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    Stiffness effects in piezoelectric devices
    32.
    发明授权
    Stiffness effects in piezoelectric devices 有权
    压电器件的刚度效应

    公开(公告)号：US06230113B1

    公开(公告)日：2001-05-08

    申请号：US09212816

    申请日：1998-12-16

    申请人： Ji Wang ,  Yook-Kong Yong ,  Tsutomu Imai

    发明人： Ji Wang ,  Yook-Kong Yong ,  Tsutomu Imai

    IPC分类号： G06F1750

    CPC分类号： H01L41/22

    摘要： A method for verifying the design of piezoelectric devices includes expressing attributes of such piezoelectric device or subsystem thereof in terms of an elastic property or properties of a different subsystem or device component of the piezoelectric device. Such piezoelectric device may include a layer of piezoelectric material and one or more electrodes affixed to one or more faces of such layer. Computational complexity of models of the design are reduced by modeling displacement of the electrodes as being equal to displacement of the layer of piezoelectric material during operation of such piezoelectric device. Further reduction in computational complexity is achieved by modeling electrode displacement as being uniform within each electrode. Stress in the piezoelectric device or subsystem thereof is expressed in terms of elastic properties of a different subsystem of the piezoelectric device. Further any express dependence on strain in a subsystem or device component of the piezoelectric device may be eliminated to reduce model complexity. Higher order terms of such models can be ignored in many instances for further reduction in computational complexity.

    摘要翻译： 用于验证压电装置的设计的方法包括在压电装置的不同子系统或装置部件的弹性或弹性特性方面表示这种压电装置或其子系统的属性。 这种压电装置可以包括一层压电材料和一个或多个固定在该层的一个或多个面上的电极。 通过对电极的位移进行建模来减少设计模型的计算复杂度，使其等于在压电装置运行期间压电材料层的位移。 通过将电极位移建模为在每个电极内均匀，可以进一步降低计算复杂度。 压电装置或其子系统中的应力由压电装置的不同子系统的弹性特性表示。 此外，可以消除对压电器件的子系统或器件部件中的应变的任何明显的依赖性，以降低模型的复杂性。 在许多情况下，这种模型的高阶项可以被忽略，以进一步降低计算复杂度。

    Method of making an optical fiber
    35.
    发明授权
    Method of making an optical fiber 有权
    制造光纤的方法

    公开(公告)号：US07900481B2

    公开(公告)日：2011-03-08

    申请号：US11437382

    申请日：2006-05-19

    申请人： Michael Thomas Gallagher ,  Ming-Jun Li ,  Joseph Edward McCarthy ,  Ji Wang ,  Luis Alberto Zenteno

    发明人： Michael Thomas Gallagher ,  Ming-Jun Li ,  Joseph Edward McCarthy ,  Ji Wang ,  Luis Alberto Zenteno

    IPC分类号： C03B37/028

    CPC分类号： C03B37/01217 ,  C03B37/01211 ,  C03B2201/10 ,  C03B2201/14 ,  C03B2201/31 ,  C03B2201/34 ,  C03B2201/36 ,  C03B2203/12 ,  C03B2203/14 ,  C03B2203/31

    摘要： According to one embodiment a method of making optical fibers comprises: (i) manufacturing a core cane; (ii) situating a plurality of microstructures selected from rods, air filled tubes and glass filed tubes and placing said microstructures adjacent to the core cane, said microstructures forming no more than 3 layers; (iii) placing the core cane with said adjacent microstructures inside a holding clad tube; and (iv) placing interstitial cladding rods inside the holding (clad) tube, thereby forming an assembly comprising a tube containing a core cane, a plurality of microstructures and interstitial cladding rods. The assembly is then drawn into a microstructured cane and an optical fiber is drawn from the microstructured cane. According to several embodiments, the method of making an optical fiber includes providing at least one air hole and at least one stress rod adjacent to the core.

    摘要翻译： 根据一个实施例，制造光纤的方法包括：（i）制造芯棒; （ii）将选自杆，充气管和玻璃管的多个微结构放置在一起，并将所述微结构放置在与所述芯棒相邻的位置，所述微观结构不超过3层; （iii）将具有所述相邻微结构的芯棒放置在保持包层管内; 以及（iv）将间隙包层杆放置在保持（包覆）管内，由此形成包括含有芯棒，多个微结构和间隙包层棒的管的组件。 然后将组件拉入微结构的拐杖中，并且从微结构的拐杖中拉出光纤。 根据若干实施例，制造光纤的方法包括提供至少一个气孔和与芯相邻的至少一个应力棒。

    Bend insensitive optical fibers
    37.
    发明授权
    Bend insensitive optical fibers 有权
    弯曲不敏感光纤

    公开(公告)号：US07680381B1

    公开(公告)日：2010-03-16

    申请号：US12278000

    申请日：2008-11-25

    申请人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Ji Wang

    发明人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Ji Wang

    IPC分类号： G02B6/036

    CPC分类号： G02B6/03638 ,  G02B6/03633

    摘要： An optical fiber includes a core, an inner cladding and a low index ring of silica-based glass. The core comprises silica-based glass, an index of refraction n1, and a relative refractive index percent Δ1% relative to pure silica glass. The inner cladding surrounds the core and comprises an index of refraction n2 and a relative refractive index percent Δ2% relative to pure silica glass, wherein Δ1%>Δ2% and the difference between Δ1% and Δ2% is greater than about 0.1%. The low index ring surrounds the inner cladding and comprises silica glass co-doped with boron and fluorine, a radial thickness of less than about 20 μm, an index of refraction n3 and a third relative refractive index percent change Δ3% relative to pure silica glass, wherein Δ2%>Δ3% and Δ3% is less than about −1.0%.

    摘要翻译： 光纤包括芯，内包层和二氧化硅基玻璃的低折射率环。 核心包括二氧化硅基玻璃，折射率n1，相对折射率百分数＆Dgr;相对于纯石英玻璃为1％。 内部包层围绕芯部并且包括相对于纯石英玻璃的折射率n2和相对折射率百分比＆Dgr; 2％，其中＆Dgr; 1％>＆Dgr; 2％，并且Dgr; 1％和＆Dgr之间的差异; 2％大于约0.1％。 低折射率环围绕内包层并且包括与硼和氟共掺杂的二氧化硅玻璃，径向厚度小于约20μm，折射率n3和第三相对折射率百分比变化＆Dgr;相对于纯度3％ 石英玻璃，其中＆Dgr; 2％>＆Dgr; 3％和＆Dgr; 3％小于约-1.0％。

    High numerical aperture fiber
    38.
    发明授权
    High numerical aperture fiber 失效
    高数值孔径光纤

    公开(公告)号：US07526166B2

    公开(公告)日：2009-04-28

    申请号：US11701287

    申请日：2007-01-31

    申请人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Michael Thomas Murtagh ,  Daniel Aloysius Nolan ,  Pushkar Tandon ,  Ji Wang

    发明人： Dana Craig Bookbinder ,  Ming-Jun Li ,  Michael Thomas Murtagh ,  Daniel Aloysius Nolan ,  Pushkar Tandon ,  Ji Wang

    IPC分类号： G02B6/32

    CPC分类号： G02B6/02366 ,  G02B6/024 ,  G02B6/03633

    摘要： An optical fiber comprising: a silica based core having a first index of refraction n1; and at least one silica based cladding surrounding the core, the at least one silica based cladding comprising index lowering non-periodic voids containing a gas, wherein at least 80% of said voids have a maximum cross-sectional dimension of less than 2000 nm, and the NA of the fiber layer situated immediately adjacent to and inside said at least one silica based cladding is at least 0.2.

    摘要翻译： 一种光纤，包括：具有第一折射率n1的二氧化硅基核; 以及包围所述芯的至少一个二氧化硅基包层，所述至少一个二氧化硅基包层包含含有气体的折射率降低的非周期性空隙，其中至少80％的所述空隙具有小于2000nm的最大横截面尺寸， 并且位于所述至少一个基于二氧化硅的包层内和所述至少一个二氧化硅基包层内的所述纤维层的NA为至少0.2。