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公开(公告)号：US06625340B1
公开(公告)日：2003-09-23
申请号：US09474544
申请日：1999-12-29
IPC分类号： G02B626
CPC分类号： G02B6/3588 , G02B6/266 , G02B6/3512 , G02B6/356 , G02B6/3594 , G02B6/424
摘要： An optical switch comprising switching means arranged to switch an optical signal by redirection of the optical beam path of said signal, wherein said optical switch is arranged to misalign the optical beam path so as to provide a predetermined optical output power. Thus a switch can be directly used to attenuate a signal, instead of utilising separate attenuators.
摘要翻译： 一种光开关，包括用于通过重定向所述信号的光束路径来切换光信号的开关装置，其中所述光开关被布置成使光束路径偏移以便提供预定的光输出功率。 因此，可以直接使用开关来衰减信号，而不是使用单独的衰减器。
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公开(公告)号：US07471903B1
公开(公告)日：2008-12-30
申请号：US10180595
申请日：2002-06-26
IPC分类号： H04B10/04
CPC分类号： H04B10/5161 , H04B10/541 , H04B10/5561 , H04B10/61 , H04B10/6161 , H04B10/6163 , H04B10/63
摘要： An optical communications system has a transmitter which uses modulation using multiple level phase and/or amplitude modulation, and is adaptable to provide modulation for different signals using different selections of the multiple levels. A receiver is able to perform demodulation from the multiple level phase and/or amplitude modulation, and is adaptable to provide demodulation of signals modulated using the different selections of the multiple levels. This provides an adaptive modulation system, so that different bit rates can be employed for different links.
摘要翻译： 光通信系统具有使用多电平相位和/或幅度调制的调制的发射机，并且可适应于使用多个等级的不同选择为不同信号提供调制。 接收机能够从多电平相位和/或幅度调制执行解调，并且适于提供使用多个电平的不同选择调制的信号的解调。 这提供了自适应调制系统，使得不同的比特率可以用于不同的链路。
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公开(公告)号：US20070166039A1
公开(公告)日：2007-07-19
申请号：US11327020
申请日：2006-01-06
IPC分类号： H04J14/02
CPC分类号： H04B10/2513 , H04B10/25137 , H04B10/506 , H04J14/0227
摘要： A wavelength division multiplex integrated optical transmitter and optical transmission system employing narrow band filters to dramatically improve tolerance to chromatic dispersion and thereby enable increased reach and/or data rates and a method of offering a communication service using such a transmitter or system.
摘要翻译： 一种使用窄带滤波器的波分复用集成光发射机和光传输系统，以显着提高对色散的容忍度，从而实现增加的接近和/或数据速率，以及使用这种发射机或系统提供通信服务的方法。
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公开(公告)号：US06643059B1
公开(公告)日：2003-11-04
申请号：US10008082
申请日：2001-11-02
申请人： Michael F Grant , Robert Spagnoletti , Stephen Day
发明人： Michael F Grant , Robert Spagnoletti , Stephen Day
IPC分类号： H04J1402
CPC分类号： G02B6/12019 , H01S3/06754 , H01S3/094003 , H01S3/09408 , H01S3/094096 , H01S3/10015 , H01S3/2391
摘要： An optical array amplifier has a first light beam shaper, a first waveguide to guide an input optical signal consisting of a plurality of wavelengths to the first beam shaper, a diffracter illuminated by light from the first beam shaper to diffract the optical signal into individual wavelengths or groups of wavelengths, a second waveguide connected to a source of optical pump energy, a second beam shaper combining optical pump energy from the second waveguide with the diffracted signal wavelengths or groups of wavelengths without the pump energy impinging on the diffracter, so that a proportion of the optical pump energy is mixed with each of the wavelengths or groups of wavelengths, and to focus the mixed optical signals onto a third waveguide connected to an optical amplifier utilizing the pump energy to cause amplification of the individual wavelengths or groups of wavelengths mixed with the corresponding proportion of pump energy. The amplifier may be implemented as a planar waveguide device. Optical attenuators connected to the outputs of the device may be controlled in dependence on the amplitude of the signals. The amplitude and/or phase of the pumping energy may also be dependent on the amplitude of the signals.
摘要翻译： 光学阵列放大器具有第一光束整形器，第一波导，用于将由多个波长组成的输入光信号引导到第一光束整形器，由来自第一光束整形器的光照射的衍射光以将光信号衍射成单个波长 或一组波长，连接到光泵浦能量源的第二波导，将来自第二波导的光泵浦能量与衍射信号波长或波长组合的第二波束整形器，而没有泵浦能量撞击在差速器上，使得 将光泵浦能量的比例与波长或波长组合中的每一个混合，并且利用泵浦能量将混合的光信号聚焦到连接到光放大器的第三波导上，以引起单个波长或波长组合的混合 具有相应比例的泵浦能量。 放大器可以被实现为平面波导器件。 可以根据信号的幅度来控制连接到装置的输出的光衰减器。 泵浦能量的幅度和/或相位也可以取决于信号的振幅。
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公开(公告)号：US06496626B2
公开(公告)日：2002-12-17
申请号：US09745887
申请日：2000-12-21
申请人： Robert Spagnoletti , Julian Fells , Ian Hardcastle , Garry Adams
发明人： Robert Spagnoletti , Julian Fells , Ian Hardcastle , Garry Adams
IPC分类号： G02B650
CPC分类号： H02G15/14 , Y10T307/50 , Y10T307/74
摘要： An underwater telecommunications system has a first underwater cable for carrying data traffic, one or more underwater repeaters, and an underwater power network for supplying power to the repeaters. By providing a separate cable for some or all of the power supply, the power route may be made shorter, thus more power can be delivered, therefore more repeaters can be used, which enables more fiber pairs to be laid, and thus the capacity to be increased.
摘要翻译： 水下通信系统具有用于承载数据业务的第一水下电缆，一个或多个水下中继器和用于向中继器供电的水下电力网络。 通过为一些或所有电源提供单独的电缆，可以使电源路由更短，从而可以传送更多的功率，因此可以使用更多的中继器，这使得能够铺设更多的光纤对，并且因此能够 增加。
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公开(公告)号：US06400861B1
公开(公告)日：2002-06-04
申请号：US09559854
申请日：2000-04-27
申请人： Duncan J Forbes , Robert Spagnoletti , Nigel Baker
发明人： Duncan J Forbes , Robert Spagnoletti , Nigel Baker
IPC分类号： H04J1402
CPC分类号： H04J14/02
摘要： Wave division multiplexers and demultiplexers utilizing fused fiber couplers and similar devices are expensive to implement. This is a barrier to deployment of optical networks particularly in the metro and access areas. The invention provides a cheaper design scheme to help overcome this problem. The invention provides an apparatus arranged to demultiplex a predetermined range and number of wavelengths comprising a plurality of devices each having at least one input port and two output ports, the output ports of each device having a periodic and complimentary series of minimum attenuation wavelength peaks, wherein the devices are arranged such that each demultiplexes a unique series of wavelengths, and wherein the apparatus comprises at least one device having a series of minimum attenuation wavelength peaks which do not correspond to the unique series of wavelengths the device is arranged to demultiplex.
摘要翻译： 使用融合光纤耦合器和类似器件的波分复用器和解复用器实现昂贵。 这是部署光网络的障碍，特别是在地铁和接入区域。 本发明提供了一种更便宜的设计方案来帮助克服这个问题。 本发明提供了一种设备，用于对包括多个装置的预定范围和数量的波长进行解复用，每个装置具有至少一个输入端口和两个输出端口，每个装置的输出端口具有周期性和互补的一系列最小衰减波长峰值， 其中所述装置被布置为使得每个多路复用唯一的一系列波长，并且其中所述装置包括至少一个具有一系列最小衰减波长峰值的装置，所述最小衰减波长峰值不对应于所述装置被布置为解复用的唯一波长序列。
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公开(公告)号：US06192173B1
公开(公告)日：2001-02-20
申请号：US09324124
申请日：1999-06-02
IPC分类号： G02B628
CPC分类号： H04J14/0221 , H04J14/0219
摘要： A unidirectional or bidirectional node for use in an optical communications network, a network consisting of such nodes and a method of maintaining a target loss around a ring. The node comprises one or more optical couplers as well as either or both of drop circuitry connected to an output port and add circuitry connected to an input port. This allows for changes to the wavelength plan without interruption of the ring traffic. If add circuitry is used, the wavelengths in the filtered add signal should be distinct from those of the incoming signal on the main optical path which is merged with the add signal. When separate fibers are used for transmitting and receiving data between a hub and nodes in a ring, the through loss of the couplers is reduced for upstream couplers, which increases the available loss to be assigned to the fiber. The method of maintaining a target loss around a ring relies on the known through loss of the coupler at each node to set the gain of an amplifier connected to the node.
摘要翻译： 用于光通信网络中的单向或双向节点，由这种节点组成的网络以及围绕环路维持目标损耗的方法。 节点包括一个或多个光耦合器以及连接到输出端口的分路电路中的一个或两个，并且添加连接到输入端口的电路。 这允许波长计划的更改，而不会中断环网流量。 如果使用加法电路，滤波后的加法信号中的波长应与主光路上与加法信号合并的输入信号的波长不同。 当单独的光纤用于在一个环中的一个集线器和节点之间发送和接收数据时，上游耦合器的耦合器的通过损耗减少，这增加了分配给光纤的可用损耗。 在环周围保持目标损耗的方法依赖于每个节点处耦合器已知的通过损耗来设置连接到该节点的放大器的增益。
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