公开(公告)号：US20050047784A1

公开(公告)日：2005-03-03

申请号：US10780132

申请日：2004-02-17

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 ,  H04B10/07 ,  H04B10/27 ,  H04B10/272 ,  H04B10/40 ,  H04B10/50 ,  H04B10/572 ,  H04B10/60 ,  H04J14/02

CPC分类号： H04J14/0282 ,  H04B10/2587 ,  H04B10/506 ,  H04B10/572 ,  H04J14/02 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J2014/0253

摘要： An optical wavelength tracking apparatus and method in a wavelength division multiplexed (WDM) passive optical network (PON) in which a central office (CO) having a multi-frequency light source is connected to a plurality of optical network units (ONUs) having loop-back light sources through a WDM MUX/DEMUX in a remote node (RN). The power levels of downstream and upstream WDM optical signals are measured. The WDM wavelengths of the multi-frequency light source and the WDM MUX/DEMUX are controlled to be nearly identical in order to minimize the difference between the power levels of the downstream and upstream WDM optical signals.

摘要翻译： 一种波分复用（WDM）无源光网络（PON）中的光波长跟踪装置和方法，其中具有多频光源的中心局（CO）连接到具有环路的多个光网络单元（ONU） 通过远程节点（RN）中的WDM MUX / DEMUX来返回光源。 测量下行和上行WDM光信号的功率电平。 控制多频光源和WDM MUX / DEMUX的WDM波长几乎相同，以便最小化下行和上行WDM光信号的功率电平之间的差异。

公开(公告)号：US20050008362A1

公开(公告)日：2005-01-13

申请号：US10721712

申请日：2003-11-25

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： H04B10/03 ,  H04B10/032 ,  H04B10/27 ,  H04B10/272 ,  H04J3/16 ,  H04J14/00 ,  H04J14/02 ,  H04Q11/00 ,  G02F1/00

CPC分类号： H04J14/0297 ,  H04J14/0226 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/029 ,  H04Q11/0067 ,  H04Q2011/0016 ,  H04Q2011/0081

摘要： A self-healing WDM (Wavelength Division Multiplexing)—PON (Passive Optical Network) system is disclosed and includes a CO (Central Office), a RN (Remote Node) and a plurality of subscriber units. The system includes a trunk working fiber and a trunk protection fiber for connecting the CO with the RN, a distribution working fiber, and a distribution protection fiber for connecting the RN with the subscriber units. The CO is connected to the trunk working fiber and the trunk protection fiber, and contains an optical switching unit switched when an error or communication failure occurs, an upstream working optical receiver and an upstream protection optical receiver for receiving upstream data, and a downstream working light source and a downstream protection light source for transmitting downstream data. Each subscriber unit is connected to the distribution working fiber and the distribution protection fiber, and contains an optical switching unit switched when an error or communication failure occurs, a downstream working optical receiver and a downstream protection optical receiver for receiving downstream data, and an upstream working light source and an upstream protection light source for transmitting downstream data.

摘要翻译： 公开了一种自愈WDM（波分多路复用）-PON（被动光网络）系统，包括CO（中心局），RN（远端节点）和多个用户单元。 该系统包括中继线工作光纤和中继保护光纤，用于将CO与RN连接，分配工作光纤和用于将RN与用户单元连接的分布保护光纤。 CO连接到主干工作光纤和中继保护光纤，并且在发生错误或通信故障时包含切换的光交换单元，用于接收上游数据的上行工作光接收机和上游保护光接收机，以及下行工作 光源和用于传输下游数据的下游保护光源。 每个用户单元连接到分发工作光纤和分布保护光纤，并且包含当发生错误或通信故障时切换的光交换单元，用于接收下行数据的下行工作光接收机和下游保护光接收机，以及上游 工作光源和上游保护光源，用于传输下游数据。

公开(公告)号：US07369588B2

公开(公告)日：2008-05-06

申请号：US11346974

申请日：2006-02-03

申请人： Seong-Taek Hwang ,  Jong-In Shim ,  Dae-Kwang Jung

发明人： Seong-Taek Hwang ,  Jong-In Shim ,  Dae-Kwang Jung

IPC分类号： H01S3/04

CPC分类号： H01S5/024 ,  H01S5/0261 ,  H01S5/0425 ,  H01S5/0612 ,  H01S5/1096 ,  H01S2301/04 ,  H01S2301/173

摘要： Disclosed is an optical semiconductor device that provides an optical gain or optical loss depending on application of electric current. The optical semiconductor device comprises: a lower clad layer; an active layer disposed on the lower clad layer, the active layer generating optical gain or optical loss depending on injection of carriers; an upper clad layer disposed on the active layer, the upper clad layer serving to trap light in the active layer in cooperation with the lower clad layer; and a temperature control part for controlling the temperature distribution of the active layer along the light propagation axis in such a manner that temperature of the active layer varies depending on positions in the active layer.

摘要翻译： 公开了一种根据电流的应用提供光学增益或光学损耗的光学半导体器件。 光学半导体器件包括：下覆盖层; 设置在下包层上的有源层，所述有源层根据载流子的注入而产生光学增益或光损耗; 设置在有源层上的上覆层，上覆盖层用于与下包层一起配合活性层中的光; 以及温度控制部件，用于以有源层的温度根据有源层中的位置而变化的方式控制有源层沿着光传播轴的温度分布。

公开(公告)号：US07269352B2

公开(公告)日：2007-09-11

申请号：US10688568

申请日：2003-10-17

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： H04J14/02

CPC分类号： H04J14/02

摘要： A WDM (Wavelength Division Multiplexing) light source apparatus using a SOA (Semiconductor Optical Amplifier) is disclosed. The WDM light source apparatus includes N SOAs, a 1×N multiplexer/demultiplexer, and a reflective mirror. The N SOAs have one end coated with a substance of a first reflection factor and the other end coated with a substance of a second reflection factor, directly modulate their input signals into optical signals according to a high-speed data signal to be transmitted, and amplify the modulated signal. The 1×N multiplexer/demultiplexer has one end composed of N terminals and the other end composed of one terminal. The N terminals are coupled with the N SOAs. The reflective mirror having a high reflection factor is connected to one terminal of the 1×N multiplexer/demultiplexer to reflect a signal received from the 1×N multiplexer/demultiplexer.

摘要翻译： 公开了使用SOA（半导体光放大器）的WDM（波分复用）​​光源装置。 WDM光源装置包括N个SOA，1×N个多路复用器/解复用器和反射镜。 N个SOAs的一端涂有第一反射因子的物质，另一端涂覆有第二反射因子的物质，根据要传输的高速数据信号将其输入信号直接调制成光信号;以及 放大调制信号。 1xN多路复用器/解复用器的一端由N个终端组成，另一端由一个终端组成。 N个终端与N个SOA相连。 具有高反射因数的反射镜连接到1xN多路复用器/解复用器的一个端子，以反映从1xN多路复用器/解复用器接收的信号。

公开(公告)号：US20070014576A1

公开(公告)日：2007-01-18

申请号：US11403757

申请日：2006-04-13

申请人： Sung-Bum Park ,  Seong-Taek Hwang ,  Hyun-Soo Kim ,  Dae-Kwang Jung ,  Hong-Seok Shin ,  Dong-Jae Shin

发明人： Sung-Bum Park ,  Seong-Taek Hwang ,  Hyun-Soo Kim ,  Dae-Kwang Jung ,  Hong-Seok Shin ,  Dong-Jae Shin

IPC分类号： H04J14/02

CPC分类号： H04J14/0216 ,  H04J14/0208

摘要： A bidirectional add/drop multiplexer includes first input/output unit inputs a first optical signal multiplexed from a plurality of odd channels and outputs a second optical signal multiplexed from a plurality of added or dropped even channels; a second input/output unit outputs the first optical signal multiplexed from a plurality of added or dropped odd channels and outputs the second optical signal multiplexed from a plurality of even channels; an optical arrayed waveguide grating for multiplexing added or dropped odd channels of the first optical signal input to a first terminal for subsequent transmission to the second input/output unit, multiplexing added or dropped even channels of the second optical signal input to a second terminal for subsequent transmission to the first input/output unit; and an optical combining unit that amplifies the first optical signal and the second optical signal input from the first input/output unit and the second input/output unit.

摘要翻译： 双向分插复用器包括：第一输入/输出单元输入从多个奇数通道复用的第一光信号，并输出从多个相加或丢弃的偶数通道中复用的第二光信号; 第二输入/输出单元输出从多个相加或丢弃的奇数信道复用的第一光信号，并输出从多个偶数信道复用的第二光信号; 光学阵列波导光栅，用于将第一光信号输入的添加或丢弃的奇数通道复用到第一终端，用于随后传输到第二输入/输出单元，将输入的第二光信号的偶数或偶数的偶数通道复用到第二终端， 随后传输到第一输入/输出单元; 以及光合成单元，其放大从第一输入/输出单元和第二输入/输出单元输入的第一光信号和第二光信号。

公开(公告)号：US07123633B2

公开(公告)日：2006-10-17

申请号：US10691392

申请日：2003-10-22

申请人： Dong-Jae Shin ,  Dae-Kwang Jung ,  Jea-Hyuck Lee ,  Seong-Taek Hwang ,  Yun-Je Oh

发明人： Dong-Jae Shin ,  Dae-Kwang Jung ,  Jea-Hyuck Lee ,  Seong-Taek Hwang ,  Yun-Je Oh

IPC分类号： H01S3/098 ,  H04J14/02

CPC分类号： H04J14/02 ,  H01S5/0268 ,  H01S5/0608 ,  H01S5/0654 ,  H01S5/0656 ,  H01S5/4006 ,  H01S5/4087

摘要： A method for maintaining the mode-locked state of a Fabry-Perot (FP) laser and a WDM light source using the same method for use in WDM optical communication are disclosed. The mode-locked state can be maintained irrespective of temperature change, without use of a temperature controller, by spectrum-slicing the incoherent light generated by a light source element and injecting the spectrum-sliced light to the FP laser, then the FP laser amplifies and outputs only a lasing mode coinciding with the wavelength of the injected light, wherein a lasing-mode interval of the FP laser is set to be less than a 3 dB linewidth of the injected light, so that at least one lasing mode exists inside the 3 dB linewidth of the injected light irrespective of changes in external temperature.

摘要翻译： 公开了一种使用与WDM光通信相同的方法来维持法布里 - 珀罗（FP）激光器和WDM光源的锁模状态的方法。 通过对光源元件产生的非相干光进行频谱分片，并将光谱切片光注入到FP激光器中，不管温度变化如何，可以保持模式锁定状态而不使用温度控制器，然后FP激光放大 并且仅输出与注入的光的波长一致的激光模式，其中FP激光器的激光模式间隔被设置为小于注入的光的3dB线宽，使得至少一个激光模式存在于 不管外部温度的变化，注入光线的3dB线宽。

公开(公告)号：US20060171430A1

公开(公告)日：2006-08-03

申请号：US11346974

申请日：2006-02-03

申请人： Seong-Taek Hwang ,  Jong-In Shim ,  Dae-Kwang Jung

发明人： Seong-Taek Hwang ,  Jong-In Shim ,  Dae-Kwang Jung

IPC分类号： H01S3/04

CPC分类号： H01S5/024 ,  H01S5/0261 ,  H01S5/0425 ,  H01S5/0612 ,  H01S5/1096 ,  H01S2301/04 ,  H01S2301/173

摘要： Disclosed is an optical semiconductor device that provides an optical gain or optical loss depending on application of electric current. The optical semiconductor device comprises: a lower clad layer; an active layer disposed on the lower clad layer, the active layer generating optical gain or optical loss depending on injection of carriers; an upper clad layer disposed on the active layer, the upper clad layer serving to trap light in the active layer in cooperation with the lower clad layer; and a temperature control part for controlling the temperature distribution of the active layer along the light propagation axis in such a manner that temperature of the active layer varies depending on positions in the active layer.

摘要翻译： 公开了一种根据电流的应用提供光学增益或光学损耗的光学半导体器件。 光学半导体器件包括：下覆盖层; 设置在下包层上的有源层，所述有源层根据载流子的注入而产生光学增益或光损耗; 设置在有源层上的上覆层，上覆盖层用于与下包层一起配合活性层中的光; 以及温度控制部件，用于以有源层的温度根据有源层中的位置而变化的方式控制有源层沿着光传播轴的温度分布。

公开(公告)号：US20060165412A1

公开(公告)日：2006-07-27

申请号：US11270145

申请日：2005-11-09

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

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

IPC分类号： H04J14/00

CPC分类号： H04J14/0291 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/0247 ,  H04J14/025 ,  H04J14/0252 ,  H04J14/0282 ,  H04J2014/0253

摘要： Disclosed is a self-healing passive optical network comprising: a station, such as a central office, for outputting first and second multiplexed downstream optical signals to first and second feeder fibers; a remote node connected to the central office through the first and second feeder fibers to demultiplex each input multiplexed downstream optical signal into a plurality of downstream optical signals and to output the demultiplexed downstream optical signals; and a plurality of optical network units for receiving one or more downstream optical signals, each of the optical network units are connected to the remote node through at least one distribution fiber, wherein the station outputs the first and second multiplexed downstream optical signals to the first and second feeder fibers, respectively, and outputs the first and second multiplexed downstream optical signals to one of the first and second feeder fibers when a defect occurs in a fiber.

摘要翻译： 公开了一种自愈无源光网络，包括：诸如中心局的站，用于将第一和第二多路复用的下行光信号输出到第一和第二馈送光纤; 通过第一和第二馈送光纤连接到中心局的远程节点，将每个输入的多路复用下行光信号解复用为多个下行光信号，并输出解复用的下行光信号; 以及多个光网络单元，用于接收一个或多个下行光信号，每个光网络单元通过至少一个分配光纤连接到远程节点，其中，站将第一和第二多路复用下行光信号输出到第一 和第二馈电光纤，并且当光纤中出现缺陷时，将第一和第二多路复用的下行光信号输出到第一和第二馈送光纤之一。

公开(公告)号：US07073956B1

公开(公告)日：2006-07-11

申请号：US11185040

申请日：2005-07-20

申请人： Dong-Jae Shin ,  Chang-Sup Shim ,  Seong-Taek Hwang ,  Dae-Kwang Jung

发明人： Dong-Jae Shin ,  Chang-Sup Shim ,  Seong-Taek Hwang ,  Dae-Kwang Jung

IPC分类号： G02B6/36

CPC分类号： G02B6/4246 ,  G02B6/2706 ,  G02B6/29361 ,  G02B6/29385

摘要： Disclosed are an optical transceiver and an passive optical network using the same. The optical transceiver includes a polarization splitter for splitting injected light input from an outside of the optical transceiver into a first polarization component and a second polarization component, a light injected transmitter for receiving the first polarization component and outputting an optical signal generated based on the first polarization component, and an optical receiver for detecting an electrical signal based on the second polarization component.

摘要翻译： 公开了一种光收发器和使用其的无源光网络。 光收发器包括：偏振分离器，用于将从光收发器的外部输入的注入光分成第一偏振分量和第二偏振分量;光注入发射器，用于接收第一偏振分量，并输出基于第一偏振分量产生的光信号 偏振分量和用于基于第二偏振分量检测电信号的光接收器。

公开(公告)号：US20060045525A1

公开(公告)日：2006-03-02

申请号：US11199490

申请日：2005-08-08

申请人： Gyu-Woong Lee ,  Seong-Taek Hwang ,  Jae-Hoon Lee ,  Chang-Sup Shim ,  Yun-Je Oh ,  Yong-Gyoo Kim ,  Dae-Kwang Jung

发明人： Gyu-Woong Lee ,  Seong-Taek Hwang ,  Jae-Hoon Lee ,  Chang-Sup Shim ,  Yun-Je Oh ,  Yong-Gyoo Kim ,  Dae-Kwang Jung

IPC分类号： H04J14/00

CPC分类号： H04B10/25753 ,  H04B10/25752 ,  H04J14/02 ,  H04J14/0226 ,  H04J14/0227 ,  H04J14/0246 ,  H04J14/025 ,  H04J14/0282 ,  H04J14/0298

摘要： A wavelength division multiplexed optical access network including a central office for multiplexing first optical signals used for transmitting a high-speed wire data service to a subscriber side and second optical signals used for transmitting a wireless data service to a remote subscriber terminal, a remote node connected to the central office through an optical fiber and for de-multiplexing a multiplexed optical signal received from the central office, a plurality of subscribers connected to the remote node, each subscriber receiving a first optical signal having a corresponding wavelength from among the de-multiplexed first optical signals, and a plurality of radio access units connected to the remote node, each radio access unit converting a second optical signal having a corresponding wavelength from among the de-multiplexed second optical signals into a wireless electric signal and wirelessly transmitting the wireless electric signal.

摘要翻译： 一种波分多路复用光接入网络，包括用于将用于向用户侧发送高速有线数据业务的第一光信号复用的中心局和用于向远程用户终端发送无线数据业务的第二光信号，远端节点 通过光纤连接到中心局，并且对从中心局接收的多路复用的光信号进行去多路复用，多个用户连接到远程节点，每个用户接收到具有相应波长的第一光信号， 多路复用的第一光信号和连接到远程节点的多个无线电接入单元，每个无线电接入单元将具有相应波长的第二光信号从解复用的第二光信号中转换成无线电信号，并无线地发送无线 电信号。