公开(公告)号：US07639955B2

公开(公告)日：2009-12-29

申请号：US11447662

申请日：2006-06-06

申请人： Xueyan Zheng ,  Yasuhiro Matsui ,  Daniel Mahgerefteh ,  Parviz Tayebati

发明人： Xueyan Zheng ,  Yasuhiro Matsui ,  Daniel Mahgerefteh ,  Parviz Tayebati

IPC分类号： H04B10/06

CPC分类号： H04B10/675 ,  H04B10/25137

摘要： A method for transmitting a signal and a fiber optic system comprising: a frequency modulated source; an optical transmission fiber positioned to receive the output of the frequency modulated source; an optical filter positioned to receive the output of the optical transmission fiber; and an optical receiver positioned to receive the output of the optical filter; characterized in that: an optical spectrum reshaper is positioned between the frequency modulated source and the optical transmission fiber; and wherein the optical filter is a narrow band pass filter relative to the bit rate of the transmitted signal; and further wherein the frequency excursion of the frequency modulated source is between 20% and 120% of the bit rate frequency.

摘要翻译： 一种用于发送信号和光纤系统的方法，包括：频率调制源; 定位成接收频率调制源的输出的光传输光纤; 定位成接收光传输光纤的输出的光学滤波器; 以及定位成接收所述滤光器的输出的光接收器; 其特征在于：光谱调制器位于调频源和光传输光纤之间; 并且其中所述滤光器是相对于所发射信号的比特率的窄带通滤波器; 并且其中所述频率调制源的频率偏移在所述比特率频率的20％至120％之间。

公开(公告)号：US07609977B2

公开(公告)日：2009-10-27

申请号：US11894509

申请日：2007-08-20

申请人： Yasuhiro Matsui ,  Daniel Mahgerefteh ,  Xueyan Zheng ,  Kevin McCallion ,  Parviz Tayebati

发明人： Yasuhiro Matsui ,  Daniel Mahgerefteh ,  Xueyan Zheng ,  Kevin McCallion ,  Parviz Tayebati

IPC分类号： H04B10/04

CPC分类号： G02B5/281 ,  H01S5/50 ,  H04B10/25133 ,  H04B10/504

摘要： A fiber optic communication system is disclosed having an optical signal source adapted to produce an amplitude and frequency modulated signal encoding binary data wherein high intensity 1 bits are red shifted relative to lower intensity 0 bits. The amplitude and frequency modulated signal is transmitted through a semiconductor optical amplifier (SOA), which may operate in saturation. An optical spectrum reshaper (OSR) is adapted to reshape the output of the SOA.

摘要翻译： 公开了一种具有光信号源的光纤通信系统，其适于产生编码二进制数据的幅度和频率调制信号，其中高强度1比特相对于较低强度0比特红移。 幅度和调频信号通过半导体光放大器（SOA）传输，这可以在饱和状态下工作。 光谱整形器（OSR）适用于重新形成SOA的输出。

公开(公告)号：US20090238224A1

公开(公告)日：2009-09-24

申请号：US12053344

申请日：2008-03-21

申请人： Xiong Ye ,  Hongmin Chen ,  Yasuhiro Matsui ,  Daniel Mahgerefteh

发明人： Xiong Ye ,  Hongmin Chen ,  Yasuhiro Matsui ,  Daniel Mahgerefteh

IPC分类号： H01S3/10

CPC分类号： H01S5/06256 ,  H01S5/0427 ,  H01S5/06251

摘要： A DBR laser, such as a semiconductor DBR laser is disclosed having improved frequency modulation performance. The laser includes a split gain electrode and a tuning electrode. A modulating current encoding a data signal is injected into a first section of the gain electrode whereas a substantially DC bias voltage is imposed on a second section of the gain electrode positioned between the first gain electrode and the tuning electrode. The first and second gain electrodes are electrically isolated from each other and the tuning electrode by a large isolation resistance. In some embodiments, the isolation resistance is generated by forming the electrodes on a P+ layer and removing portions of the P+ layer between adjacent electrodes. Capacitors may couple to one or both of the second gain electrode and the tuning electrode.

摘要翻译： 公开了一种具有改进的频率调制性能的DBR激光器，例如半导体DBR激光器。 激光器包括分裂增益电极和调谐电极。 将编码数据信号的调制电流注入增益电极的第一部分，而将大体上的直流偏置电压施加在位于第一增益电极和调谐电极之间的增益电极的第二部分上。 第一和第二增益电极通过大的隔离电阻彼此电隔离和调谐电极。 在一些实施例中，通过在P +层上形成电极并去除相邻电极之间的P +层的部分来产生隔离电阻。 电容器可以耦合到第二增益电极和调谐电极中的一个或两个。

公开(公告)号：US07536113B2

公开(公告)日：2009-05-19

申请号：US11037718

申请日：2005-01-18

申请人： Yasuhiro Matsui ,  Duncan Walker ,  Daniel Mahgerefteh ,  Parviz Tayebati

发明人： Yasuhiro Matsui ,  Duncan Walker ,  Daniel Mahgerefteh ,  Parviz Tayebati

IPC分类号： H04B10/06

CPC分类号： H04B10/504

摘要： A fiber optic communication system, comprising: an optical signal source adapted to produce a frequency modulated signal; and an optical spectrum reshaper adapted to receive the frequency modulated signal and output a substantially amplitude modulated signal; wherein the optical spectrum reshaper limits the bandwidth of the frequency modulated signal.

摘要翻译： 一种光纤通信系统，包括：适于产生调频信号的光信号源; 以及适于接收所述调频信号并输出​​基本幅度调制信号的光谱整形器; 其中光谱整形器限制了调频信号的带宽。

公开(公告)号：US07477851B2

公开(公告)日：2009-01-13

申请号：US11272100

申请日：2005-11-08

申请人： Daniel Mahgerefteh ,  Parviz Tayebati

发明人： Daniel Mahgerefteh ,  Parviz Tayebati

IPC分类号： H04B10/04

CPC分类号： H04B10/504 ,  G02B5/281 ,  G02B6/29358 ,  G02B6/29362 ,  G02B6/29394 ,  G02B6/29398 ,  H04B10/25133 ,  H04B10/58

摘要： This invention generally relates to an optical filter for a fiber optic communication system. An optical filter may be used, following a directly modulated laser source, and converts a partially frequency modulated signal into a substantially amplitude modulated signal. The optical filter may compensate for the dispersion in the fiber optic transmission medium and may also lock the wavelength of the laser source.

摘要翻译： 本发明一般涉及一种用于光纤通信系统的光学滤波器。 可以使用光滤波器，跟随直接调制的激光源，并将部分调频的信号转换成基本幅度调制的信号。 滤光器可以补偿光纤传输介质中的色散，也可以锁定激光源的波长。

公开(公告)号：US07474859B2

公开(公告)日：2009-01-06

申请号：US11784395

申请日：2007-04-06

申请人： Daniel Mahgerefteh ,  Xueyan Zheng ,  Yasuhiro Matsui ,  Parviz Tayebati

发明人： Daniel Mahgerefteh ,  Xueyan Zheng ,  Yasuhiro Matsui ,  Parviz Tayebati

IPC分类号： H04B10/04 ,  H04B10/155

CPC分类号： H04B10/516 ,  H04B10/505 ,  H04B10/5162 ,  H04B10/5561 ,  H04B2210/517

摘要： A system for generating a return-to-zero differentially-phase-shift-keyed (RZ-DPSK) optical signal comprising: a driver comprising an N-level digital multilevel transformer (DMT) configured to receive a two level digital electrical signal representing 1s and 0s and output a N-level electrical signal, wherein N>2; an FM source configured to receive the N-level electrical signal output by the driver and generate an optical frequency modulated signal; and an optical spectrum reshaper (OSR) configured to receive the optical frequency modulated signal output by the FM source and generate the desired RZ-DPSK optical signal. A method for generating a return-to-zero differentially-phase-shift-keyed (RZ-DPSK) optical signal, the method comprising: (1) receiving a two level digital electrical signal representing 1s and 0s and outputting a N-level electrical signal, wherein N>2; (2) receiving the N-level electrical signal output and generating an optical frequency modulated signal; and (3) receiving the optical frequency modulated signal and generating the desired RZ-DPSK optical signal.

摘要翻译： 一种用于产生归零差分相移键控（RZ-DPSK）光信号的系统，包括：驱动器，其包括N级数字多电平变压器（DMT），其被配置为接收表示1s的两级数字电信号 并输出N级电信号，其中N≥2; FM源，被配置为接收由驱动器输出的N电平电信号并产生光频调制信号; 以及光谱整形器（OSR），被配置为接收由FM源输出的光调制信号并产生所需的RZ-DPSK光信号。 一种用于产生归零差分相移键控（RZ-DPSK）光信号的方法，所述方法包括：（1）接收表示1s和0s的两电平数字电信号并输出​​N电平 信号，其中N> 2; （2）接收N电平电信号并产生光调制信号; 和（3）接收光调制信号并产生所需的RZ-DPSK光信号。

公开(公告)号：US20090003842A1

公开(公告)日：2009-01-01

申请号：US12126717

申请日：2008-05-23

申请人： Daniel Mahgerefteh ,  Kevin J. McCallion ,  The'Linh Nguyen ,  David Allouche

发明人： Daniel Mahgerefteh ,  Kevin J. McCallion ,  The'Linh Nguyen ,  David Allouche

IPC分类号： H04B10/04 ,  H01S3/10

CPC分类号： H04B10/532 ,  H04B10/5162 ,  H04B10/5561

摘要： Apparatus and methods for driving a transmitter to generate DNPSK signals is disclosed including generating N data streams comprising data symbols and for each of a plurality of sets of N simultaneous data symbols of the N data streams, imposing signals are on L of a plurality of signal lines, with the value of L corresponding to values of the N simultaneous data symbols. Signals on the plurality of signal lines are ANDed with a clock signal synchronized with the N data streams to produce RZ signals. The RZ signals are summed and the summed signal is input to a laser that produces an output having frequency modulation corresponding to the magnitude of the summed signal. The output of the laser is passed through an optical discriminator.

摘要翻译： 公开了用于驱动发射机以产生DNPSK信号的装置和方法，包括产生包括数据符号的N个数据流，以及针对N个数据流的多个N个同时数据符号组中的每一个，施加信号在多个信号的L上 线，其值L对应于N个同时数据符号的值。 多个信号线上的信号与与N个数据流同步的时钟信号“与”，以产生RZ信号。 将RZ信号相加，并将求和的信号输入到产生具有对应于求和信号的幅度的频率调制的输出的激光器。 激光器的输出通过光学鉴别器。

公开(公告)号：US20080247763A1

公开(公告)日：2008-10-09

申请号：US12014676

申请日：2008-01-15

申请人： Daniel Mahgerefteh ,  Xueyan Zheng ,  Yasuhiro Matsui ,  Parviz Tayebati ,  Andrew C. Singer

发明人： Daniel Mahgerefteh ,  Xueyan Zheng ,  Yasuhiro Matsui ,  Parviz Tayebati ,  Andrew C. Singer

IPC分类号： H04B10/04 ,  H04B10/02

CPC分类号： H04B10/5561 ,  H01S3/0057 ,  H01S3/0078

摘要： A method for generating D-N-PSK optical signals is disclosed wherein a laser is modulated to generate optical signal pairs including phase modulated and fixed phase portions, the phase modulated portions having a frequency encoding one or more data symbols and the fixed phase portion having a carrier frequency and a phase corresponding to the immediately preceding phase modulated portion. The output of the laser is passed through an optical spectrum reshaper having a transmission function chosen to attenuate a plurality of the phase modulated portions relative to the fixed phase portions. The phase modulated portions may have N frequency levels located on either side of the carrier frequency. One of the N frequency levels may be equal to the carrier frequency.

摘要翻译： 公开了一种用于产生DN-PSK光信号的方法，其中调制激光器以产生包括相位调制和固定相位部分的光信号对，所述相位调制部分具有对一个或多个数据符号进行编码的频率，并且具有载波的固定相位部分 频率和对应于紧接在前的相位调制部分的相位。 激光器的输出通过具有选择为相对于固定相位部分衰减多个相位调制部分的透射功能的光谱整形器。 相位调制部分可以具有位于载波频率的任一侧的N个频率电平。 N个频率电平中的一个可以等于载波频率。

公开(公告)号：US20080193144A1

公开(公告)日：2008-08-14

申请号：US12028678

申请日：2008-02-08

申请人： Jianying Zhou ,  Xueyan Zheng ,  Kevin J. McCallion ,  Daniel Mahgerefteh ,  Hongmin Chen ,  Guoxi Sun ,  Parviz Tayebati

发明人： Jianying Zhou ,  Xueyan Zheng ,  Kevin J. McCallion ,  Daniel Mahgerefteh ,  Hongmin Chen ,  Guoxi Sun ,  Parviz Tayebati

IPC分类号： H04B10/04

CPC分类号： H04B10/504 ,  H04B10/58

摘要： The frequency chirp modulation response of a directly modulated laser is described using a small signal model that depends on slow chirp amplitude s and slow chirp time constant τs. The small signal model can be used to derive an inverse response for designing slow chirp compensation means. Slow chirp compensation means include electrical compensation, optical compensation, or both. Slow chirp electrical compensation can be implemented with an LR filter or other RF circuit coupled to a direct modulation source (e.g., a laser driver) and the directly modulated laser. Slow chirp optical compensation can be implemented with an optical spectrum reshaper having a rounded top and relatively large slope (e.g., 1.5-3 dB/GHz). The inverse response can be designed to under-compensate, to produce a flat response, or to over-compensate.

摘要翻译： 使用取决于慢啁啾振幅s和慢啁啾时间常数τ的小信号模型来描述直接调制激光器的频率啁啾调制响应。 小信号模型可用于导出用于设计慢啁啾补偿装置的反向响应。 慢啁啾补偿装置包括电补偿，光学补偿或两者。 可以使用耦合到直接调制源（例如，激光驱动器）和直接调制的激光器的LR滤波器或其它RF电路来实现慢啁啾电补偿。 可以用具有圆顶和较大斜率（例如，1.5-3dB / GHz）的光谱整形器实现慢啁啾光学补偿。 反向响应可以设计为欠补偿，产生平坦响应或过度补偿。

公开(公告)号：US20080159751A1

公开(公告)日：2008-07-03

申请号：US11894509

申请日：2007-08-20

申请人： Yasuhiro Matsui ,  Daniel Mahgerefteh ,  Xueyan Zheng ,  Kevin J. McCallion ,  Parviz Tayebati

发明人： Yasuhiro Matsui ,  Daniel Mahgerefteh ,  Xueyan Zheng ,  Kevin J. McCallion ,  Parviz Tayebati

IPC分类号： H04B10/04

CPC分类号： G02B5/281 ,  H01S5/50 ,  H04B10/25133 ,  H04B10/504

摘要： A fiber optic communication system comprising:an optical signal source adapted to receive a binary first signal and generate a binary second signal, wherein the binary first signal has an amplitude modulated component, wherein the binary second signal has an amplitude modulated component and a frequency modulated component, and further wherein the binary second signal is characterized in that the higher intensity 1 bits are red shifted relative to the lower intensity 0 bits;a semiconductor optical amplifier (SOA) adapted to receive the binary second signal and generate a binary third signal, wherein the binary third signal has an amplitude modulated component and a frequency modulated component, and further wherein the semiconductor optical amplifier operates in saturation; andan optical spectrum reshaper (OSR) adapted to reshape the binary third signal into a binary fourth signal, wherein the binary fourth signal has an amplitude modulated component and a frequency modulated component.A method for transmitting a signal, comprising:receiving a binary first signal having an amplitude modulated component and generating a binary second signal having an amplitude modulated component and a frequency modulated component, wherein the binary second signal is characterized in that the higher intensity 1 bits are red shifted relative to the lower intensity 0 bits;passing the binary second signal through a semiconductor optical amplifier (SOA) operating in saturation so as to generate a binary third signal, wherein the binary third signal has an amplitude modulated component and a frequency modulated component; andreshaping the binary third signal into a binary fourth signal, wherein the binary fourth signal has an amplitude modulated component and a frequency modulated component.

摘要翻译： 一种光纤通信系统，包括：光信号源，适于接收二进制第一信号并产生二进制第二信号，其中所述二进制第一信号具有幅度调制分量，其中所述二进制第二信号具有幅度调制分量和频率调制 并且其中所述二进制第二信号的特征在于，较高强度1比特相对于较低强度0比特红移; 适于接收所述二进制第二信号并产生二进制第三信号的半导体光放大器（SOA），其中所述二进制第三信号具有幅度调制分量和调频分量，并且其中所述半导体光放大器工作在饱和状态; 以及适于将二进制第三信号重新形成二进制第四信号的光谱整形器（OSR），其中二进制第四信号具有调幅分量和调频分量。 一种用于发送信号的方法，包括：接收具有幅度调制分量的二进制第一信号并产生具有幅度调制分量和调频分量的二进制第二信号，其中二进制第二信号的特征在于较高强度1比特 相对于较低强度的0位红移; 使所述二进制第二信号通过饱和运行的半导体光放大器（SOA），以产生二进制第三信号，其中所述二进制第三信号具有调幅分量和调频分量; 以及将所述二进制第三信号重新形成二进制第四信号，其中所述二进制第四信号具有幅度调制分量和调频分量。