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    Multi-wavelength cross-connect optical network
    32.
    发明授权
    Multi-wavelength cross-connect optical network 失效
    多波长交联光网络

    公开(公告)号：US6005697A

    公开(公告)日：1999-12-21

    申请号：US907551

    申请日：1997-08-08

    Applicant: Kuang-Yi Wu ,  Jian-Yu Liu

    Inventor： Kuang-Yi Wu ,  Jian-Yu Liu

    IPC: G02B6/34 ,  G02F1/31 ,  H04J14/02 ,  H04Q11/00 ,  H04Q11/04

    CPC classification number: G02B6/272 ,  G02B6/29302 ,  G02B6/29395 ,  G02F1/31 ,  H04Q11/0003 ,  H04Q11/0005 ,  H04J14/0212 ,  H04J14/0213 ,  H04Q2011/0016 ,  H04Q2011/0026 ,  H04Q2011/0032 ,  H04Q2011/0035

    Abstract: An optical cross-connect network provides wavelength routing of optical channels between two arrays of optical fibers carrying WDM signals using interconnected arrays of optical wavelength switches based on combinations of a 1.times.2 wavelength switch architecture. The cross-connect network can be made by interconnecting two arrays of 1.times.4 wavelength switches, each of which is made by combining three 1.times.2 wavelength switches. Each 1.times.2 optical wavelength switch includes a polarization separation element that decomposes and spatially separates the input signal into two orthogonally-polarized beams, and a wavelength filter that decomposes into the beam pair into two pairs of orthogonally-polarized beams that carry a first spectral band at a first polarization and a second spectral band at an orthogonal polarization. A polarization-dependent routing element spatially separates these four beams into four orthogonally-polarized components. A polarization combining element recombines the beams carrying the first spectral band, and also recombines the beams carrying the second spectral band at the output ports based on the control state of the wavelength switch.

    Abstract translation: 光交叉网络使用基于1x2波长交换机结构的组合的光波长交换机的互连阵列，提供携带WDM信号的两个光纤阵列之间的光信道的波长路由。 交叉连接网络可以通过连接1x4波长交换机的两个阵列来进行，每个阵列通过组合三个1x2波长交换机而制成。 每个1x2光波长开关包括偏振分离元件，其将输入信号分解并空间分离成两个正交偏振光束，以及波长滤波器，其将波束对分解成两对正交偏振光束，该对正交偏振光束携带第一光谱带 在正交极化处的第一极化和第二光谱带。 偏振相关路由元件将这四个光束空间分离成四个正交极化分量。 偏振组合元件将携带第一光谱带的光束重新组合，并且还基于波长开关的控制状态，在输出端口处重新携带携带第二光谱带的光束。

    Switchable wavelength router
    34.
    发明授权
    Switchable wavelength router 失效
    可切换波长路由器

    公开(公告)号：US5912748A

    公开(公告)日：1999-06-15

    申请号：US982978

    申请日：1997-12-02

    Applicant: Kuang-Yi Wu ,  Jian-Yu Liu

    Inventor： Kuang-Yi Wu ,  Jian-Yu Liu

    IPC: G02B6/34 ,  G02F1/31 ,  H04J14/02 ,  H04Q11/00 ,  H04Q11/04 ,  H04J14/00 ,  H04B10/00

    CPC classification number: G02F1/31 ,  G02B6/272 ,  G02B6/29302 ,  G02B6/29362 ,  G02B6/29395 ,  H04Q11/0003 ,  H04Q11/0005 ,  G02B6/2766 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04Q2011/0026 ,  H04Q2011/0032 ,  H04Q2011/0035

    Abstract: A switchable wavelength router has a first polarization-dependent routing element (e.g., a birefringent element, polarized beamsplitter, or angled polarization separator) that decomposes and spatially separates an incoming WDM optical signal into two orthogonally-polarized beams. A first polarization rotator selectably rotates the polarization of one of the beams to match the polarization of other beam, based on an external control signal. A wavelength filter (e.g., stacked waveplates) provides a polarization-dependent optical transmission function such that the first beam decomposes into third and fourth orthogonal beams, and the second beam decomposes into fifth and sixth orthogonal beams. The third and fifth beams carry a first spectral band at a first polarization and the fourth and sixth beams carry a second spectral band at an orthogonal polarization. A second polarization-dependent routing element spatially separates these four beams into four horizontally polarized and vertically polarized components. A second polarization rotator rotates the polarizations of the beams so that the third and fifth beams, and the fourth and sixth beams are orthogonally polarized. A third polarization-dependent routing element recombines the third and fifth beams (i.e., the first spectral band), and also recombines the fourth and sixth beams (i.e., the second spectral band) which are coupled to the two output ports based on the control state of the wavelength router.

    Abstract translation: 可切换波长路由器具有将入射WDM光信号分解并空间分离成两个正交偏振光束的第一偏振相关路由元件（例如，双折射元件，偏振分束器或倾斜偏振分离器）。 基于外部控制信号，第一偏振旋转器可选地使一个光束的偏振旋转以匹配其他光束的偏振。 波长滤波器（例如，堆叠波片）提供偏振相关的光传输功能，使得第一波束分解成第三和第四正交波束，第二波束分解成第五和第六正交波束。 第三和第五波束在第一极化处携带第一光谱带，第四和第六波束在正交极化处携带第二光谱带。 第二偏振相关路由元件将这四个光束空间分离成四个水平极化和垂直极化分量。 第二偏振旋转器使光束的偏振旋转，使得第三和第五光束以及第四和第六光束被正交极化。 第三偏振相关路由元件将第三和第五波束（即，第一频谱带）重新组合，并且还基于控制来重组耦合到两个输出端口的第四和第六波束（即，第二频谱带） 波长路由器的状态。

    Switchable wavelength router
    35.
    发明授权
    Switchable wavelength router 失效
    可切换波长路由器

    公开(公告)号：US5694233A

    公开(公告)日：1997-12-02

    申请号：US780291

    申请日：1997-01-08

    Applicant: Kuang-Yi Wu ,  Jian-Yu Liu

    Inventor： Kuang-Yi Wu ,  Jian-Yu Liu

    IPC: G02F1/31 ,  G02B6/34 ,  H04B10/02 ,  H04J14/00 ,  H04J14/02 ,  H04Q3/52 ,  H04Q11/00 ,  H04B10/00

    CPC classification number: G02B6/272 ,  G02B6/29302 ,  G02B6/29362 ,  G02B6/29395 ,  G02F1/31 ,  H04Q11/0003 ,  H04Q11/0005 ,  G02B6/2766 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0213 ,  H04Q2011/0026 ,  H04Q2011/0032 ,  H04Q2011/0035

    Abstract: A switchable wavelength router has a first birefringent element that decomposes and spatially separates an incoming WDM optical signal into two orthogonally-polarized beams. A first polarization rotator selectably rotates the polarization of one of the beams to match the polarization of other beam, based on an external control signal. A wavelength filter (e.g., stacked waveplates) provides a polarization-dependent optical transmission function such that the first beam decomposes into third and fourth orthogonal beams, and the second beam decomposes into fifth and sixth orthogonal beams. The third and fifth beams carry a first spectral band at a first polarization and the fourth and sixth beams carry a second spectral band at an orthogonal polarization. A second birefringent element spatially separates these four beams into four horizontally polarized and vertically polarized components. A second polarization rotator rotates the polarizations of the beams so that the third and fifth beams, and the fourth and sixth beams are orthogonally polarized. A third birefringent element recombines the third and fifth beams (i.e., the first spectral band), and also recombines the fourth and sixth beams (i.e., the second spectral band) which are coupled to the two output ports based on the control state of the wavelength router.

    Abstract translation: 可切换波长路由器具有第一双折射元件，其将入射的WDM光信号分解并空间分离成两个正交偏振光束。 基于外部控制信号，第一偏振旋转器可选地使一个光束的偏振旋转以匹配其他光束的偏振。 波长滤波器（例如，堆叠波片）提供偏振相关的光传输功能，使得第一波束分解成第三和第四正交波束，第二波束分解成第五和第六正交波束。 第三和第五波束在第一极化处携带第一光谱带，第四和第六波束在正交极化处携带第二光谱带。 第二个双折射元件将这四个光束空间分离成四个水平极化和垂直极化的分量。 第二偏振旋转器使光束的偏振旋转，使得第三和第五光束以及第四和第六光束被正交极化。 第三双折射元件将第三和第五光束（即，第一光谱带）重新组合，并且还基于耦合到两个输出端口的第四和第六光束（即，第二光谱带）重新组合基于 波长路由器。

    Test device and method
    36.
    发明授权
    Test device and method 有权
    测试装置和方法

    公开(公告)号：US06489783B1

    公开(公告)日：2002-12-03

    申请号：US09715227

    申请日：2000-11-17

    Applicant: Jian-Yu Liu ,  Ming-Yi Lay

    Inventor： Jian-Yu Liu ,  Ming-Yi Lay

    IPC: G01R2726

    CPC classification number: G01R31/129

    Abstract: A time dependent dielectric breakdown (TDDB) test device is used for testing a dielectric layer to obtain a time to failure (TTF) data, wherein the TDDB test device is electrically connected between a power source and a current detector and the dielectric layer includes at least a first capacitor and a second capacitor formed about selected first and second locations of the dielectric layer. The device includes a first current-limiting apparatus electrically connected to the first capacitor in series, a second current-limiting apparatus electrically connected to the second capacitor in series and the first current-limiting apparatus in parallel, and a voltage-regulating apparatus electrically connected to the second current-limiting apparatus in series. It also provides a method for implementing such device.

    Abstract translation: 使用时间依赖介质击穿（TDDB）测试装置来测试电介质层以获得故障时间（TTF）数据，其中TDDB测试装置电连接在电源和电流检测器之间，并且电介质层包括在 形成在介电层的所选择的第一和第二位置周围的至少一个第一电容器和第二电容器。 该装置包括串联电连接到第一电容器的第一限流装置，与第二电容器串联电连接的第二限流装置和并联的第一限流装置，以及电连接的电压调节装置 连接到第二限流装置。 它还提供了一种实现这种设备的方法。

    N×M digitally programmable optical routing switch
    37.
    发明授权
    N×M digitally programmable optical routing switch 失效
    NxM数字可编程光路由交换机

    公开(公告)号：US06452702B1

    公开(公告)日：2002-09-17

    申请号：US09546645

    申请日：2000-04-10

    Applicant: Kuang-Yi Wu ,  Jian-Yu Liu

    Inventor： Kuang-Yi Wu ,  Jian-Yu Liu

    IPC: H04J1406

    CPC classification number: G02B6/272 ,  G02B6/2766 ,  G02B6/2773 ,  G02F1/31 ,  H04Q11/0005 ,  H04Q2011/0024 ,  H04Q2011/0026 ,  H04Q2011/0035 ,  H04Q2011/0052

    Abstract: An optical routing switch provides polarization-independent and low-crosstalk switching between any of a plurality of input ports and any of a plurality of output ports over a wide operating range of temperatures and wavelengths. Optical signals appearing at each input port are spatially decomposed into two orthogonally-polarized beams by a first polarization-dependent routing element (e.g., a birefringent element or polarized beamsplitter). Beyond this point, a network of optical switches are placed along the optical paths of the pair of light beams. Each optical switch includes: (1) a polarization rotator that switchably controls the polarization of the input light beams so that both of the emergent beams are either vertically or horizontally polarized, according to the control state of the device; and (2) a polarization-dependent routing element that spatially routes the light beam pair to provide physical displacement based on their state of polarization. The final stage for each output port in the network consists of an array of polarization rotators that changes the polarization of at least one of the light beams, so that the two beams become orthogonally polarized. Finally, a polarization-dependent routing element (e.g., a birefringent element) intercepts the two orthogonally-polarized beams and recombines them to exit at the selected output port.

    Abstract translation: 光路由开关在多个输入端口中的任何一个和多个输出端口中的任何一个在宽的温度和波长的工作范围内提供偏振无关和低串扰切换。 出现在每个输入端口的光信号由第一偏振相关路由元件（例如，双折射元件或偏振分束器）在空间上分解为两个正交偏振光束。 除此之外，光开关网沿着该对光束的光路放置。 每个光开关包括：（1）根据装置的控制状态，可转换地控制输入光束的偏振，使两个出射光束垂直或水平偏振的偏振旋转器; 和（2）偏振相关的路由元件，其在空间上路由光束对以基于其极化状态提供物理位移。 网络中每个输出端口的最后一个阶段包括改变至少一个光束的偏振的偏振旋转器的阵列，使得两个光束成为正交极化。 最后，偏振相关的路由元件（例如，双折射元件）拦截两个正交偏振光束，并将其复合到所选择的输出端口处。

    Acute twist nematic (ATN) liquid crystal device for optical communication applications
    38.
    发明授权
    Acute twist nematic (ATN) liquid crystal device for optical communication applications 失效
    用于光通信应用的急转向向（ATN）液晶装置

    公开(公告)号：US06353467B1

    公开(公告)日：2002-03-05

    申请号：US09417600

    申请日：1999-10-14

    Applicant: Charles Wong ,  Yen-Chen Chen ,  Kuang-Yi Wu ,  Jian-Yu Liu

    Inventor： Charles Wong ,  Yen-Chen Chen ,  Kuang-Yi Wu ,  Jian-Yu Liu

    IPC: G09K1902

    CPC classification number: G02F1/31 ,  G02F1/1396 ,  G02F2001/1398

    Abstract: A twisted nematic liquid crystal-based electro-optic modulator with a twist angle between 0° and 90°, and preferably between 50° and 80° is provided. The modulator provides a relatively rapid switching time such as less than about 50 milliseconds, and provides relatively large extinction ratios, such as greater than −25 dB. Preferably the liquid crystal entrance director differs from the polarization direction by a beta angle of about 15°.

    Abstract translation: 提供了扭转角在0°和90°之间，优选在50°和80°之间的扭曲向列型液晶型电光调制器。 调制器提供相对较快的切换时间，例如小于约50毫秒，并提供相对较大的消光比，例如大于-25dB。 优选地，液晶入射指示器与偏振方向不同约为15°的β角

    Optical wavelength router
    39.
    发明授权
    Optical wavelength router 失效
    光波长路由器

    公开(公告)号：US06288807B1

    公开(公告)日：2001-09-11

    申请号：US09659524

    申请日：2000-09-12

    Applicant: Kuang-Yi Wu ,  Jian-Yu Liu

    Inventor： Kuang-Yi Wu ,  Jian-Yu Liu

    IPC: H04J1402

    CPC classification number: H04J14/0289 ,  G02B6/272 ,  G02B6/29302 ,  G02B6/29386 ,  G02B6/29395 ,  G02F1/31 ,  H04J14/0201 ,  H04J14/0209 ,  H04J14/0212 ,  H04J14/0291 ,  H04J14/06 ,  H04Q11/0003 ,  H04Q11/0005 ,  H04Q2011/0026 ,  H04Q2011/0032 ,  H04Q2011/0035

    Abstract: A programmable wavelength router having a plurality of cascaded stages where each stage receives one or more optical signals comprising a plurality of wavelength division multiplexed (WDM) channels. Each stage divides the received optical signals into divided optical signals comprising a subset of the channels and spatially positions the divided optical signals in response to a control signal applied to each stage. Preferably each stage divides a received WDM signal into two subsets that are either single channel or WDM signals. A final stage outputs optical signals at desired locations. In this manner, 2N optical signals in a WDM signal can be spatially separated and permuted using N control signals.

    Abstract translation: 一种具有多个级联级的可编程波长路由器，其中每个级接收包括多个波分复用（WDM）信道的一个或多个光信号。 每个级将接收到的光信号划分成包括信道子集的分割光信号，并且响应于施加到每个级的控制信号对分割的光信号进行空间位置。 每个级别优选地将接收的WDM信号划分为单个信道或WDM信号的两个子集。 最终阶段在期望的位置输出光信号。 以这种方式，WDM信号中的2N个光信号可以使用N个控制信号在空间上分离和置换。

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