对准的方法和装置
公开(公告)号：US06301031B2
公开(公告)日：2001-10-09
申请号：US08921911
申请日：1997-09-02
申请人： Yuan P. Li
发明人： Yuan P. Li
IPC分类号： H04J1402
CPC分类号： H04B10/572 , H01S5/0687 , H01S5/4025 , H04B10/506 , H04J14/02 , H04J14/0201 , H04J14/0221
摘要： The present invention teaches a novel technique for properly aligning the various channel positions of an optical signal splitter/combiner device, such as a DWDM, and associated optical transmitter(s), often a laser. In particular, the described technique establishes and utilizes feedback links between the operating temperature of the splitter/combiner and the operating temperature or operating current of the transmitter(s) to accurately manipulate the wavelengths of these devices in a manner that results in accurate alignment of the device wavelengths to the desired grid of channel positions, &lgr;0, &lgr;1, &lgr;2, &lgr;3, . . . , &lgr;n. Furthermore, by providing this active alignment or tracking scheme, the techniques of the present invention allows optical systems to more effectively operate at smaller channel spacings, i.e. ≦ about 50 GHz between adjacent channel positions, and with larger number of channels per device, i.e. ≧ about 32 channels.
摘要翻译：本发明教导了一种用于正确对准诸如DWDM的光信号分离器/组合器装置以及相关的光发射机（通常是激光器）的各种信道位置的新技术。特别地，所描述的技术建立并利用了分路器/组合器的工作温度与发射机的工作温度或工作电流之间的反馈链路，以便精确地操纵这些装置的波长，使得精确对准设备波长到期望的信道位置网格，lambd0，lambd1，lambd2，lambd3，...。。。，羔羊此外，通过提供这种主动对准或跟踪方案，本发明的技术允许光学系统在较小的信道间隔（即，相邻信道位置之间的约50GHz）和每个设备的更多数量的信道上更有效地操作，即 > =约32个频道。

7. 发明授权

US5629999A Side-gap mode tapering for integrated optic waveguides 失效
标题翻译：集成光波导的侧隙模式渐缩
公开(公告)号：US5629999A
公开(公告)日：1997-05-13
申请号：US401545
申请日：1995-03-10
申请人： Charles H. Henry , Edward J. Laskowski , Yuan P. Li , Weyl-kuo Wang
发明人： Charles H. Henry , Edward J. Laskowski , Yuan P. Li , Weyl-kuo Wang
IPC分类号： G02B6/10 , G02B6/12 , G02B6/122 , G02B6/30 , G02B6/26
CPC分类号： G02B6/30 , G02B6/10 , G02B6/122 , G02B6/1228 , G02B2006/12195
摘要： The present invention relates to a waveguide taper. The waveguide taper has a first end and a second end for being coupled with a fiber. The core has an overall width that progressively increases from the waveguide end toward the fiber end such that the width of the fiber end of the taper corresponds to the diameter of the core of the fiber. Side-gaps are disposed in the sides of the core and extend into the core but not across the entire width of the core. The depth of the side-gaps progressively increases from the waveguide end to the fiber end of the taper. In one embodiment, the side-gaps may be aperiodically and/or randomly disposed along the length of the taper and the side-gaps can be disposed at different angles to a direction of light propagation along a length of the core.
摘要翻译：本发明涉及一种波导锥度。波导锥体具有与光纤耦合的第一端和第二端。该芯的整体宽度从波导端向纤维端逐渐增加，使得锥形的纤维端的宽度对应于纤维芯的直径。侧面间隙设置在芯的侧面并延伸到芯中，但不跨越芯的整个宽度。侧隙的深度从锥形的波导端到光纤端逐渐增加。在一个实施例中，侧间隙可以沿着锥形的长度非周期性地和/或随机地设置，并且侧向间隙可以沿着沿芯的长度的光传播的方向以不同的角度设置。

8. 发明授权

US06539149B1 Waveguide grating router employing transmissive Echelle gratings 有权
标题翻译：采用透射式Echelle光栅的波导光栅路由器
公开(公告)号：US06539149B1
公开(公告)日：2003-03-25
申请号：US09399575
申请日：1999-09-20
申请人： Giovanni Barbarossa , Leonard George Cohen , Yuan P. Li , Yan Wang
发明人： Giovanni Barbarossa , Leonard George Cohen , Yuan P. Li , Yan Wang
IPC分类号： G02B634
CPC分类号： G02B6/12014 , G02B6/12007 , G02B2006/12107
摘要： In accordance with the invention, an optical router for an optical communications system comprises a pair of transmissive Echelle gratings having their grating surfaces coupled by a waveguide grating. The arrangement provides for substantial design freedom in that the dispersive parameters include the shapes of the first and second Echelle gratings as well as the path length difference among the waveguides. Moreover the device eliminates any need for reflective surfaces in the Echelle gratings.
摘要翻译：根据本发明，用于光通信系统的光路由器包括一对透射式Echelle光栅，其具有通过波导光栅耦合的光栅表面。该布置提供了实质的设计自由度，因为色散参数包括第一和第二Echelle光栅的形状以及波导之间的路径长度差。此外，该装置消除了在Echelle光栅中对反射表面的任何需要。

9. 发明授权

US5926298A Optical multiplexer/demultiplexer having a broadcast port 失效
标题翻译：具有广播端口的光复用器/解复用器
公开(公告)号：US5926298A
公开(公告)日：1999-07-20
申请号：US709240
申请日：1996-08-30
申请人： Yuan P. Li
发明人： Yuan P. Li
IPC分类号： G02B6/293 , G02B6/12 , G02B6/34 , H04B10/20
CPC分类号： G02B6/12016 , G02B6/12021
摘要： An optical multiplexer/demultiplexer 500 comprises first and second star couplers 41, 42 that are interconnected by a number of optical waveguides 430 of unequal length (i.e., a grating). The multiplexer/demultiplexer functions to distribute optical signals in a first-wavelength region .lambda..sub.A (around 1550 nm) from one input port 401 of the first star coupler 41 to individual output ports 426 of the second star coupler 42 according to wavelength. The first star coupler includes at least one other input port 402 for receiving optical signals in a second wavelength region .lambda..sub.B (around 1310 nm) to be broadcast to all output ports of the second star coupler. In order to properly broadcast the optical signals in the second wavelength region, a power splitter 50 is connected in series with the other input port(s) of the first star coupler. The combined width w.sub.1 of the output port(s) of the power splitter is greater than the width w.sub.2 subtended by the central Brillouin zone of the multiplexer/demultiplexer. In one embodiment of the invention, the power splitter comprises a star coupler 50-1 having one input port 51 and many output ports; while in another embodiment, the power splitter comprises a tapered waveguide 50-2. A particularly useful device 100 is formed by adding a coarse WDM (80) to route optical input signals in the .lambda..sub.A wavelength region to the one input port of the first star coupler, and to route optical signals in the .lambda..sub.B wavelength region to the power splitter.
摘要翻译：光复用器/解复用器500包括由不同长度（即，光栅）的多个光波导430互连的第一和第二星形耦合器41,42。多路复用器/解复用器用于将第一波长区域λA（约1550nm）中的光信号从第一星形耦合器41的一个输入端口401分配到第二星形耦合器42的各个输出端口426，根据波长。第一星形耦合器包括用于接收第二波长区域λB（大约1310nm）中的光信号的至少一个其它输入端口402，以广播到第二星形耦合器的所有输出端口。为了适当地广播第二波长区域中的光信号，功率分配器50与第一星形耦合器的另一个输入端口串联连接。功率分配器的输出端口的组合宽度w1大于多路复用器/解复用器的中心布里渊区域所对应的宽度w2。在本发明的一个实施例中，功率分配器包括具有一个输入端口51和许多输出端口的星形耦合器50-1; 而在另一个实施例中，功率分配器包括锥形波导50-2。特别有用的装置100通过将粗WDM（80）加到λA波长区域中的光输入信号到第一星形耦合器的一个输入端口并将λB波长区域中的光信号布置成功率分配器

10. 发明授权

US5502781A Integrated optical devices utilizing magnetostrictively, electrostrictively or photostrictively induced stress 失效
标题翻译：集成光学器件利用磁致伸缩，电致伸缩或光致伸缩诱发应力
公开(公告)号：US5502781A
公开(公告)日：1996-03-26
申请号：US378162
申请日：1995-01-25
申请人： Yuan P. Li , Raymond Wolfe
发明人： Yuan P. Li , Raymond Wolfe
IPC分类号： G01D5/353 , G01R33/032 , G02F1/01 , G02F1/313 , G02F1/295 , G01B9/02 , G02B6/26
CPC分类号： G02F1/0134 , G01D5/35329 , G01R33/0327 , G02F1/3132 , G02F1/3136
摘要： Integrated optical devices which utilize a magnetostrictively, electrostrictively or photostrictively induced stress to alter the optical properties of one or more waveguides in the device are disclosed. The integrated optical devices consist of at least one pair of optical waveguides preferably fabricated in a cladding material formed on a substrate. A stress applying material, which may be a magnetostrictive, electrostrictive or photostrictive material, is affixed to the upper surface of the cladding material near at least one of the optical waveguides. When the appropriate magnetic, electric or photonic field is applied to the stress applying material, a dimensional change tends to be induced in the stress applying material. The constrained state of the stress applying material, however, caused by its adhesion to the cladding material, causes regions of tensile and compressive stress, as well as any associated strains, to be created in the integrated optical device. By positioning one or more optical waveguides in a region of the device which will be subjected to a tensile or compressive stress, the optical properties of the stressed waveguide may be varied to achieve switching and modulation. Latchable integrated optical devices are achieved by utilizing a controlled induced stress to "tune" one or more waveguides in an integrated optical device to a desired refractive index or birefringence, which will be retained after the field is removed.
摘要翻译：公开了利用磁致伸缩，电致伸缩或光致诱导应力改变器件中一个或多个波导的光学特性的集成光学器件。集成的光学器件由至少一对光波导构成，优选以形成在衬底上的覆层材料制造。应力施加材料可以是磁致伸缩的，电致伸缩的或光致伸缩的材料，附着在至少一个光波导附近的包层材料的上表面。当将适当的磁，电或光子场施加到应力施加材料时，在应力施加材料中倾向于引起尺寸变化。然而，应力施加材料的约束状态由其与包层材料的粘附性引起，导致在集成光学装置中产生拉伸和压缩应力的区域以及任何相关的应变。通过将一个或多个光波导放置在将受到拉伸或压缩应力的装置的区域中，可以改变应力波导的光学特性以实现切换和调制。可锁定的集成光学器件通过利用受控诱导应力来将集成光学器件中的一个或多个波导“调谐”到期望的折射率或双折射来实现，其将在场被去除之后被保留。

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