公开(公告)号：US06369926B1

公开(公告)日：2002-04-09

申请号：US09136714

申请日：1998-08-19

申请人： Gap Youl Lyu ,  Hyun Jae Lee ,  Seo Yeon Park ,  Jong Hyun Lee

发明人： Gap Youl Lyu ,  Hyun Jae Lee ,  Seo Yeon Park ,  Jong Hyun Lee

IPC分类号： H04B1004

CPC分类号： H04B10/506 ,  H04B10/564 ,  H04B10/572

摘要： A multichannel light source wavelength and strength stabilizing apparatus and a method thereof are disclosed. The apparatus includes a first proportional/integrator for receiving an output signal from the error detector, detecting a value proportional thereto, integrating the detected proportional value, generating a signal corresponding to the optimum feedback circuit, and outputting to the temperature controller; a current controller for providing the current capable of controlling the light strength in accordance with the signal inputted to the light source and stabilizing the light strength; a second optical coupling unit for dividing the output signal from the first optical coupling unit; a photodetector for converting the strength of a light among the output signals from the second optical coupling unit into an electrical signal; and a second proportional/integration unit for detecting a proportional value of the output signal from the optical detector, integrating the detected proportional value, generating a signal corresponding to the optimum feedback circuit, and outputting to the current controller.

摘要翻译： 公开了一种多通道光源波长和强度稳定装置及其方法。 该装置包括：第一比例/积分器，用于接收来自误差检测器的输出信号，检测与其成比例的值，积分检测到的比例值，产生对应于最佳反馈电路的信号，并输出到温度控制器; 电流控制器，用于根据输入到光源的信号提供能够控制光强度的电流并稳定光强度; 第二光耦合单元，用于分割来自第一光耦合单元的输出信号; 用于将来自第二光耦合单元的输出信号中的光的强度转换为电信号的光电检测器; 以及第二比例/积分单元，用于检测来自光学检测器的输出信号的比例值，积分检测到的比例值，产生对应于最佳反馈电路的信号，并输出到电流控制器。

公开(公告)号：US6118562A

公开(公告)日：2000-09-12

申请号：US986267

申请日：1997-12-05

申请人： Hyun Jae Lee ,  Gap Youl Lyu ,  Seo Yeon Park

发明人： Hyun Jae Lee ,  Gap Youl Lyu ,  Seo Yeon Park

IPC分类号： H04J14/02 ,  H01S5/0687 ,  H01S5/40 ,  H04B10/50 ,  H04B10/572

CPC分类号： H01S5/0687 ,  H04B10/506 ,  H04B10/572 ,  H01S5/4087

摘要： A wavelength aligning apparatus using an arrayed waveguide grating (AWG), and particularly, to a wavelength aligning apparatus using an arrayed waveguide grating which is capable of aligning optical sources using a transmission characteristic of an arrayed waveguide grating in a wavelength alignment method. The apparatus includes a signal generator for applying a signal spaced-apart at a predetermined interval near a predetermined frequency to a bias current of the light source and dithering a central wavelength of each light source, an arrayed waveguide grating for providing a reference wavelength causing a variation difference from the central portion due to a dithering of the central wavelength, a temperature controller for determining a reference wave length by constantly maintaining a temperature of the arrayed waveguide grating, an optical fiber coupler disposed in an output terminal of the arrayed waveguide grating for dividing the signal into a transmission signal and an incoming signal, a plurality of locking amplifiers and a proportional/integration/differentiating unit for computing a bias current corresponding to the detected error signal, and a superposing unit for superposing the computed bias current and a signal from the signal generator for output to the laser diode driver.

摘要翻译： 使用阵列波导光栅（AWG）的波长对准装置，特别涉及使用阵列波导光栅的波长对准装置，该阵列波导光栅能够使用波长对准方法中的阵列波导光栅的透射特性对准光源。 该装置包括：信号发生器，用于以预定频率以预定间隔间隔地附加到光源的偏置电流并抖动每个光源的中心波长的信号发生器，用于提供参考波长的阵列波导光栅， 由于中心波长的抖动引起的与中心部分的变化差异，用于通过不断维持阵列波导光栅的温度来确定参考波长的温度控制器，布置在阵列波导光栅的输出端中的光纤耦合器 将信号分成传输信号和输入信号，多个锁定放大器和用于计算与检测到的误差信号相对应的偏置电流的比例/积分/微分单元，以及叠加单元，用于叠加计算出的偏置电流和信号 从信号发生器输出到激光二极管驱动 r。

公开(公告)号：US20130163986A1

公开(公告)日：2013-06-27

申请号：US13641078

申请日：2011-04-15

申请人： Pavel Mamyshev ,  John Leonard Zyskind ,  Seo Yeon Park ,  Fenghai Liu

发明人： Pavel Mamyshev ,  John Leonard Zyskind ,  Seo Yeon Park ,  Fenghai Liu

IPC分类号： H04B10/2507

CPC分类号： H04B10/69

摘要： The present application describes methods and systems that improve the optical signal to noise ratio performance of an optical network without the need to vary the free spectral range associated with a differential interferometer. This is achieved by varying an electrical bandwidth of an electronic device associated with the receiver. For example, the electrical bandwidth may vary in inverse proportion to the combined effective optical bandwidth of the transmission line carrying the optical signal. The techniques described herein a applicable to a wide variety of modulation formats, including mPSK, DPSK, DmPSK, PDmPSK, mQAM, ODB, and other direct-detection formats. Using the techniques described herein, the optical signal to noise ratio and bit error ratio performance of the optical network is improved without the need to provide costly and complex differential interferometers whose free spectral range is variable.

摘要翻译： 本申请描述了改进光学网络的光信噪比性能的方法和系统，而不需要改变与差分干涉仪相关联的自由光谱范围。 这通过改变与接收器相关联的电子设备的电带宽来实现。 例如，电带宽可以与携带光信号的传输线的组合有效光带宽成反比变化。 本文描述的技术适用于包括mPSK，DPSK，DmPSK，PDmPSK，mQAM，ODB和其他直接检测格式的各种调制格式。 利用这里描述的技术，改善了光网络的光信噪比和比特误差比性能，而不需要提供昂贵和复杂的差分干涉仪，其自由光谱范围是可变的。

公开(公告)号：US07173756B2

公开(公告)日：2007-02-06

申请号：US10906382

申请日：2005-02-17

申请人： John Zyskind ,  Andrew Niall Robinson ,  Seo Yeon Park ,  Clement Dowd Burton ,  John Jacob ,  Erik Robert Thoen

发明人： John Zyskind ,  Andrew Niall Robinson ,  Seo Yeon Park ,  Clement Dowd Burton ,  John Jacob ,  Erik Robert Thoen

IPC分类号： H01S3/00

CPC分类号： H01S3/06758 ,  H01S3/094003 ,  H01S3/094096 ,  H01S3/1608 ,  H01S3/302 ,  H01S2301/04 ,  H04B10/2935

摘要： An optical communications system includes a plurality of optical fiber spans. An optical loss of one of the plurality of optical fiber spans is different from an optical loss of another one of the plurality of optical fiber spans. At least one of the plurality of optical fiber spans includes an optical loss that is greater than or equal to 35 dB and at least one of the plurality of optical fiber spans includes an optical loss that is less than 30 dB. An optical amplification system includes at least one discrete optical amplifier, at least one distributed optical amplifier, and an optical loss element. The optical amplification system has spectral gain that compensates for substantially all losses experienced by the optical signals propagating in the plurality of optical fiber spans.

摘要翻译： 光通信系统包括多个光纤跨段。 多个光纤跨度中的一个的光损耗不同于多个光纤跨段中的另一个的光损耗。 多个光纤跨度中的至少一个包括大于或等于35dB的光损耗，并且多个光纤跨度中的至少一个包括小于30dB的光损耗。 光放大系统包括至少一个分立光放大器，至少一个分布式光放大器和光损耗元件。 光放大系统具有光谱增益，其补偿在多个光纤跨段中传播的光信号所经历的基本上所有的损耗。