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公开(公告)号：US20170257165A1
公开(公告)日：2017-09-07
申请号：US15508696
申请日：2015-09-02
Applicant: BAE Systems plc
Inventor： Christopher Ralph Pescod , Mohammed Nawaz , Colin James Harper
IPC: H04B10/2575 , B64F5/60
CPC classification number: H04B10/2575 , B64F5/60
Abstract: Signal processing apparatus located in and/or mounted on an entity (e.g. an aircraft), the signal processing apparatus comprising: a first module; a second module connected to the first module such that signals may be sent between those modules; one or more amplifiers configured to amplify signals sent between the modules; and one or more optical fibres. The first module is located at a first location in/on the entity. The second module and the one or more amplifiers are located at a second location in/on the entity. The first location and the second location are spatially separate, i.e. remote from one another. The optical fibre(s) couple together the first and the second locations such that a signal sent between those locations is sent via the optical fibre(s).
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公开(公告)号：US20170222396A1
公开(公告)日：2017-08-03
申请号：US15515452
申请日：2015-10-05
Applicant: BAE Systems plc
Inventor： Christopher Ralph Pescod , Mohammed Nawaz
IPC: H01S5/024
CPC classification number: H01S5/02415 , H01S5/02453 , H01S5/02476
Abstract: An optical transmitter (201) comprising: a laser diode (102) for transmitting an optical signal; a first temperature sensor (106) configured to measure a temperature at or proximate to the laser diode (102); a second temperature sensor (202) configured to measure a temperature of an environment in which the optical transmitter (201) is operating; a thermoelectric device (208) configured to apply heating or cooling to the laser diode (102); and a controller (212) configured to, using the temperature measurements taken by the first temperature sensor (106) and the second temperature sensor (202), control the thermoelectric device (208) to heat or cool the laser diode (102).
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公开(公告)号：US10090637B2
公开(公告)日：2018-10-02
申请号：US15515452
申请日：2015-10-05
Applicant: BAE Systems plc
Inventor： Christopher Ralph Pescod , Mohammed Nawaz
IPC: H01S5/024
Abstract: An optical transmitter (201) comprising: a laser diode (102) for transmitting an optical signal; a first temperature sensor (106) configured to measure a temperature at or proximate to the laser diode (102); a second temperature sensor (202) configured to measure a temperature of an environment in which the optical transmitter (201) is operating; a thermoelectric device (208) configured to apply heating or cooling to the laser diode (102); and a controller (212) configured to, using the temperature measurements taken by the first temperature sensor (106) and the second temperature sensor (202), control the thermoelectric device (208) to heat or cool the laser diode (102).
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公开(公告)号：US20170302055A1
公开(公告)日：2017-10-19
申请号：US15515673
申请日：2015-10-05
Applicant: BAE Systems plc
Inventor： Christopher Ralph Pescod , Mohammed Nawaz
CPC classification number: H01S5/02415 , H01S5/02453 , H01S5/02476 , H01S5/06804
Abstract: A Peltier effect heat transfer system (208) comprising: a plurality of heat transfer elements (301-308); wherein each heat transfer element (301-308) comprises at least one semiconductor element pair arranged to yield Peltier effect heat transfer, each semiconductor element pair comprising a P-doped semiconductor element (408) and an N-doped semiconductor element (410); and the heat transfer elements (301-308) are independent such that each heat transfer element (301-308) can be activated so as to yield Peltier effect heat transfer independently of each other heat transfer element (301-308).
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公开(公告)号：US09658476B2
公开(公告)日：2017-05-23
申请号：US14398241
申请日：2013-04-30
Applicant: BAE SYSTEMS plc
Inventor： Andrew James Smith , Mohammed Nawaz , Simon Charles Giles
CPC classification number: G02F1/0123 , G02F1/225 , G02F1/2255 , G02F2001/212
Abstract: Methods and apparatus for controlling a bias voltage supplied to an optical modulator, the modulator comprising a biasable component, the biasable component being 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, the target for the output power of the modulator being an output power corresponding to the modulator operating at quadrature; applying, to the biasable component, a bias voltage (20) having an initial value of 0V; and, thereafter, varying the bias voltage (20) until the value of the bias voltage (20) is the value that is closest to the initial value and that biases the biasable component so that the output power of the modulator is within a pre-defined range of the target output power.
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Patent Agency Ranking
公开(公告)号：US20150110436A1
公开(公告)日：2015-04-23
申请号：US14398241
申请日：2013-04-30
Applicant: BAE SYSTEMS plc
Inventor： Andrew James Smith , Mohammed Nawaz , Simon Charles Giles
CPC classification number: G02F1/0123 , G02F1/225 , G02F1/2255 , G02F2001/212
Abstract: Methods and apparatus for controlling a bias voltage supplied to an optical modulator, the modulator comprising a biasable component, the biasable component being 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, the target for the output power of the modulator being an output power corresponding to the modulator operating at quadrature; applying, to the biasable component, a bias voltage (20) having an initial value of 0V; and, thereafter, varying the bias voltage (20) until the value of the bias voltage (20) is the value that is closest to the initial value and that biases the biasable component so that the output power of the modulator is within a pre-defined range of the target output power.
Abstract translation: 用于控制提供给光调制器的偏置电压的方法和装置，所述调制器包括可偏置部件，所述可偏置部件可被配置为通过施加所述偏置电压（20）而偏置，使得所述调制器以正交方式工作，所述方法包括： 提供调制器的输出功率的目标，调制器的输出功率的目标是对应于正交运算的调制器的输出功率; 将具有初始值0V的偏置电压（20）施加到所述可偏压部件; 然后改变所述偏置电压（20）直到所述偏置电压（20）的值是最接近所述初始值的值，并且偏置所述可偏置分量，使得所述调制器的输出功率在预调制器内， 定义范围的目标输出功率。
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公开(公告)号：US10191219B2
公开(公告)日：2019-01-29
申请号：US15561175
申请日：2016-03-29
Applicant: BAE SYSTEMS plc
Inventor： Christopher Ralph Pescod , Mohammed Nawaz , Colin James Harper
Abstract: An optical selector arrangement (22), comprising: a first set of optical ports (30), having a first number of optical ports, the first number being greater than or equal to 2; a second set of optical ports (42), having a second number of optical ports, the second number being greater than the first number; the second set of optical ports being for communicating with the first set of optical ports, a selector interface (40) for the optical selector arrangement, the selector interface comprising the second set of optical ports (42), a part of the optical selector arrangement functioning as a selector (44), the selector being arranged to selectively optically couple the first set of optical ports (30) to a set of ports of the second set of optical ports (42) of the selector interface, the selector (44) being rotatable relative to the selector interface (40) to facilitate the selection by optically aligning the first set of optical ports (30) to the second set of optical ports (42) of the selector interface (40); the selector (44) being configured to be continuously relatively rotatable over multiple rotations, to selectively optically couple the first set of optical ports (30) to a different set of ports of the second set of optical ports of the selector interface.
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公开(公告)号：US09846318B2
公开(公告)日：2017-12-19
申请号：US14398244
申请日：2013-04-30
Applicant: BAE SYSTEMS plc
Inventor： Andrew James Smith , Mohammed Nawaz
CPC classification number: G02F1/0123 , G02F1/225 , G02F1/2255 , G02F2001/212 , H04B10/50575 , H04B10/50595
Abstract: Methods and apparatus for controlling a bias voltage (20) supplied to an optical modulator that comprises a biasable component configurable to be biased by application of the bias voltage (20), the method comprising: providing a target for the modulator output power; applying, to the biasable component, a bias voltage (20) that biases the biasable component so that the output power is within a pre-defined range of the target; monitoring the output power and, if the output power of the modulator is determined to be outside the pre-defined range, varying the value of the bias voltage (20) to bring the output power back within the pre-defined range; and monitoring the optical input to the modulator and, if it has been disabled, maintaining the bias voltage (20) at its current level for a pre-determined length of time that is dependent upon how long the modulator has been operating at quadrature.
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公开(公告)号：US09762325B2
公开(公告)日：2017-09-12
申请号：US14651894
申请日：2013-12-13
Applicant: BAE SYSTEMS plc
Inventor： David John Aitken , Simon Charles Giles , Robert John Mark Longstone , Mohammed Nawaz , Andrew James Smith , Michael Andrew Scott
IPC: H04B10/00 , H04B10/2575 , G02B6/36 , H01Q3/26 , H04B10/80 , H04B10/516
CPC classification number: H04B10/25752 , G02B6/3604 , H01Q3/2676 , H04B10/516 , H04B10/801
Abstract: An optical signal transmission apparatus (1) for a rotating antenna comprising a plurality of optical modulators (6) arranged for receiving a respective plurality of analog RF signals (5) and for modulating a respective plurality of optical signals therewith to produce a plurality of modulated analog optical signals (8). A plurality of opto-electrical converters (14) each converts a respective modulated analog optical signal (13) into an analog electrical signal. The plurality of optical modulators (6) are rotationally coupled in optical communication with the plurality of opto-electrical converters (14) via an optical rotary joint (10) including a reversion prism.
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公开(公告)号：US20150253509A1
公开(公告)日：2015-09-10
申请号：US14430836
申请日：2013-09-24
Applicant: BAE SYSTEMS PLC
Inventor： Christopher Ralph Pescod , Mohammed Nawaz
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).
Abstract translation: 一种用于操作光学旋转接头（2）的方法和装置; 包括：通过以下步骤提供要通过光学旋转接头（2）的相机传感器信号的冗余：（i）经由光学转换切换装置（70）将来自多个相机传感器（28,30）的信号传递到光学旋转 关节（2）; 和/或（ii）经由光学切换开关装置（70）从光学旋转接头（2）向相机传感器（28,30）传递用于多个照相机传感器（28,30）的信号。 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）。
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