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1. 发明授权

US06917760B2 Wide passband optical interleaver 失效
标题翻译：宽通带光交错器
公开(公告)号：US06917760B2
公开(公告)日：2005-07-12
申请号：US10039242
申请日：2001-12-31
申请人： Yuan P. Li , Yan Wang , Robert John Shine, Jr. , Kevin Sullivan
发明人： Yuan P. Li , Yan Wang , Robert John Shine, Jr. , Kevin Sullivan
IPC分类号： G02B6/34 , H04J14/02 , H04B10/00
CPC分类号： H04J14/02 , G02B6/29361 , G02B6/29386
摘要： A method and apparatus is provided for reformatting or interleaving a WDM signal that includes a plurality of optical channels having a first bandwidth and a first channel spacing. The method begins by receiving the WDM signal and dividing it into first and second subsets of optical channels each having a second channel spacing. Next, the first subset of optical channels are divided into third and fourth subsets of optical channels each having a third channel spacing. In addition, the second subset of optical channels is divided into fifth and sixth subsets of optical channels each having a fourth channel spacing. The third and fifth subsets of optical channels are combined to generate a first output WDM signal, while the fourth and sixth subsets of optical channels are combined to generate a second output WDM signal.
摘要翻译：提供了一种用于重新格式化或交织包括具有第一带宽和第一信道间隔的多个光信道的WDM信号的方法和装置。该方法通过接收WDM信号并将其划分为每个具有第二信道间隔的光信道的第一和第二子集开始。接下来，光信道的第一子集被分成具有第三信道间隔的光信道的第三和第四子集。另外，光信道的第二子集被分成具有第四信道间隔的光信道的第五和第六子集。光信道的第三和第五子集被组合以产生第一输出WDM信号，而光信道的第四和第六子集被组合以产生第二输出WDM信号。

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

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.

4. 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。

5. 发明授权

US06658181B2 Polarization interleaver 有权
公开(公告)号：US06658181B2
公开(公告)日：2003-12-02
申请号：US10038508
申请日：2002-01-02
申请人： Yan Wang , Yuan P. Li
发明人： Yan Wang , Yuan P. Li
IPC分类号： G02B612
CPC分类号： G02B6/29386 , G02B6/12019 , G02B6/12023 , G02B6/126 , G02B2006/12038 , G02B2006/121 , G02B2006/12109 , G02B2006/12164
摘要： A method and apparatus provides a WDM optical signal having a plurality of channels with a pair-wise orthogonal polarization state. The method begins by receiving a plurality of unpolarized optical wavelengths defining a plurality of optical channels separated by a prescribed channel spacing. A polarization wavelength dependent shift is imparted to the optical wavelengths, which is substantially equal to a particular fraction of the prescribed channel spacing.

6. 发明授权

US5745619A Low-loss optical power splitter for high-definition waveguides 失效
标题翻译：用于高分辨率波导的低损耗光功率分配器
公开(公告)号：US5745619A
公开(公告)日：1998-04-28
申请号：US660245
申请日：1996-06-07
申请人： Yuan P. Li , Yan Wang
发明人： Yuan P. Li , Yan Wang
IPC分类号： G02B6/126 , G02B6/12 , G02B6/122 , G02B6/125 , G02B6/26
CPC分类号： G02B6/125 , G02B2006/1215
摘要： This invention relates to a novel design for a low-loss optical power splitter, in particular Y-branch types resulting from chemical vapor deposition (CVD) fabricated silica waveguides. More specifically, the present invention utilizes mode matching of the fundamental modes between the input and the output waveguides of a splitter to optimize the splitters operational performance. The optical power splitter of the present invention comprising an input waveguide region having a predetermined width (W) and capable of transmitting optical energy having a fundamental mode E.sub.1.sup.0. Additionally, the splitter includes at least two output waveguide regions positioned to receive at least a portion the optical energy from the input waveguide region wherein the output waveguide regions each have predetermined widths (w) and are capable of transmitting optical energy having a fundamental mode E.sub.2.sup.0 ; and wherein each pair of output waveguide regions are separated by a gap of a predetermined width (d) therebetween. Lastly, the operational performance of the splitter is enhanced in accordance with the present invention as a result of purposely selecting certain physical properties of the splitter design such that the fundamental modes E.sub.1.sup.0 and E.sub.2.sup.0 are substantially equal at the beginning of the output waveguide regions. Mode matching of the fundamental modes between the single input and the dual output waveguides of a splitting Y junction was central to achieving the improved performance.
摘要翻译：本发明涉及一种用于低损耗光功率分配器的新颖设计，特别是由化学气相沉积（CVD）制造的二氧化硅波导产生的Y分支型。更具体地，本发明利用分离器的输入和输出波导之间的基本模式的模式匹配来优化分离器的操作性能。本发明的光功率分配器包括具有预定宽度（W）的输入波导区域并且能够发射具有基本模式E10的光能。另外，分离器包括至少两个输出波导区域，定位成从输入波导区域接收光能的至少一部分，其中输出波导区域各自具有预定宽度（w），并且能够传输具有基本模式E20的光能 ; 并且其中每对输出波导区域之间以预定宽度（d）的间隙分开。最后，根据本发明，通过有意地选择分离器设计的某些物理特性，使得基本模式E10和E20在输出波导区域的开始处基本相等，从而增强了分路器的操作性能。分离Y结的单输入和双输出波导之间的基本模式的模式匹配是实现改进性能的核心。

7. 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。

8. 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。

9. 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。

10. 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

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