公开(公告)号：US6002816A

公开(公告)日：1999-12-14

申请号：US977494

申请日：1997-11-24

申请人： Denis Penninckx ,  Philippe Delansay

发明人： Denis Penninckx ,  Philippe Delansay

IPC分类号： G02F1/015 ,  G02F1/025 ,  G02F1/225 ,  H04B10/02 ,  H04B10/18 ,  H04B10/28 ,  G02B6/26

CPC分类号： H04B10/25137 ,  G02F1/2257

摘要： In order to increase the distance over which binary data can be transmitted over an optical fiber, the device compensates for fiber-generated chromatic dispersion by modulating the emitted light wave both in power and in phase, in such a manner as to ensure that there is a phase shift of close to 180.degree. within each binary cell for which the optical power is low but not zero. The device comprises a Mach-Zehnder type interferometer made on a substrate of III-V elements and designed so that in the absence of electrical voltages being applied to its electrodes it establishes destructive interference. A control circuit applies control voltages to the electrodes which voltages have DC components that are substantially equal, with at least one of the control voltages being the result of superposing a bias voltage on a filtered signal obtained by lowpass filtering an input electrical signal. The invention is applicable to long distance transmission over standard optical fibers.

摘要翻译： 为了增加通过光纤传输二进制数据的距离，该装置通过在功率和相位上调制发射的光波来补偿光纤产生的色散，以确保存在 在光功率低但不为零的每个二进制单元内的相移接近180°。 该装置包括在III-V族元件的衬底上制造的马赫 - 曾德尔型干涉仪，其设计使得在没有施加到其电极上的电压的情况下，其建立破坏性干扰。 控制电路向电极施加控制电压，电压具有基本相等的DC分量，其中至少一个控制电压是通过对输入电信号进行低通滤波获得的滤波信号叠加偏置电压的结果。 本发明适用于通过标准光纤的长距离传输。