System and method for multi-dimensional encoding
    3.
    发明授权
    System and method for multi-dimensional encoding 有权
    用于多维编码的系统和方法

    公开(公告)号:US07418209B2

    公开(公告)日:2008-08-26

    申请号:US10462834

    申请日:2003-06-17

    摘要: The invention provides, according to its various embodiments, a method for secure communication that involves encoding and transmitting an optical communications signal that is encoded based on a multi-dimensional encoding technique. The multi-dimensional encoding technique includes multiple security layers and varies multiple physical characteristics of a communications signal. The multi-dimensional encoding technique may include at least one or more of encoding a phase of an optical communications signal, encoding a polarization of an optical communications signal, and encoding a frequency of an optical communications signal, or any combination thereof. According to embodiments of the invention, the encoding and/or any decoding of the optical communications signal may be carried out using one or more of an optical phase shift coding, a polarization multiplexing, and a multi-wavelength control. Multi-dimensional encoding and decoding keys are provided.

    摘要翻译: 根据其各种实施例,本发明提供一种用于安全通信的方法,其涉及编码和发送基于多维编码技术编码的光通信信号。 多维编码技术包括多个安全层并改变通信信号的多个物理特性。 多维编码技术可以包括编码光通信信号的相位,编码光通信信号的偏振,以及对光通信信号的频率进行编码,或其任何组合中的至少一个或多个。 根据本发明的实施例,光通信信号的编码和/或任何解码可以使用光相移编码,偏振复用和多波长控制中的一个或多个进行。 提供了多维编码和解码密钥。

    Secure optical communications system and method with coherent detection
    4.
    发明授权
    Secure optical communications system and method with coherent detection 有权
    安全的光通信系统和相干检测方法

    公开(公告)号:US07945174B2

    公开(公告)日:2011-05-17

    申请号:US12028121

    申请日:2008-02-08

    IPC分类号: H04B10/06 H04J14/00

    摘要: The invention provides a system and method for secure communication that involves encoding and transmitting an optical communications signal that is encoded based on a multi-dimensional encoding technique. This technique may include at least one or more of encoding a phase, a polarization, and a frequency of the signal. Light encoding is independent from its modulation with data. The data is modulated using any format; in the preferred embodiment the QPSK format is implemented. The encoded and modulated light is transmitted through free space or via a fiber optic network to a receiver, where the information is decoded. A coherent detection based on 90-degrees or 120-degrees optical hybrid is used to decode and recover the data from the received signal. Because the encoding of the transmitted light varies according to a specific pattern or sequence, one without knowledge of the transmission encoding sequence is prevented from decoding the transmitted information.

    摘要翻译: 本发明提供一种用于安全通信的系统和方法,其涉及编码和发送基于多维编码技术编码的光通信信号。 该技术可以包括编码信号的相位,极化和频率中的至少一个或多个。 光编码与数据的调制无关。 使用任何格式调制数据; 在优选实施例中,实现了QPSK格式。 编码和调制的光通过自由空间或经由光纤网络传输到接收机,其中信息被解码。 使用基于90度或120度光混合的相干检测来从接收信号中解码和恢复数据。 由于发送光的编码根据特定模式或序列而变化,因此不会发送不知道发送编码序列的信息来解码发送的信息。

    Secure optical communications system and method with coherent detection
    5.
    发明申请
    Secure optical communications system and method with coherent detection 有权
    安全的光通信系统和相干检测方法

    公开(公告)号:US20100028024A1

    公开(公告)日:2010-02-04

    申请号:US12028121

    申请日:2008-02-08

    IPC分类号: H04B10/06

    摘要: The invention provides a system and method for secure communication that involves encoding and transmitting an optical communications signal that is encoded based on a multi-dimensional encoding technique. This technique may include at least one or more of encoding a phase, a polarization, and a frequency of the signal. Light encoding is independent from its modulation with data. The data is modulated using any format; in the preferred embodiment the QPSK format is implemented. The encoded and modulated light is transmitted through free space or via a fiber optic network to a receiver, where the information is decoded. A coherent detection based on 90-degrees or 120-degrees optical hybrid is used to decode and recover the data from the received signal. Because the encoding of the transmitted light varies according to a specific pattern or sequence, one without knowledge of the transmission encoding sequence is prevented from decoding the transmitted information.

    摘要翻译: 本发明提供一种用于安全通信的系统和方法,其涉及编码和发送基于多维编码技术编码的光通信信号。 该技术可以包括编码信号的相位,极化和频率中的至少一个或多个。 光编码与数据的调制无关。 使用任何格式调制数据; 在优选实施例中,实现了QPSK格式。 编码和调制的光通过自由空间或经由光纤网络传输到接收机,其中信息被解码。 使用基于90度或120度光混合的相干检测来从接收信号中解码和恢复数据。 由于发送光的编码根据特定模式或序列而变化,因此不会发送不知道发送编码序列的信息来解码发送的信息。

    Coherent optical detector and coherent communication system and method
    6.
    发明授权
    Coherent optical detector and coherent communication system and method 有权
    相干光检测器和相干通信系统及方法

    公开(公告)号:US07327913B2

    公开(公告)日:2008-02-05

    申请号:US10669130

    申请日:2003-09-22

    摘要: An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides. The first and second waveguides connect one of the outputs of the first or second coupler and one of the inputs of the third or fourth couplers. The first, second, third and fourth couplers, the two crossing waveguides and the phase shifter are each formed as part of a single planar chip made of an electro-optical material.

    摘要翻译: 光学装置设置有第一和第二输入。 耦合的第一耦合耦合到第一输入并且产生至少第一和第二输出。 第二耦合器耦合到第二输入并且产生至少第一和第二输出。 第三耦合器耦合到第一耦合器的第一输出端和第二耦合器的第一输出端。 第四耦合器耦合到第一耦合器的第二输出端和第二耦合器的第二输出端。 第一和第二交叉波导具有被选择的角度,以最小化第一和第二交叉波导之间的串扰和损耗。 第一交叉波导将来自第一耦合器的第一或第二输出中的一个与第四耦合器的输入连接。 第二交叉波导将来自第二耦合器的第一或第二输出中的一个与第三耦合器的输入连接。 第一移相器耦合到第一和第二波导。 第一和第二波导连接第一或第二耦合器的输出之一和第三或第四耦合器的输入之一。 第一,第二,第三和第四耦合器,两个交叉波导和移相器各自形成为由电光材料制成的单个平面芯片的一部分。

    Laser vibrometry with coherent detection
    7.
    发明授权
    Laser vibrometry with coherent detection 有权
    激光振动测量与相干检测

    公开(公告)号:US07242481B2

    公开(公告)日:2007-07-10

    申请号:US11055547

    申请日:2005-02-09

    IPC分类号: G01B11/02 G01B9/02

    CPC分类号: G01H9/00 G01H9/004

    摘要: An optical system provides information about tangential vibration components of a surface at remote location. The optical system includes a light source assembly that emits first and second beams, each having one or more wavelengths and one or two polarizations. The first and second beams are directed to the interrogated surface. A detector system is positioned to detect a third beam formed by at least a portion of the first and second beams being reflected from the interrogated surface. The first, second and third beams having incident and reflection angles relative to the interrogated surface that do not lay in a same plane. The detector system positioned remotely from the interrogated surface, and providing information on a phase change in the third beam relative to the first and second beam. The phase change is indicative of at least one surface vibration vector component of the interrogated surface. The detector system is a 90 degree optical hybrid balanced detector with four photodiodes.

    摘要翻译: 光学系统提供关于远程位置处的表面的切向振动分量的信息。 光学系统包括发射第一和第二光束的光源组件,每个光束具有一个或多个波长和一个或两个偏振。 第一和第二光束被引导到被询问的表面。 检测器系统被定位成检测由被询问的表面反射的第一和第二光束的至少一部分形成的第三光束。 第一,第二和第三光束具有相对于被询问的表面的入射角和反射角度,其不处于同一平面内。 检测器系统远离询问的表面定位,并且提供关于第三束相对于第一和第二光束的相位变化的信息。 相变表示询问表面的至少一个表面振动矢量分量。 检测器系统是具有四个光电二极管的90度光学混合平衡检测器。

    Coherent optical detector and coherent communication system and method

    公开(公告)号:US07715720B2

    公开(公告)日:2010-05-11

    申请号:US11695920

    申请日:2007-04-03

    IPC分类号: H04B10/00 H04J14/00 H04J14/02

    摘要: An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides. The first and second waveguides connect one of the outputs of the first or second coupler and one of the inputs of the third or fourth couplers. The first, second, third and fourth couplers, the two crossing waveguides and the phase shifter are each formed as part of a single planar chip made of an electro-optical material.

    COHERENT OPTICAL DETECTOR AND COHERENT COMMUNICATION SYSTEM AND METHOD
    9.
    发明申请
    COHERENT OPTICAL DETECTOR AND COHERENT COMMUNICATION SYSTEM AND METHOD 有权
    相关光学检测器和相关通信系统及方法

    公开(公告)号:US20090142051A1

    公开(公告)日:2009-06-04

    申请号:US11938655

    申请日:2007-11-12

    摘要: An optical device is provided with first and second inputs. A first coupler coupled is coupled to the first input and produces at least a first and second output. A second coupler is coupled to the second input and produces at least a first and second output. A third coupler is coupled to the first output of the first coupler and to the first output of the second coupler. A fourth coupler is coupled to the second output of the first coupler and to the second output of the second coupler. First and second crossing waveguides are provided with an angle selected to minimize crosstalk and losses between the first and second cross waveguides. The first crossing waveguide connects one of the first or second outputs from the first coupler with an input of the fourth coupler. The second crossing waveguide connects one of the first or second outputs from the second coupler with an input of the third coupler. A first phase shifter is coupled to the first and second waveguides. The first and second waveguides connect one of the outputs of the first or second coupler and one of the inputs of the third or fourth couplers. The first, second, third and fourth couplers, the two crossing waveguides and the phase shifter are each formed as part of a single planar chip made of an electro-optical material.

    摘要翻译: 光学装置设置有第一和第二输入。 耦合的第一耦合耦合到第一输入并且产生至少第一和第二输出。 第二耦合器耦合到第二输入并且产生至少第一和第二输出。 第三耦合器耦合到第一耦合器的第一输出端和第二耦合器的第一输出端。 第四耦合器耦合到第一耦合器的第二输出端和第二耦合器的第二输出端。 第一和第二交叉波导具有被选择的角度,以最小化第一和第二交叉波导之间的串扰和损耗。 第一交叉波导将来自第一耦合器的第一或第二输出中的一个与第四耦合器的输入连接。 第二交叉波导将来自第二耦合器的第一或第二输出中的一个与第三耦合器的输入连接。 第一移相器耦合到第一和第二波导。 第一和第二波导连接第一或第二耦合器的输出之一和第三或第四耦合器的输入之一。 第一,第二,第三和第四耦合器,两个交叉波导和移相器各自形成为由电光材料制成的单个平面芯片的一部分。