Light amplifier device
    2.
    发明授权
    Light amplifier device 失效
    光放大器装置

    公开(公告)号:US06473225B1

    公开(公告)日:2002-10-29

    申请号:US09791606

    申请日:2001-02-26

    IPC分类号: H01S300

    摘要: In order to be able to use a semiconductor light amplifier of conventional type and operating under gain saturation conditions while nevertheless providing constant gain for an optical signal to be amplified, the device comprises means for producing a compensation light wave and coupling means for injecting the optical signal to be amplified and the compensation light wave into the amplifier. The compensation light wave presents amplitude modulation such that when combined with the optical signal to be amplified the overall amplitude modulation is eliminated or at least attenuated. The device is applicable to optical transmission systems operating at a single wavelength or with wavelength division multiplexing.

    摘要翻译: 为了能够使用常规类型的半导体光放大器并在增益饱和条件下工作,同时为要放大的光信号提供恒定的增益,该器件包括用于产生补偿光波的装置和用于注入光学器件的耦合装置 信号被放大,补偿光波进入放大器。 补偿光波呈现幅度调制,使得当与要放大的光信号组合时,整体幅度调制被消除或至少衰减。 该器件适用于以单波长或波分复用工作的光传输系统。

    Ring optical transmission network access node
    3.
    发明授权
    Ring optical transmission network access node 有权
    环形光传输网络接入节点

    公开(公告)号:US07672588B2

    公开(公告)日:2010-03-02

    申请号:US11614054

    申请日:2006-12-20

    IPC分类号: H04B10/20 G02F1/00

    摘要: A ring optical transmission network access node (ANi) comprises: two identical band splitters (BSa, BSb), each provided with homologous first, second and third ports (Ba, BWa, BPa; Bb, BWb, BPb), a first coupler (CW) coupling the second port (BWb) of the second splitter (BSb), on the one hand, to the second port (BWa) of the first splitter (BSa) via a first channel and, on the other hand, to an access point (A2) via a second channel, a second coupler (CP) coupling the third port (BPa) of the first splitter (BSa), on the one hand, to the third port (BPb) of the second band splitter (BSb) via a first channel and, on the other hand, to another access point (A1) via a second channel. Such nodes enable the implementation of a passive ring network comprising only one fiber and in which the coupling ratios of the couplers (CW, CP) are optimized for two opposite traffic propagation directions.Application in particular to optical fiber metropolitan access networks, with broken fiber protection device.

    摘要翻译: 环形光传输网络接入节点(ANi)包括:两个相同的频带分离器(BSa,BSb),每个具有同源的第一,第二和第三端口(Ba,BWa,BPa; Bb,BWb,BPb),第一耦合器 CW)一方面将第二分离器(BSb)的第二端口(BWb)经由第一通道耦合到第一分离器(BSa)的第二端口(BWa),另一方面将接口 (A2),耦合第一分离器(BSa)的第三端口(BPa)的第二耦合器(CP)一方面耦合到第二分束器(BSb)的第三端口(BPb) 另一方面,经由第一通道,经由第二通道进入另一接入点(A1)。 这样的节点使得能够实现仅包括一个光纤的无源环网络,并且耦合器(CW,CP)的耦合比率针对两个相反的业务传播方向被优化。 特别适用于光纤大都市接入网,具有断线保护装置。

    D(WDM) communications network employing periodic spectral multiplex processing
    4.
    发明授权
    D(WDM) communications network employing periodic spectral multiplex processing 有权
    D(WDM)通信网络采用周期性频谱复用处理

    公开(公告)号:US07551855B2

    公开(公告)日:2009-06-23

    申请号:US11271842

    申请日:2005-11-14

    IPC分类号: H04J14/00 H04J14/02

    摘要: A WDM network (R) comprises an optical fiber (F) connected to a hub (H) via an input of a demultiplexer (DX) having N outputs to communications stations (Si-Sn) able to deliver and/or receive spectral multiplexes of modulated optical signals with different wavelengths, via coupling means (CP, CP′, MXB). The communications stations (Sn−1) are adapted to deliver spectral multiplexes of modulated optical signals from a given one of P disjoint bands of wavelengths. At least one of the coupling means (MXB) is a 2×1 band multiplexer comprising i) an output connected to a downstream portion of the optical fiber (F), ii) a first input connected to one of the stations (then referred to as the “primary” station) and adapted to its band of wavelengths, and iii) a second input connected to an upstream portion of the optical fiber (F) and adapted to channels having wavelengths different from those of the channels passing through the first input. The demultiplexer (DX) is of periodic type so as to deliver at each of its N outputs channels whose wavelengths belong to distinct sets of P wavelengths each belonging to a distinct one of the P disjoint bands.

    摘要翻译: WDM网络(R)包括通过具有N个输出的多路分解器(DX)的输入连接到集线器(H)的光纤(F)到能够传送和/或接收频谱复用的通信站(Si-Sn) 通过耦合装置(CP,CP',MXB)调制具有不同波长的光信号。 通信站(Sn-1)适于从P个不相交的波长带中的给定的一个传送经调制的光信号的频谱复用。 耦合装置(MXB)中的至少一个是2x1波段多路复用器,包括i)连接到光纤(F)的下游部分的输出,ii)连接到一个站(之后称为 “主”站)并适应其波长带,以及iii)连接到光纤(F)的上游部分的第二输入,并且适于具有与通过第一输入的信道的波长不同的波长的信道。 多路分解器(DX)是周期性的,以便在其N个输出通道中的每个输出通道,其波长属于不同的P个波长组,每个属于P个不相交频带中的不同的一个。