公开(公告)号：US06529317B2

公开(公告)日：2003-03-04

申请号：US09752549

申请日：2000-12-29

申请人： Bo-Hun Choi ,  Moo-Jung Chu ,  Seung-Kwan Kim ,  Jyung-Chan Lee ,  Hyo-Hoon Park

发明人： Bo-Hun Choi ,  Moo-Jung Chu ,  Seung-Kwan Kim ,  Jyung-Chan Lee ,  Hyo-Hoon Park

IPC分类号： H01S300

CPC分类号： H01S3/06754 ,  H01S3/094003

摘要： An improved long wavelength-band EDFA (L-band EDFA) is disclosed. The EDFA includes an input terminal for receiving signal light, a pumping unit for pumping a 1,530 nm wavelength band pumping light, a WDM coupler for multiplexing the signal light and the pumping light, and an EDF pumped by a 1,530 nm wavelength band pumping light for amplifying the signal light. Compared with conventional 1,480 nm pumping, the EDFA pumped by 1,530 nm band pumping have about two times higher power conversion efficiency.

摘要翻译： 公开了改进的长波长带EDFA（L波段EDFA）。 EDFA包括用于接收信号光的输入端子，用于泵浦1,530nm波长带式泵浦光的泵浦单元，用于多路复用信号光和泵浦光的WDM耦合器，以及通过1,530nm波长带的泵浦光泵浦的EDF 放大信号光。 与常规1,480nm泵浦相比，通过1,530nm波段泵浦泵浦的EDFA具有大约两倍的功率转换效率。

公开(公告)号：US20050111502A1

公开(公告)日：2005-05-26

申请号：US10897362

申请日：2004-07-21

申请人： Jyung-Chan Lee ,  Joon-Ki Lee ,  Yun-Hee Cho ,  Seung-Il Myong ,  Youn-Seon Jang ,  Yool Kwon ,  Kwangjoon Kim ,  Moo-Jung Chu

发明人： Jyung-Chan Lee ,  Joon-Ki Lee ,  Yun-Hee Cho ,  Seung-Il Myong ,  Youn-Seon Jang ,  Yool Kwon ,  Kwangjoon Kim ,  Moo-Jung Chu

IPC分类号： H01S5/30 ,  H01S3/13 ,  H01S5/024 ,  H01S5/026 ,  H01S5/042 ,  H01S5/068

CPC分类号： H01S5/06804 ,  H01S5/02415 ,  H01S5/0265 ,  H01S5/042

摘要： The present invention relates to a method for revising a wavelength of the EML by controlling a working temperature based on arithmetic functional relations between the DC-Offset voltage and the wavelength and between the working temperature and the wavelength, and a computer-readable recording medium thereof. The method includes the steps of: re-setting initial values of a working temperature, a amplifying voltage and the DC-Offset voltage; determining a wavelength with respect to the re-set DC-Offset voltage based on a functional relation between the DC-Offset voltage and the wavelength of the EML; and determining the revising working temperature for the determined wavelength based on the functional relation between the working temperature and the wavelength of the EML, and re-setting the working temperature with the revising working temperature.

摘要翻译： 本发明涉及一种通过基于DC偏移电压与波长之间以及工作温度和波长之间的算术函数关系来控制工作温度来修改EML的波长的方法及其计算机可读记录介质 。 该方法包括以下步骤：重新设定工作温度，放大电压和DC偏移电压的初始值; 基于所述DC偏移电压和所述EML的波长之间的函数关系来确定相对于所述重新设定的DC偏移电压的波长; 并根据工作温度和EML波长之间的功能关系确定确定波长的修正工作温度，并根据修改工作温度重新设定工作温度。

公开(公告)号：US07167493B2

公开(公告)日：2007-01-23

申请号：US10897362

申请日：2004-07-21

申请人： Jyung-Chan Lee ,  Joon-Ki Lee ,  Yun-Hee Cho ,  Seung-Il Myong ,  Youn-Seon Jang ,  Yool Kwon ,  Kwangjoon Kim ,  Moo-Jung Chu

发明人： Jyung-Chan Lee ,  Joon-Ki Lee ,  Yun-Hee Cho ,  Seung-Il Myong ,  Youn-Seon Jang ,  Yool Kwon ,  Kwangjoon Kim ,  Moo-Jung Chu

IPC分类号： H01S3/00 ,  H01S3/04 ,  H01S3/10 ,  H01S3/13 ,  H01S3/14

CPC分类号： H01S5/06804 ,  H01S5/02415 ,  H01S5/0265 ,  H01S5/042

摘要： The present invention relates to a method for revising a wavelength of the EML by controlling a working temperature based on arithmetic functional relations between the DC-Offset voltage and the wavelength and between the working temperature and the wavelength, and a computer-readable recording medium thereof. The method includes the steps of: re-setting initial values of a working temperature, a amplifying voltage and the DC-Offset voltage; determining a wavelength with respect to the re-set DC-Offset voltage based on a functional relation between the DC-Offset voltage and the wavelength of the EML; and determining the revising working temperature for the determined wavelength based on the functional relation between the working temperature and the wavelength of the EML, and re-setting the working temperature with the revising working temperature.

摘要翻译： 本发明涉及一种通过基于DC偏移电压与波长之间以及工作温度和波长之间的算术函数关系来控制工作温度来修改EML的波长的方法及其计算机可读记录介质 。 该方法包括以下步骤：重新设定工作温度，放大电压和DC偏移电压的初始值; 基于所述DC偏移电压和所述EML的波长之间的函数关系来确定相对于所述重新设定的DC偏移电压的波长; 并根据工作温度和EML波长之间的功能关系确定确定波长的修正工作温度，并根据修改工作温度重新设定工作温度。

公开(公告)号：US07038841B2

公开(公告)日：2006-05-02

申请号：US10696145

申请日：2003-10-28

申请人： Sun-Hyok Chang ,  Hee-Sang Chung ,  Jin-Soo Han ,  Seung-Kwan Kim ,  Won-Kyoung Lee ,  Moo-Jung Chu

发明人： Sun-Hyok Chang ,  Hee-Sang Chung ,  Jin-Soo Han ,  Seung-Kwan Kim ,  Won-Kyoung Lee ,  Moo-Jung Chu

IPC分类号： H04B10/12 ,  H01S3/00

CPC分类号： H04B10/296 ,  H01S3/06758 ,  H01S3/0941 ,  H01S3/10015 ,  H01S3/10069 ,  H01S3/1301 ,  H01S3/1305 ,  H01S3/1608 ,  H01S3/2375 ,  H01S3/302 ,  H01S2301/04 ,  H04B2210/003

摘要： A method for realizing, in a fiber amplifier with three stages of amplifiers, automatic gain control in which a constant gain is obtained when channels are varied, and automatic level control in which a constant output per channel is obtained when a light power is varied because of variations in span loss. A light power or another light power of a specific wavelength is monitored to determine when variations in these light powers take place, current values of pump laser diodes appropriate for an input is read from a lookup table, and pump laser diodes are driven. During this operation, a pump power of the first stage amplifier is constantly maintained, and those of the second or third stage amplifier are controlled.

摘要翻译： 一种用于在具有三级放大器的光纤放大器中实现自动增益控制的方法，其中当通道变化时获得恒定的增益，以及当光功率变化时获得每通道的恒定输出的自动电平控制，因为 的跨度损失的变化。 监测特定波长的光功率或其他光功率，以确定何时发生这些光功率的变化，从查找表中读取适合于输入的泵激光二极管的电流值，驱动泵激光二极管。 在此操作期间，始终保持第一级放大器的泵浦功率，并且控制第二级或第三级放大器的泵浦功率。

公开(公告)号：US06822214B2

公开(公告)日：2004-11-23

申请号：US10283946

申请日：2002-10-30

申请人： Jin-Soo Han ,  Moo-Jung Chu ,  Jong-Hyun Lee

发明人： Jin-Soo Han ,  Moo-Jung Chu ,  Jong-Hyun Lee

IPC分类号： H01J4014

CPC分类号： H04B10/697

摘要： Provided are an optical signal receiving apparatus whose optimum receiving performance is maintained regardless of a change in the power of an optical signal, and a method using the same. The apparatus includes an optical coupler for dividing an input optical signal at a predetermined ratio to produce first and second divided signals, a photoelectric converter for converting the first divided signal into an electric signal, an amplifier for amplifying the electric signal within a predetermined range centering on a reference voltage, a reference voltage controlling unit for detecting the power of the second divided signal, predicting the power of the first divided signal, and controlling the amplitude of the reference voltage in accordance with the predicted power, and a clock & data recovery unit for recovering a clock signal and data from a signal output from the amplifier. Even if the power of an optical signal changes, the reference voltage of a limiting amplifier, which is best suitable for optimum performance with respect to the power of an input optical signal, can be detected and adjusted using the method and apparatus, thereby maintaining the optimum receiving performance of the optical signal receiving apparatus.

摘要翻译： 提供了一种光信号接收装置及其使用方法的光接收装置，其优良的接收性能被保持，而与光信号的功率的变化无关。 该装置包括用于以预定比例分割输入光信号以产生第一和第二分频信号的光耦合器，用于将第一划分信号转换为电信号的光电转换器，用于在预定范围内放大电信号的放大器对中 在参考电压上，参考电压控制单元，用于检测第二分频信号的功率，预测第一分频信号的功率，并根据预测功率控制参考电压的振幅;以及时钟和数据恢复 用于从放大器输出的信号中恢复时钟信号和数据的单元。 即使光信号的功率发生变化，也可以使用该方法和装置来检测和调整限制放大器的参考电压，该极限放大器最适合于对于输入光信号的功率的最佳性能，从而保持 光信号接收装置的最佳接收性能。

公开(公告)号：US07010181B2

公开(公告)日：2006-03-07

申请号：US10687423

申请日：2003-10-15

申请人： Ki-Ho Han ,  Moo-Jung Chu

发明人： Ki-Ho Han ,  Moo-Jung Chu

IPC分类号： G02B6/00

CPC分类号： G02B6/2713 ,  G02B6/2746 ,  G02B6/278 ,  H04B10/2569

摘要： A device for compensating for PMD occurring in a transmission optical fiber in an optical transmission system. An output beam from an optical fiber link changes its polarization state by a polarization controller (PC) to be applied to a PBS. A first polarization component passes through a variable delay line, rotates by a predetermined angle, and is inputted to the PBS. A portion of a second polarization component is transmitted by a predetermined mirror. The reflected second polarization component is applied to the PBS to be combined with the first polarization component inputted to the PBS. The transmitted second polarization component passes through a photo-detector and a BPF. The filtered signal is inputted to a PC controller to select the smaller value among the currently and previously measured power values.

摘要翻译： 一种用于补偿在光传输系统中在传输光纤中发生的PMD的装置。 来自光纤链路的输出光束通过偏振控制器（PC）改变其偏振状态以施加到PBS。 第一偏振分量通过可变延迟线，旋转预定角度，并被输入到PBS。 第二偏振分量的一部分通过预定的反射镜传输。 将反射的第二偏振分量施加到PBS以与输入到PBS的第一偏振分量组合。 透射的第二偏振分量通过光检测器和BPF。 滤波后的信号被输入到PC控制器，以选择当前和先前测量的功率值中较小的值。