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    Optical sample and hold architecture
    1.
    发明公开
    Optical sample and hold architecture 有权
    光学采样和保持电路的结构

    公开(公告)号：EP0980147A3

    公开(公告)日：2003-11-19

    申请号：EP99114281.1

    申请日：1999-07-29

    Applicant: Northrop Grumman Corporation

    Inventor： Ferguson, Bruce A. ,  Fields, Richard A. ,  Kintis, Mark ,  Kunkee, Elizabeth T. ,  Lembo, Lawrence J. ,  Perkins, Stephen R. ,  Rollins, David L. ,  Upton, Eric L.

    IPC: H03M1/36 ,  G02F7/00 ,  H01S5/50 ,  H01S3/106 ,  G02F1/015 ,  G02B6/28 ,  G02B6/34

    CPC classification number: H03M1/368 ,  G02F7/00

    Abstract: The optical hold unit (100) of the present invention includes an optical modulator (108) that has an electrical input, an optical input, and an optical output. A 1xN optical splitter (106) is also provided that has an optical input and N optical outputs. In addition, N optical paths (112) are individually coupled to the N optical outputs and carry one of the N output signals. Each optical path has an associated propagation delay. Optical delay elements may be located in any of the N optical paths that carry the output signals. The optical delay elements serve to lengthen the propagation delay (114a-e) of the optical path (112a-e) in which the optical delay element is located. In an alternative embodiment, the optical hold unit (200) includes an optical modulator (108) that has an electrical input, an optical input, and an optical output. An optical resonator (202) is also provided and connected to the optical output of the modulator (108). The optical resonator (202) also includes a partially transmissive output (222) to which an optical path is connected. The optical resonator (202) may also include a gain medium (208) or an optical switch (210).

    Single-electrode push-pull configuration for semiconductor PIN modulators
    3.
    发明公开
    Single-electrode push-pull configuration for semiconductor PIN modulators 审中-公开
    Gegentakt-Einzel-ElektrodenkonfigurationfürPIN-Halbleitermodulatoren

    公开(公告)号：EP1473587A1

    公开(公告)日：2004-11-03

    申请号：EP03026666.2

    申请日：2003-11-19

    Applicant: Northrop Grumman Corporation

    Inventor： Scott, David C. ,  Vang, Timothy A. ,  Wang, Wenshen ,  Kunkee, Elizabeth T.

    IPC: G02F1/225

    CPC classification number: G02F1/2257 ,  G02F2001/212 ,  G02F2201/126

    Abstract: A single-electrode, push-pull semiconductor PIN Mach-Zehnder modulator (10) that includes first and second PIN devices (12, 14) on a substrate (16). Intrinsic layers (22, 28) of the devices (12, 14) are the active regions of two arms (50, 52) of a Mach-Zehnder interferometer. An outer electrode (38) is connected to the N layer (24) of the first PIN device (12) and a center electrode (40) is connected to the P layer (20) of the first PIN device (12). An outer electrode (42) is connected to the P layer (26) of the second PIN device (14) and the center electrode (40) is connected to the N layer (30) of the second PIN device (14). An RF modulation signal biases the PIN devices (12, 14) in opposite directions and causes the index refraction of the intrinsic layers (22, 28) to change in opposite directions to give a push-pull modulation effect.

    Abstract translation: 包括衬底（16）上的第一和第二PIN器件（12,14）的单电极推挽半导体引脚马赫 - 曾德调制器（10）。 装置（12,14）的本征层（22,28）是马赫 - 曾德干涉仪的两个臂（50,52）的有源区域。 外部电极（38）连接到第一PIN器件（12）的N层（24），并且中心电极（40）连接到第一PIN器件（12）的P层（20）。 外部电极（42）连接到第二PIN器件（14）的P层（26），中心电极（40）连接到第二PIN器件（14）的N层（30）。 RF调制信号在相反方向上偏置PIN器件（12,14），并使本征层（22,28）的折射折射沿相反方向改变，以产生推挽调制效果。

    Optical devices employing an optical thresholding device
    4.
    发明公开
    Optical devices employing an optical thresholding device 审中-公开
    用光学阈值器件的光学器件

    公开(公告)号：EP1102113A3

    公开(公告)日：2004-02-04

    申请号：EP00124398.9

    申请日：2000-11-21

    Applicant: Northrop Grumman Corporation

    Inventor： Fields, Richard A. ,  Ferguson, Bruce A. ,  Kintis, Mark ,  Kunkee, Elizabeth T. ,  Lembo, Lawrence J. ,  Perkins, Stephen R. ,  Rollins, David L. ,  Upton, Eric L.

    IPC: G02F1/35 ,  G02F3/00 ,  G06E3/00 ,  H01L31/105

    CPC classification number: G02F3/00 ,  G02F1/3515 ,  G02F1/3523

    Abstract: An optical device for use with an optical input beam comprises an optical thresholding device (OTD) having a predetermined threshold level, and is positioned along an optical path defined by the propagation direction of the optical input beam (12). A source (20) generates a control beam (22) through the OTD, wherein if the combined intensity of the optical input beam (12) and the control beam (22) is large enough to exceed the threshold level of the OTD, the optical beam passes through the OTD. The OTD attenuates the optical beam as it passes therethrough. In a preferred embodiment, the OTD is a saturable absorber. When the device is configured as an optical comparator, the intensity of the optical input beam (12) is large enough to exceed the threshold level of the OTD, the OTD saturates and turns transparent so that the control beam (22) passes through the OTD as an optical indicator beam and the optical input beam (12) passes through the OTD. When configured as an optical signal attenuator and the intensity of the optical input signal is negligible compared to that of the control beam, the combined intensity of the optical input signal and the control beam do not saturate the OTD.

    Optical sample and hold architecture
    8.
    发明公开
    Optical sample and hold architecture 审中-公开
    Architektur einer optischen Abtast- und Halteschaltung

    公开(公告)号：EP1696262A1

    公开(公告)日：2006-08-30

    申请号：EP06011375.0

    申请日：1999-07-29

    Applicant: NORTHROP GRUMMAN CORPORATION

    Inventor： Ferguson, Bruce A. ,  Fields, Richard A. ,  Kintis, Mark (NMI) ,  Kunkee, Elizabeth T. ,  Lembo, Lawrence J. ,  Perkins, Stephen R. ,  Rollins, David L. ,  Upton, Eric L.

    IPC: G02F7/00 ,  H03M1/36

    CPC classification number: H03M1/368 ,  G02F7/00

    Abstract: The optical hold unit (100) of the present invention includes an optical modulator (108) that has an electrical input, an optical input, and an optical output. A 1xN optical splitter (106) is also provided that has an optical input and N optical outputs. In addition, N optical paths (112) are individually coupled to the N optical outputs and carry one of the N output signals. Each optical path has an associated propagation delay. Optical delay elements may be located in any of the N optical paths that carry the output signals. The optical delay elements serve to lengthen the propagation delay (114a-e) of the optical path (112a-e) in which the optical delay element is located. In an alternative embodiment, the optical hold unit (200) includes an optical modulator (108) that has an electrical input, an optical input, and an optical output. An optical resonator (202) is also provided and connected to the optical output of the modulator (108). The optical resonator (202) also includes a partially transmissive output (222) to which an optical path is connected. The optical resonator (202) may also include a gain medium (208) or an optical switch (210).

    Abstract translation: 本发明的光保持单元（100）包括具有电输入，光输入和光输出的光调制器（108）。 还提供了具有光输入和N个光输出的1xN光分路器（106）。 此外，N个光路（112）分别耦合到N个光输出并传送N个输出信号中的一个。 每个光路具有相关联的传播延迟。 光延迟元件可以位于携带输出信号的N个光路中的任一个中。 光延迟元件用于延长光延迟元件所在的光路（112a-e）的传播延迟（114a-e）。 在替代实施例中，光学保持单元（200）包括具有电输入，光输入和光输出的光调制器（108）。 光学谐振器（202）也被提供并连接到调制器（108）的光输出端。 光学谐振器（202）还包括连接有光路的部分透射输出（222）。 光谐振器（202）还可以包括增益介质（208）或光开关（210）。

    Quantum-confined Stark effect quantum-dot optical modulator
    9.
    发明公开
    Quantum-confined Stark effect quantum-dot optical modulator 审中-公开
    Optischer Modulator mit Quantenpunkt-begrenztem Stark-Effekt

    公开(公告)号：EP1416316A1

    公开(公告)日：2004-05-06

    申请号：EP03255545.0

    申请日：2003-09-05

    Applicant: Northrop Grumman Corporation

    Inventor： Livingston, Peter M. ,  Hom, Steven R. ,  Kunkee, Elizabeth T.

    IPC: G02F1/225 ,  G02F1/017 ,  H01L29/12

    CPC classification number: B82Y20/00 ,  B82Y10/00 ,  G02F1/01708 ,  G02F1/2257 ,  G02F2001/01791 ,  G02F2201/126 ,  H01L29/127

    Abstract: A quantum-confined Stark effect quantum-dot optical modulator (115) includes an interferometer (130) having a beam splitter (135), first and second parallel optical branches (140a,140b) fed by the beam splitter (135) and a beam combiner (145) fed by the first and second parallel optical branches and a laser (110) for feeding a laser beam to the beam splitter. First and second optical phase shifters (150a,150b) are provided in respective ones of the first and second parallel optical branches. Each optical phase shifter includes an intrinsic semiconductor crystalline planar layer and p-type and n-type planar semiconductor layers on opposite faces of the intrinsic semiconductor crystalline planar layer, the intrinsic layer lying in a plane parallel to a direction of propagation of the laser beam in the respective optical branch. The intrinsic layer has plural layers of planar arrays of quantum dots therein. A reverse bias D.C. voltage source (320,325) is connected across the p-type and n-type layers.

    Abstract translation: 在每个光学移相器（150a，150b）的相对面上具有p型和n型平面半导体层的本征半导体晶体平面层具有量子点的平面阵列，并且位于平行于激光束传播方向的平面中。 一对调制源极端子跨过p型和n型层连接的反向偏压直流（DC）电压源（320,325）。 光学移相器还包括独立权利要求。

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