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    Cholesteric liquid crystal cell devices and systems
    1.
    发明授权
    Cholesteric liquid crystal cell devices and systems 有权
    胆固醇液晶元件和系统

    公开(公告)号：US06834137B2

    公开(公告)日：2004-12-21

    申请号：US10005890

    申请日：2001-12-05

    申请人： Jing-Jong Pan ,  Hai-Ming Wu

    发明人： Jing-Jong Pan ,  Hai-Ming Wu

    IPC分类号： G02B642

    CPC分类号： G02B6/3582 ,  G02B6/3556

    摘要： Cholesteric liquid crystal cell units are used for reflecting or transmitting incident light responsive to control signals. A cholesteric liquid crystal cell unit has a first cholesteric liquid crystal cell and a second cholesteric liquid crystal cell. The second cholesteric liquid crystal cell respectively reflects or transmit lights from the first cholesteric liquid crystal cell responsive to a control signal when the first cholesteric liquid crystal cell reflects circularly polarized light of one state or transmits the incident light. In one embodiment of the cell unit, a &pgr;-phase waveplate element is located between the first and second cholesteric liquid crystal cells. With the cholesteric liquid crystal cell units, devices such as optical switches, and WDM add/drop multiplexers, and optical switch systems with arrays of input and output optical fibers between a switching matrix formed by the cholesteric liquid crystal cell units, may be constructed.

    摘要翻译： 胆固醇液晶单元用于响应于控制信号反射或透射入射光。 胆甾型液晶单元具有第一胆甾醇型液晶单元和第二胆甾型液晶单元。 当第一胆甾型液晶单元反射一种状态的圆偏振光或透射入射光时，第二胆甾醇型液晶单元响应于控制信号分别反射或透射来自第一胆甾醇型液晶单元的光。 在单元单元的一个实施例中，pi相位波片元件位于第一和第二胆甾型液晶单元之间。 利用胆甾型液晶单元，可以构成诸如光开关和WDM分插复用器的设备，以及在由胆甾型液晶单元单元形成的开关矩阵之间具有输入和输出光纤阵列的光开关系统。

    Cholesteric liquid crystal cell devices and systems
    2.
    发明授权
    Cholesteric liquid crystal cell devices and systems 失效

    公开(公告)号：US07035501B2

    公开(公告)日：2006-04-25

    申请号：US10809253

    申请日：2004-03-25

    申请人： Jing-Jong Pan ,  Hai-Ming Wu

    发明人： Jing-Jong Pan ,  Hai-Ming Wu

    IPC分类号： G02B6/42

    CPC分类号： G02B6/3582 ,  G02B6/3556

    摘要： Cholesteric liquid crystal cell units are used for reflecting or transmitting incident light responsive to control signals. A cholesteric liquid crystal cell unit has a first cholesteric liquid crystal cell and a second cholesteric liquid crystal cell. The second cholesteric liquid crystal cell respectively reflects or transmit lights from the first cholesteric liquid crystal cell responsive to a control signal when the first cholesteric liquid crystal cell reflects circularly polarized light of one state or transmits the incident light. In one embodiment of the cell unit, a π-phase waveplate element is located between the first and second cholesteric liquid crystal cells. With the cholesteric liquid crystal cell units, devices such as optical switches, and WDM add/drop multiplexers, and optical switch systems with arrays of input and output optical fibers between a switching matrix formed by the cholesteric liquid crystal cell units, may be constructed.

    Integrated variable optical attenuator and related components
    3.
    发明申请
    Integrated variable optical attenuator and related components 审中-公开
    集成可变光衰减器及相关元件

    公开(公告)号：US20050111073A1

    公开(公告)日：2005-05-26

    申请号：US10718030

    申请日：2003-11-20

    申请人： Jing-Jong Pan ,  Xiangong Qiu ,  Feng Zhou ,  Henry He ,  Changhong Jiang ,  Hai-Ming Wu

    发明人： Jing-Jong Pan ,  Xiangong Qiu ,  Feng Zhou ,  Henry He ,  Changhong Jiang ,  Hai-Ming Wu

    IPC分类号： G02B6/26 ,  G02B6/42 ,  G02F1/01 ,  G02F1/055 ,  G02F1/09 ,  G02F1/13 ,  H04B10/00

    CPC分类号： G02B6/2746 ,  G02B6/266 ,  G02B6/4206 ,  G02F1/0136 ,  G02F1/055 ,  G02F1/093 ,  G02F1/13 ,  G02F2203/48

    摘要： A polarization element and a polarization-sensitive optical isolator are integrated to form an integrated VOA. A preferred embodiment uses a liquid crystal cell as the polarization element to which is attached an optical isolator core of a first polarizer, Faraday rotator, and second polarizer. Voltage on the liquid crystal cell electrodes controls the amount of polarized light from the liquid crystal cell passing through the first polarizer and light in the opposite direction is blocked. The integrated VOA can be mounted within a laser device package so that the power of the source laser diode on the output fiber can be controlled and yet the laser diode is protected from light undesirably entering laser device package through the output fiber.

    摘要翻译： 集成了偏振元件和偏振敏感光隔离器，以形成集成的VOA。 优选实施例使用液晶单元作为安装有第一偏振器，法拉第旋转器和第二偏振器的光隔离器芯的偏振元件。 液晶单元电极上的电压控制来自通过第一偏振器的液晶单元的偏振光的量，并且阻止相反方向的光。 集成的VOA可以安装在激光器件封装中，使得可以控制输出光纤上的源极激光二极管的功率，并且保护激光二极管免受不期望地通过输出光纤进入激光器件封装的光。

    Temperature compensation for liquid crystal cell optical devices
    4.
    发明授权
    Temperature compensation for liquid crystal cell optical devices 有权
    液晶单元光学元件的温度补偿

    公开(公告)号：US06801183B2

    公开(公告)日：2004-10-05

    申请号：US10119538

    申请日：2002-04-10

    申请人： Jing-Jong Pan ,  Xiangdong Qiu ,  Hai-Ming Wu

    发明人： Jing-Jong Pan ,  Xiangdong Qiu ,  Hai-Ming Wu

    IPC分类号： G09G336

    CPC分类号： G02F1/13306 ,  G02B6/266 ,  G02F2203/48 ,  G02F2203/60

    摘要： A temperature compensation circuit arrangement for liquid crystal cells in optical devices is presented. In an optical device, a liquid crystal cell typically manipulates the optical signals according to an output optical property, such as attenuation, responsive to an AC voltage source electrical signal. A feedback circuit arrangement is connected to the liquid crystal cell and controls the current through the liquid crystal cell with respect to temperature by a predetermined control equations for the output optical property so that the device manipulates the optical signals independently of temperature. The current follows the control equations, which are empirically determined with respect to temperature for one equation.

    摘要翻译： 提出了一种用于光学器件中的液晶单元的温度补偿电路装置。 在光学装置中，液晶单元通常响应于AC电压源电信号而根据诸如衰减的输出光学特性来操纵光信号。 反馈电路装置连接到液晶单元并且通过预定的控制方程来控制液晶单元相对于温度的电流，以便输出光学特性，使得该装置独立于温度来操纵光信号。 电流遵循控制方程式，它们根据一个方程的温度经验确定。

    Temperature-compensated optical fiber package
    5.
    发明授权
    Temperature-compensated optical fiber package 失效
    温度补偿光纤封装

    公开(公告)号：US06181851B2

    公开(公告)日：2001-01-30

    申请号：US09071636

    申请日：1998-05-01

    申请人： Jing-Jong Pan ,  Jian Chen ,  Pan Ma

    发明人： Jing-Jong Pan ,  Jian Chen ,  Pan Ma

    IPC分类号： G02B624

    CPC分类号： G02B6/0218

    摘要： The invention provides a package which varies the tension within a fiber Bragg grating (or other fiber-based optical device) by resilient deflection of a fiber support member through differential thermal expansion, thereby allowing the temperature/tension characteristics of the package to be tailored so as to provide the desired optical characteristics throughout a wide temperature range. The fiber tension/temperature correlation may be tailored using the linear coefficient of expansion of two different materials, by varying the resilient flexibility of a beam supporting the fiber, by varying a length of an arm extending from the beam to the fiber, by varying the resilient strength of the arm, and the like. By relying on the resilient deformation of a flexible fiber support structure, the present invention provides a large number of degrees of freedom within the package design parameters. Where such precise control over the temperature/tension correlation is not required, the invention provides alternative compensation packages which can be mass-produced easily.

    摘要翻译： 本发明提供了一种通过差动热膨胀使纤维支撑构件的弹性偏转来改变光纤布拉格光栅（或其它基于光纤的光学装置）内的张力的封装，从而允许对包装的温度/拉伸特性进行定制 以便在宽的温度范围内提供期望的光学特性。 纤维张力/温度相关性可以通过使用两种不同材料的线膨胀系数进行调整，通过改变支撑纤维的梁的弹性柔性，通过改变从梁到纤维延伸的臂的长度， 臂的弹性强度等。 通过依靠柔性纤维支撑结构的弹性变形，本发明在包装设计参数内提供了大量的自由度。 在不需要对温度/张力相关性的精确控制的情况下，本发明提供了可以容易批量生产的替代性补偿包装。

    PDM-WDM for fiberoptic communication networks
    6.
    发明授权
    PDM-WDM for fiberoptic communication networks 失效
    用于光纤通信网络的PDM-WDM

    公开(公告)号：US6038357A

    公开(公告)日：2000-03-14

    申请号：US18207

    申请日：1998-02-03

    申请人： Jing-Jong Pan

    发明人： Jing-Jong Pan

    IPC分类号： H04J14/02 ,  H04J14/06 ,  G02B6/27

    CPC分类号： H04J14/028 ,  H04J14/02 ,  H04J14/0232 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/0282 ,  H04J14/0283 ,  H04J14/0227 ,  H04J14/06

    摘要： Polarization combiners and dividers are used in combination with WDM multiplexers and demultiplexers to create fiberoptic network systems with increased bandwidth and number of network users. Besides wavelength, the state of polarization of the optical signals creates different communication channels for the network system. The present invention is adaptable to many different fiberoptic network arrangements.

    摘要翻译： 极化组合器和分频器与WDM多路复用器和解复用器结合使用，以创建具有增加的带宽和网络用户数量的光纤网络系统。 除了波长，光信号的极化状态为网络系统产生不同的通信信道。 本发明适用于许多不同的光纤网络布置。

    1.times.N and N.times.N fiber optic couplers
    7.
    发明授权
    1.times.N and N.times.N fiber optic couplers 失效
    1xN和NxN光纤耦合器

    公开(公告)号：US5764830A

    公开(公告)日：1998-06-09

    申请号：US746604

    申请日：1996-11-13

    申请人： Jing-Jong Pan ,  Ming Shih ,  Weiti Wu ,  Yu-Li Ko ,  Donna S. Yu

    发明人： Jing-Jong Pan ,  Ming Shih ,  Weiti Wu ,  Yu-Li Ko ,  Donna S. Yu

    IPC分类号： G02B6/287 ,  G02B6/28 ,  G02B6/26 ,  G02B6/42

    CPC分类号： G02B6/2856 ,  G02B2006/2865 ,  G02B6/3636

    摘要： The present invention provides fiber optic couplers for use with at least three optic fibers. The optic fibers arranged in a linear array, that is, the optic fibers are coupled side by side. The fibers along either end of the linear-array are coupled only to a single fiber, while the remaining fibers are generally coupled between only two adjacent fibers. Generally, at least one of the fibers has a propagation constant different than the other fibers. Such variations in the propagation constant are used to vary the coupling coefficients among the fibers of the linear-array, thereby providing a repeatable mechanism, to vary coupled power ratios among the fibers of the coupler. Theoretical calculations and empirical experience have shown that varying the propagation constant of fibers among a linear-array, generally by pre-pulling the fibers by varying amounts, allows repeatable manufacturing of 1.times.3, 3.times.3, 1.times.4, 4.times.4, 1.times.N and even N.times.N fiber couplers having even coupled power ratios.

    摘要翻译： 本发明提供了用于至少三个光纤的光纤耦合器。 布置成线性阵列的光纤，即光纤并排耦合。 沿着线性阵列的任一端的纤维仅耦合到单个纤维，而剩余的纤维通常仅在两个相邻纤维之间耦合。 通常，纤维中的至少一种具有与其它纤维不同的传播常数。 传播常数的这种变化用于改变线阵列的光纤之间的耦合系数，从而提供可重复的机构，以改变耦合器的光纤之间的耦合功率比。 理论计算和经验经验表明，通常通过以不同的量预拉伸纤维来改变线性阵列中的纤维的传播常数，允许重复制造1x3,3x3,1x4,4x4,1xN和甚至NxN光纤耦合器，其具有 偶耦合功率比。

    Optical isolator array device
    10.
    发明授权
    Optical isolator array device 失效
    光隔离器阵列器件

    公开(公告)号：US5706371A

    公开(公告)日：1998-01-06

    申请号：US757699

    申请日：1996-12-03

    申请人： Jing-Jong Pan

    发明人： Jing-Jong Pan

    IPC分类号： G02B6/26 ,  G02B6/38

    CPC分类号： G02B6/2746

    摘要： An optical isolator array is presented. The array has a substrate with parallel grooves and a groove perpendicular to the parallel grooves to separate them. First sleeves each holding an end section of a first optical fiber and a first collimating element are fixed in the parallel grooves on one side of the perpendicular groove. Second sleeves each holding an end section of a second optical fiber and a second collimating element are fixed in the parallel grooves on the other side of the perpendicular groove. An optical isolator core subassembly having first and second strips of birefringent polarizer material, and a strip of Faraday rotator material between the first and second strips of birefringent polarizer materials is fixed in the perpendicular groove. Each optical isolator is formed by a first sleeve, first collimating lens, the optical isolator core subassembly, the second collimating lens and the second sleeve in a parallel groove between a first optical fiber and a second optical fiber having end sections held respectively in the first and second sleeves.

    摘要翻译： 介绍了光隔离器阵列。 该阵列具有一个具有平行凹槽的衬底和一个垂直于平行凹槽的沟槽，以分离它们。 保持第一光纤的端部的第一套筒和第一准直元件固定在垂直槽的一侧的平行槽中。 保持第二光纤的端部的第二套筒和第二准直元件固定在垂直槽的另一侧的平行槽中。 具有第一和第二双折射偏振器材料条的光隔离器芯子组件和在第一和第二双折射偏振器材料条之间的法拉第转子材料条被固定在垂直槽中。 每个光隔离器由第一套筒，第一准直透镜，光隔离器芯子组件，第二准直透镜和第二套筒组成在第一光纤和第二光纤之间的平行凹槽中，第一光纤和第二光纤具有分别保持在第一 和第二袖。