公开(公告)号：WO1995023997A1

公开(公告)日：1995-09-08

申请号：PCT/GB1995000425

申请日：1995-02-28

Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY ,  NESSET, Derek ,  COTTER, David ,  TATHAM, Martin, Christopher

Inventor： BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

IPC: G02F03/00

CPC classification number: G02F3/00

Abstract: An optical AND gate includes at least one semiconductor laser amplifier (SLA) and inputs for first and second optical signals (A, B). The gate produces an output corresponding to the AND product of A and B. In one aspect of the invention, the first and second signals (A, B) are equal in wavelength. The gate may comprise a single SLA which receives the first signal A together with a third signal P, which may be a continuous wave pump. The second signal B is input in an orthogonal polarisation state to A and P. Alternatively, the gate may comprise a pair of SLAs. A first SLA receives the first signal A together with the pump P. A sideband is selected from the output of the first SLA and input to the second SLA together with the second signal B. A sideband is selected from the output of the second SLA corresponding to the AND product C of A and P with B.

Abstract translation: 光学与门包括至少一个半导体激光放大器（SLA）和用于第一和第二光信号（A，B）的输入。 门产生对应于A和B的AND乘积的输出。在本发明的一个方面，第一和第二信号（A，B）的波长相等。 门可以包括单个SLA，其接收第一信号A以及可以是连续波泵的第三信号P. 第二信号B以正交极化状态输入到A和P.或者，门可以包括一对SLA。 第一SLA与泵P一起接收第一信号A.从第一SLA的输出中选择边带并与第二信号B一起输入到第二SLA。从相应的第二SLA的输出中选择边带 A和P与B的AND产物C。

公开(公告)号：WO9533324A3

公开(公告)日：1996-04-04

申请号：PCT/GB9501176

申请日：1995-05-23

Applicant: BRITISH TELECOMM ,  COTTER DAVID ,  TATHAM MARTIN CHRISTOPHER

Inventor： COTTER DAVID ,  TATHAM MARTIN CHRISTOPHER

IPC: H04B10/299 ,  H04J14/08 ,  H04L7/00 ,  H04L7/04 ,  H04L7/10 ,  H04L12/28 ,  H04L12/42 ,  H04L12/56 ,  H04Q3/00 ,  H04Q3/52 ,  H04Q11/00

CPC classification number: H04B10/299 ,  H04J14/08 ,  H04L7/0075 ,  H04L7/041 ,  H04L12/2852 ,  H04Q11/0062 ,  H04Q11/0066 ,  H04Q2011/0013 ,  H04Q2011/002 ,  H04Q2011/0033 ,  H04Q2011/0035 ,  H04Q2011/0039 ,  H04Q2011/0041 ,  H04Q2011/0045 ,  H04Q2011/0092

Abstract: A packet carried on an optical network is routed by carrying out a logic operation on an address word carried in a packet header, and a predetermined discriminator word. A binary routing decision is made in accordance with the product of the logic operation. The operation may be a bit-wise Boolean AND operation. An additional logic operation may be carried out with an additional discriminator word to determine whether the packet is destined for a remoter region of the network. In this case the packet may be steered directly to the remote region.

公开(公告)号：WO1995033324A2

公开(公告)日：1995-12-07

申请号：PCT/GB1995001176

申请日：1995-05-23

Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY ,  COTTER, David ,  TATHAM, Martin, Christopher

Inventor： BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

IPC: H04L12/56

CPC classification number: H04B10/299 ,  H04J14/08 ,  H04L7/0075 ,  H04L7/041 ,  H04L12/2852 ,  H04Q11/0062 ,  H04Q11/0066 ,  H04Q2011/0013 ,  H04Q2011/002 ,  H04Q2011/0033 ,  H04Q2011/0035 ,  H04Q2011/0039 ,  H04Q2011/0041 ,  H04Q2011/0045 ,  H04Q2011/0092

Abstract: A packet carried on an optical network is routed by carrying out a logic operation on an address word carried in a packet header, and a predetermined discriminator word. A binary routing decision is made in accordance with the product of the logic operation. The operation may be a bit-wise Boolean AND operation. An additional logic operation may be carried out with an additional discriminator word to determine whether the packet is destined for a remoter region of the network. In this case the packet may be steered directly to the remote region.

Abstract translation: 通过对分组报头中携带的地址字和预定的鉴别字进行逻辑运算来路由在光网络上承载的分组。 根据逻辑运算的乘积进行二进制路由决策。 该操作可能是一个有点位的布尔AND运算。 附加的逻辑操作可以用附加的鉴别字来执行，以确定分组是否发往网络的远程区域。 在这种情况下，数据包可以直接转向远程区域。

公开(公告)号：WO1997005725A1

公开(公告)日：1997-02-13

申请号：PCT/GB1996001823

申请日：1996-07-26

Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY ,  COTTER, David ,  TATHAM, Martin, Christopher

Inventor： BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

IPC: H04L12/56

CPC classification number: H04Q11/0062 ,  H04L45/06 ,  H04L45/34 ,  H04Q11/0066 ,  H04Q2011/0041 ,  H04Q2011/009

Abstract: In a method of routing a packet carried on a network having a generally regular topology, the packet is received at a node (N) where a local routing decision is made. The packet is output in a direction selected according to the routing decision. The packet carries in addition to a destination address a directional flag indicating explicitly the preferred direction of onward travel and the routing decision is made using this flag. Several flags may be used, corresponding to different dimensions of the network.

Abstract translation: 在具有通常规则拓扑的网络上承载的分组的方法中，在进行本地路由决定的节点（N）处接收分组。 该分组在根据路由决定选择的方向上输出。 该分组除了目的地地址之外还携带方向标志，其明确地指示了向前行进的优选方向，并且使用该标志进行路由决定。 可以使用几个标志，对应于网络的不同维度。

公开(公告)号：WO1995003653A1

公开(公告)日：1995-02-02

申请号：PCT/GB1994000602

申请日：1994-03-23

Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY ,  TATHAM, Martin, Christopher ,  SHERLOCK, Gerard

Inventor： BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

IPC: H04B10/18

CPC classification number: H04B10/2531 ,  H01S5/50 ,  H01S5/5054 ,  H04B10/2914

Abstract: A method of compensating for dispersion in an optical communications system, the method comprising the steps of: positioning a semiconductor optical amplifier between a first and a second length of optical fibre, launching optical signals into the first length of optical fibre, directing optical signals emerging from the first length of optical fibre into the semiconductor optical amplifier, supplying optical pump radiation to the semiconductor optical amplifier so that the optical signals and the pump radiation interact within the semiconductor optical amplifier and generate the phase conjugate of the optical signals, and launching the phase conjugate optical signals into the second length of optical fibre.

Abstract translation: 一种补偿光通信系统中的色散的方法，所述方法包括以下步骤：在第一和第二长度的光纤之间定位半导体光放大器，将光信号发射到第一长度的光纤中，引导光信号出现 从光纤的第一长度到半导体光放大器，向半导体光放大器提供光泵辐射，使得光信号和泵辐射在半导体光放大器内相互作用，并产生光信号的相位共轭，并发射 相位共轭光信号转换成第二长度的光纤。