公开(公告)号：US06236495B1

公开(公告)日：2001-05-22

申请号：US09167867

申请日：1998-10-07

申请人： Lothar Benedict Erhard Josef Moeller

发明人： Lothar Benedict Erhard Josef Moeller

IPC分类号： G02B625

CPC分类号： H04B10/2525

摘要： The present invention relates generally to the field of optical communication and particularly to optical communication techniques which compensated for dispersion such as that in optical fibers. Compensation of optical dispersion is achieved with a polarization beam splitter with first, second and third ports, a dispersion compensating fiber, a first return means that changes the mode of polarization of a returned signal and a second return means. One end of the dispersion compensation means is connected to the third port of the polarization beam splitter, the other end is connected to the first return means. The second return means is connected with the second port of the polarization beam splitter, while the first port of the polarization beam splitter forms input and output. As the signal passes through the dispersion compensating fiber four times, the length of the dispersion compensating fiber can be greatly reduced.

摘要翻译： 本发明一般涉及光通信领域，特别涉及补偿如光纤中的色散的光通信技术。 通过具有第一，第二和第三端口的偏振分束器实现光学色散的补偿，色散补偿光纤，改变返回信号的偏振模式的第一返回装置和第二返回装置。 色散补偿装置的一端连接到偏振分束器的第三端口，另一端连接到第一返回装置。 第二返回装置与偏振分束器的第二端口连接，而偏振分束器的第一端口形成输入和输出。 随着信号通过色散补偿光纤四次，色散补偿光纤的长度可以大大降低。

公开(公告)号：US08639127B2

公开(公告)日：2014-01-28

申请号：US10349837

申请日：2003-01-23

申请人： Lothar Benedict Erhard Josef Moeller

发明人： Lothar Benedict Erhard Josef Moeller

IPC分类号： H04B10/00

CPC分类号： H04B10/671

摘要： We demonstrate a novel type of data receiver, which has superior performance compared to a standard receiver when an input signal is distorted by timing jitter. A method and apparatus for improved timing jitter tolerance includes sampling an input signal more than once within a bit slot of the input signal and determining, using logic circuitry, from a combination of at least a subset of the samples, a resulting logic state for an output signal.

摘要翻译： 我们展示了一种新型的数据接收机，当输入信号由定时抖动失真时，它与标准接收机相比具有出色的性能。 用于改进定时抖动容限的方法和装置包括在输入信号的位时隙内多次对输入信号进行采样，并且使用逻辑电路从至少样本的一个子集的组合中确定一个结果的逻辑状态， 输出信号。

公开(公告)号：US07929580B2

公开(公告)日：2011-04-19

申请号：US11525787

申请日：2006-09-22

申请人： Lothar Benedict Erhard Josef Moeller

发明人： Lothar Benedict Erhard Josef Moeller

IPC分类号： H01S3/098

CPC分类号： G01N21/3581

摘要： Pulses of signals in the terahertz region are generated using an apparatus made up of a mode-locked semiconductor laser diode with a short duty cycle that is optically coupled to a biased Auston switch. The output from the mode-locked semiconductor laser diode may first be supplied to a pulse compressor, and the resulting compressed pulses supplied to the Auston switch. Preferably, the mode-locking of the semiconductor laser diode is controllable, i.e., it is an active mode-locking semiconductor laser, so that the phase of the output optical signal from the laser is locked to the phase of an input control signal.

摘要翻译： 使用由与偏置的Auston开关光学耦合的具有短占空比的锁模半导体激光二极管构成的装置来产生太赫兹区域中的信号脉冲。 模式锁定半导体激光二极管的输出可以首先被提供给脉冲压缩器，并将所产生的压缩脉冲提供给奥斯顿开关。 优选地，半导体激光二极管的锁模可控，即它是主动锁模半导体激光器，使得来自激光器的输出光信号的相位被锁定到输入控制信号的相位。

公开(公告)号：US07254343B2

公开(公告)日：2007-08-07

申请号：US10424964

申请日：2003-04-28

申请人： Zheng Gu ,  Lothar Benedict Erhard Josef Moeller ,  Andreas Thiede

发明人： Zheng Gu ,  Lothar Benedict Erhard Josef Moeller ,  Andreas Thiede

IPC分类号： H04B10/00

CPC分类号： H04B10/2507

摘要： Method and apparatus for reducing intra-channel distortions of received data resulting from non-linear signal propagation includes parallel detection subcircuits for determining output values of sequentially provided optical data bits such that each of the sequentially provided optical data bits is processed by only one of the parallel detection subcircuits. Two parallel detection subcircuits process the input optical data bits according to even valued and odd valued clock signals. Each subcircuit has first and second signal analyzers to detect the value of the input optical data bit and a first memory unit and a second memory unit connected to the first and second signal analyzers. The input value of clock information provided to the first and second memory units of the first parallel subcircuit are 180° out of phase with input values indicative of a clock speed provided to the second parallel subcircuit.

摘要翻译： 用于减少由非线性信号传播引起的接收数据的通道内失真的方法和装置包括用于确定顺序提供的光数据位的输出值的并行检测子电路，使得每个顺序提供的光数据位仅由 并行检测子电路。 两个并行检测分支电路根据偶数和奇数值的时钟信号处理输入光数据位。 每个子电路具有第一和第二信号分析器以检测输入光学数据位的值，以及连接到第一和第二信号分析器的第一存储器单元和第二存储器单元。 提供给第一并行子电路的第一和第二存储器单元的时钟信息的输入值与指示提供给第二并行子电路的时钟速度的输入值相差180°。

公开(公告)号：US06456408B1

公开(公告)日：2002-09-24

申请号：US09273949

申请日：1999-03-22

申请人： Lothar Benedict Erhard Josef Moeller

发明人： Lothar Benedict Erhard Josef Moeller

IPC分类号： H04J1402

CPC分类号： H04B10/296 ,  H04B10/564 ,  H04J14/0221

摘要： The present invention generally relates to the field of optical transmission and particularly to a method and an apparatus for controlling the optical power of an optical transmission signal in wavelength division multiplex optical transmission system (WDM system). It is known to add one additional channel to the optical transmission signal of WDM systems, for controlling the power of the optical transmission signal. The optical power of the control channel is controlled to keep the total optical power of the optical transmission signal constant, e.g., if a channel of the optical transmission signal fails, the optical power of the control channel is increased. To change the optical power of the control channel usually the injection current of a laser which generates the control channel is changed as the laser is operated in the continuous wave mode. This causes the disadvantage of cross talk which influences the optical transmission signal. The present invention avoids this disadvantage by adding an optical control signal having a fixed optical peak power level. The necessary variations of the average optical power of the control signal are effected by adjusting the period and/or the pulse width of the optical control signal. The mean optical power of the optical control signal resulting from the fixed optical power level, the period and the pulse width is compensating the variations in the optical power of the optical transmission signal.

摘要翻译： 本发明一般涉及光传输领域，特别涉及用于在波分复用光传输系统（WDM系统）中控制光传输信号的光功率的方法和装置。 已知为WDM系统的光传输信号添加一个附加信道，用于控制光传输信号的功率。 控制信道的光功率被控制以保持光传输信号的总光功率恒定，例如，如果光传输信号的信道出现故障，则控制信道的光功率增加。 为了改变控制通道的光功率，通常在激光以连续波模式操作时改变产生控制通道的激光器的注入电流。 这导致影响光传输信号的串扰的缺点。 本发明通过添加具有固定的光峰值功率电平的光控制信号来避免这个缺点。 通过调整光控制信号的周期和/或脉冲宽度来实现控制信号的平均光功率的必要变化。 由固定光功率电平，周期和脉冲宽度产生的光控制信号的平均光功率补偿了光传输信号的光功率的变化。