公开(公告)号：US07630425B2

公开(公告)日：2009-12-08

申请号：US10786839

申请日：2004-02-25

申请人： Parviz Tayebati ,  Kevin McCallion ,  Duncan Walker

发明人： Parviz Tayebati ,  Kevin McCallion ,  Duncan Walker

IPC分类号： H01S3/08

CPC分类号： G02F1/29 ,  G02B6/2931 ,  G02B6/29311 ,  G02F1/0147 ,  G02F2201/16 ,  H01S5/005 ,  H01S5/02284 ,  H01S5/0612 ,  H01S5/12 ,  H01S5/141 ,  H01S5/146 ,  H01S5/4012 ,  H01S5/4031 ,  H01S5/4075 ,  H01S5/4087

摘要： Apparatus is disclosed for optically steering an optical beam, the apparatus comprising a pair of optical prism components arranged together with a diffraction grating so as to allow efficient coupling of an array of spectrally and spatially offset laser diodes to a common optical fiber. A method of optically steering at least one of a series of optical beams is disclosed, the method comprising providing a pair of optical prism components comprising a thermo-optic material; actuating at least one of the components so as to steer at least one of the series of optical beams received from an array of spatially and spectrally offset lasers.

摘要翻译： 公开了用于光学转向光束的装置，该装置包括与衍射光栅一起布置的一对光学棱镜部件，以便允许频谱和空间偏移的激光二极管的阵列与公共光纤的有效耦合。 公开了一种光学地转向一系列光束中的至少一个的方法，该方法包括提供包括热光材料的一对光学棱镜部件; 致动所述组件中的至少一个，以便引导从空间和频谱偏移激光器的阵列接收的所述一系列光束中的至少一个。

公开(公告)号：US06594022B1

公开(公告)日：2003-07-15

申请号：US09644781

申请日：2000-08-23

申请人： Reich Watterson ,  Parviz Tayebati ,  Kevin McCallion ,  Daryoosh Vakhshoori

发明人： Reich Watterson ,  Parviz Tayebati ,  Kevin McCallion ,  Daryoosh Vakhshoori

IPC分类号： G01B902

CPC分类号： H01S5/0687 ,  G01J9/0246 ,  H01S5/18366 ,  H01S5/18388

摘要： A wavelength reference device for tuning a tunable Fabry-Perot filter and/or a tunable VCSEL to a desired frequency, where the device uses a Fizeau interferometer and a position sensitive detector, with the position sensitive detector being used to measure the location of the maximum reflected power from the interferometer, whereby to determine the wavelength of laser radiation for tuning the device.

摘要翻译： 用于将可调谐Fabry-Perot滤波器和/或可调谐VCSEL调谐到所需频率的波长参考装置，其中该装置使用Fizeau干涉仪和位置敏感检测器，位置敏感检测器用于测量最大值的位置 来自干涉仪的反射功率，从而确定用于调谐该装置的激光辐射的波长。

公开(公告)号：US06526079B1

公开(公告)日：2003-02-25

申请号：US09636817

申请日：2000-08-10

申请人： Reich Watterson ,  Parviz Tayebati ,  Kevin McCallion

发明人： Reich Watterson ,  Parviz Tayebati ,  Kevin McCallion

IPC分类号： H01S313

CPC分类号： H01S5/0687 ,  H01S5/0078 ,  H01S5/183

摘要： A compact wavelength monitoring and control assembly for a narrow band source is provided comprising a narrow bandpass, wavelength selective transmission filter element, of Fabry-Perot structure, through which two collimated beams from a laser source are directed onto two photodetectors. The differential output of the two photodetectors is used in a feedback loop to stabilize the source to the desired wavelength. Through the dependence of the wavelength transmission of the Fabry-Perot etalon on angle and physical parameters, a wavelength variation of the source is converted into a transmission loss, which is different for the detectors, so that the wavelength change is detected by changes in the signals output from the detectors. Through the controlled variation of the source wavelength in the vicinity of the transmission maximum of the etalon, the absolute frequency of the Fabry-Perot locking point may be confirmed by the variation of the ratio of the detector signals.

摘要翻译： 提供了一种用于窄带源的紧凑型波长监测和控制组件，其包括法布里 - 珀罗结构的窄带通波长选择性透射滤波器元件，来自激光源的两个准直束通过该波长选择透射滤波器元件被引导到两个光电检测器上。 两个光电检测器的差分输出用于反馈回路，以将源稳定到期望的波长。 通过法布里 - 珀罗标准具的波长传输对角度和物理参数的依赖性，源的波长变化被转换为传感器损耗，这对于检测器是不同的，因此波长变化通过 从检测器输出的信号。 通过在标准具的传输最大值附近的源波长的受控变化，法布里 - 珀罗锁定点的绝对频率可以通过检测器信号的比率的变化来确定。

公开(公告)号：US08131157B2

公开(公告)日：2012-03-06

申请号：US12017957

申请日：2008-01-22

申请人： Fred L. Heismann ,  Daniel Mahgerefteh ,  Parviz Tayebati

发明人： Fred L. Heismann ,  Daniel Mahgerefteh ,  Parviz Tayebati

IPC分类号： H04B10/04

CPC分类号： H04B10/25137 ,  H04B10/504

摘要： An optical transmitter is disclosed wherein a modulating signal, such as an NRZ signal, encoding data is combined with a time derivative of the modulating signal and coupled to a directly modulated laser in order to generate artificial transient chirp in the output of the laser effective to substantially compensate for dispersion experienced by the output of the laser traveling through a dispersive medium such as an optical fiber. In some embodiments, the time derivative is added to the modulating signal only at the falling edges of the modulating signal.

摘要翻译： 公开了一种光发射机，其中诸如NRZ信号的编码数据的调制信号与调制信号的时间导数组合并耦合到直接调制的激光器，以便在激光器的输出中产生人为瞬态啁啾， 基本上补偿了通过诸如光纤的分散介质传播的激光器的输出所经历的色散。 在一些实施例中，仅在调制信号的下降沿将时间导数添加到调制信号。

公开(公告)号：US07809280B2

公开(公告)日：2010-10-05

申请号：US11894477

申请日：2007-08-21

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

发明人： Daniel Mahgerefteh ,  Yasuhiro Matsui ,  Xueyan Zheng ,  Bart Johnson ,  Duncan J W 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。

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：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：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。