公开(公告)号：US08358398B2

公开(公告)日：2013-01-22

申请号：US12356038

申请日：2009-01-19

Applicant: Xuehua Wu ,  Haijun Yuan ,  Christopher Lin ,  Giovanni Barbarossa

Inventor： Xuehua Wu ,  Haijun Yuan ,  Christopher Lin ,  Giovanni Barbarossa

IPC: G02F1/13 ,  G02F1/1335 ,  G02B27/28

CPC classification number: G02B6/2713 ,  G02B6/2931 ,  G02F1/0136 ,  G02F1/1326 ,  G02F1/133 ,  G02F1/133528 ,  G02F1/31 ,  G02F2001/13355 ,  G02F2201/122 ,  G02F2201/307 ,  G02F2203/48

Abstract: An optical device is configured to perform both switching and attenuation of an optical beam in response to a single control signal. The optical device includes a liquid-crystal-based beam-polarizing element having polarization-conditioning regions that are controlled using a common electrode. The first polarization-conditioning region conditions the polarization of the input beam in order to separate the input beam into a primary component and a residual component. The second and third polarization-conditioning regions change the polarization of the primary component and the residual component, respectively. The primary component is directed to an output port after it has been attenuated based on its polarization state. The residual component, after passing through the third polarization-conditioning region, has its intensity further reduced based on its polarization state.

Abstract translation: 光学装置被配置为响应于单个控制信号执行光束的切换和衰减。 光学装置包括具有使用公共电极控制的偏振调节区域的基于液晶的光束偏振元件。 第一偏振调节区域调节输入光束的偏振，以便将输入光束分离成初级分量和残余分量。 第二和第三偏振调节区分别改变初级分量和残余分量的极化。 基于其极化状态衰减后，主要成分被引导到输出端口。 残留分量在通过第三偏振调节区域之后，其强度基于其极化状态进一步减小。

公开(公告)号：US20110129216A1

公开(公告)日：2011-06-02

申请号：US12283953

申请日：2008-09-17

Applicant: Christopher Lin

Inventor： Christopher Lin

IPC: H04B10/08 ,  G02B6/42

CPC classification number: H04J14/02 ,  H04J14/0221

Abstract: The specification describes tunable optical filters improved according to the invention by designing the optical system architecture to provide a double pass of the signal being analyzed through the tunable optical filter. The benefit of double passes through the tunable optical filter is narrower linewidth and better adjacent and non-adjacent channel isolation. The invention may be implemented with any tunable optical filter which is reciprocal. The optical system architecture is preferably an optical performance monitor for a WDM system.

Abstract translation: 本说明书描述了根据本发明改进的可调谐滤光器，通过设计光学系统架构以提供通过可调谐滤光器分析的信号的双重通过。 双通道可调滤光器的优点是线宽更窄，邻近和非相邻通道隔离更好。 本发明可以用互逆的任何可调光学滤波器来实现。 光学系统架构优选地是用于WDM系统的光学性能监视器。

公开(公告)号：US07949257B2

公开(公告)日：2011-05-24

申请号：US11938754

申请日：2007-11-12

Applicant: Christopher Lin ,  Mark Summa ,  Martin Williams ,  Douglas Butler ,  Peter Wigley

Inventor： Christopher Lin ,  Mark Summa ,  Martin Williams ,  Douglas Butler ,  Peter Wigley

IPC: H04B10/08 ,  H04B10/12 ,  H04B10/00 ,  H04J14/02

CPC classification number: H04B10/2513

Abstract: One embodiment sets forth a technique for measuring chromatic dispersion using reference signals within the operational range of amplifiers used to refresh data signals. One red/blue laser pair in the transmission node is used for measuring dispersion and chromatic dispersion compensation is added at each line node in the system. Since reference and data signals propagate through each amplifier, the reference signals used to measure chromatic dispersion receive the same dispersion compensation (and will have the same residual dispersion) as the data signals. Therefore, any residual dispersion in the data signals will manifest itself in downstream dispersion measurements and, thus, can be corrected. The tunable dispersion compensator in each line node may be set to compensate for the measured dispersion, thereby compensating for both the chromatic dispersion of the link connecting the current node to the prior node and any uncorrected residual dispersion from prior nodes.

Abstract translation: 一个实施例提出了使用用于刷新数据信号的放大器的操作范围内的参考信号来测量色散的技术。 传输节点中的一个红/蓝激光对用于测量色散，并且在系统中的每个线路节点处添加色散补偿。 由于参考和数据信号通过每个放大器传播，用于测量色散的参考信号将接收与数据信号相同的色散补偿（并将具有相同的残留色散）。 因此，数据信号中的任何残留色散将在下游色散测量中显现，因此可以被校正。 每个线路节点中的可调谐色散补偿器可以被设置为补偿测量的色散，由此补偿连接当前节点到先前节点的链路的色散和来自先前节点的任何未校正的残余色散。

公开(公告)号：US20090147212A1

公开(公告)日：2009-06-11

申请号：US12356038

申请日：2009-01-19

Applicant: Xuehua WU ,  Haijun Yuan ,  Christopher Lin ,  Giovanni Barbarossa

Inventor： Xuehua WU ,  Haijun Yuan ,  Christopher Lin ,  Giovanni Barbarossa

IPC: G02F1/1347

CPC classification number: G02B6/2713 ,  G02B6/2931 ,  G02F1/0136 ,  G02F1/1326 ,  G02F1/133 ,  G02F1/133528 ,  G02F1/31 ,  G02F2001/13355 ,  G02F2201/122 ,  G02F2201/307 ,  G02F2203/48

Abstract: An optical device is configured to perform both switching and attenuation of an optical beam in response to a single control signal. The optical device includes a liquid-crystal-based beam-polarizing element having polarization-conditioning regions that are controlled using a common electrode. The first polarization-conditioning region conditions the polarization of the input beam in order to separate the input beam into a primary component and a residual component. The second and third polarization-conditioning regions change the polarization of the primary component and the residual component, respectively. The primary component is directed to an output port after it has been attenuated based on its polarization state. The residual component, after passing through the third polarization-conditioning region, has its intensity further reduced based on its polarization state.

Abstract translation: 光学装置被配置为响应于单个控制信号执行光束的切换和衰减。 光学装置包括具有使用公共电极控制的偏振调节区域的基于液晶的光束偏振元件。 第一偏振调节区域调节输入光束的偏振，以便将输入光束分离成初级分量和残余分量。 第二和第三偏振调节区分别改变初级分量和残余分量的极化。 基于其极化状态衰减后，主要成分被引导到输出端口。 残留分量在通过第三偏振调节区域之后，其强度基于其极化状态进一步减小。

公开(公告)号：US06714705B1

公开(公告)日：2004-03-30

申请号：US10140610

申请日：2002-05-07

Applicant: Christopher Lin ,  Simon X. F. Cao ,  Giovanni Barbarossa ,  Charlene Yang

Inventor： Christopher Lin ,  Simon X. F. Cao ,  Giovanni Barbarossa ,  Charlene Yang

IPC: G02B634

CPC classification number: G02B6/29358 ,  G02B6/29311 ,  G02B6/29313 ,  G02B6/29314 ,  G02B6/29394 ,  G02B6/29395

Abstract: A tunable chromatic dispersion and dispersion slope compensator that utilizes a Virtually Imaged Phased Array (VIPA), a rotating transmissive diffraction grating, and a mirror with different curvatures for different cross-sections is disclosed. The compensator in accordance with the present invention provides simultaneous tunable compensation of chromatic dispersion and dispersion slope utilizing a single apparatus. The amount of compensation is accomplished by rotating the transmissive diffracting grating and/or translating the mirror. A system which utilizes the compensator is thus cost effective to manufacture.

Abstract translation: 公开了一种可调谐色散和色散斜率补偿器，其利用虚拟成像相位阵列（VIPA），旋转透射衍射光栅以及用于不同截面具有不同曲率的反射镜。 根据本发明的补偿器使用单个装置提供色散和色散斜率的同时可调谐补偿。 通过旋转透射衍射光栅和/或平移反射镜来实现补偿量。 因此，利用补偿器的系统是制造成本有效的。

公开(公告)号：US20130101254A1

公开(公告)日：2013-04-25

申请号：US13281178

申请日：2011-10-25

Applicant: Ming Cai ,  Christopher Lin

Inventor： Ming Cai ,  Christopher Lin

IPC: G02B6/42

CPC classification number: G02B6/29395 ,  G02B6/2821 ,  G02B6/29389

Abstract: An optical performance monitoring system includes a four-port tap coupling a tunable optical filter to a light detector. The four-port tap is configured as an optical tap and an optical splitter combined into a single optical element, where the optical tap directs a portion of an optical signal from an optical fiber to the tunable optical filter, and the optical splitter directs the optical signal from the tunable optical filter to the light detector. The optical performance monitoring system may employ tunable optical filters as a double-duty tunable filter or a double-pass tunable filter. As a double-duty tunable filter, optical signals to be monitored are passed through the tunable filter in opposite directions. As a double-pass tunable filter, a reflecting element is arranged on the output side of the tunable filter so that a filtered optical signal can be fed back into the tunable filter.

Abstract translation: 光学性能监测系统包括将可调谐滤光器耦合到光检测器的四端口抽头。 四端口抽头被配置为光学抽头和组合成单个光学元件的光分路器，其中光学分接头将光信号的一部分从光纤引导到可调谐滤光器，并且光分路器引导光学 信号从可调光滤波器到光检测器。 光学性能监测系统可以使用可调谐光学滤波器作为双重可调谐滤波器或双通道可调谐滤波器。 作为双重可调滤波器，要监视的光信号通过可调滤波器在相反的方向。 作为双通可调滤波器，反射元件布置在可调滤波器的输出侧，使得经滤波的光信号可以反馈到可调​​滤波器中。

公开(公告)号：US08346084B2

公开(公告)日：2013-01-01

申请号：US11945996

申请日：2007-11-27

Applicant: Haijun Yuan ,  Xuehua Wu ,  Christopher Lin ,  Giovanni Barbarossa

Inventor： Haijun Yuan ,  Xuehua Wu ,  Christopher Lin ,  Giovanni Barbarossa

IPC: H04J14/02

CPC classification number: G02B6/2938 ,  G02B6/2931 ,  G02B6/356

Abstract: An optical device for a wavelength division multiplexing system has a telecentric lens system and a signal-processing optical element, where the signal-processing optical element performs switching, attenuation, or other optical signal processing for the optical device. The telecentric lens system acts as a self-compensating optical system to minimize sensitivity of the optical device to unwanted displacement of an input image from the optical axis of the optical device. The optical device may include multiple telecentric lens systems, in which case the optical device is also less sensitive to precise alignment between the telecentric lens systems.

Abstract translation: 用于波分复用系统的光学装置具有远心透镜系统和信号处理光学元件，其中信号处理光学元件执行用于光学器件的切换，衰减或其它光信号处理。 远心透镜系统用作自补偿光学系统，以使光学装置的灵敏度最小化，使输入图像不受光学装置的光轴的偏移。 光学装置可以包括多个远心透镜系统，在这种情况下，光学装置对远心透镜系统之间的精确对准也不那么敏感。

公开(公告)号：US08203691B2

公开(公告)日：2012-06-19

申请号：US12014730

申请日：2008-01-15

Applicant: Haijun Yuan ,  Xuehua Wu ,  Christopher Lin ,  Giovanni Barbarossa

Inventor： Haijun Yuan ,  Xuehua Wu ,  Christopher Lin ,  Giovanni Barbarossa

IPC: G02F1/13 ,  G02B27/28

CPC classification number: G02F1/1313 ,  G02B5/3083 ,  G02B6/35 ,  G02B27/283 ,  G02F1/1326 ,  G02F1/133528 ,  G02F1/13363 ,  G02F1/31

Abstract: An optical switch for performing high extinction ratio switching of an optical signal includes a beam polarizing element and one or more optical elements. The optical elements are configured to direct an optical signal along a first or second optical path based on the polarization state of the optical signal as it passes through the optical elements. The optical switch performs high extinction ratio switching of the optical signal by preventing unwanted optical energy from entering an output port by using an absorptive or reflective optical element or by directing the unwanted optical energy along a different optical path.

Abstract translation: 用于执行光信号的高消光比切换的光开关包括光束偏振元件和一个或多个光学元件。 光学元件被配置为当光信号通过光学元件时，基于光信号的偏振状态沿着第一或第二光路引导光信号。 光开关通过使用吸收或反射光学元件防止不想要的光能进入输出端口或通过沿着不同的光路引导不想要的光能来执行光信号的高消光比切换。

公开(公告)号：US20080219619A1

公开(公告)日：2008-09-11

申请号：US12014728

申请日：2008-01-15

Applicant: Xuehua Wu ,  Haijun Yuan ,  Younsheng Liu ,  Christopher Lin ,  Giovanni Barbarossa

Inventor： Xuehua Wu ,  Haijun Yuan ,  Younsheng Liu ,  Christopher Lin ,  Giovanni Barbarossa

IPC: G02B6/32 ,  G02B6/35

CPC classification number: G02B6/32 ,  G02B6/12009

Abstract: A fiber lens assembly is configured to optically couple an optical fiber to a signal processing device having free-space optical elements. The fiber lens assembly includes a diverging lens having a focal length that may be around 2 to 6 times the diameter of the optical fiber core. Sensitivity of the fiber lens assembly to angular misalignment and positional displacement is reduced by coupling the optical fiber to the signal processing device using a diverging lens rather than a collimating lens, and by configuring the diverging lens with a suitable focal length.

Abstract translation: 光纤透镜组件被配置为光纤耦合到具有自由空间光学元件的信号处理装置。 光纤透镜组件包括具有可能为光纤芯直径的2至6倍的焦距的发散透镜。 通过使用发散透镜而不是准直透镜将光纤耦合到信号处理装置，并且通过配置具有合适焦距的发散透镜来减少光纤透镜组件对角度偏移和位置位移的灵敏度。

公开(公告)号：US06668115B2

公开(公告)日：2003-12-23

申请号：US09746708

申请日：2000-12-22

Applicant: Christopher Lin ,  Simon Cao

Inventor： Christopher Lin ,  Simon Cao

IPC: G02B634

CPC classification number: G02B6/29311 ,  G02B6/266 ,  G02B6/29394 ,  G02B6/32

Abstract: The present invention provides an improved gain slope equalizer which provides variable optical attenuation. The gain slope equalizer includes a transmission diffraction grating with a first side and a second side; a first lens optically coupled to the second side of the transmission diffraction grating; and at least one reflective surface optically coupled to the first lens at a side opposite to the transmission diffraction grating. The gain slope equalizer in accordance with the present invention can also be used with a Virtually Imaged Phased Array (VIPA) to provide a chromatic dispersion slope and chromatic dispersion compensation as well as variable optical attenuation. The present invention provides the heretofore unavailable capability of simultaneous tunable gain slope equalization and chromatic dispersion compensation utilizing a single apparatus.

Abstract translation: 本发明提供一种提供可变光衰减的改进的增益斜率均衡器。 增益斜率均衡器包括具有第一侧和第二侧的透射衍射光栅; 第一透镜，其光学耦合到透射衍射光栅的第二侧; 以及在与透射衍射光栅相对的一侧光学耦合到第一透镜的至少一个反射表面。 根据本发明的增益斜率均衡器还可以与虚拟成像相位阵列（VIPA）一起使用，以提供色散斜率和色散补偿以及可变的光衰减。 本发明提供了使用单个装置的同时可调增益斜率均衡和色散补偿的以前不可用的能力。