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1. 发明申请

US20120020676A1 APPARATUS FOR RECEIVING OPTICAL SIGNAL AND METHOD OF CONTROLLING PHASE OFFSET FOR DIFFERENTIAL QUADRATURE PHASE SHIFT KEYING 有权
标题翻译：用于接收光信号的装置和用于差分相位相移键控的相位偏移的方法
公开(公告)号：US20120020676A1
公开(公告)日：2012-01-26
申请号：US12912870
申请日：2010-10-27
申请人： Hwan-Seok Chung , Sun-Hyok Chang , Jyung-Chan Lee , Kwang-Joon Kim
发明人： Hwan-Seok Chung , Sun-Hyok Chang , Jyung-Chan Lee , Kwang-Joon Kim
IPC分类号： H04B10/06
CPC分类号： H04B10/677
摘要： An apparatus for receiving optical signals in DQPSK and method of controlling a phase offset in receiving optical signals for DQPSK is provided. An original optical signal modulated in DQPSK is received. The original optical signal is delayed by one bit to make a delay optical signal such that an interference on the original optical signal and the delay optical signal is performed. A control signal is generated by use of an interference result between the original optical signal and the delay optical signal. A phase offset for the interference between the original optical signal and the delay optical signal is controlled by use of the generated control signal. In receiving optical signals, the phase offset between the delay optical signal and the original optical signal is precisely controlled, thereby optimizing the transfer characteristics of an optical delay interferometer.
摘要翻译：提供一种用于接收DQPSK中的光信号的装置以及控制接收用于DQPSK的光信号的相位偏移的方法。接收以DQPSK调制的原始光信号。原始光信号被延迟一位以产生延迟光信号，使得对原始光信号和延迟光信号的干扰被执行。通过使用原始光信号和延迟光信号之间的干扰结果来产生控制信号。通过使用所生成的控制信号来控制原始光信号与延迟光信号之间的干扰的相位偏移。在接收光信号时，精确控制延迟光信号与原始光信号之间的相位偏移，从而优化光延迟干涉仪的传输特性。

2. 发明授权

US08565620B2 Apparatus for receiving optical signal and method of controlling phase offset for differential quadrature phase shift keying 有权
标题翻译：用于接收光信号的装置和用于差分正交相移键控的相位偏移控制方法
公开(公告)号：US08565620B2
公开(公告)日：2013-10-22
申请号：US12912870
申请日：2010-10-27
申请人： Hwan-Seok Chung , Sun-Hyok Chang , Jyung-Chan Lee , Kwang-Joon Kim
发明人： Hwan-Seok Chung , Sun-Hyok Chang , Jyung-Chan Lee , Kwang-Joon Kim
IPC分类号： H04B10/06
CPC分类号： H04B10/677
摘要： An apparatus for receiving optical signals in DQPSK and method of controlling a phase offset in receiving optical signals for DQPSK is provided. An original optical signal modulated in DQPSK is received. The original optical signal is delayed by one bit to make a delay optical signal such that an interference on the original optical signal and the delay optical signal is performed. A control signal is generated by use of an interference result between the original optical signal and the delay optical signal. A phase offset for the interference between the original optical signal and the delay optical signal is controlled by use of the generated control signal. In receiving optical signals, the phase offset between the delay optical signal and the original optical signal is precisely controlled, thereby optimizing the transfer characteristics of an optical delay interferometer.
摘要翻译：提供一种用于接收DQPSK中的光信号的装置以及控制接收用于DQPSK的光信号的相位偏移的方法。接收以DQPSK调制的原始光信号。原始光信号被延迟一位以产生延迟光信号，使得对原始光信号和延迟光信号的干扰被执行。通过使用原始光信号和延迟光信号之间的干扰结果来产生控制信号。通过使用所生成的控制信号来控制原始光信号与延迟光信号之间的干扰的相位偏移。在接收光信号时，精确控制延迟光信号与原始光信号之间的相位偏移，从而优化光延迟干涉仪的传输特性。

3. 发明授权

US08532501B2 Apparatus for receiving optical signal and method of controlling phase offset for differential quadrature phase shift keying 有权
公开(公告)号：US08532501B2
公开(公告)日：2013-09-10
申请号：US12912870
申请日：2010-10-27
申请人： Hwan-Seok Chung , Sun-Hyok Chang , Jyung-Chan Lee , Kwang-Joon Kim
发明人： Hwan-Seok Chung , Sun-Hyok Chang , Jyung-Chan Lee , Kwang-Joon Kim
IPC分类号： H04B10/06
摘要： An apparatus for receiving optical signals in DQPSK and method of controlling a phase offset in receiving optical signals for DQPSK is provided. An original optical signal modulated in DQPSK is received. The original optical signal is delayed by one bit to make a delay optical signal such that an interference on the original optical signal and the delay optical signal is performed. A control signal is generated by use of an interference result between the original optical signal and the delay optical signal. A phase offset for the interference between the original optical signal and the delay optical signal is controlled by use of the generated control signal. In receiving optical signals, the phase offset between the delay optical signal and the original optical signal is precisely controlled, thereby optimizing the transfer characteristics of an optical delay interferometer.

4. 发明授权

US08681885B2 OFDM receiver and method for compensating for I/Q imbalance 失效
标题翻译： OFDM接收机和补偿I / Q不平衡的方法
公开(公告)号：US08681885B2
公开(公告)日：2014-03-25
申请号：US12872506
申请日：2010-08-31
申请人： Hwan-Seok Chung , Sun-Hyok Chang , Kwang-Joon Kim
发明人： Hwan-Seok Chung , Sun-Hyok Chang , Kwang-Joon Kim
IPC分类号： H04K1/10
CPC分类号： H04L27/2647 , H04L27/0014 , H04L27/2657 , H04L27/364
摘要： An OFDM receiver for compensating for I/Q imbalance is provided. The OFDM receiver includes an I/Q demodulator demodulating a received signal into a baseband in-phase (I) channel signal and a baseband quadrature (Q) channel signal, and an I/Q imbalance compensator compensating for imbalance between the I-channel signal and the Q-channel signal in a time domain. Accordingly, it is possible to solve the I/Q imbalance and suppress degradation in the performance of the OFDM communication device.
摘要翻译：提供了用于补偿I / Q不平衡的OFDM接收机。 OFDM接收机包括将接收信号解调为基带同相（I）信道信号和基带正交（Q）信道信号的I / Q解调器，以及补偿I信道信号之间的不平衡的I / Q不平衡补偿器和时域中的Q信道信号。因此，可以解决I / Q不平衡并且抑制OFDM通信设备的性能的劣化。

5. 发明授权

US08116623B2 Multi-ring network operating method and system 有权
标题翻译：多环网络运行方式和系统
公开(公告)号：US08116623B2
公开(公告)日：2012-02-14
申请号：US12127493
申请日：2008-05-27
申请人： Hwan-Seok Chung , Sun-Hyok Chang , Sang-Soo Lee , Kwang-Joon Kim
发明人： Hwan-Seok Chung , Sun-Hyok Chang , Sang-Soo Lee , Kwang-Joon Kim
IPC分类号： H04B10/00
CPC分类号： H04J14/0283 , H04J14/0204 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04J14/0286 , H04J14/0294 , H04J14/0295 , H04Q2011/0081 , H04Q2011/0092
摘要： Provided is a multi-ring network operating method of cross-connecting at least two ring networks, the method including connecting an input working ring and an input protection ring of a ring network to an output working ring and an output protection ring of another ring network and then performing cross-connection between the same or different ring networks by using a multi-dimensional cross-connect apparatus. In the multi-ring operating method, a plurality of ring networks can be connected regardless of the protection method used by the ring networks, and the original protection method of each ring network can remain after they are connected.
摘要翻译：提供一种交换连接至少两个环网的多环网操作方法，该方法包括将环网的输入工作环和输入保护环连接到另一环网的输出工作环和输出保护环然后通过使用多维交叉连接装置在相同或不同的环形网络之间执行交叉连接。在多环操作方法中，无论环网使用的保护方式如何，都可以连接多个环网，每个环网的原始保护方法可以在连接后保留。

6. 发明申请

US20110090992A1 OFDM RECEIVER AND METHOD FOR COMPENSATING FOR I/Q IMBALANCE 失效
标题翻译： OFDM接收机和用于补偿I / Q不平衡的方法
公开(公告)号：US20110090992A1
公开(公告)日：2011-04-21
申请号：US12872506
申请日：2010-08-31
申请人： Hwan-Seok CHUNG , Sun-Hyok Chang , Kwang-Joon Kim
发明人： Hwan-Seok CHUNG , Sun-Hyok Chang , Kwang-Joon Kim
IPC分类号： H04L27/22
CPC分类号： H04L27/2647 , H04L27/0014 , H04L27/2657 , H04L27/364
摘要： An OFDM receiver for compensating for I/Q imbalance is provided. The OFDM receiver includes an I/Q demodulator demodulating a received signal into a baseband in-phase (I) channel signal and a baseband quadrature (Q) channel signal, and an I/Q imbalance compensator compensating for imbalance between the I-channel signal and the Q-channel signal in a time domain. Accordingly, it is possible to solve the I/Q imbalance and suppress degradation in the performance of the OFDM communication device.
摘要翻译：提供了用于补偿I / Q不平衡的OFDM接收机。 OFDM接收机包括将接收信号解调为基带同相（I）信道信号和基带正交（Q）信道信号的I / Q解调器，以及补偿I信道信号之间的不平衡的I / Q不平衡补偿器和时域中的Q信道信号。因此，可以解决I / Q不平衡并且抑制OFDM通信设备的性能的劣化。

7. 发明申请

US20110026924A1 OFDM OPTICAL TRANSMITTER AND OPTICAL TRANSMISSION METHOD 审中-公开
标题翻译： OFDM光学发射机和光传输方法
公开(公告)号：US20110026924A1
公开(公告)日：2011-02-03
申请号：US12821465
申请日：2010-06-23
申请人： Hwan-Seok Chung , Sun-Hyok Chang , Kwang-Joon Kim
发明人： Hwan-Seok Chung , Sun-Hyok Chang , Kwang-Joon Kim
IPC分类号： H04J14/02 , H04B10/04
CPC分类号： H04B10/5055 , H04B10/548 , H04L27/2626 , H04L27/2697
摘要： An OFDM optical transmitter and optical transmission method is provided. The OFDM optical transmitter includes a signal converter controlling amplitude of each of data signals according to a position of each of the data signals and converting the controlled data signal into a time-domain signal. Accordingly, it is possible to generate optical OFDM carriers which are uniform in size.
摘要翻译：提供了一种OFDM光发射机和光传输方法。 OFDM光发射机包括信号转换器，其根据每个数据信号的位置控制每个数据信号的幅度，并将受控数据信号转换成时域信号。因此，可以生成尺寸一致的光OFDM载波。

8. 发明申请

US20080317466A1 MULTI-RING NETWORK OPERATING METHOD AND SYSTEM 有权
标题翻译：多环网操作方法与系统
公开(公告)号：US20080317466A1
公开(公告)日：2008-12-25
申请号：US12127493
申请日：2008-05-27
申请人： Hwan-Seok Chung , Sun-Hyok Chang , Sang-Soo Lee , Kwang-Joon Kim
发明人： Hwan-Seok Chung , Sun-Hyok Chang , Sang-Soo Lee , Kwang-Joon Kim
IPC分类号： H04J14/00
CPC分类号： H04J14/0283 , H04J14/0204 , H04J14/0209 , H04J14/0212 , H04J14/0213 , H04J14/0286 , H04J14/0294 , H04J14/0295 , H04Q2011/0081 , H04Q2011/0092
摘要： Provided is a multi-ring network operating method of cross-connecting at least two ring networks, the method including connecting an input working ring and an input protection ring of a ring network to an output working ring and an output protection ring of another ring network and then performing cross-connection between the same or different ring networks by using a multi-dimensional cross-connect apparatus. In the multi-ring operating method, a plurality of ring networks can be connected regardless of the protection method used by the ring networks, and the original protection method of each ring network can remain after they are connected.
摘要翻译：提供一种交换连接至少两个环网的多环网操作方法，该方法包括将环网的输入工作环和输入保护环连接到另一环网的输出工作环和输出保护环然后通过使用多维交叉连接装置在相同或不同的环形网络之间执行交叉连接。在多环操作方法中，无论环网使用的保护方式如何，都可以连接多个环网，每个环网的原始保护方法可以在连接后保留。

9. 发明授权

US06529319B2 Automatic gain-controlled optical fiber amplifier 失效
标题翻译：自动增益控制光纤放大器
公开(公告)号：US06529319B2
公开(公告)日：2003-03-04
申请号：US09827211
申请日：2001-04-06
申请人： Ji-Wook Youn , Kwang-Joon Kim , Hee-Sang Chung , Jong-Hyun Lee
发明人： Ji-Wook Youn , Kwang-Joon Kim , Hee-Sang Chung , Jong-Hyun Lee
IPC分类号： H04B1012
CPC分类号： H01S3/06754 , H01S3/06758 , H01S3/10015 , H01S3/1301 , H01S2301/04
摘要： The present invention is to provide an automatic gain-controlled optical fiber amplifier, comprising: a first optical branch for branching a portion of an optical signal inputted into the optical fiber amplifier; a second optical branch for branching a portion of an optical signal outputted from the optical fiber amplifier; an optical distributor for receiving the optical signal of an input side branched partially by the first optical branch and for outputting it separately; a first wavelength selector for receiving the optical signal of a one side distributed by the optical distributor and for selecting a predetermined wavelength optical signal; a second wavelength selector for receiving the optical signal of an output side branched partially by the second optical branch and for selecting the predetermined wavelength optical signal; a signal processor for receiving the optical signal of a second side distributed by the optical distributor and the predetermined wavelength optical signal selected by the first and second optical wavelength selector and for measuring a total power of an input signal and a number of input channels; and a controller for generating a control signal according to the total power of the input signal and the number of input channels measured by the signal processor.
摘要翻译：本发明提供一种自动增益控制光纤放大器，包括：第一光分路，用于分支输入到光纤放大器的光信号的一部分; 第二光分支，用于分支从所述光纤放大器输出的光信号的一部分; 光分配器，用于接收由第一光分支部分地分支的输入侧的光信号，并分别输出; 第一波长选择器，用于接收由光分配器分配的一侧的光信号并用于选择预定波长的光信号; 第二波长选择器，用于接收由第二光分支部分分支并用于选择预定波长光信号的输出侧的光信号; 信号处理器，用于接收由光分配器分配的第二侧的光信号和由第一和第二光波长选择器选择的预定波长光信号，并用于测量输入信号和多个输入通道的总功率; 以及控制器，用于根据输入信号的总功率和由信号处理器测量的输入通道的数量产生控制信号。

10. 发明授权

US07676155B2 Dynamic wavelength allocation device using 3R wavelength converter having limited wavelength conversion range and method thereof 有权
标题翻译：使用具有有限波长转换范围的3R波长转换器的动态波长分配装置及其方法
公开(公告)号：US07676155B2
公开(公告)日：2010-03-09
申请号：US11633170
申请日：2006-12-04
申请人： Yun-Hee Cho , Kwang-Joon Kim
发明人： Yun-Hee Cho , Kwang-Joon Kim
IPC分类号： H04J14/00
CPC分类号： H04J14/0227 , H04J14/0212 , H04J14/0241 , H04J14/0284
摘要： In a wavelength allocation method in a wavelength division multiplexing network, a 3R wavelength converter having a limited wavelength conversion range is disposed according to a wavelength conversion band of each node, at least one path set between transmitting/receiving nodes is selected, routing paths corresponding to the number of the selected at least one path set between the transmitting/receiving nodes having a request for a new optical path generation are extracted, it is determined whether there is a wavelength consecutive segment set that satisfies a maximum transmission distance for guaranteeing transmission quality of an optical signal and that includes one consecutive wavelength among the extracted routing paths, and a path using a first-fit wavelength is selected from paths of each wavelength consecutive segment and the wavelength is allocated when determining that there is a wavelength consecutive segment set.
摘要翻译：在波分复用网络中的波长分配方法中，根据每个节点的波长转换带布置具有有限波长转换范围的3R波长转换器，选择发送/接收节点之间设置的至少一个路径，对应的路由路径提取具有对新的光路生成的请求的发送/接收节点之间的所选择的至少一个路径集合的数量，确定是否存在满足用于保证传输质量的最大传输距离的波长连续段集合并且在所提取的路由路径中包括一个连续波长，并且从每个波长连续片段的路径中选择使用第一拟合波长的路径，并且当确定存在波长连续片段集时分配波长。

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