公开(公告)号：US20150124309A1

公开(公告)日：2015-05-07

申请号：US14398238

申请日：2013-04-30

Applicant: BAE SYSTEMS plc

Inventor： Andrew James Smith ,  Mohammed Nawaz ,  Simon Charles Giles

IPC: G02F1/01 ,  G02F1/225

CPC classification number: G02F1/0123 ,  G02F1/225 ,  G02F1/2255 ,  G02F2001/212

Abstract: Methods and apparatus for finding a bias voltage (20) corresponding to a quadrature point of an optical modulator, the modulator comprising a biasable component which is configurable to be biased by application of the bias voltage (20) such that the modulator operates at quadrature, the method comprising: providing a target for the output power of the modulator which corresponds to quadrature; applying, to the biasable component, a bias voltage (20) having an initial value; thereafter, finding a value for the bias voltage (20) that biases the biasable component such that the output power of the modulator is within a pre-defined range of the target by, starting at the initial value, alternately increasing and decreasing (or decreasing and increasing) the bias voltage (20) with gradually increasing amplitude; and identifying the found value for the bias voltage (20) as a bias voltage corresponding to a quadrature point of the optical modulator.

Abstract translation: 用于找到对应于光调制器的正交点的偏置电压（20）的方法和装置，所述调制器包括可偏置组件，其可配置为通过施加偏置电压（20）而偏置，使得调制器以正交的方式工作， 该方法包括：提供对应于正交的调制器的输出功率的目标; 向所述可偏压部件施加具有初始值的偏置电压（20）; 此后，找到偏置偏置电压（20）的值，该偏置电压（20）偏置可偏置分量，使得调制器的输出功率在目标的预定义范围内，从初始值开始，交替地增加和减少（或减少） 并增加振幅的偏置电压（20）; 以及将所述偏置电压（20）的所找到的值识别为对应于所述光学调制器的正交点的偏置电压。

公开(公告)号：US09810849B2

公开(公告)日：2017-11-07

申请号：US14430839

申请日：2013-09-24

Applicant: BAE SYSTEMS plc

Inventor： Christopher Ralph Pescod ,  Mohammed Nawaz

IPC: G02B6/36 ,  H04J14/02 ,  H04B10/25 ,  H04Q11/00

CPC classification number: G02B6/3604 ,  H04B10/2504 ,  H04J14/02 ,  H04Q11/0005 ,  H04Q2011/0037

Abstract: A method and apparatus for operating an optical rotating joint (2); comprising: routing optical signals through an optical rotating joint (2) by using a first optical circulator (64) on a first side of the optical rotating joint (2) to receive an optical signal and direct the optical signal onward to a first side of the optical rotating joint (2), and using a second optical circulator (93) on a second side of the optical rotating joint (2) to receive the optical signal from the second side of the optical rotating joint (2) and direct it onwards. The signals may be sensor control signals or sensor output signals to/from a plurality of sensors (26, 28, 30), for example camera sensors. The apparatus may further comprise one or more wavelength division multiplexers (68, 94) and/or wavelength division demultiplexers (66, 95).

公开(公告)号：US09810848B2

公开(公告)日：2017-11-07

申请号：US14430836

申请日：2013-09-24

Applicant: BAE SYSTEMS plc

Inventor： Christopher Ralph Pescod ,  Mohammed Nawaz

IPC: G02B6/36 ,  H04J14/02 ,  H04B10/032 ,  H04B10/25

CPC classification number: G02B6/3604 ,  H04B10/032 ,  H04B10/25 ,  H04J14/0254

Abstract: A method and apparatus for operating an optical rotating joint (2); comprising: providing redundancy for camera sensor signals to be passed through an optical rotating joint (2) by: (i) passing signals from a plurality of camera sensors (28, 30) via an optical changeover switching arrangement (70) to the optical rotating joint (2); and/or (ii) passing signals for a plurality of camera sensors (28, 30) toward the camera sensors (28, 30) from the optical rotating joint (2) via an optical changeover switching arrangement (70). The signals may be sensor control signals or sensor output signals to/from a plurality of sensors (26, 28, 30), for example camera sensors. The apparatus may further comprise one or more wavelength division multiplexers (68, 94) and/or wavelength division demultiplexers (66, 95).

公开(公告)号：US09551840B2

公开(公告)日：2017-01-24

申请号：US14430835

申请日：2013-09-24

Applicant: BAE SYSTEMS plc

Inventor： Christopher Ralph Pescod ,  Mohammed Nawaz

IPC: G02B6/36 ,  G02B6/46

CPC classification number: G02B6/3604 ,  G02B6/46 ,  Y10T29/49716 ,  Y10T29/49826

Abstract: An optical rotating joint installation; comprising: a drive shaft for a rotating interface, the drive shaft comprising a hollow central bore; and an optical rotating joint located in the hollow central bore. The proportion of the cross-sectional area of the material retained in the annular section of the drive shaft is preferably greater than or equal to 50%, more preferably 60%, yet more preferably 75%. The diameter of the hollow central bore is preferably less than or equal to 20 mm, more preferably 16 mm. The optical rotating joint installation may be provided as a retro-fit to replace an existing solid drive shaft that does not have an optical rotating joint, for example by hollowing out the existing solid drive shaft or by replacing the existing solid drive shaft with a drive shaft with a hollow central bore.

Abstract translation: 光学旋转接头装置; 包括：用于旋转接口的驱动轴，所述驱动轴包括中空的中心孔; 以及位于中空中心孔中的光学旋转接头。 保持在驱动轴的环形部分中的材料的横截面面积的比例优选大于或等于50％，更优选为60％，还更优选为75％。 中空中心孔的直径优选小于或等于20mm，更优选为16mm。 光学旋转接头设备可以被设置为重新配合以替换不具有光学旋转接头的现有固体驱动轴，例如通过挖空现有的实心驱动轴或者用驱动器替换现有的实心驱动轴 轴具有中空的中心孔。

公开(公告)号：US09291835B2

公开(公告)日：2016-03-22

申请号：US14398238

申请日：2013-04-30

Applicant: BAE SYSTEMS plc

Inventor： Andrew James Smith ,  Mohammed Nawaz ,  Simon Charles Giles

IPC: G02B26/00 ,  G02F1/01 ,  G02F1/225 ,  G02F1/21

CPC classification number: G02F1/0123 ,  G02F1/225 ,  G02F1/2255 ,  G02F2001/212

Abstract: Methods and apparatus for finding a bias voltage (20) corresponding to a quadrature point of an optical modulator, the modulator comprising a biasable component which is configurable to be biased by application of the bias voltage (20) such that the modulator operates at quadrature, the method comprising: providing a target for the output power of the modulator which corresponds to quadrature; applying, to the biasable component, a bias voltage (20) having an initial value; thereafter, finding a value for the bias voltage (20) that biases the biasable component such that the output power of the modulator is within a pre-defined range of the target by, starting at the initial value, alternately increasing and decreasing (or decreasing and increasing) the bias voltage (20) with gradually increasing amplitude; and identifying the found value for the bias voltage (20) as a bias voltage corresponding to a quadrature point of the optical modulator.

Abstract translation: 用于找到对应于光调制器的正交点的偏置电压（20）的方法和装置，所述调制器包括可偏置组件，其可配置为通过施加偏置电压（20）而偏置，使得调制器以正交的方式工作， 该方法包括：提供对应于正交的调制器的输出功率的目标; 向所述可偏压部件施加具有初始值的偏置电压（20）; 此后，找到偏置偏置电压（20）的值，该偏置电压（20）偏置可偏置分量，使得调制器的输出功率在目标的预定义范围内，从初始值开始，交替地增加和减少（或减少） 并增加振幅的偏置电压（20）; 以及将所述偏置电压（20）的所找到的值识别为对应于所述光学调制器的正交点的偏置电压。

公开(公告)号：US20150253512A1

公开(公告)日：2015-09-10

申请号：US14430835

申请日：2013-09-24

Applicant: BAE SYSTEMS plc

Inventor： Christopher Ralph Pescod ,  Mohammed Nawaz

IPC: G02B6/36 ,  G02B6/46

CPC classification number: G02B6/3604 ,  G02B6/46 ,  Y10T29/49716 ,  Y10T29/49826

Abstract: An optical rotating joint installation; comprising: a drive shaft for a rotating interface, the drive shaft comprising a hollow central bore; and an optical rotating joint located in the hollow central bore. The proportion of the cross-sectional area of the material retained in the annular section of the drive shaft is preferably greater than or equal to 50%, more preferably 60%, yet more preferably 75%. The diameter of the hollow central bore is preferably less than or equal to 20 mm, more preferably 16 mm. The optical rotating joint installation may be provided as a retro-fit to replace an existing solid drive shaft that does not have an optical rotating joint, for example by hollowing out the existing solid drive shaft or by replacing the existing solid drive shaft with a drive shaft with a hollow central bore.

Abstract translation: 光学旋转接头装置; 包括：用于旋转接口的驱动轴，所述驱动轴包括中空的中心孔; 以及位于中空中心孔中的光学旋转接头。 保持在驱动轴的环形部分中的材料的横截面面积的比例优选大于或等于50％，更优选为60％，还更优选为75％。 中空中心孔的直径优选小于或等于20mm，更优选为16mm。 光学旋转接头设备可以被设置为重新配合以替换不具有光学旋转接头的现有固体驱动轴，例如通过挖空现有的实心驱动轴或者用驱动器替换现有的实心驱动轴 轴具有中空的中心孔。

公开(公告)号：US20150215589A1

公开(公告)日：2015-07-30

申请号：US14430839

申请日：2013-09-24

Applicant: BAE SYSTEMS PLC

Inventor： Christopher Ralph Pescod ,  Mohammed Nawaz

IPC: H04N7/22 ,  H04B10/25 ,  H04N5/225

CPC classification number: G02B6/3604 ,  H04B10/2504 ,  H04J14/02 ,  H04Q11/0005 ,  H04Q2011/0037

Abstract: A method and apparatus for operating an optical rotating joint (2); comprising: routing optical signals through an optical rotating joint (2) by using a first optical circulator (64) on a first side of the optical rotating joint (2) to receive an optical signal and direct the optical signal onward to a first side of the optical rotating joint (2), and using a second optical circulator (93) on a second side of the optical rotating joint (2) to receive the optical signal from the second side of the optical rotating joint (2) and direct it onwards. The signals may be sensor control signals or sensor output signals to/from a plurality of sensors (26, 28, 30), for example camera sensors. The apparatus may further comprise one or more wavelength division multiplexers (68, 94) and/or wavelength division demultiplexers (66, 95).

Abstract translation: 一种用于操作光学旋转接头（2）的方法和装置; 包括：通过使用光学旋转接头（2）的第一侧上的第一光学循环器（64）通过光学旋转接头（2）路由光学信号，以接收光学信号并将光信号引导到第一侧 光旋转接头（2），并且在光旋转接头（2）的第二侧上使用第二光循环器（93），以从光旋转接头（2）的第二侧接收光信号并将其向前引导 。 这些信号可以是来自多个传感器（26,28,30）的传感器控制信号或传感器输出信号，例如相机传感器。 该装置还可以包括一个或多个波分复用器（68,94）和/或波分多路分解器（66,95）。