公开(公告)号：US07081989B2

公开(公告)日：2006-07-25

申请号：US10688560

申请日：2003-10-17

申请人： Kwan-Woong Song ,  Jun-Ho Koh ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Kwan-Woong Song ,  Jun-Ho Koh ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H04B10/12 ,  H01S4/00

CPC分类号： H01S3/094003 ,  H01S3/06754 ,  H01S3/094023 ,  H01S3/2383

摘要： Disclosed is a wide-band fiber amplifier for amplifying C-band and L-band optical signals, including a first amplifying unit including a first amplifying fiber adapted to be (1) pumped in at least one direction (2) amplify both the C-band and L-band optical signals and (3) output Amplified Spontaneous Emission (ASE), a second amplifying unit including a second amplifying fiber adapted to be pumped by amplified ASE and secondarily amplify the amplified L-band optical signal, and an L-band pumping light source including a third amplifying fiber adapted to be pumped in at least one direction while being pumped by the ASE, and output amplified ASE used to pump the second amplifying fiber.

摘要翻译： 公开了一种用于放大C波段和L波段光信号的宽带光纤放大器，包括第一放大单元，该第一放大单元包括第一放大光纤，该第一放大单元适于（1）在至少一个方向上泵浦（2） 频带和L波段光信号，以及（3）输出放大自发辐射（ASE），第二放大单元，包括适于被放大的ASE泵浦的第二放大光纤，并且二次放大放大的L波段光信号， 带泵浦光源，包括适于在被ASE泵浦的同时被泵浦至少一个方向的第三放大光纤，以及用于泵浦第二放大光纤的输出放大的ASE。

公开(公告)号：US06972897B2

公开(公告)日：2005-12-06

申请号：US10264967

申请日：2002-10-04

申请人： Kwan-Woong Song ,  Seong-Taek Hwang

发明人： Kwan-Woong Song ,  Seong-Taek Hwang

IPC分类号： H01S3/23 ,  G02B6/00 ,  H01S3/06 ,  H01S3/067 ,  H01S3/094 ,  H01S3/10 ,  H01S3/106 ,  H01S3/16 ,  H01S3/00

CPC分类号： H01S3/06758 ,  H01S3/0675 ,  H01S3/06766 ,  H01S3/0677 ,  H01S3/06791 ,  H01S3/094023 ,  H01S3/094042 ,  H01S3/1003 ,  H01S3/106 ,  H01S3/1608

摘要： The present invention discloses a long-band Erbium doped-fiber amplifier including: a first Erbium doped fiber with a predetermined length, coupled to a first pumping light source through a first wavelength-selective coupler, for amplifying a C-band optical signal by supplied pumping light; a second Erbium doped fiber with a predetermined length for amplifying an L-band optical signal by a second pumping light source; a feedback loop for recycling a specific C-band wavelength generated in the amplification of the first Erbium doped fiber as the second pumping light source of the L-band optical signal; a tap coupler formed between the first and second Erbium doped fibers, for dividing the optical power amplified in the first Erbium doped fiber, for supplying a predetermined ratio of optical power to the second Erbium doped fiber, and for re-inputting the residual optical power to the feedback loop; and, a second wavelength-selective coupler for coupling the signal light transmitted from the tap coupler to the first Erbium doped fiber.

摘要翻译： 本发明公开了一种长波段铒掺杂光纤放大器，包括：具有预定长度的第一掺铒光纤，通过第一波长选择耦合器耦合到第一泵浦光源，用于通过提供的C波段光信号放大C波段光信号 抽光灯 具有预定长度的第二掺铒光纤，用于通过第二泵浦光源放大L波段光信号; 反馈回路，用于将在第一掺铒光纤的放大中产生的特定C波段波长再循环为L波段光信号的第二泵浦光源; 形成在所述第一和第二掺铒光纤之间的分接耦合器，用于分割在所述第一掺铒光纤中放大的光功率，以向所述第二掺铒光纤提供预定比率的光功率，以及用于重新输入剩余光功率 到反馈回路; 以及用于将从分接耦合器发射的信号光耦合到第一掺铒光纤的第二波长选择耦合器。

公开(公告)号：US07092147B2

公开(公告)日：2006-08-15

申请号：US10858913

申请日：2004-06-02

申请人： Sang-Ho Kim ,  Seong-Taek Hwang ,  Se-Hong Park ,  Kwan-Woong Song ,  Gyu-Woong Lee

发明人： Sang-Ho Kim ,  Seong-Taek Hwang ,  Se-Hong Park ,  Kwan-Woong Song ,  Gyu-Woong Lee

IPC分类号： H01S3/00

CPC分类号： H04B10/506 ,  H01S3/005 ,  H01S3/0078 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/0677 ,  H01S3/094011 ,  H01S3/094023 ,  H01S5/0064 ,  H04B10/294

摘要： A broadband light source includes an optical amplifier having amplifying mediums connected in series outputs an amplified spontaneous emission light over a wide wavelength range forward or backward. A circulator connected in series to the optical amplifier returns back to the amplifier spontaneous emission light outputted backwardly from the amplifier. A first pumping means located between the circulator and the optical amplifier pumps a pumping light to the optical amplifier, and a second pumping means located after the optical amplifier pumps a pumping light to the optical amplifier.

摘要翻译： 宽带光源包括具有串联连接的放大介质的光放大器，其在宽波长范围内向前或向后输出放大的自发发射光。 与光放大器串联连接的环行器返回到从放大器向后输出的放大器自发发射光。 位于循环器和光学放大器之间的第一泵送装置将泵浦光泵送到光放大器，以及位于光放大器将泵浦光泵送到光放大器之后的第二泵装置。

公开(公告)号：US06972898B2

公开(公告)日：2005-12-06

申请号：US10374894

申请日：2003-02-26

申请人： Seong-Taek Hwang ,  Kwan-Woong Song

发明人： Seong-Taek Hwang ,  Kwan-Woong Song

IPC分类号： H01S3/10 ,  G02B6/00 ,  H04B10/12

CPC分类号： H04B10/2941

摘要： Disclosed is a wide band optical fiber amplifier for amplifying C and L-band optical signal components having an economical configuration, high amplification efficiency while exhibiting a low noise figure. The amplifier includes first and second isolators; first, second, and third amplification units; a distributor; a gain flattening filter; and first and second reflectors. The amplifier receives C and L band optical signals and process the signals by: amplifying C and L band signals; gain flattening the only C band signal twice; amplifying C and L band signals for the second time; splitting the C band signal from L band signal; subjecting L band signal to be amplified three more times; and combining resulting C and L band signals.

摘要翻译： 公开了一种宽带光纤放大器，用于放大具有经济配置，高放大效率，同时具有低噪声系数的C波段和L波段光信号分量。 放大器包括第一和第二隔离器; 第一，第二和第三放大单元; 经销商 增益压扁过滤器; 第一和第二反射器。 放大器接收C和L波段光信号，并通过以下步骤处理信号：放大C和L波段信号; 增加了仅有的C波段信号的两倍; 第二次放大C和L波段信号; 从L波段信号中分离C波段信号; 对L波段信号进行三次放大; 并结合产生的C和L波段信号。

公开(公告)号：US06785043B2

公开(公告)日：2004-08-31

申请号：US10236158

申请日：2002-09-06

申请人： Seong-Taek Hwang ,  Kwan-Woong Song ,  Sung-Tae Kim ,  Young-Hoon Joo ,  Sung-Jin Park

发明人： Seong-Taek Hwang ,  Kwan-Woong Song ,  Sung-Tae Kim ,  Young-Hoon Joo ,  Sung-Jin Park

IPC分类号： H01S300

CPC分类号： H01S3/06754 ,  H01S3/0057 ,  H01S3/0064 ,  H01S3/06758 ,  H01S3/094003

摘要： Disclosed is a dispersion-compensated optical-fiber amplifier including a circulator for outputting an optical signal received at a first terminal to a second terminal, while outputting an optical signal received at the second terminal to a third terminal; a first amplifier for amplifying the optical signal from the second terminal and an optical signal reapplied thereto; a dispersion-compensating fiber for compensating for a dispersion occurring in the optical signal received from the first amplifier and an optical signal reapplied thereto; a second amplifier for amplifying the optical signal from the dispersion-compensating fiber and an optical signal reapplied thereto; a splitter installed on the dispersion-compensating fiber and adapted to output to the dispersion-compensating fiber, an optical signal applied thereto and an optical signal reapplied thereto, while outputting a pumping light applied to one end thereof and adapted to pump both the first and second amplifiers to the other end thereof without allowing the pumping light to pass through the dispersion-compensating fiber; and, a reflector for reflecting back an optical signal from the second amplifier, so that the reflected optical signal is reapplied to the second amplifier, the splitter, the first amplifier, and the circulator, in this order.

摘要翻译： 公开了一种色散补偿光纤放大器，包括：循环器，用于将在第一端子处接收的光信号输出到第二端子，同时将在第二端子接收的光信号输出到第三端子; 用于放大来自第二端子的光信号的第一放大器和重新施加到其上的光信号; 用于补偿从第一放大器接收的光信号中出现的色散的色散补偿光纤和重新施加于其上的光信号; 用于放大来自色散补偿光纤的光信号的第二放大器和重新应用于其的光信号; 分散器，其安装在色散补偿光纤上并且适于输出到色散补偿光纤，施加到色散补偿光纤的光信号和重新施加到其上的光信号，同时输出施加到色散补偿光纤的一端的泵浦光，并且适于泵浦第一和 第二放大器到另一端，而不允许泵浦光通过色散补偿光纤; 以及用于反射来自第二放大器的光信号的反射器，使得反射的光信号按照该顺序重新施加到第二放大器，分路器，第一放大器和循环器。

公开(公告)号：US07068425B2

公开(公告)日：2006-06-27

申请号：US10648664

申请日：2003-08-26

申请人： Seong-Taek Hwang ,  Kwan-Woong Song ,  Yun-Je Oh

发明人： Seong-Taek Hwang ,  Kwan-Woong Song ,  Yun-Je Oh

IPC分类号： H01S3/00

CPC分类号： H04B10/291 ,  H01S3/06754 ,  H01S3/094003 ,  H01S3/094023 ,  H01S3/2383

摘要： Disclosed wideband optical fiber amplifier amplifies and outputs wideband optical signal containing C-band and L-band optical signals. The amplifier includes: a first amplification section amplifying the wideband optical signals; a second amplification section amplifying the separated L-band optical signals amplified by the first amplification section; an optical signal coupler combining and outputting the optical signals amplified by the first and second amplification sections; and an optical circulator. A first port of the optical circulator inputs the wideband optical signals from the optical communication network; a second port outputs the inputted wideband optical signals and inputs spontaneous emissions generated from the first amplification section; a third port provides the spontaneous emissions to the second amplification section while inputting the L-band optical signals amplified by the second amplification section; and a fourth port outputs L-band optical signals that were inputted to the third port to the optical signal coupler.

摘要翻译： 公开的宽带光纤放大器放大并输出包含C波段和L波段光信号的宽带光信号。 放大器包括：放大宽带光信号的第一放大部分; 第二放大部分，放大由第一放大部分放大的分离的L波段光信号; 光信号耦合器，组合并输出由第一和第二放大部分放大的光信号; 和光循环器。 光环行器的第一个端口输入来自光通信网络的宽带光信号; 第二端口输出所输入的宽带光信号并输入从第一放大部分产生的自发辐射; 第三端口在输入由第二放大部分放大的L波段光信号的同时，向第二放大部分提供自发辐射; 并且第四端口将输入到第三端口的L波段光信号输出到光信号耦合器。

公开(公告)号：US07016106B2

公开(公告)日：2006-03-21

申请号：US10688593

申请日：2003-10-17

申请人： Kwan-Woong Song ,  Seong-Taek Hwang ,  Jun-Ho Koh

发明人： Kwan-Woong Song ,  Seong-Taek Hwang ,  Jun-Ho Koh

IPC分类号： H04B10/12

CPC分类号： H01S3/094003 ,  H01S3/06754 ,  H01S3/094023 ,  H01S3/2383

摘要： Disclosed is a gain-controllable wideband optical fiber amplifier for amplifying both C-band and L-band optical signals, which comprises: a first amplifying section configured to (1) be pumped in at least one direction, (2) amplify both C-band and L-band optical signals and (3) output an amplified spontaneous emission; an optical attenuator for attenuating the power of the spontaneous emission; and a second amplifying section pumped by the attenuated spontaneous emission to secondarily amplify the amplified L-band optical signals.

摘要翻译： 公开了一种用于放大C波段和L波段光信号的增益可控宽带光纤放大器，其包括：第一放大部分，被配置为（1）至少沿一个方向泵浦，（2）放大C- 频带和L波段光信号，（3）输出放大的自发发射; 用于衰减自发发射功率的光衰减器; 以及通过衰减的自发发射泵浦的第二放大部分，以二次放大放大的L波段光信号。

公开(公告)号：US06975448B2

公开(公告)日：2005-12-13

申请号：US10719140

申请日：2003-11-21

申请人： Se-Hong Park ,  Sang-Ho Kim ,  Kwan-Woong Song ,  Seong-Taek Hwang ,  Tae-Sung Park

发明人： Se-Hong Park ,  Sang-Ho Kim ,  Kwan-Woong Song ,  Seong-Taek Hwang ,  Tae-Sung Park

IPC分类号： H01S3/10 ,  H01S3/00 ,  H01S3/067 ,  H01S3/13 ,  H01S3/131 ,  H04B10/17

CPC分类号： H04B10/2942 ,  H01S3/06754 ,  H01S3/10015 ,  H01S3/1301

摘要： An automatic gain controller for controlling gain values of an optical fiber amplifier. The automatic gain controller includes a first opto-electric conversion unit for converting a portion of optical signals that are input into the optical fiber amplifier into electrical signals to output the converted electrical signals. A second opto-electric conversion unit converts a portion of output optical signals output from the optical fiber amplifier into electrical signals and then outputs the converted electrical signals. A transient suppressing unit generates pulse typed waveforms when a change in channel number is generated during monitoring outputs of the first opto-electric conversion unit, and a comparing unit compares the sum of output signals of the transient suppressing unit and output signals of the first opto-electric conversion unit with output signals of the second opto-electric conversion unit. A control unit outputs pump control signals in response to the output signals of the transient suppressing unit and output signals of the comparing unit, and a first pumping light source unit supplies pumping light to the optical fiber amplifier in response to the inputting of the pump control signals.

摘要翻译： 一种用于控制光纤放大器的增益值的自动增益控制器。 自动增益控制器包括：第一光电转换单元，用于将输入到光纤放大器的光信号的一部分转换成电信号，以输出转换的电信号。 第二光电转换单元将从光纤放大器输出的输出光信号的一部分转换为电信号，然后输出转换的电信号。 当在第一光电转换单元的监视输出期间产生通道号的变化时，瞬态抑制单元产生脉冲类型波形，比较单元比较瞬态抑制单元的输出信号和第一光电转换单元的输出信号之和 电转换单元，其具有第二光电转换单元的输出信号。 控制单元响应瞬态抑制单元的输出信号和比较单元的输出信号输出泵控制信号，第一泵浦光源单元响应于泵控制的输入向泵浦光提供泵浦光 信号。

公开(公告)号：US06937388B2

公开(公告)日：2005-08-30

申请号：US10425698

申请日：2003-04-29

申请人： Kwan-Woong Song ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Kwan-Woong Song ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H01S3/06 ,  G02B6/00 ,  H01S3/067 ,  H01S3/091 ,  H01S3/10 ,  H01S3/00

CPC分类号： H04B10/291

摘要： Disclosed is an L-band optical amplifier for amplifying optical signals with the wavelength band of the L-band. The L-band optical amplifier comprises an optical-amplifying section for emitting spontaneous emission and for amplifying the optical signals by pumping of the spontaneous emission, a mirror for reflecting the optical signals amplified by the optical-amplifying section to re-enter back to the optical-amplifying section, and a feedback loop connected with both terminals of the optical-amplifying section for causing spontaneous emission emitted from the optical-amplifying section to be fed back to the optical-amplifying section.

摘要翻译： 公开了一种用于放大具有L波段的波段的光信号的L波段光放大器。 L波段光放大器包括用于发射自发发射并通过泵浦自发辐射来放大光信号的光放大部分，用于反射由光放大部分放大的光信号的反射镜重新返回到 光放大部分和与光放大部分的两端连接的反馈回路，用于使从光放大部分发出的自发发射反馈到光放大部分。

公开(公告)号：US20050185261A1

公开(公告)日：2005-08-25

申请号：US11067428

申请日：2005-02-25

申请人： Seong-Taek Hwang ,  Kwan-Woong Song

发明人： Seong-Taek Hwang ,  Kwan-Woong Song

IPC分类号： H01S3/10 ,  G02B6/00 ,  H01S3/06 ,  H01S3/067 ,  H01S3/16 ,  H01S3/23 ,  H01S3/00

CPC分类号： H01S3/2383 ,  H01S3/005 ,  H01S3/0064 ,  H01S3/06754 ,  H01S3/06758 ,  H01S3/06766 ,  H01S3/0677 ,  H01S3/1608 ,  H01S2301/04

摘要： A wide band erbium-doped fiber amplifier with a gain enhancement is provided comprising a first fiber amplifier adapted to amplify C-band components of an input optical signal, a second fiber amplifier connected to the first fiber amplifier in series while being disposed downstream from the first fiber amplifier to amplify L-band components of the input optical signal. A C/L splitter is disposed between the first and second fiber amplifiers and to split the amplified C and L-band optical signals to flow along different paths. A fiber reflector is disposed downstream from the second fiber amplifier to reflect the amplified L-band optical signal to flow backwards toward the second fiber amplifier. A circulator is disposed between the C/L splitter and the second fiber amplifier to guide the amplified L-band optical signal, reflected to flow backwards by the fiber reflector, so that the amplified L-band optical signal flows along a path different from that of optical signals applied to the circulator. A C/L combiner combines the amplified C-band optical signal split by the C/L splitter with the amplified L-band optical signal guided by the circulator, and applies the resultant optical signal to an output stage.