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11. 发明授权

US07044648B1 Method and apparatus for a fiber optic housing and aligning device 有权
标题翻译：用于光纤外壳和对准装置的方法和装置
公开(公告)号：US07044648B1
公开(公告)日：2006-05-16
申请号：US10642050
申请日：2003-08-15
申请人： Giovanni Barbarossa , Xingzhong Zhao , William Z. Guan , Ming Li , Di Yang , Xiaojun Wang
发明人： Giovanni Barbarossa , Xingzhong Zhao , William Z. Guan , Ming Li , Di Yang , Xiaojun Wang
IPC分类号： G02B6/32 , G02B6/36
CPC分类号： G02B6/4225 , G02B6/4204 , G02B6/4237 , G02B6/4238 , G02B6/4239
摘要： The present invention discloses an apparatus and method for a fiber optic housing and aligning device. A fiber optic housing and aligning device in accordance with the present invention comprises a housing, a directionally adjustable tubular casing that is mechanically coupled to a wall of the housing, and a collimator disposed within the directionally adjustable tubular casing, wherein the adjustable tubular casing comprises a convex spherical cap surface that mates with a concave seating surface of an opening within the wall and wherein the spherical cap surface may be attached to the housing by laser welding or by epoxy.
摘要翻译：本发明公开了一种用于光纤外壳和对准装置的装置和方法。根据本发明的光纤外壳和对准装置包括壳体，机械地联接到壳体的壁上的可定向调节的管状壳体和设置在可定向调节的管状壳体内的准直器，其中可调节管状壳体包括凸形的球形表面，其与壁内的开口的凹入座表面配合，并且其中球形盖表面可以通过激光焊接或通过环氧树脂附接到壳体。

12. 发明授权

US08063409B2 Systems, devices and methods of broadband light sources with tunable spectrum 有权
标题翻译：具有可调光谱的宽带光源的系统，设备和方法
公开(公告)号：US08063409B2
公开(公告)日：2011-11-22
申请号：US12354550
申请日：2009-01-15
申请人： Song Peng , Ming Li
发明人： Song Peng , Ming Li
IPC分类号： H01L33/00 , H01L27/14
CPC分类号： G02B27/14 , G02B27/1006 , G02B27/1086 , G02B27/141 , G02B27/145
摘要： Broadband light source systems, devices, and methods with a tunable spectrum are described by multiplexing a plurality of light sources, such as LEDs, with thin-film filters or diffraction gratings. A plurality of light sources with different or same wavelengths are multiplexed together to construct a combined broadband light source. A diffraction grating diffracts light beams from the plurality of light sources to a slit-shaped aperture, depending on selected light sources, the relative positions of the light sources to the slit-shaped aperture, and the type of grating to produce a tunable spectrum.
摘要翻译：具有可调频谱的宽带光源系统，装置和方法通过利用薄膜滤波器或衍射光栅复用诸如LED的多个光源来描述。具有不同或相同波长的多个光源被多路复用在一起以构成组合的宽带光源。衍射光栅根据所选择的光源将光束从多个光源衍射到狭缝形孔，光源与狭缝形孔的相对位置以及产生可调光谱的光栅类型。

13. 发明授权

US07298540B2 Equalizing optical wavelength routers 有权
标题翻译：均衡光波长路由器
公开(公告)号：US07298540B2
公开(公告)日：2007-11-20
申请号：US10225936
申请日：2002-08-22
申请人： Song Peng , Ming Li
发明人： Song Peng , Ming Li
IPC分类号： G02F1/01 , G02B5/30 , G02B5/18 , H04J14/02 , H04J14/06
CPC分类号： G02B6/29314 , G02B6/2931 , G02B6/2938
摘要： A dynamic equalizing optical channel router includes an input port for receiving a wavelength division multiplexed composite optical signal comprising a plurality of channels; at least one output port; a diffraction grating optically coupled to the input and output ports; a lens optically coupled to the diffraction grating at a side opposite to the input and output ports; an array of steering devices optically coupled to the lens at a side opposite to the diffraction grating, wherein each channel is reflected by a different steering device of the array; and a plurality of attenuators, wherein each channel reflected by the array traverses one of the attenuators and the diffraction grating to the at least one output port. The router is able to dynamically adjust optical intensity of each wavelength channel by a different amount while also performing the function of wavelength routing.
摘要翻译：动态均衡光信道路由器包括用于接收包括多个信道的波分复用复合光信号的输入端口; 至少一个输出端口; 光学耦合到输入和输出端口的衍射光栅; 在与输入和输出端口相对的一侧光耦合到衍射光栅的透镜; 在与衍射光栅相对的一侧光学地耦合到透镜的转向装置阵列，其中每个通道被阵列的不同转向装置反射; 以及多个衰减器，其中由阵列反射的每个通道将衰减器中的一个和衍射光栅穿过至少一个输出端口。路由器能够动态地调整每个波长信道的光强度，同时也执行波长路由功能。

14. 发明授权

US06594082B1 Optical wavelength router using reflective surfaces to direct output signals 有权
标题翻译：光波长路由器使用反射面直接输出信号
公开(公告)号：US06594082B1
公开(公告)日：2003-07-15
申请号：US09794590
申请日：2001-02-26
申请人： Ming Li , Song Peng
发明人： Ming Li , Song Peng
IPC分类号： G02B2600
CPC分类号： G02B6/272 , G02B6/2766 , G02B6/278 , G02B6/2931 , G02B6/29313 , G02B6/29395 , G02B6/3512 , H04Q11/0005 , H04Q2011/0024 , H04Q2011/003
摘要： An optical wavelength router utilizes a dispersive medium (e.g., a diffraction grating) and reflective surfaces. The dispersive medium separates an input optical signal (light beam) into a plurality of components, for example by wavelengths. The reflective surfaces convert the components into separate output beams traveling in the desired directions. The number and the direction of the output beams can be controlled by manipulating the angle of incidence at which the components strike the reflective surfaces. A micro-mirror array modulator serves as the reflective surfaces. Each mirror in the micro-mirror array modulator is positioned to direct individual components into a number of output signals. Alternatively, a polarization steering device which includes a polarization modulator and at least one birefringent element in addition to reflective surfaces is utilized. A Wollaston prism with a reflective surface may also be used.
摘要翻译：光波长路由器使用分散介质（例如，衍射光栅）和反射表面。分散介质例如通过波长将输入光信号（光束）分离成多个分量。反射表面将组件转换成沿所需方向行进的分离的输出光束。输出光束的数量和方向可以通过操纵部件撞击反射表面的入射角来控制。微镜阵列调制器用作反射表面。微镜阵列调制器中的每个反射镜被定位成将各个部件引导到多个输出信号中。或者，利用了包括偏振调制器和除了反射表面之外的至少一个双折射元件的偏振转向装置。还可以使用具有反射表面的沃拉斯顿棱镜。

15. 发明授权

US07245328B2 Apparatus and method for controlling extinction ratio in a liquid crystal polarization controller optical switch 失效
标题翻译：用于控制液晶偏振控制器光开关中消光比的装置和方法
公开(公告)号：US07245328B2
公开(公告)日：2007-07-17
申请号：US10173290
申请日：2002-06-17
申请人： Haijun Yuan , Ming Li , Song Peng
发明人： Haijun Yuan , Ming Li , Song Peng
IPC分类号： G02F1/133
CPC分类号： G02F1/0136 , G02F1/133382 , G02F1/31
摘要： A polarization controller includes: a liquid crystal cell; a mechanism for determining a compensation voltage; and a voltage driving circuit for applying the compensation voltage to the liquid crystal cell, where the application of the compensation voltage optimizes an extinction ratio of the liquid crystal cell. The controller controls the extinction ratio using an applied voltage to compensate for temperature changes, liquid crystal cell gap variations, and other errors of the liquid crystal cell. This controller is aimed at liquid crystal devices used in a wide ambient temperature range and is also useful to compensate for the fabrication errors of the liquid crystal switches.
摘要翻译：偏振控制器包括：液晶单元; 用于确定补偿电压的机构; 以及用于将补偿电压施加到液晶单元的电压驱动电路，其中施加补偿电压优化了液晶单元的消光比。控制器使用施加的电压来控制消光比，以补偿温度变化，液晶单元间隙变化和液晶单元的其它误差。该控制器针对在宽环境温度范围内使用的液晶装置，也可用于补偿液晶开关的制造误差。

16. 发明授权

US07073952B2 Stable mechanical devices for precision optical alignment and packaging 失效
公开(公告)号：US07073952B2
公开(公告)日：2006-07-11
申请号：US10163405
申请日：2002-06-05
申请人： Frank Xi Wu , Jian Xu , Ming Li , Song Peng
发明人： Frank Xi Wu , Jian Xu , Ming Li , Song Peng
IPC分类号： G02B6/26 , G02B7/00
CPC分类号： G02B6/32
摘要： An optical alignment device holds fiber collimators in place with extremely good mechanical and environmental stability. The device includes a ball with a hole traversing the ball, an upper clamping block with a first inner concave spherical surface and a lower clamping block with a second inner concave spherical surface. The hole includes a shape that can accommodate or contact an optical component whose alignment is to be controlled. The ball, together with the enclosed optical component is firmly held between the first and second inner concave surfaces of the clamping blocks, which are tightened against the ball with screws. When firmly clamped within the concave surfaces, the ball is prevented from accidental movement but can still rotate about any axis to align the optical component. Once alignment is achieved, the optical component and the ball are secured in place by epoxy, glue, solder or other suitable adhesive.

17. 发明授权

US06546159B1 Method and apparatus for compensating differential group delay 失效
标题翻译：用于补偿差分组延迟的方法和装置
公开(公告)号：US06546159B1
公开(公告)日：2003-04-08
申请号：US10225650
申请日：2002-08-22
申请人： Song Peng , Ming Li
发明人： Song Peng , Ming Li
IPC分类号： G02B600
CPC分类号： G02B6/2713 , G02B6/272 , G02B6/2766 , G02B6/278 , G02B6/2861
摘要： An improved digital differential group delay (DGD) controller is capable of producing variable DGD used to compensate for DGD in a fiber optic link in real time. The DGD controller comprises one or more sets of a polarization modulator optically coupled with a fixed delay component, such as a birefringent plate. Each set provides an amount of DGD compensation. By controlling the number of stages in the controller, the amount of DGD compensation provided by each stage, and which stages are placed in the ON state, the total amount of DGD compensation provided by the digital DGD controller can be varied.
摘要翻译：改进的数字差分组延迟（DGD）控制器能够产生用于实时补偿光纤链路中的DGD的可变DGD。 DGD控制器包括与固定延迟部件（例如双折射板）光学耦合的一组或多组偏振调制器。每组都提供一定量的DGD补偿。通过控制控制器中的级数，每级提供的DGD补偿量以及哪些级处于ON状态，可以改变数字DGD控制器提供的DGD补偿总量。

18. 发明授权

US07486443B1 High extinction ratio and low crosstalk compact optical switches 有权
标题翻译：高消光比和低串扰紧凑型光开关
公开(公告)号：US07486443B1
公开(公告)日：2009-02-03
申请号：US10224748
申请日：2002-08-20
申请人： Ming Li , Song Peng
发明人： Ming Li , Song Peng
IPC分类号： G02B5/30 , G02B27/28
CPC分类号： H04Q11/0005 , G02B6/272 , H04Q2011/0024 , H04Q2011/0026 , H04Q2011/0035
摘要： An improved optical switch utilizes one polarization modulator, with the beam components traversing it twice. Because of the twice traverse, the extinction ratio of the switch is doubled without the addition of another polarization modulator, thus avoiding the costs of additional optical components. With no additional components, the switch is more compact than conventional switches with the same extinction ratio. Fewer components also result in more thermal and long-term stability and less crosstalk.
摘要翻译：改进的光开关利用一个偏振调制器，光束分量穿过它两次。由于两次横移，所以开关的消光比加倍而不增加另一个偏振调制器，从而避免了额外的光学元件的成本。没有附加组件，开关比具有相同消光比的常规开关更紧凑。更少的组件也导致更多的热和长期稳定性和更少的串扰。

19. 发明授权

US06529307B1 Selective intensity modulation of channels in a multiplexed optical communication system 有权
标题翻译：复用光通信系统中信道的选择性强度调制
公开(公告)号：US06529307B1
公开(公告)日：2003-03-04
申请号：US09874474
申请日：2001-06-04
申请人： Song Peng , Ming Li
发明人： Song Peng , Ming Li
IPC分类号： G02F103
CPC分类号： H04B10/2569 , H04B10/532
摘要： A method and apparatus for achieving dynamic intensity modulation of the channels in a wavelength-division multiplexed optical communication system is presented. Wavelengths are spatially separated into a plurality of channels, the polarization states of which are individually modulated. The channels can be combined or filtered by polarization states to achieve the desired intensity in the output signal. An exemplary embodiment includes at least a polarization modulator, a birefringent wedge, a lens, and a dispersive element (e.g., diffraction grating) arranged in various order. Each segment of the polarization modulator can be made to rotate the polarization direction of an incident channel by a specified angle. A half-wave plate may be inserted between the second dispersive element and the second birefringent wedge to eliminate polarization-dependent loss. Optionally, a parallel birefringent plate may be inserted after the second birefringent wedge to reduce polarization mode dispersion.
摘要翻译：提出了一种用于实现波分复用光通信系统中的信道的动态强度调制的方法和装置。波长在空间上分成多个通道，其偏振状态被单独调制。可以通过极化状态组合或滤波通道，以在输出信号中达到所需的强度。示例性实施例至少包括以各种顺序布置的偏振调制器，双折射楔形，透镜和分散元件（例如，衍射光栅）。可以使偏振调制器的每个段使入射通道的偏振方向旋转指定的角度。可以在第二分散元件和第二双折射楔之间插入半波片，以消除偏振相关损耗。可选地，可以在第二双折射楔之后插入平行双折射板以降低偏振模色散。

20. 发明授权

US08014067B2 High extinction ratio and low crosstalk compact optical switches 失效
标题翻译：高消光比和低串扰紧凑型光开关
公开(公告)号：US08014067B2
公开(公告)日：2011-09-06
申请号：US12364252
申请日：2009-02-02
申请人： Ming Li , Song Peng
发明人： Ming Li , Song Peng
IPC分类号： G02B5/30 , G02B27/28
CPC分类号： H04Q11/0005 , G02B6/272 , H04Q2011/0024 , H04Q2011/0026 , H04Q2011/0035
摘要： An improved optical switch utilizes one polarization modulator, with the beam components traversing it twice. Because of the twice traverse, the extinction ratio of the switch is doubled without the addition of another polarization modulator, thus avoiding the costs of additional optical components. With no additional components, the switch is more compact than conventional switches with the same extinction ratio. Fewer components also result in more thermal and long-term stability and less crosstalk.
摘要翻译：改进的光开关利用一个偏振调制器，光束分量穿过它两次。由于两次横移，所以开关的消光比加倍而不增加另一个偏振调制器，从而避免了额外的光学元件的成本。没有附加组件，开关比具有相同消光比的常规开关更紧凑。更少的组件也导致更多的热和长期稳定性和更少的串扰。

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