公开(公告)号：WO1998023019A1

公开(公告)日：1998-05-28

申请号：PCT/GB1997003161

申请日：1997-11-18

Applicant: STC SUBMARINE SYSTEMS LIMITED ,  FARRAR, Anthony, John ,  FOSTER, Basil, Bernard

Inventor： STC SUBMARINE SYSTEMS LIMITED

IPC: H02H09/02

CPC classification number: H02H9/025 ,  H02H1/06

Abstract: A surge protector has a predetermined threshold detector (15) which is arranged to provide a compensating voltage drop in opposition to a current surge in a power feed line. The compensator is suitable for connection in series with the output of a power feed equipment, such as is employed for powering equipment employed in undersea optical communication systems.

Abstract translation: 浪涌保护器具有预定阈值检测器（15），其被设置成提供与馈电线路中的电流浪涌相对的补偿电压降。 补偿器适用于与供电设备的输出串联连接，例如用于为在海底光通信系统中使用的设备供电。

公开(公告)号：WO1997048193A1

公开(公告)日：1997-12-18

申请号：PCT/GB1997001485

申请日：1997-06-02

Applicant: STC SUBMARINE SYSTEMS LIMITED ,  HIRST, Ian, Johnson

Inventor： STC SUBMARINE SYSTEMS LIMITED

IPC: H04B10/08

CPC classification number: H04B10/2931 ,  H04B10/0771 ,  H04B10/0777 ,  H04B10/2912 ,  H04B2210/074 ,  H04B2210/078

Abstract: Methods of providing supervising signals to amplifiers of a fibre optic system are described. In the system, traffic signals are carried at one or more traffic signal carrier wavelengths and are amplified by the amplifiers so that they are maintained in strength. Supervisory signals are provided either at two different carrier wavelengths, or at a single carrier wavelength which is, although different from the traffic signal carrier wavelengths, such that the supervisory signal is maintained in strength by the same amplifiers. Supervisory information is provided on the supervisory signal by modulation at a frequency substantially lower than that of a traffic bit rate for detection by detectors located at the amplifiers. A fibre optic system is also described which is adapted to utilise this method.

Abstract translation: 描述了向光纤系统的放大器提供监控信号的方法。 在该系统中，交通信号以一个或多个交通信号载波波长携带，并被放大器放大，以保持强度。 监控信号以两个不同的载波波长或单个载波波长提供，虽然它与业务信号载波波长不同，使得监控信号由相同的放大器维持强度。 监控信息通过调制以比位于放大器处的检测器检测的业务比特率的频率大得多的频率提供给监控信号。 还描述了适于利用该方法的光纤系统。

公开(公告)号：WO1997006617A1

公开(公告)日：1997-02-20

申请号：PCT/GB1996001890

申请日：1996-08-02

Applicant: STC SUBMARINE SYSTEMS LIMITED ,  JONES, Kevan, Peter ,  KENDRICK, Simon, James

Inventor： STC SUBMARINE SYSTEMS LIMITED

IPC: H04J14/02

CPC classification number: H04J14/0212 ,  H04J14/0209 ,  H04J14/0219

Abstract: Apparatus and methods for signal routing within fibre optic networks are described. Switching means (11, 18, 21, 22) are provided within or outside the ports of an add/drop multiplexer having passive optical components such as circulators (13, 14) to change the routing of signals at predetermined carrier wavelengths, for example between ports of a branching unit. This can be used to divert all signals away from a given port of a branching unit, or to add capacity to a particular path. The switching principles employed can be extended to other forms of wavelength routing element and add/drop multiplexers.

Abstract translation: 描述了光纤网络内信号路由的装置和方法。 开关装置（11,18,21,22）设置在具有诸如循环器（13,14）的无源光学部件的分插复用器的端口内或外部，以改变预定载波波长处的信号的路由，例如在 分支单元的端口。 这可以用于将所有信号转移离开分支单元的给定端口，或者增加到特定路径的容量。 所采用的切换原理可以扩展到其他形式的波长路由元件和分插复用器。

公开(公告)号：WO1998019406A1

公开(公告)日：1998-05-07

申请号：PCT/GB1997002939

申请日：1997-10-24

Applicant: STC SUBMARINE SYSTEMS LIMITED ,  HAXELL, Ian

Inventor： STC SUBMARINE SYSTEMS LIMITED

IPC: H04B10/135

CPC classification number: H04B10/532 ,  G02F1/011 ,  G02F2001/0139

Abstract: A polarisation scrambler is provided which includes an optical phase modulator (2) and an amplitude waveguide (3). The optical phase modulator (2) requires no misalignment in polarisation state to that which emerges from the amplitude modulator waveguide (3). In particular, the polarisation scrambler comprises an optical phase modulator (2), and an amplitude modulator waveguide (3) integrated on a single substrate, with an output fibre (9) coupled to a birefringent fibre (1).

Abstract translation: 提供一种包括光相位调制器（2）和幅度波导（3）的偏振扰乱器。 光学相位调制器（2）不需要在偏振状态下与从幅度调制器波导（3）出现的相位不对准。 特别地，偏振扰乱器包括光学相位调制器（2）和集成在单个基板上的幅度调制器波导（3），其中耦合到双折射光纤（1）的输出光纤（9）。

公开(公告)号：WO1997032191A1

公开(公告)日：1997-09-04

申请号：PCT/GB1997000564

申请日：1997-02-28

Applicant: STC SUBMARINE SYSTEMS LIMITED ,  SPENCER, Geoffrey ,  BUTLER, David

Inventor： STC SUBMARINE SYSTEMS LIMITED

IPC: G01M11/00

CPC classification number: G01M11/3127

Abstract: An optical time domain Reflectometer has means (40, 42) for generating three different wavelengths. Means (40, 42) is provided for alternating between one of the wavelengths ( lambda 1) and the other two wavelengths ( lambda 1+ DELTA lambda , lambda 1- DELTA lambda ) in response to a signal generator (44). This enables the provision of a test signal for transmission on an optical fibre transmission cable.

Abstract translation: 光学时域反射计具有用于产生三种不同波长的装置（40,42）。 提供装置（40,42）以响应于信号发生器（44）在一个波长（λ1）和另外两个波长（λ1+ DELTAλ，λ1-TATAλ）之间交替。 这使得能够提供用于在光纤传输电缆上传输的测试信号。

公开(公告)号：WO1997023965A1

公开(公告)日：1997-07-03

申请号：PCT/GB1996003145

申请日：1996-12-19

Applicant: STC SUBMARINE SYSTEMS LIMITED ,  SPENCER, Geofrrey

Inventor： STC SUBMARINE SYSTEMS LIMITED

IPC: H04B10/08

CPC classification number: H04B10/2503 ,  H04B10/071

Abstract: A bi-directional optical signal transmission network comprises an outbound (12) and an inbound (14) fibre each including an optical amplifier/repeater (18/24). An optical coupling (30, 38, 40) communicates between one of the fibres (12), to the output side of the amplifier/repeater (18) and the other fibre (14). The coupling includes a filter (40) which is arranged to permit transfer of a test signal wavelength between the outbound (12) and the inbound (14) fibre but which prevents transfer of unwanted traffic signal.

Abstract translation: 双向光信号传输网络包括每个包括光放大器/中继器（18/24）的出站（12）和入站（14）光纤。 光耦合器（30,38,40）在一个光纤（12）之间连接到放大器/中继器（18）的输出侧和另一个光纤（14）。 耦合器包括滤波器（40），其被布置成允许在出站（12）和入站（14）光纤之间传送测试信号波长，但是防止不期望的交通信号的传送。

公开(公告)号：WO1997006614A1

公开(公告)日：1997-02-20

申请号：PCT/GB1996001891

申请日：1996-08-02

Applicant: STC SUBMARINE SYSTEMS LIMITED ,  JONES, Kevan, Peter ,  PETTITT, Martin

Inventor： STC SUBMARINE SYSTEMS LIMITED

IPC: H04J03/08

CPC classification number: G02B6/2932 ,  G02B6/29332 ,  G02B6/29353 ,  G02B6/29383 ,  G02B6/29398 ,  H04J14/0204 ,  H04J14/0206 ,  H04J14/0213 ,  H04J14/0217

Abstract: A number of add/drop multiplexers comprising passive optical components for wavelength division multiplexing are described. These add/drop multiplexers are particularly adapted for use in branching units (10) of such networks to allow signals passing along fibres (1, 2, 11, 12) of a main trunck between terminal stations (20, 30) to be dropped to and added from a spur station (40), the design of the add/drop multiplexers allowing a reduced number of spur fibres (3, 13) to be used as signals are routed between trunk fibres (1, 2, 11, 12) at spur fibres (3, 13) according to carrier wavelength.

Abstract translation: 描述了包括用于波分复用的无源光学部件的多个分插复用器。 这些分插复用器特别适用于这种网络的分支单元（10），以允许沿着终端站（20,30）之间的主中继线的光纤（1,2,11,12）传送的信号被丢弃到 并且从支线站（40）添加，允许减少数量的辅助纤维（3,13）用作信号的分插复用器的设计在主干光纤（1,2,11,12）之间路由在 支撑纤维（3,13）根据载体波长。

公开(公告)号：WO1997032410A1

公开(公告)日：1997-09-04

申请号：PCT/GB1997000566

申请日：1997-02-28

Applicant: STC SUBMARINE SYSTEMS LIMITED ,  WEBB, Stephen, Michael

Inventor： STC SUBMARINE SYSTEMS LIMITED

IPC: H04B10/155

CPC classification number: H04B10/255 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/508

Abstract: An optical signal transmitter (10) comprises a coherent light generator (12) for generating a carrier wavelength and a modulating means (16, 32) coupled with the output of the light generator. The modulating means has a series arrangement of an optical intensity modulator (16) and an optical phase modulator (32) coupled between the input and an output of the modulating means. The intensity modulator (16) has an input (26) for a non return to zero (NRZ) digital signal of a predetermined data rate as defined by a clock generator. The phase modulator (32) has an input coupled with the clock generator which provides pulses to the phase modulator at the data rate, or at an even multiple of the data rate, but phase shifted relative to the data signal such that one end of each digital period is red shifted and the other end is blue shifted to facilitate detection.

Abstract translation: 光信号发射器（10）包括用于产生载波波长的相干光发生器（12）和与光发生器的输出端耦合的调制装置（16,32）。 调制装置具有耦合在调制装置的输入端和输出端之间的光强度调制器（16）和光相位调制器（32）的串联布置。 强度调制器（16）具有用于由时钟发生器定义的预定数据速率的不归零（NRZ）数字信号的输入（26）。 相位调制器（32）具有与时钟发生器耦合的输入端，其以数据速率或以数据速率的偶数倍向相位调制器提供脉冲，但是相对于数据信号相移，使得每个 数字周期红移，另一端蓝移，便于检测。

公开(公告)号：WO1997023966A1

公开(公告)日：1997-07-03

申请号：PCT/GB1996003129

申请日：1996-12-19

Applicant: STC SUBMARINE SYSTEMS LIMITED ,  JONES, Kevan, Peter ,  SIMEONIDOU, Dimitra

Inventor： STC SUBMARINE SYSTEMS LIMITED

IPC: H04B10/18

CPC classification number: H04J14/0201 ,  G02B6/29394 ,  H04B10/2525

Abstract: A wavelength division multiplex transmission system has an optical fibre trunk (12) with one or more branching units (18) each providing an add/drop channel (22, 20). In the branch there is provided means (22) for pre-dispersing the wavelength of the add channel, prior to routing to the trunk (12), with a dispersion characteristic of opposite sign to the dispersion occurring in the trunk, thereby to compensate for dispersion of that wavelength occurring along the trunk.

Abstract translation: 波分复用传输系统具有一个具有一个或多个分支单元（18）的光纤干线（12），每个分支单元（18）分别提供一个分插通道（22,20）。 在分支中，提供了用于在路由到中继线（12）之前预分散加法信道的波长的装置（22），具有与发生在中继线中的色散相反的色散特性，从而补偿 该波长沿树干发生的分散。

公开(公告)号：WO1997006610A1

公开(公告)日：1997-02-20

申请号：PCT/GB1996001916

申请日：1996-08-07

Applicant: STC SUBMARINE SYSTEMS LIMITED ,  CRAMERI, Alan, Raymond ,  WALTERS, David, Lancelot

Inventor： STC SUBMARINE SYSTEMS LIMITED

IPC: H04B03/44

CPC classification number: H04B3/44

Abstract: A branching unit for an optical fibre cable system of the type which has an electrical power conductor for feeding current to electrical equipment provided along a main cable and a communication system and method of operating such a system. The branching unit (10) has first and second connections (12, 14) for coupling two sections of trunk cable (16, 18) and a third connection (24) for an optical fibre spur cable (26). A switch arrangement (RL1, RL2, D9, D10) is provided which is responsive to a control voltage provided on the conductor of the spur cable (26) to apply an earth (36) to the conductor of the trunk cable (16, 18). This maintains a current path in one trunk section when a failure or break occurs in the other trunk section.

Abstract translation: 一种用于光纤电缆系统的分支单元，其具有用于将电流馈送到沿着主电缆提供的电气设备的电力导体和通信系统以及操作该系统的方法。 分支单元（10）具有用于连接中继电缆（16,18）的两个部分和用于光纤支线（26）的第三连接（24）的第一和第二连接（12,14）。 提供开关装置（RL1，RL2，D9，D10），其响应于设置在所述辅助电缆（26）的导体上的控制电压，以将地线（36）施加到所述干线电缆（16,18）的导体 ）。 当另一个干线部分发生故障或中断时，这将维持一个中继线段中的当前路径。