公开(公告)号：US5974209A

公开(公告)日：1999-10-26

申请号：US69714

申请日：1998-04-30

申请人： Pak Shing Cho ,  Daniel Mahgerefteh

发明人： Pak Shing Cho ,  Daniel Mahgerefteh

IPC分类号： H04B10/18 ,  G02B6/26

CPC分类号： H04B10/2507

摘要： Optical signal produced by a semiconductor electroabsorption modulator is passed through an optical discriminator to increase the optical and electrical modulation response of the device and decrease the output chirp for distortionless transmission through dispersive optical fiber.

摘要翻译： 由半导体电吸收调制器产生的光信号通过光鉴别器，以增加器件的光电调制响应和减少输出啁啾，使其通过色散光纤进行无失真传输。

公开(公告)号：US6046841A

公开(公告)日：2000-04-04

申请号：US66744

申请日：1998-04-24

申请人： Daniel Mahgerefteh ,  Pak Shing Cho

发明人： Daniel Mahgerefteh ,  Pak Shing Cho

IPC分类号： G02F1/35 ,  H01S5/50 ,  H04B10/17

CPC分类号： H04B10/2914 ,  H01S5/50 ,  G02F1/3517 ,  H01S5/509

摘要： The optical signal produced by a semiconductor-optical-amplifier based wavelength converter is passed through an optical discriminator. The resulting signal has improved extinction ratio for return-to-zero data and improved high-frequency response for both non-return-to-zero and return-to-zero data.

摘要翻译： 由基于半导体光放大器的波长转换器产生的光信号通过光鉴别器。 所得到的信号具有改善的归零数据的消光比，并且改善了非归零和归零归零数据的高频响应。

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：US08160455B2

公开(公告)日：2012-04-17

申请号：US12566471

申请日：2009-09-24

申请人： Daniel Mahgerefteh ,  Thelinh Nguyen ,  Xueyan Zheng ,  Sunil Priyadarshi

发明人： Daniel Mahgerefteh ,  Thelinh Nguyen ,  Xueyan Zheng ,  Sunil Priyadarshi

IPC分类号： H04B10/04

CPC分类号： H04B10/25137 ,  H04B10/504

摘要： An optical transmitter is disclosed wherein a signal processor receives a data stream and outputs a drive signal for a laser, where the drive signal encodes each bit of the data stream according to the values of adjacent bits effective to compensate for spreading of bits within the fiber. The output of the laser is input to an optical spectrum reshaper that outputs a signal having an enhanced extinction ratio.

摘要翻译： 公开了一种光发射机，其中信号处理器接收数据流并输出用于激光器的驱动信号，其中驱动信号根据有效补偿光纤内的比特扩展的相邻比特数据对数据流的每个比特进行编码 。 激光器的输出被输入到输出具有增强消光比的信号的光谱整形器。

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：US20100226395A1

公开(公告)日：2010-09-09

申请号：US11493140

申请日：2006-07-26

申请人： Min Jiang ,  Daniel Mahgerefteh

发明人： Min Jiang ,  Daniel Mahgerefteh

IPC分类号： H01S3/30

CPC分类号： H01S3/067 ,  G02F1/37 ,  H01S3/0092 ,  H01S3/0675 ,  H01S3/06791 ,  H01S3/094003 ,  H01S3/094076 ,  H01S3/1024

摘要： This invention discloses a method to control laser dynamics in a gain-switched fiber laser so as to generate stable, clean pulses in an all-fiber format. The gain-switched fiber laser is suitable as a standalone laser source, and as a pump source for harmonic generation and an optical-parametric-oscillator.

摘要翻译： 本发明公开了一种在增益切换光纤激光器中控制激光动力学的方法，以便产生全光纤格式的稳定，干净的脉冲。 增益开关光纤激光器适合作为独立的激光源，作为谐波发生的泵浦源和光参量振荡器。

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。

公开(公告)号：US07480464B2

公开(公告)日：2009-01-20

申请号：US11635861

申请日：2006-12-08

申请人： Kevin McCallion ,  Yasuhiro Matsui ,  Jianying Zhou ,  Michael Deutsch ,  Parviz Tayebati ,  Daniel Mahgerefteh

发明人： Kevin McCallion ,  Yasuhiro Matsui ,  Jianying Zhou ,  Michael Deutsch ,  Parviz Tayebati ,  Daniel Mahgerefteh

IPC分类号： H04J14/02 ,  H04B10/04

CPC分类号： H01S5/4006 ,  H01S5/005 ,  H01S5/0064 ,  H01S5/02216 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/4087

摘要： An optical transmitter comprising: (i) an electrical switch; (ii) a laser array comprising a plurality of tunable laser elements; and (iii) an Optical Spectrum Reshaper (OSR) used to reshape the output pulses from the laser elements in the laser array; wherein the electrical switch takes an input electrical digital signal and selectively directs it to a specific laser element in the DFB laser array.

摘要翻译： 一种光发射机，包括：（i）电开关; （ii）包括多个可调谐激光元件的激光器阵列; 和（iii）用于重新形成来自激光器阵列中的激光元件的输出脉冲的光谱整形器（OSR）; 其中电开关采用输入电数字信号，并选择性地将其引导到DFB激光器阵列中的特定激光元件。

公开(公告)号：US20080193143A1

公开(公告)日：2008-08-14

申请号：US11894477

申请日：2007-08-21

申请人： Daniel Mahgerefteh ,  Yasuhiro Matsui ,  Xueyan Zheng ,  Bart Johnson ,  Duncan JW Walker ,  Parviz Tayebati

发明人： Daniel Mahgerefteh ,  Yasuhiro Matsui ,  Xueyan Zheng ,  Bart Johnson ,  Duncan JW Walker ,  Parviz Tayebati

IPC分类号： H04B10/04

CPC分类号： H04B10/505 ,  H04B10/25137 ,  H04B10/504

摘要： An optical transmitter comprising: an optical source modulated with an input digital data signal so as to generate a first, frequency-modulated digital signal; and an amplitude modulator, modulated with the logical inverse of the input digital data signal, for receiving the first, frequency-modulated signal and generating a second, amplitude-modulated and frequency-modulated digital signal; wherein the optical source and the amplitude modulator are each configured so as to produce positive transient chirp. A method for transmitting a signal, the method comprising: generating a first, frequency-modulated digital signal by modulating an optical source with an input digital data signal; and providing a second, amplitude-modulated and frequency-modulated digital signal by passing the first, frequency-modulated digital signal through an amplitude modulator while modulating the amplitude modulator with the logical inverse of the input digital data signal; wherein the optical source and the amplitude modulator are each configured so as to produce positive transient chirp.

摘要翻译： 一种光发射机，包括：用输入数字数据信号调制的光源，以产生第一调频数字信号; 以及用输入数字数据信号的逻辑反相调制的幅度调制器，用于接收第一频率调制信号并产生第二幅度调制和调频数字信号; 其中光源和幅度调制器各自被配置为产生正瞬态啁啾。 一种用于发送信号的方法，所述方法包括：通过用输入数字数据信号调制光源来产生第一调频数字信号; 以及通过使所述第一调频数字信号通过幅度调制器，同时用所输入的数字数据信号的逻辑反相调制所述振幅调制器来提供第二幅度调制和调频数字信号; 其中光源和幅度调制器各自被配置为产生正瞬态啁啾。