N by N type optical diffuser and coupling network
    1.
    发明授权
    N by N type optical diffuser and coupling network 失效
    N型N型光扩散器和耦合网络

    公开(公告)号:US4867519A

    公开(公告)日:1989-09-19

    申请号:US288165

    申请日:1988-12-22

    IPC分类号: G02B6/28 H04Q3/52

    CPC分类号: G02B6/2804

    摘要: The diffuser is made from N=2.sup.n light ducts divided into two sets of 1/2N ducts, with every other duct belonging to a different one of the sets. The two sets of ducts are helically wound in opposite directions but at the same helical pitch over a cylinder (1). Each duct in either set crosses over the 1/2N ducts in the other set, and couplers are provided at those cross-overs between any given duct and the 1/2N ducts of the other set having cross-over numbers 2.sup.q, where q=0, 1, 2, . . . , (n-1). The diffuser has stages each comprising 1/2N couplers, with each stage being disposed in a ring around the cylinder.

    摘要翻译: 扩散器由分为两组1 / 2N导管的N = 2n个光导管制成,其他管道属于不同的一组。 两组导管在相反方向螺旋缠绕,但在圆柱体(1)上以相同的螺旋间距螺旋缠绕。 任一组中的每个管道跨越另一组中的1 / 2N管道,并且在任何给定管道和具有交叉数2q的另一组的1 / 2N管道之间的那些交叉处提供耦合器,其中q = 0,1,2,... 。 。 ,(n-1)。 扩散器具有各自包括1 / 2N耦合器的阶段,每个阶段围绕圆柱体设置在环中。

    Optical transmission network with a switching matrix
    4.
    发明授权
    Optical transmission network with a switching matrix 失效
    具有开关矩阵的光传输网络

    公开(公告)号:US5537239A

    公开(公告)日:1996-07-16

    申请号:US244624

    申请日:1994-06-03

    摘要: The network includes composite switching matrices (M1, M2, M3), each of which is split between a plurality of nodes (N1, N2, N3) of the network. The nodes are connected together via optical fibers (L3A3, L1A4) conveying wavelength multiplexes and included in the matrices. The matrices include emitters having staggered wavelengths (E2A1,1, . . . , E2A2,4), star couplers (C2A1, C2A2), controlled space-division switching matrices (X2A1, . . . , X2A4), and wavelength-controlled filters (F2A1,1, . . . , F2A4,4). The invention applies to telecommunications.

    摘要翻译: PCT No.PCT / FR93 / 01005 Sec。 371日期:1994年6月3日 102(e)1994年6月3日PCT 1993年10月11日PCT公布。 公开号WO94 / 09601 日期1994年04月28日。网络包括复合交换矩阵(M1,M2,M3),每个矩阵分别位于网络的多个节点(N1,N2,N3)之间。 节点通过传输波长多路复用并包含在矩阵中的光纤(L3A3,L1A4)连接在一起。 矩阵包括具有交错波长的发射器(E2A1,1,...,E2A2,4),星形耦合器(C2A1,C2A2),受控空分开关矩阵(X2A1,...,X2A4)和波长控制滤波器 (F2A1,1,...,F2A4,4)。 本发明适用于电信。

    Photonic switching matrix
    6.
    发明授权
    Photonic switching matrix 失效
    光子开关矩阵

    公开(公告)号:US5309266A

    公开(公告)日:1994-05-03

    申请号:US827168

    申请日:1992-01-28

    摘要: A photonic switching matrix comprises a plurality of wavelength converters at respective inputs of the matrix to assign a wavelength to each cell applied to an input of the matrix. An optical buffer common to all the outputs of the matrix stores each cell for a duration selectable between 0 and k.T.sub.c where k is an integer and T.sub.c is the duration of cell. A space routing stage comprises a filter for each output of the matrix passing to a given output only cells having a given wavelength. The converters and the buffer are controlled according to routing information indicating for each cell the output of the matrix to which said cell is addressed and for selecting the duration for which each cell is stored in the buffer so as to construct a queue for each output to avoid conflicts between two cells to be switched to the same output presented at the same time as the input of the switching matrix. The switching matrix has applications in telecommunication networks.

    摘要翻译: 光子切换矩阵包括在矩阵的相应输入处的多个波长转换器,以向施加到矩阵的输入的每个单元分配波长。 矩阵的所有输出共同的光学缓冲器存储每个单元,持续时间可在0和k.Tc之间选择,其中k是整数,Tc是单元的持续时间。 空间路由阶段包括用于矩阵的每个输出的滤波器,其传递给给定的输出,只有具有给定波长的单元。 转换器和缓冲器根据路由信息进行控制,路由信息为每个小区指示所述小区所寻址的矩阵的输出,并且用于选择每个小区存储在缓冲器中的持续时间,以便构建用于每个输出的队列 避免两个单元之间的冲突切换到与开关矩阵的输入同时呈现的相同输出。 交换矩阵在电信网络中有应用。

    Optical wavelength converter control method and device
    7.
    发明授权
    Optical wavelength converter control method and device 失效
    光波长转换器的控制方法和装置

    公开(公告)号:US5345455A

    公开(公告)日:1994-09-06

    申请号:US937499

    申请日:1992-08-28

    摘要: An optical wavelength converter has an optical signal input adapted to receive an optical signal whose wavelength is to be converted, an optical signal output adapted to emit an optical signal whose wavelength is the required wavelength, after conversion, and at least one control electrode for applying at least one electrical signal to control the wavelength of the output optical signal. The converter is controlled by a method which comprises a calibration phase for establishing a law linking at least one of said control electrical signals to said required output wavelength and storing said law in a storage device, and an operative phase for addressing said storage device using the required output wavelength and numerical-analog conversion of the data from the storage device addressed in this way for application to said control electrode(s).

    摘要翻译: 光波长转换器具有适于接收其波长将被转换的光信号的光信号输入,适于发射其波长为所需波长的光信号的光信号输出,转换后,以及至少一个用于施加的控制电极 至少一个电信号来控制输出光信号的波长。 转换器由一种方法控制,该方法包括用于建立将至少一个所述控制电信号与所述所需输出波长相关联并将所述定律存储在存储装置中的定律的校准相位,以及用于使用 所需的输出波长和来自存储设备的数据的数字 - 模拟转换以这种方式寻址以应用于所述控制电极。

    Photonic concentrator
    8.
    发明授权
    Photonic concentrator 失效
    光子聚光器

    公开(公告)号:US5325222A

    公开(公告)日:1994-06-28

    申请号:US826964

    申请日:1992-01-28

    摘要: A photonic concentrator is used to connect to a telecommunication network subscriber terminals sending and receiving data in the form of fixed length cells using asynchronous time-division multiplexing, in particular on an optical fiber. The concentrator comprises, for processing cells from a subscriber terminal, a time-division and non-synchronous statistical spectral multiplexing stage, a synchronization to a local clock stage, a spectral multiplexing and bit rate converter stage, and a periodic time-division multiplexing stage. To process cells addressed to subscriber terminals it comprises a periodic time-division demultiplexing, spectral multiplexing and bit rate adjuster stage, a bit rate converter stage and a spectral demultiplexing stage. The concentrator has applications in telecommunication networks.

    摘要翻译: 光子聚光器用于连接到电信网络用户终端,使用异步时分复用,特别是在光纤上,以固定长度小区的形式发送和接收数据。 集中器包括用于处理来自用户终端的小区,分时和非同步统计频谱复用级,与本地时钟级的同步,频谱复用和比特率转换器级以及周期性时分复用级 。 为了处理寻址到用户终端的小区,它包括周期性时分解复用,频谱复用和比特率调整器级,比特率转换器级和频谱解复用级。 集线器在电信网络中有应用。

    Methods of broadcasting and receiving high quality sound programs and a
receiver device
    9.
    发明授权
    Methods of broadcasting and receiving high quality sound programs and a receiver device 失效
    广播和接收高质量声音节目的方法和接收机设备

    公开(公告)号:US4723285A

    公开(公告)日:1988-02-02

    申请号:US738717

    申请日:1985-05-29

    申请人: Guy Le Roy Guy Onno

    发明人: Guy Le Roy Guy Onno

    摘要: A broadcast center delivers each program in digital form and assembles the digital signals of the programs to constitute a digital multiplex which is conveyed to reception points by radio links or by cables. A program is selected by searching for coinicidence between a user-specified number and a channel number in the digital multiplex. The receiver device comprises an input circuit (1), a synchronization word finding cirucit (2), a bit counter (4), a channel counter (5), a comparator (7), a keyboard (8), first (11) and second (10) registers, a parity check register (13), and a digital to analog converter (14).

    摘要翻译: 广播中心以数字形式传送每个节目,并组装节目的数字信号,构成通过无线电链路或电缆传送到接收点的数字多路复用。 通过在数字多路复用中搜索用户指定的号码和频道号之间的连贯性来选择节目。 接收机设备包括输入电路(1),同步字查找电路(2),位计数器(4),通道计数器(5),比较器(7),键盘(8),第一(11) 和第二(10)个寄存器,奇偶校验寄存器(13)和数模转换器(14)。

    Time-division multiplex switching circuitry

    公开(公告)号:US3999162A

    公开(公告)日:1976-12-21

    申请号:US181953

    申请日:1971-09-20

    申请人: Guy Le Roy

    发明人: Guy Le Roy

    摘要: Switching circuitry for transferring data from an input time-division multiplex system to an output time-division multiplex system includes a transfer circuit for temporarily storing the data received from the input-time-division multiplex system prior to its transfer to the output time-division multiplex system. For controlling the selective transfer of data from an input channel of the input time-division multiplex system to any one output channel of the output time-division multiplex system control circuitry is provided which controls the storage of the input channel data in a selected position of the transfer circuit with a timing corresponding to the respective time slots of the input channel and controls the transfer of that data from the selected position in the transfer circuit to the output time-division multiplex system with a timing corresponding to the respective time slot selected output channel. Write control circuitry stores in a write control memory the selected position in the transfer circuit in a word of the control memory corresponding to the time slot of the input channel in the input time-division multiplex system so that in response to time slots generated by an input time slot generator, the position address of the word in the control memory can be applied to the transfer circuit to control writing of data from the input channel into the transfer circuit in the position selected. Read control circuitry includes a read control memory wherein the selected position in the transfer circuit is stored in a word of that read control memory corresponding to the time slot of the output channel in the output time-division multiplex system so that data in the selected position of the tranfer circuit can be read out to the output time-division multiplex system at the proper time. The read and write control arrangements can also be constituted by elementary control memories connected to elementary inputs or outputs of the input and output multiplex circuitry.