公开(公告)号：EP0624011A1

公开(公告)日：1994-11-09

申请号：EP93201222.2

申请日：1993-04-27

申请人： ALCATEL BELL Naamloze Vennootschap ,  Alcatel SEL Aktiengesellschaft

发明人： Sierens, Christiaan Hendrik Jan ,  Van der Plas, Gert ,  Mestdagh, Denis Julien Gilles ,  Steigenberger, Ulrich ,  Berger, Werner ,  Harnisch, Stephen

IPC分类号： H04B10/18

CPC分类号： H04B10/25137

摘要： The compensation device is used in an optical network where signals are transmitted from a main station (M) to one or a plurality of user stations (US1 to US3). It compensates for analogue optical signal distortion caused by laser chirp of a laser in the main station (M) which generates said analogue optical signal and fiber dispersion of the fiber link over which the optical signal is transmitted.
The device includes a distance measuring device (R) generating a result signal (MS) indicative of the distance between the main station and the user stations and which is possibly already available in the network to perform ranging when the latter network is also used to transmit digital signals from the user stations to the main station using Time Division Multiple Access. It also includes a processing circuit (PC) which in response to a given laser chirp and the result signal, provides a tuning signal (V) to tune the bias voltage of a varactor diode (VD) which is part of the compensation circuit inserted in the electrical signal path.
In an optimal implementation the measuring device (R) and the processing circuit (PC) are located in the main station (M), whilst the varactor diode (VD) is located in each user station.

摘要翻译： 补偿装置用于从主站（M）向一个或多个用户站（US1至US3）发送信号的光网络。 它补偿由主站（M）中的激光啁啾引起的模拟光信号失真，其产生所述模拟光信号和光信号在其上传输的光纤链路的光纤色散。 该设备包括距离测量设备（R），其产生指示主站和用户站之间的距离的结果信号（MS），并且当后一网络也被用于发送时，网络中可能已经可用的执行测距 使用时分多路访问从用户站到主站的数字信号。 它还包括处理电路（PC），该处理电路响应于给定的激光啁啾和结果信号，提供调谐信号（V）以调节变容二极管（VD）的偏置电压，变容二极管（VD）是插入的补偿电路的一部分 电信号路径。 在最佳实现中，测量装置（R）和处理电路（PC）位于主站（M）中，而变容二极管（VD）位于每个用户站中。

公开(公告)号：EP0520127A1

公开(公告)日：1992-12-30

申请号：EP91870102.0

申请日：1991-06-28

申请人： ALCATEL BELL Naamloze Vennootschap ,  ALCATEL N.V.

发明人： Van der Plas, Gert ,  Reusens, Peter Paul Frans ,  Verbiest, Willem Jules Antoine ,  Mestdagh, Denis Julien Gilles ,  Sierens, Christiaan Hendrik Jozef

IPC分类号： H04L7/033

CPC分类号： H04L7/0338 ,  H04L7/044

摘要： The synchronizing arrangement synchronizes a digital data signal (Din) applied to its data input terminal (Din) with a local clock (CKin) applied to its clock input (CKin). It includes a tuned tapped delay line (TDL) where the local clock (CKin) is delayed, a sampling circuit (DR2,.,DR4) where the digital data signal is sampled using a number of delayed clock signals, a first processing circuit (P) where the middle of a 0 1 0 pattern included in the signal is determined, a second processing circuit P2 where the variation in time of that middle is determined and an output circuit where based on the mentioned middle and variation, one of the delayed clock signals is selected to read the digital data signal.
The tuned tapped delay line includes a tapped delay line and a feedback circuit at two inputs of which the input of the tuned tapped delay line and its 90 degrees tap are applied. The output of the feedback circuit is connected to a control input of the tapped delay line.

摘要翻译： 同步装置使应用于其数据输入端（Din）的数字数据信号（Din）与应用于其时钟输入（CKin）的本地时钟（CKin）同步。 它包括本地时钟（CKin）被延迟的调谐抽头延迟线（TDL），使用多个延迟的时钟信号对数字数据信号进行采样的采样电路（DR2，...，DR4），第一处理电路 P），其中确定包括在信号中的0 1 0模式的中间，确定中间时间变化的第二处理电路P2和基于所述中间和变化的输出电路，延迟 选择时钟信号来读取数字数据信号。 调谐抽头延迟线包括抽头延迟线和在两个输入处的反馈电路，其中施加调谐抽头延迟线的输入及其90度抽头。 反馈电路的输出连接到抽头延迟线的控制输入。

公开(公告)号：EP0765045A1

公开(公告)日：1997-03-26

申请号：EP95202553.4

申请日：1995-09-21

申请人： ALCATEL BELL Naamloze Vennootschap

发明人： Van de Voorde, Ingrid Zulma Benoit ,  Van der Plas, Gert

IPC分类号： H04B10/00 ,  H04B10/17 ,  H04B10/207

CPC分类号： H04B10/27 ,  H04B10/272 ,  H04B10/291 ,  H04B10/2933 ,  H04Q11/0067

摘要： The optical amplifier splitter arrangement is used in a tree-like optical network (APON) consisting of the cascade connection of dedicated branches, of the arrangement and of a common branch. The arrangement is coupled between a plurality of optical network users and an optical line terminator, via the dedicated branches and the common branch respectively. The network enables upstream transmission of information signals from the optical network users to the optical line terminator. The optical amplifier splitter arrangement includes for each branch of the dedicated branches :

an optical amplifier to amplify an information signal with a gain value and to thereby generate an amplified information signal with a predetermined power level;
an optical switch on/off coupled between the optical amplifier and an optical splitter to pass the amplified information signal when the information signal is present and to interrupt the branch when the information signal is not present. The optical splitter is included in the arrangement to combine all amplified information signals according to a multiple access technique and to thereby generate an outgoing optical signal for application to the optical line terminator.

摘要翻译： 光放大器分离器布置在一个共同的分支由......组成专用分支的级联连接的布置的，的树形光网络（APON）和使用。 该装置被连接在分别光线路终端的光网络的用户之间的多个和，经由专用支路和公共支路。 网络使从光网络用户到光线路终端机的信息信号的上行传输。 光放大器分离器布置包括用于将专用分支的每个分支：一个光放大器上的信息信号放大用的增益值，并由此在与预定的功率电平放大的信息信号生成; 光开关的接通/光放大器之间，并且光分路器断开联接到通过放大信息信号当信息信号存在和中断分支当信息信号不存在。 光分路器被包括在安排的所有放大信息信号gemäß结合的多址技术，并由此产生用于施加到所述光线路终端机的出射光信号。

公开(公告)号：EP0765047A1

公开(公告)日：1997-03-26

申请号：EP95202555.9

申请日：1995-09-22

申请人： ALCATEL BELL Naamloze Vennootschap

发明人： Van de Voorde, Ingrid Zulma Benoit ,  De Groote, Jan Lieven Bert ,  Van der Plas, Gert

IPC分类号： H04B10/207 ,  H04J3/06

CPC分类号： H04J3/0682 ,  H04L7/048 ,  H04L2012/561 ,  H04L2012/5616

摘要： The method is used in an optical transmission network with a plurality of terminal stations (TS1-TSn) connected to a central station (CS) via a tree-like connection structure, to determine a signal transmission delay time between one terminal station (TSi) and the central station. The terminal stations are adapted to send cells containing information signals to the central station in dedicated time slots. The method consists of sending a start signal (start CR) from the central station to the terminal station (TSi), sending a first predetermined time interval after the receipt of that start signal, a ranging signal from the terminal station to the central station, sending a second predetermined time interval after the sending of the start signal an inhibit signal from the central station to the terminal stations to indicate that no cells may be transmitted during an idle time window; deducing in the central station the signal transmission delay time from contents of the predetermined ranging signal received by the central station during the idle time window. The ranging signal either has an amplitude which is smaller than the infomation signals contained in the cells in order not to disturb the information signals when the ranging signal is transmitted outside the idle time window, or has a similar amplitude in which case error codes are included in the cells in order to recover possible disrupted cells.

摘要翻译： 该方法用于在光传输网络经由树形连接结构连接到一个中心站（CS）端子台的多个（TS1-TS n）时，确定性矿一个终端站之间的信号传送延迟时间（TSI） 和中心站。 终端站是angepasst发送包含信息信号，以在专用时隙中心站小区。 发送启动信号（启动CR）从中心站到终端站（TSI），发送一个第一预定时间间隔在收到之后的那样启动信号的方法besteht，从终端站向中心站的测距信号， 启动信号到从中央站抑制信号到终端站，以指示的发送之后，发送第二预定时间间隔并没有细胞可以是反式mitted到空闲时间窗口期间; 在中心站推断从空闲时间窗期间由中心站接收的预定测距信号的内容信号传输延迟时间。 测距信号要么具有幅度所有这比在为了不干扰信息信号。当测距信号是反式的空闲时间窗口之外mitted，或具有在此情况下，错误代码包含一个类似的振幅包含在细胞中的信息来源信号小 在细胞内，以恢复可能受到破坏的细胞。

公开(公告)号：EP0548409A1

公开(公告)日：1993-06-30

申请号：EP91203369.3

申请日：1991-12-23

申请人： ALCATEL BELL Naamloze Vennootschap ,  ALCATEL N.V.

发明人： Van de Voorde, Ingrid Zulma Benoit ,  Mestdagh, Denis Julien Gilles ,  Van der Plas, Gert ,  Sierens, Christiaan Hendrik Jozef ,  Verbiest, Willem Jules Antoine

IPC分类号： H04B10/24

CPC分类号： H04B10/2503

摘要： The system includes two transmitters (T1, T2) and two receivers (R1, R2). One transmitter (T1) includes a wavelength tunable laser, sending an FSK optical signal (OS1) which has a constant intensity. In a first receiver (R1) this FSK optical signal (OS1) is transformed into an IM signal (OS1') by an optical pass band filter. This IM signal (OS1') is then detected by a first direct detection receiver (DM). In a second direct detection receiver (R2) the FSK optical signal (OS2) is not detected, since it has constant intensity. A second transmitter (T2) includes a Fabry Perot laser or a LED with a broad linewidth, sending an IM optical signal (OS2). This IM optical signal (OS2) is detected by the second direct detection receiver (R2). It is not detected by the first direct detection receiver (DM), because it is strongly attenuated when passing through the narrow bandpass optical filter (TM) before being applied to the first direct detection receiver. This system is especially advantageous in bidirectional optical transmission systems, due to its inherent insensitivity for reflections.

摘要翻译： 该系统包括两个发射器（T1，T2）和两个接收器（R1，R2）。 一个发射器（T1）包括波长可调激光器，发送具有恒定强度的FSK光信号（OS1）。 在第一个接收器（R1）中，这个FSK光信号（OS1）被一个光学通带滤波器转换成一个IM信号（OS1'）。 该IM信号（OS1'）然后由第一直接检测接收器（DM）检测。 在第二个直接检测接收器（R2）中，由于FSK光信号（OS2）具有恒定的强度，所以不检测FSK光信号（OS2）。 第二发射器（T2）包括法布里珀罗激光器或具有宽线宽的LED，发送IM光信号（OS2）。 该IM光信号（OS2）由第二直接检测接收器（R2）检测。 它不被第一直接检测接收机（DM）检测到，因为它在被施加到第一直接检测接收机之前在通过窄带通滤光器（TM）时被强烈衰减。 由于其对反射的固有不敏感性，该系统在双向光传输系统中特别有利。