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：US07869473B2

公开(公告)日：2011-01-11

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：US20090268765A1

公开(公告)日：2009-10-29

申请号：US12110572

申请日：2008-04-28

申请人： Daniel Mahgerefteh ,  Hongmin Chen ,  Yasuhiro Matsui

发明人： Daniel Mahgerefteh ,  Hongmin Chen ,  Yasuhiro Matsui

IPC分类号： H01S5/06

CPC分类号： H01S5/0265 ,  H01S5/06246

摘要： Use of depletion edge translation as an in cavity phase modulation mechanism in lasers. Aspects of the invention are especially relevant (without limitation) in transmitters for extended reach comprising an intra cavity phase and amplitude modulated laser for generation of a frequency modulated signal and a passive optical spectrum reshaper element, sometimes referred to as a chirp modulated laser. Such techniques may be carried out as disclose herein by adopting predetermined doping profiles and applying predetermined voltage to the laser cavity, and more preferably to a phase section in or adjoining the laser cavity.

摘要翻译： 使用耗尽边缘平移作为激光器中的空腔相位调制机制。 本发明的各个方面在用于扩展到达的发射机中尤为重要（但不限于）包括用于产生频率调制信号的腔内相位和幅度调制激光器以及有时被称为啁啾调制激光器的无源光谱再生元件。 这样的技术可以如本文所公开的那样通过采用预定的掺杂分布和向激光器腔施加预定的电压，更优选地应用于激光腔中或邻近激光腔的相位部分来执行。

公开(公告)号：US08027593B2

公开(公告)日：2011-09-27

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： H04B10/12

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τs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：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：US20090269069A1

公开(公告)日：2009-10-29

申请号：US12110071

申请日：2008-04-25

申请人： Daniel Mahgerefteh ,  Hongmin Chen ,  Bernd Huebner

发明人： Daniel Mahgerefteh ,  Hongmin Chen ,  Bernd Huebner

IPC分类号： H04J14/02 ,  H04B10/04 ,  H04B10/12

CPC分类号： H04B10/504 ,  G02B6/29343 ,  G02B6/29355 ,  H04B10/54 ,  H04B10/548

摘要： An wave division multiplexed (WDM) optical transmitter is disclosed including a directly modulated laser array and a planar lightwave chip (PLC) having a plurality of OSRs that receive outputs of the laser array and increase the extinction ratio of the received light. An optical multiplexer receives the outputs of the OSRs and couples them to a single output port. The multiplexer has transmission peaks through its ports each having a 0.5 dB bandwidth including the frequency of a laser in the array. The optical multiplexer may be embodied as cascaded Mach-Zehnder interferometers or ring resonators.

摘要翻译： 公开了一种波分复用（WDM）光发射机，其包括直接调制的激光阵列和具有接收激光器阵列的输出并增加接收光的消光比的多个OSR的平面光波片（PLC）。 光复用器接收OSR的输出并将它们耦合到单个输出端口。 多路复用器通过其端口具有传输峰值，每个端口具有包括阵列中的激光器的频率的0.5dB带宽。 光复用器可以被实现为级联的马赫 - 曾德干涉仪或环形谐振器。

公开(公告)号：US08260150B2

公开(公告)日：2012-09-04

申请号：US12110071

申请日：2008-04-25

申请人： Daniel Mahgerefteh ,  Hongmin Chen ,  Bernd Huebner

发明人： Daniel Mahgerefteh ,  Hongmin Chen ,  Bernd Huebner

IPC分类号： H04B10/04

CPC分类号： H04B10/504 ,  G02B6/29343 ,  G02B6/29355 ,  H04B10/54 ,  H04B10/548

摘要： An wave division multiplexed (WDM) optical transmitter is disclosed including a directly modulated laser array and a planar lightwave chip (PLC) having a plurality of OSRs that receive outputs of the laser array and increase the extinction ratio of the received light. An optical multiplexer receives the outputs of the OSRs and couples them to a single output port. The multiplexer has transmission peaks through its ports each having a 0.5 dB bandwidth including the frequency of a laser in the array. The optical multiplexer may be embodied as cascaded Mach-Zehnder interferometers or ring resonators.

摘要翻译： 公开了一种波分复用（WDM）光发射机，其包括直接调制的激光阵列和具有接收激光器阵列的输出并增加接收光的消光比的多个OSR的平面光波片（PLC）。 光复用器接收OSR的输出并将它们耦合到单个输出端口。 多路复用器具有通过其端口的传输峰值，每个端口具有包括阵列中的激光器的频率的0.5dB带宽。 光复用器可以被实现为级联的马赫 - 曾德干涉仪或环形谐振器。

公开(公告)号：US08953947B2

公开(公告)日：2015-02-10

申请号：US13454290

申请日：2012-04-24

申请人： Ilya Lyubomirsky ,  Yasuhiro Matsui ,  Daniel Mahgerefteh

发明人： Ilya Lyubomirsky ,  Yasuhiro Matsui ,  Daniel Mahgerefteh

IPC分类号： H04B10/00

CPC分类号： H04B10/532 ,  H04J14/06

摘要： In some examples, a transmit assembly is described that may include a first optical transmitter, a second optical transmitter, and a polarizing beam combiner. The first optical transmitter may be configured to emit a first optical data signal centered at a first frequency. The second optical transmitter may be configured to emit a second optical data signal centered at a second frequency offset from the first frequency by a nominal offset n. The polarizing beam combiner may be configured to generate a dual carrier optical data signal by polarization interleaving the first optical data signal with the second optical data signal. An output of the polarizing beam combiner may be configured to be communicatively coupled via an optical transmission medium to a polarization-insensitive receive assembly.

摘要翻译： 在一些示例中，描述了可以包括第一光发射器，第二光发射器和偏振光束组合器的发射组件。 第一光发射器可以被配置为发射以第一频率为中心的第一光学数据信号。 第二光发射机可以被配置为以第一频率偏移标称偏移n发射以第二频率偏移为中心的第二光数据信号。 偏振光束组合器可以被配置为通过利用第二光学数据信号对第一光学数据信号进行极化交织来产生双载波光学数据信号。 偏振光束组合器的输出可以被配置为经由光传输介质通信耦合到偏振不敏感的接收组件。

公开(公告)号：US07613401B2

公开(公告)日：2009-11-03

申请号：US11787163

申请日：2007-04-13

申请人： Yasuhiro Matsui ,  Parviz Tayebati ,  Daniel Mahgerefteh

发明人： Yasuhiro Matsui ,  Parviz Tayebati ,  Daniel Mahgerefteh

IPC分类号： H04B10/04

CPC分类号： H04B10/5161 ,  H04B10/505 ,  H04B10/516 ,  H04B10/541 ,  H04B10/5563 ,  H04B2210/517

摘要： A fiber optic communication system comprising: an optical signal source adapted to receive a binary base signal having a bit period T, and generate a first signal, wherein the first signal is frequency modulated; and an optical spectrum reshaper (OSR) adapted to reshape the first signal into a second signal, wherein the second signal is amplitude modulated and frequency modulated; characterized in that: the optical signal source is a laser in which frequency modulation is generated by modulating the loss of the laser cavity. A method for transmitting a signal, comprising: receiving a binary base signal having a bit period T, and generating a first signal, wherein the first signal is frequency modulated; and reshaping the first signal into a second signal, wherein the second signal is amplitude modulated and frequency modulated; characterized in that: the first signal is frequency modulated by using a laser in which frequency modulation is generated by modulating the loss of the laser cavity. A fiber optic communication system comprising: an optical signal source adapted to receive a binary base signal having a bit period T, and generate a first signal, wherein the first signal is frequency modulated; and an optical spectrum reshaper (OSR) adapted to reshape the first signal into a second signal, wherein the second signal is amplitude modulated and frequency modulated; characterized in that: the optical signal source is a laser in which frequency modulation is generated by modulating the phase of the laser cavity.

摘要翻译： 一种光纤通信系统，包括：光信号源，适于接收具有位周期T的二进制基本信号，并产生第一信号，其中所述第一信号被频率调制; 以及适于将所述第一信号重新形成第二信号的光谱整形器（OSR），其中所述第二信号被幅度调制和频率调制; 其特征在于：光信号源是通过调制激光腔的损耗来产生频率调制的激光器。 一种用于发送信号的方法，包括：接收具有位周期T的二进制基本信号，并产生第一信号，其中第一信号被频率调制; 以及将所述第一信号重新形成第二信号，其中所述第二信号被幅度调制和频率调制; 其特征在于：通过使用通过调制激光腔的损耗产生频率调制的激光来对第一信号进行频率调制。 一种光纤通信系统，包括：光信号源，适于接收具有位周期T的二进制基本信号，并产生第一信号，其中所述第一信号被频率调制; 以及适于将所述第一信号重新形成第二信号的光谱整形器（OSR），其中所述第二信号被幅度调制和频率调制; 其特征在于：光信号源是通过调制激光腔的相位来产生频率调制的激光器。

公开(公告)号：US07542683B2

公开(公告)日：2009-06-02

申请号：US11784411

申请日：2007-04-06

申请人： Yasuhiro Matsui ,  Daniel Mahgerefteh

发明人： Yasuhiro Matsui ,  Daniel Mahgerefteh

IPC分类号： H04B10/04

CPC分类号： H04B10/516 ,  H04B10/504 ,  H04B10/5561 ,  H04B2210/517

摘要： A fiber optic communication system comprising: an optical signal source adapted to receive a binary base signal having a bit period T, and generate a first signal, wherein the first signal is frequency modulated; and an optical spectrum reshaper (OSR) adapted to reshape the first signal into a second signal, wherein the second signal is amplitude modulated and frequency modulated; characterized in that: the frequency excursion of the first signal is adjusted such that the frequency excursion is substantially equal to the ratio of the bit period of the digital base signal to total dispersion of the transmission fiber, whereby to increase the tolerance of the second signal to dispersion in a transmission fiber.

摘要翻译： 一种光纤通信系统，包括：光信号源，适于接收具有位周期T的二进制基本信号，并产生第一信号，其中所述第一信号被频率调制; 以及适于将所述第一信号重新形成第二信号的光谱整形器（OSR），其中所述第二信号被幅度调制和频率调制; 其特征在于：调节第一信号的频率偏移，使得频率偏移基本上等于数字基本信号的位周期与传输光纤的总色散的比率，由此增加第二信号的容差 以分散在传输光纤中。