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：US20050259988A1

公开(公告)日：2005-11-24

申请号：US10988824

申请日：2004-11-15

申请人： Dae-Kwang Jung ,  Yun-Je Oh ,  Seong-Taek Hwang

发明人： Dae-Kwang Jung ,  Yun-Je Oh ,  Seong-Taek Hwang

IPC分类号： H04J14/00 ,  H04B10/00 ,  H04B10/25 ,  H04B10/272 ,  H04J14/02

CPC分类号： H04J14/02 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282

摘要： A bi-directional optical access network is disclosed. The network includes a central office that generates a plurality of wavelength-locked downstream optical signals, multiplexes the downstream optical signals, and outputs the resultant multiplexed signal. The network also includes a remote node that demultiplexes the multiplexed signal of the downstream optical signals output from the central office, outputs the demultiplexed downstream optical signals to subscriber units, respectively, multiplexes upstream optical signals, and outputs the resultant multiplexed signal of the upstream optical signals to the central office. The subscriber units slice an associated one of the downstream optical signals to detect a portion of the associated downstream optical signal. The subscriber units generate an associated one of the upstream optical signals, which is wavelength-locked by the remaining portion of the associated downstream optical signal, and output the associated upstream optical signal to the remote node.

摘要翻译： 公开了一种双向光接入网络。 网络包括生成多个波长锁定的下行光信号的中心局，多路复用下行光信号，并输出所得到的复用信号。 该网络还包括对从中心局输出的下行光信号的复用信号进行解复用的远程节点，分别向用户单元输出解复用的下行光信号，复用上行光信号，并输出上行光信号的合成复用信号 向中心局发信号。 用户单元切割相关联的一个下行光信号以检测相关联的下行光信号的一部分。 用户单元产生相关联的一个上行光信号，其由相关联的下行光信号的剩余部分波长锁定，并将相关联的上行光信号输出到远程节点。

公开(公告)号：US06944405B2

公开(公告)日：2005-09-13

申请号：US09953637

申请日：2001-09-17

申请人： Han-Lim Lee ,  Byung-Jik Kim ,  Jun-Ho Koh ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Han-Lim Lee ,  Byung-Jik Kim ,  Jun-Ho Koh ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H04B10/00 ,  H04B10/27 ,  H04Q3/52 ,  H04Q11/00 ,  H04Q11/04 ,  H04B10/08 ,  H04B17/00

CPC分类号： H04Q11/0005 ,  H04Q2011/0016 ,  H04Q2011/0024 ,  H04Q2011/0039 ,  H04Q2011/0045

摘要： This invention provides an optical transmission with a demultiplexer for demultiplexing an input optical signal into optical signals of different channels and a multiplexer for multiplexing the optical signals outputted from the demultiplexer. The optical cross-connect device includes: N BICDR (Bit Rate Independent Clock and Data Recovery) receivers each for receiving the associated optical signals outputted from the demultiplexer, for converting the associated optical signal into an electrical signal and reproducing clocks and data based on the bit rate of the electrical signal; a switchboard with a cross-connect switch for receiving output signals from the respective N BICDR receiver; N bit rate discriminating units for receiving the output signals from the N BICDR receivers, respectively, thereby outputting bit rate discriminating signals associated with the N BICDR receivers, respectively; a temperature sensing unit for outputting a temperature sensing signal; and, a central processing unit for receiving the bit rate discriminating signals from the N bit rate discriminating unit, along with the temperature sensing signal from the temperature sensing unit, for compensating each of the received bit rate discriminating signals with a temperature-dependent bit rate value read out, based on the temperature sensing signal, from a memory, and for controlling the bit rate of the associated BICDR receiver based on the compensated bit rate.

摘要翻译： 本发明提供了一种具有解复用器的光传输器，用于将输入光信号解复用为不同信道的光信号，以及复用器，用于复用从解复用器输出的光信号。 光交叉设备包括：N个BICDR（比特率独立时钟和数据恢复）接收机，每个接收器用于接收从解复用器输出的相关联的光信号，用于将相关联的光信号转换成电信号，并基于该信号再现时钟和数据 比特率的电信号; 具有交叉连接开关的交换机，用于接收来自相应N BICDR接收机的输出信号; N比特率鉴别单元，用于分别从N个BICDR接收机接收输出信号，从而分别输出与N个BICDR接收机相关联的比特率鉴别信号; 用于输出温度感测信号的温度检测单元; 以及用于从温度感测单元接收来自N比特率鉴别单元的比特率鉴别信号的中央处理单元，用于以温度依赖比特率对每个接收的比特率鉴别信号进行补偿 基于温度感测信号从存储器读出，并且用于基于补偿的比特率来控制相关联的BICDR接收器的比特率。

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.

公开(公告)号：US20050185259A1

公开(公告)日：2005-08-25

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： H01S3/10 ,  G02B6/26 ,  G02F1/35 ,  H01S3/00 ,  H01S3/067 ,  H01S3/094 ,  H01S5/00 ,  H04J14/00

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：US20050185256A1

公开(公告)日：2005-08-25

申请号：US10888727

申请日：2004-07-09

申请人： Sang-Ho Kim ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Sang-Ho Kim ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： G02B6/42 ,  H01S3/00 ,  H01S3/067 ,  H01S3/094

CPC分类号： H01S3/06795 ,  H01S3/06758 ,  H01S3/094003

摘要： Disclosed is a broadband light source with a direct pumping structure including: a first gain medium for generating an amplified spontaneous emission; and a first pump light source connected in series to the first gain medium, for outputting a first pump light provided in the first gain medium.

摘要翻译： 公开了一种具有直接泵浦结构的宽带光源，包括：用于产生放大的自发发射的第一增益介质; 以及与第一增益介质串联连接的第一泵浦光源，用于输出设置在第一增益介质中的第一泵浦光。

公开(公告)号：US20050158049A1

公开(公告)日：2005-07-21

申请号：US10915182

申请日：2004-08-09

申请人： Gyu-Woong Lee ,  Seong-Taek Hwang

发明人： Gyu-Woong Lee ,  Seong-Taek Hwang

IPC分类号： H04B10/12 ,  H04B10/207 ,  H04J14/02 ,  H04J14/00

CPC分类号： H04J14/0221

摘要： A wavelength division multiplexed passive optical network (WDM PON) is disclosed. In one aspect, WDM-PON comprises a central office comprising a plurality of semiconductor optical amplifiers each adapted to output an optical signal modulated in accordance with data inputted thereto, and a wavelength division multiplexer adapted to multiplex the optical signals outputted from the semiconductor optical amplifiers, and a remote node connected to the central office via a main optical fiber, adapted to distribute the optical signals received, on to corresponding distribution optical fibers connected thereto, and a plurality of optical network units connected to the remote node via corresponding distribution optical fibers, the optical network units receiving from the remote node the optical signals associated therewith. In another aspect of the invention, the central office further comprises an amplifier for amplifying the multiplexed signal.

摘要翻译： 公开了一种波分复用无源光网络（WDM PON）。 一方面，WDM-PON包括一个中心局，包括多个半导体光放大器，每个半导体光放大器适于输出根据输入的数据进行调制的光信号;以及波分复用器，用于复用从半导体光放大器输出的光信号 以及经由主光纤连接到中心局的远程节点，其适于将接收到的光信号分配到相应的分配光纤上，并且经由相应的分配光纤连接到远程节点的多个光网络单元 ，从远程节点接收与其相关联的光信号的光网络单元。 在本发明的另一方面，中心局还包括用于放大多路复用信号的放大器。

公开(公告)号：US06898003B2

公开(公告)日：2005-05-24

申请号：US10284787

申请日：2002-10-31

申请人： Seong-Taek Hwang ,  Hyung-lin Kwon

发明人： Seong-Taek Hwang ,  Hyung-lin Kwon

IPC分类号： G02F1/35 ,  G02B6/34 ,  G02B6/38 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/30 ,  H04B10/2507 ,  H04B10/2525 ,  H04B10/29 ,  H04B10/291 ,  H01S3/00

CPC分类号： G02B6/29376 ,  G02B6/02261 ,  H01S3/06725 ,  H01S3/06754 ,  H01S3/10023 ,  H01S3/302 ,  H04B10/2525 ,  H04B10/2916 ,  H04B10/2941 ,  H04B2210/003

摘要： Disclosed is a dispersion-compensating, Raman optical fiber amplifier used in an optical communications system of the type having an optical transmission block for transmitting wavelength division multiplexed optical signals through a fiber and an optical receiving block for receiving the optical signals through the fiber. The inventive amplifier includes: a circulator for outputting optical signals that are inputted through a first end connected to the fiber to a second end and for outputting optical signals that are reflected through the second end to a third end connected to the fiber; a dispersion-compensating fiber for compensating optical signals passing therethrough and for outputting optical signals after performing a Raman amplification; a pumping light source for pumping the dispersion-compensating fiber and for outputting a pumping light having a designated wavelength; a wavelength selective coupler for outputting the pumping light to the dispersion-compensating fiber; and, a reflector for reflecting the Raman pumped optical signals and for reflecting the optical signals back into the dispersion-compensating fiber.

摘要翻译： 公开了一种用于具有通过光纤传输波分复用光信号的光传输块和用于通过光纤接收光信号的光接收块的光通信系统中的色散补偿拉曼光纤放大器。 本发明的放大器包括：环行器，用于输出通过连​​接到光纤的第一端输入到第二端的光信号，并用于输出通过第二端反射到连接到光纤的第三端的光信号; 用于补偿经过其中的光信号并用于在执行拉曼放大之后输出光信号的色散补偿光纤; 用于泵浦色散补偿光纤并输出具有指定波长的泵浦光的泵浦光源; 用于将所述泵浦光输出到所述色散补偿光纤的波长选择耦合器; 以及用于反射拉曼泵浦光信号并将光信号反射回色散补偿光纤的反射器。

公开(公告)号：US20050105169A1

公开(公告)日：2005-05-19

申请号：US10854347

申请日：2004-05-26

申请人： Seong-Taek Hwang ,  Chang-Sup Shim ,  Yun-Je Oh

发明人： Seong-Taek Hwang ,  Chang-Sup Shim ,  Yun-Je Oh

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

CPC分类号： H01S3/067

摘要： A wideband light source is disclosed. The wideband light source includes a first optical amplifier for generating and amplifying a C-band spontaneous emission light, a second optical amplifier for generating C-band and L-band spontaneous emission lights which is pumped by the C-band spontaneous emission light to amplify an L-band spontaneous emission light, and a reflector positioned between the first and second optical amplifiers to reflect the C-band spontaneous emission light provided from the first optical amplifier back to the first optical amplifier and the C-band and L-band spontaneous emission lights provided from the second optical amplifier back to the second optical amplifier.

摘要翻译： 公开了一种宽带光源。 宽带光源包括用于产生和放大C波段自发发射光的第一光放大器，用于产生C波段和L波段自发发射光的第二光放大器，其由C波段自发发射光泵浦以放大 L波段自发发射光和位于第一和第二光放大器之间的反射器，以将从第一光放大器提供的C波段自发发射光反射回第一光放大器，C波段和L波段自发 从第二光放大器提供的发射光返回到第二光放大器。