公开(公告)号：US20100169402A1

公开(公告)日：2010-07-01

申请号：US12400794

申请日：2009-03-10

申请人： Hung-Lin Chen ,  Yu-Min Lin ,  Dar-Zu Hsu ,  Yuan Chen ,  Chen-Yi Lee

发明人： Hung-Lin Chen ,  Yu-Min Lin ,  Dar-Zu Hsu ,  Yuan Chen ,  Chen-Yi Lee

IPC分类号： G06F17/14

CPC分类号： G06F17/142

摘要： An FFT processor is disclosed, which includes a first multi-pipelined MDC unit, a second multi-pipelined MDC unit and a switching network. The first multi-pipelined MDC unit and the second multi-pipelined MDC unit respectively employ a plurality of MDC circuits to change the positions of the delayers thereof in parallel way. By changing the operation time sequence of the signals in the first multi-pipelined MDC unit and the second multi-pipelined MDC unit, the first multi-pipelined MDC unit is able to directly send the operation results to the second multi-pipelined MDC unit through the switching network.

摘要翻译： 公开了一种FFT处理器，其包括第一多流水线MDC单元，第二多流水线MDC单元和交换网络。 第一多流水线MDC单元和第二多流水线MDC单元分别采用多个MDC电路以并行方式改变其延迟器的位置。 通过改变第一多流水线MDC单元和第二多流水线MDC单元中的信号的操作时间顺序，第一多流水线MDC单元能够直接将操作结果发送到第二多流水线MDC单元 交换网络。

公开(公告)号：US08107817B2

公开(公告)日：2012-01-31

申请号：US12464608

申请日：2009-05-12

申请人： Yu-Min Lin ,  Dar-Zu Hsu ,  Hung-Lin Chen

发明人： Yu-Min Lin ,  Dar-Zu Hsu ,  Hung-Lin Chen

IPC分类号： H04J14/02

CPC分类号： H04L27/2662 ,  H04L27/2672 ,  H04L27/2675 ,  H04L27/2697

摘要： A method for receiving an optical orthogonal frequency-division multiplexing (OFDM) signal and a receiver thereof are applicable to an optical OFDM system. The receiving method includes the following steps. An optical signal is converted into a digital signal. A symbol boundary of the digital signal is estimated. A guard interval of the digital signal is removed according to the symbol boundary, so as to generate an electrical signal. The electrical signal is converted into a plurality of frequency domain sub-carriers in a fast Fourier transform (FFT) manner. A timing offset is estimated with pilot carriers and frequency domain sub-carriers corresponding to the same symbol period. The estimated symbol boundary is compensated with the timing offset. Each frequency domain sub-carrier includes a plurality of pilot carrier signals. Through the receiving method, the timing offset arisen from chromatic dispersion of an optical fiber is effectively estimated and adopted for compensation.

摘要翻译： 用于接收光正交频分复用（OFDM）信号的方法及其接收机可应用于光OFDM系统。 接收方法包括以下步骤。 光信号被转换为数字信号。 估计数字信号的符号边界。 根据符号边界去除数字信号的保护间隔，以产生电信号。 电信号以快速傅立叶变换（FFT）方式转换成多个频域子载波。 使用对应于相同符号周期的导频载波和频域子载波来估计定时偏移。 估计的符号边界用定时偏移补偿。 每个频域子载波包括多个导频载波信号。 通过接收方式，可以有效地估计出采用光纤色散引起的定时偏移补偿。

公开(公告)号：US20080312872A1

公开(公告)日：2008-12-18

申请号：US12191310

申请日：2008-08-14

申请人： San-Liang Lee ,  Chun-Liang Yang ,  Dar-Zu Hsu

发明人： San-Liang Lee ,  Chun-Liang Yang ,  Dar-Zu Hsu

IPC分类号： G06F17/18

CPC分类号： H04L1/20

摘要： A non-sampling-based Q-factor measuring apparatus and method use a power conversion module to transform the power variation of inputted optical signals in time domain into the variation in other domains, such as optical wavelength, optical polarization and different output ports of optical elements. Taking optical wavelength as an example, different levels of power variation respond different outputs of wavelength variation through the use of a power-to-wavelength conversion module. An optical filter then separates the inputted optical signals with different wavelengths. The power average of a wavelength for its corresponding optical signals is further calculated by a photo detector. Thereby, the information of the power variation for the inputted optical signals at levels 1 and 0 can be obtained, and the Q-factor for the inputted optical signals is easily measured.

摘要翻译： 基于非采样的Q因子测量装置和方法使用功率转换模块来将时域中输入的光信号的功率变化变换成其他领域的变化，例如光学波长，光学偏振和光学不同的输出端口 元素。 以光波长为例，不同级别的功率变化通过使用功率到波长转换模块来响应波长变化的不同输出。 然后，滤光器将输入的不同波长的光信号分离。 通过光电检测器进一步计算其相应光信号的波长的功率平均值。 因此，可以获得在等级1和0的输入光信号的功率变化的信息，并且容易地测量输入的光信号的Q因子。

公开(公告)号：US20060098980A1

公开(公告)日：2006-05-11

申请号：US11026352

申请日：2004-12-30

申请人： San-Liang Lee ,  Chun-Liang Yang ,  Pei-Min Gong ,  Dar-Zu Hsu ,  Ming-Hsiao Yang ,  Yun-Lung Chou

发明人： San-Liang Lee ,  Chun-Liang Yang ,  Pei-Min Gong ,  Dar-Zu Hsu ,  Ming-Hsiao Yang ,  Yun-Lung Chou

IPC分类号： H04B10/08

CPC分类号： H04B10/07953 ,  H04B10/071 ,  H04B10/07957 ,  H04J14/02

摘要： An apparatus and a method for monitoring optical signal-to-noise ratio are provided. It can be applied in dense wavelength-division multiplexed networks to monitor the transmission quality of each optical channel. The apparatus comprises an optical circulator, a tunable optical filter, a dithering signal, a dithered reflector, and two photodiodes. It can be integrated on a single chip. The invention utilizes the dithering and reflection functions of the dithered reflector, and passes the signal and the noise through the tunable optical filter once and twice, respectively. When the tunable optical filter is scanning and filtering the whole spectrum, the signal and noise powers are measured by the two photodiodes, respectively. The OSNR for each optical channel is then calculated according to the signal and noise powers. It can monitor channel location, wavelength drift, and OSNR by including a wavelength locker to act as an optical channel analyzer.

摘要翻译： 提供了一种用于监测光信噪比的装置和方法。 它可以应用于密集的波分复用网络，以监测每个光通道的传输质量。 该装置包括光循环器，可调光滤波器，抖动信号，抖动反射器和两个光电二极管。 它可以集成在单个芯片上。 本发明利用抖动反射器的抖动和反射功能，并将信号和噪声分别通过可调光滤波器一次和两次传递。 当可调滤光器扫描和滤波整个光谱时，信号和噪声功率分别由两个光电二极管测量。 然后根据信号和噪声功率计算每个光通道的OSNR。 它可以通过包含一个波长锁定器作为光通道分析仪来监视通道位置，波长漂移和OSNR。

公开(公告)号：US06909534B2

公开(公告)日：2005-06-21

申请号：US10773180

申请日：2004-02-09

申请人： San-Liang Lee ,  Dar-Zu Hsu ,  Pei-Miin Gong

发明人： San-Liang Lee ,  Dar-Zu Hsu ,  Pei-Miin Gong

IPC分类号： G02F1/01 ,  G02F1/35 ,  G02F1/39 ,  G02F2/00 ,  G02F2/02

CPC分类号： G02F1/3536 ,  G02F2/002

摘要： The present invention provides a wavelength converter with wideband four-wave-mixing, which includes a laser diode, an optical modulator, a first and a second polarization controllers, a first, a second and a third tunable lasers, an optical coupler, a semiconductor optical amplifier (SOA) and a multiplexer. The present invention utilizes an assist beam that can improve the recovery rate and saturation power of the SOA. While the SOA is operated at a bias current close to the transparent condition for the assist beam, it does not influence the gain of the SOA wavelength converter.

摘要翻译： 本发明提供一种具有宽带四波混频的波长转换器，其包括激光二极管，光调制器，第一和第二偏振控制器，第一，第二和第三可调谐激光器，光耦合器，半导体 光放大器（SOA）和多路复用器。 本发明利用可以提高SOA的恢复速率和饱和功率的辅助光束。 当SOA以接近辅助光束的透明条件的偏置电流工作时，它不影响SOA波长转换器的增益。

公开(公告)号：US08107819B2

公开(公告)日：2012-01-31

申请号：US11756514

申请日：2007-05-31

申请人： Chun-Liang Yang ,  Dar-Zu Hsu

发明人： Chun-Liang Yang ,  Dar-Zu Hsu

IPC分类号： H01S3/00 ,  H01S4/00 ,  H04B10/00 ,  H04B10/08 ,  G02B6/00 ,  G02B26/02

CPC分类号： H04Q11/0067 ,  G02F1/09 ,  H04Q2011/0079

摘要： An optical network device of a passive optical network is introduced. The optical network device includes a light source, a control unit, and a variable optical attenuator. The light source can generate an optical signal. The control unit can generate a magnetic signal based on a control signal capable of providing information relating to a distance between the optical network device and an optical line termination. The variable optical attenuator can adjust a polarization angle of the optical signal based on the magnetic signal.

摘要翻译： 介绍了无源光网络的光网络设备。 光网络装置包括光源，控制单元和可变光衰减器。 光源可以产生光信号。 控制单元可以基于能够提供与光网络设备和光线路终端之间的距离有关的信息的控制信号来生成磁信号。 可变光衰减器可以基于磁信号调节光信号的偏振角。

公开(公告)号：US20100103506A1

公开(公告)日：2010-04-29

申请号：US12475614

申请日：2009-06-01

申请人： Chun-Liang Yang ,  Dar-Zu Hsu ,  San-Liang Lee ,  Jian-Ting Hong

发明人： Chun-Liang Yang ,  Dar-Zu Hsu ,  San-Liang Lee ,  Jian-Ting Hong

IPC分类号： H01S3/00

CPC分类号： H04B10/2971

摘要： A reconfigurable optical amplifier including a first reversible optical circulator and an optical gain device is provided. The first reversible optical circulator has four I/O ports which are respectively referred to as a first terminal, a second terminal, a third terminal, and a fourth terminal. The four I/O ports sequentially transmit an optical signal in a transmission direction of a forward circulation or a backward circulation according to a control signal. The first terminal is isolated from the adjacent fourth terminal. The optical gain device is connected between the first terminal and the adjacent fourth terminal. The second terminal and the third terminal are respectively connected to a first communication node and a second communication node.

摘要翻译： 提供了包括第一可逆光环行器和光增益器件的可重构光放大器。 第一可逆光环行器具有分别被称为第一端子，第二端子，第三端子和第四端子的四个I / O端口。 四个I / O端口根据控制信号顺序地在正向循环或后向循环的传输方向上发送光信号。 第一个终端与相邻的第四个终端隔离。 光增益装置连接在第一端子和相邻的第四端子之间。 第二终端和第三终端分别连接到第一通信节点和第二通信节点。

公开(公告)号：US20070154214A1

公开(公告)日：2007-07-05

申请号：US11475877

申请日：2006-06-28

申请人： Dar-Zu Hsu ,  San-Liang Lee

发明人： Dar-Zu Hsu ,  San-Liang Lee

IPC分类号： H04B10/08 ,  H04B17/00

CPC分类号： H04B10/07953

摘要： An apparatus and method for measuring a coherence sampling quality-factor (Q-factor) are provided, which are used to monitor quality of an optical signal in an optical network in real time. The quality is evaluated by a Q-factor. A laser diode and a wavelength converter are used in the apparatus to achieve wavelength coherence and amplification of the optical signal. Furthermore, the laser diode and an optical switch are used together to obtain an optical pulse that can be utilized to sample the optical signal. Therefore, after entering into an optoelectronic converter, a baseband signal in the optical signal is reconstructed through the amplification of the optical signal and the coupling of the optical pulse, so as to detect the Q-factor and to monitor the quality of the optical signal.

摘要翻译： 提供了用于测量相干采样质量因子（Q因子）的装置和方法，其用于实时监测光网络中的光信号的质量。 质量由Q因子评估。 在设备中使用激光二极管和波长转换器来实现光信号的波长相干和放大。 此外，激光二极管和光开关一起使用以获得可用于对光信号进行采样的光脉冲。 因此，在进入光电转换器之后，通过光信号的放大和光脉冲的耦合来重构光信号中的基带信号，以便检测Q因子并监视光信号的质量 。

公开(公告)号：US08111989B2

公开(公告)日：2012-02-07

申请号：US12506256

申请日：2009-07-21

申请人： Chun-Liang Yang ,  Dar-Zu Hsu ,  Jian-Ting Hong

发明人： Chun-Liang Yang ,  Dar-Zu Hsu ,  Jian-Ting Hong

IPC分类号： H04B10/00

CPC分类号： G02B6/2746 ,  G02B6/3546 ,  G02B6/3598 ,  G02B6/4246 ,  G02F1/093 ,  G02F1/31 ,  G02F1/3137 ,  H04Q11/0005 ,  H04Q2011/0035

摘要： An optical switch including a first reversible optical circulator and a second reversible optical circulator is provided. Each of the first reversible optical circulator and the second reversible optical circulator respectively has four I/O ports, wherein the four I/O ports are respectively a first terminal, a second terminal, a third terminal, and a fourth terminal, the four terminals sequentially transmit an optical signal in a forward circulation or a backward circulation according to a control signal, and an open end is formed between the first terminal and the adjacent fourth terminal. The open ends of the first reversible optical circulator and the second reversible optical circulator are coupled with each other.

摘要翻译： 提供了包括第一可逆光循环器和第二可逆光循环器的光开关。 第一可逆光环行器和第二可逆光循环器中的每一个分别具有四个I / O端口，其中四个I / O端口分别是第一端子，第二端子，第三端子和第四端子，四个端子 根据控制信号顺序地发送前向循环或后向循环中的光信号，并且在第一端子和相邻的第四端子之间形成开口端。 第一可逆光循环器和第二可逆光循环器的开口端彼此耦合。

公开(公告)号：US20100278531A1

公开(公告)日：2010-11-04

申请号：US12506256

申请日：2009-07-21

申请人： Chun-Liang Yang ,  Dar-Zu Hsu ,  Jian-Ting Hong

发明人： Chun-Liang Yang ,  Dar-Zu Hsu ,  Jian-Ting Hong

IPC分类号： H04J14/00 ,  G02B6/35 ,  G02F1/295

CPC分类号： G02B6/2746 ,  G02B6/3546 ,  G02B6/3598 ,  G02B6/4246 ,  G02F1/093 ,  G02F1/31 ,  G02F1/3137 ,  H04Q11/0005 ,  H04Q2011/0035

摘要： An optical switch including a first reversible optical circulator and a second reversible optical circulator is provided. Each of the first reversible optical circulator and the second reversible optical circulator respectively has four I/O ports, wherein the four I/O ports are respectively a first terminal, a second terminal, a third terminal, and a fourth terminal, the four terminals sequentially transmit an optical signal in a forward circulation or a backward circulation according to a control signal, and an open end is formed between the first terminal and the adjacent fourth terminal. The open ends of the first reversible optical circulator and the second reversible optical circulator are coupled with each other.

摘要翻译： 提供了包括第一可逆光循环器和第二可逆光循环器的光开关。 第一可逆光环行器和第二可逆光循环器中的每一个分别具有四个I / O端口，其中四个I / O端口分别是第一端子，第二端子，第三端子和第四端子，四个端子 根据控制信号顺序地发送前向循环或后向循环中的光信号，并且在第一端子和相邻的第四端子之间形成开口端。 第一可逆光循环器和第二可逆光循环器的开口端彼此耦合。