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81. 发明公开

EP1830491A4 ADAPTIVE OPTICAL RECEIVING DEVICE AND THE METHOD THEREOF 有权
标题翻译：自适应光接收机，及其方法
公开(公告)号：EP1830491A4
公开(公告)日：2008-01-23
申请号：EP04802415
申请日：2004-12-01
申请人： ZTE CORP
发明人： SHU HUADE
IPC分类号： H04B10/66
CPC分类号： H04B10/66
摘要： The present invention discloses an adaptive optical receiving device and the method thereof. Said adaptive optical receiving device includes: first and second limiting amplifiers for amplifying the smaller amplitude signal of receiving signal and shaping for output respectively; first and second clock data recovery circuits for extracting data and clock from the output signal of the first and second limiting amplifiers respectively; first and second demodulators and signal quality detection circuits for real time detecting the signal quality of the output signal of first and second clock data recovery circuits; nonloss rearrangement unit for selecting one main path based on the signal quality of the first and second DEMUX and signal quality detection circuits taking the other path as the standby path, and switching between the main path and standby path according to the control signal; a control unit for controlling every components in the main path and nonloss rearrangement unit and controlling every components in the main path to real time optimize the signal of this path.

82. 发明公开

EP1868305A1 Phase control apparatus and optical DQPSK receiver 审中-公开
标题翻译：相位控制装置和光学DQPSK接收器
公开(公告)号：EP1868305A1
公开(公告)日：2007-12-19
申请号：EP06123935.6
申请日：2006-11-13
申请人： FUJITSU LIMITED
发明人： Terayama, Yoshikazu, c/oFUJITSU Ltd. , Mizuguchi, Noriaki, c/oFUJITSU Ltd. , Ishikawa, Eiji, c/oFUJITSU Ltd. , Toyomaki, Takashi, c/oFUJITSU Ltd. , Kaburagi, Kenichi, c/oFUJITSU Ltd. , Hoshida, Takeshi, c/oFUJITSU Ltd. , Rasmussen, Jens, c/oFUJITSU Ltd. , Isomura, Akihiko, c/oFUJITSU Ltd.
IPC分类号： H04B10/158
CPC分类号： H04B10/66
摘要： A calculation processing unit controls temperature of a Peltier device based on a slope of a waveform obtained by subtracting a waveform of a B-arm monitoring signal from a waveform of an A-arm monitoring signal and a value obtained by subtracting a value B of the B-arm monitoring signal from a value A of the A-arm monitoring signal. Similarly, the calculation processing unit controls a phase of the A-arm and a phase of the B-arm. An A-arm side microcontroller controls temperature of an A-arm side heater 22 based on the value of the A-arm monitoring signal, and controls the phase of the A-arm. A B-arm side microcontroller controls temperature of a B-arm side heater based on the value B of the B-arm monitoring signal, and controls the phase of the B-arm.
摘要翻译：计算处理单元基于通过从A型臂监视信号的波形中减去B型臂监视信号的波形而获得的波形的斜率以及通过从A型臂监视信号的波形中减去B型臂监视信号的波形而获得的值来控制珀耳帖装置的温度 B臂监测信号来自A臂监测信号的值A. 类似地，计算处理单元控制A臂的相位和B臂的相位。 A臂侧微控制器基于A臂监控信号的值来控制A臂侧加热器22的温度，并且控制A臂的相位。 B臂侧微控制器基于B臂监控信号的值B控制B臂侧加热器的温度，并控制B臂的相位。

83. 发明授权

EP1536258B1 Optical transmission system, optical multiplexing transmission system, and related peripheral techniques 失效
标题翻译：一种光传输系统，光多路复用传输系统和相关方法
公开(公告)号：EP1536258B1
公开(公告)日：2007-12-12
申请号：EP05003242.4
申请日：1995-08-02
申请人： FUJITSU LIMITED
发明人： Ishikawa, George , Nishimoto, Hiroshi , Ooi, Hiroki , Sekiya, Motoyoshi , Tomofuji, Hiroaki
IPC分类号： H04J14/08 , H04B10/155 , H04B10/158 , H04Q11/04 , H04B10/16 , H04B10/17 , H04L7/00
CPC分类号： H04B10/25133 , G02F2203/21 , H04B10/0795 , H04B10/07957 , H04B10/0797 , H04B10/0799 , H04B10/25137 , H04B10/2525 , H04B10/255 , H04B10/2563 , H04B10/66 , H04B10/67 , H04B10/675 , H04B2210/252 , H04B2210/254 , H04J14/02 , H04J14/0298 , H04J14/08 , H04J14/086 , H04L7/0037 , H04L7/0075 , H04L7/027 , H04L7/06 , H04Q11/0001
摘要： The invention provides a technique for optimizing transmission conditions to achieve large-capacity transmission, and also provides peripheral techniques for the practical implementation of optical multiplexing that makes large-capacity transmission possible. A transmission characteristic is measured in a transmission characteristic measuring section (53), and control of signal light wavelength in a tunable light source (44), control of the amount of prechirping, control of the amount of dispersion compensation, and/or control of optical power are performed to achieve the best transmission characteristic. Wavelength dispersion is deliberately introduced by a dispersion compensator, to reduce nonlinear effects. A tunable laser is used to optimize signal light wavelength for each optical amplification repeater section. Peripheral techniques, such as drift compensation, clock extraction, optical signal channel identification, clock phase stabilization, etc., are provided for the implementation of optical multiplexing.

84. 发明公开

EP1845641A1 Viterbi equalizer for signals with bit alternating modulation, optical receiver and transmission system comprising the same, as well as Viterbi equalization method 有权
标题翻译：维特比均衡器用于与Wechselbitmodulation，光接收器和它的传输系统，和Viterbi Entzerrerverfahren信号
公开(公告)号：EP1845641A1
公开(公告)日：2007-10-17
申请号：EP06290635.9
申请日：2006-04-12
申请人： Alcatel Lucent
发明人： Buchali, Fred
IPC分类号： H04B10/158 , H03M13/41
CPC分类号： H04B10/66
摘要： A Viterbi equalizer (6) for signals with bit alternating modulation is characterized by a number of channel estimation units (8a, 8b) corresponding to the number of modulation states of the bit alternating modulation, the channel estimation units (8a, 8b) being operated in alternating order. An optical receiver comprises such a Viterbi equalizer (6), the latter being used in an optical transmission system. A Viterbi equalization method for signals with bit alternating modulation comprises the steps of: generating a separate channel estimation for each modulation state of the bit alternating modulation, and performing the Viterbi equalization using the channel estimations in alternating order.
摘要翻译：维特比均衡器（6），用于与比特交替的调制信号是由多个信道估计单元的表征（8A，8B）对应于比特交替调制，信道估计单元的调制状态的数目（8A，8B）被操作交替排列。一种光接收器包括寻求维特比均衡器（6），后者在一个光传输系统的维特比均衡方法对于比特交替调制信号的步骤包括：。生成用于比特交替的每个调制状态的单独的信道估计的步骤中使用调制，并以交替顺序使用所述信道估计执行所述维特比均衡。

85. 发明公开

EP1841103A1 Optical transmission system 失效
标题翻译：光传输系统
公开(公告)号：EP1841103A1
公开(公告)日：2007-10-03
申请号：EP07012705.5
申请日：1995-08-02
申请人： FUJITSU LIMITED
发明人： Ishikawa, George , Nishimoto, Hiroshi , Ooi, Hiroki , Sekiya, Motoyoshi , Tomofuji, Hiroaki
IPC分类号： H04B10/18 , H04B10/155 , G02B6/34 , G02F1/01 , H04B10/16 , H04B10/17 , H04J14/08 , H04L7/00 , H04B10/158 , H04Q11/04 , H04B10/08
CPC分类号： H04B10/25133 , G02F2203/21 , H04B10/0795 , H04B10/07957 , H04B10/0797 , H04B10/0799 , H04B10/25137 , H04B10/2525 , H04B10/255 , H04B10/2563 , H04B10/66 , H04B10/67 , H04B10/675 , H04B2210/252 , H04B2210/254 , H04J14/02 , H04J14/0298 , H04J14/08 , H04J14/086 , H04L7/0037 , H04L7/0075 , H04L7/027 , H04L7/06 , H04Q11/0001
摘要： The invention provides a technique for optimizing transmission conditions to achieve large-capacity transmission, and also provides peripheral techniques for the practical implementation of optical multiplexing that makes large-capacity transmission possible. A transmission characteristic is measured in a transmission characteristic measuring section (53), and control of signal light wavelength in a tunable light source, (44), control of the amount of prechirping, control of the amount of dispersion compensation, and/or control of optical power are performed to achieve the best transmission characteristic. Wavelength dispersion is deliberately introduced by a dispersion compensator, to reduce nonlinear effects. A tunable laser is used to optimize signal light wavelength for each optical amplification repeater section. Peripheral techniques, such as drift compensation, clock extraction, optical signal channel identification, clock phase stabilization, etc., are provided for the implementation of optical multiplexing.
摘要翻译：本发明提供了一种用于优化传输条件以实现大容量传输的技术，并且还提供了用于实现实现大容量传输的光复用的实际实现的外围技术。在传输特性测量部分（53）中测量传输特性，并且控制可调光源中的信号光波长（44），预啁啾量的控制，色散补偿量的控制和/或控制的光功率被执行以实现最佳的传输特性。波长色散是由色散补偿器故意引入的，以减少非线性效应。可调激光器用于优化每个光放大中继器部分的信号光波长。提供了诸如漂移补偿，时钟提取，光信号通道识别，时钟相位稳定等外围技术，用于实现光复用。

86. 发明公开

EP1819070A1 Clock recovery circuit and method for optical receiver 审中-公开
标题翻译： Taktrückgewinnungsschaltungund Verfahrenfüreinen digitalen optischenEmpfänger。
公开(公告)号：EP1819070A1
公开(公告)日：2007-08-15
申请号：EP06290243.2
申请日：2006-02-09
申请人： Alcatel Lucent
发明人： Bülow, Henning
IPC分类号： H04B10/158 , H04L7/00
CPC分类号： H04L7/0075 , H04B10/66 , H04L7/027 , H04L7/033
摘要： A clock recovery circuit (1a) for a digital signal (DS) comprising a clock signal and a high-frequency jitter component due to polarisation scrambling in the optical domain.
The proposed clock recovery circuit comprises:
- a first clock recovery sub-circuit (5) adapted to generate a first auxiliary clock signal (CS1) with said high-frequency jitter component at least partly removed,
- a second clock recovery sub-circuit (6) adapted to generate a second auxiliary clock signal (CS2) still comprising said high-frequency jitter component,
- a phase comparator (7) connected with the first and second clock recovery sub-circuits and adapted to compare respective phases of the first and second auxiliary clock signals to produce a high-frequency jitter signal (JS, JS') depending on a phase difference between the first and second auxiliary clock signals, and
- a phase modulator (8) connected with the first clock recovery sub-circuit and the phase comparator and adapted to modulate a phase of the first auxiliary clock signal with the high-frequency jitter signal to generate a recovered clock signal (CS).
The above-described circuit provides distortion and jitter tolerant clock recovery for optical receivers.
摘要翻译：一种用于数字信号（DS）的时钟恢复电路（1a），包括由于光域中的偏振加扰引起的时钟信号和高频抖动分量。所提出的时钟恢复电路包括： - 第一时钟恢复子电路（5），适于产生具有至少部分去除的所述高频抖动分量的第一辅助时钟信号（CS1）， - 第二时钟恢复子电路 6），其适于产生仍然包括所述高频抖动分量的第二辅助时钟信号（CS2）， - 与所述第一和第二时钟恢复子电路连接的相位比较器（7），并且适于比较所述第一和第第二辅助时钟信号，以根据第一和第二辅助时钟信号之间的相位差产生高频抖动信号（JS，JS'），以及 - 与第一时钟恢复子电路连接的相位调制器（8）和相位比较器，并且适于利用高频抖动信号来调制第一辅助时钟信号的相位，以产生恢复的时钟信号（CS）。上述电路为光接收机提供失真和抖动容忍时钟恢复。

87. 发明公开

EP1816763A1 Optical receiving apparatus and optical communication system comprising it 有权
标题翻译： Optische Empfangsvorrichtung und optisches Kommunikationssystem damit
公开(公告)号：EP1816763A1
公开(公告)日：2007-08-08
申请号：EP07009948.6
申请日：2005-12-29
申请人： Fujitsu Ltd.
发明人： Akiyama, Yuichi , Hoshida, Takeshi , Miura, Akira , Kai, Yutaka , Ooi, Hiroki , Rasmussen, Jens C. , Nakamura, Kentaro , Kuwata, Naoki , Nishizawa, Yoshinori , Takahara, Tomoo , Yuki, Masahiro
IPC分类号： H04B10/158
CPC分类号： G02F1/2255 , G02F1/0123 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50595 , H04B10/5162 , H04B10/5165 , H04B10/5561 , H04B10/66 , H04B10/677
摘要： A phase shift unit (12) provides a prescribed phase difference (π/2, for example) between a pair of optical signals transmitted via a pair of arms constituting a data modulation unit (20). A low-frequency signal f 0 is superimposed on one of the optical signals. A signal of which phase is shifted by π/2 from the low-frequency signal f 0 is superimposed on the other optical signal. A pair of the optical signals is coupled, and a part of which is converted into an electrical signal by a photodiode (3). 2f 0 component contained in the electrical signal is extracted. Bias voltage provided to the phase shift unit (12) is controlled by feedback control so that the 2f 0 component becomes the minimum.
摘要翻译：相移单元（12）在经由构成数据调制单元（20）的一对臂发送的一对光信号之间提供规定的相位差（例如，±2）。低频信号f 0叠加在一个光信号上。相位偏离低频信号f 0的信号被叠加在另一个光信号上。一对光信号被耦合，其一部分由光电二极管（3）转换成电信号。提取包含在电信号中的2f 0分量。通过反馈控制来控制提供给相移单元（12）的偏压，使得2f 0分量成为最小。

88. 发明公开

EP1816762A1 Optical receiver 有权转让
标题翻译： OptischerEmpfänger
公开(公告)号：EP1816762A1
公开(公告)日：2007-08-08
申请号：EP06010831.3
申请日：2006-05-26
申请人： OpNext Japan, Inc.
发明人： Kagaya, Osamu c/o Hitachi, Ltd. Intell.Prop.Office , Sasada, Michihide c/oHitachi,Ltd. Intell.Prop.Off.
IPC分类号： H04B10/158 , H03F1/00 , H05K1/14
CPC分类号： H04B10/66 , H03F3/087 , H05K1/023 , H05K1/0231 , H05K1/0237 , H05K1/147 , H05K2201/09236 , H05K2201/10022 , H05K2201/10121
摘要： There is provided an optical receiver in which, between an optical receiver sub-assembly and a post-amplifier on a main printed circuit board, two transmission lines on a flexible printed circuit board for connecting an optical receiver module with the main printed circuit board, a balanced-type attenuator circuit composed of four resistor elements, and two capacitor elements connected in parallel with the balanced-type attenuator circuit are provided.
摘要翻译：提供了一种光接收器，其中在主印刷电路板上的光接收器子组件和后置放大器之间，用于将光接收器模块与主印刷电路板连接的柔性印刷电路板上的两条传输线，提供由四个电阻元件组成的平衡型衰减器电路和与平衡型衰减器电路并联连接的两个电容器元件。

89. 发明公开

EP1780912A1 Method and apparatus for measuring optical power of very weak light, and optical communication system using the same 审中-公开
标题翻译：对于具有相同测量非常弱的光传输系统的光功率的方法和设备
公开(公告)号：EP1780912A1
公开(公告)日：2007-05-02
申请号：EP06022726.1
申请日：2006-10-31
申请人： NEC CORPORATION
发明人： Maeda, Wakako , Tajima, Akio , Tanaka, Akihiro , Takahashi, Seigo
IPC分类号： H04B10/158 , H04L9/08
CPC分类号： H04B10/66 , H04L9/0852
摘要： A method and apparatus for measuring the optical power of very weak light arriving at a receiver, by using a photon detector, are provided. A photon detector detects the presence or absence of the arrival of a photon in accordance with bias application timing. For a train of optical pulses coming in at an arbitrary timing in respective time slots, the bias application timing is sequentially shifted within the range of a time slot. Each time a shift is made, the number of photons detected is counted by a photon counter. Based on this number of photons, the optical power of the train of the optical pulses is measured.
摘要翻译：一种用于测量非常弱的光到达接收器的光功率的方法和设备，通过使用光子检测器，提供了。光子检测器检测光子的雅舞蹈到达与偏压施加定时的存在或不存在。用于光学脉冲序列在未来中在任意的定时中respectivement时隙，偏压施加时序被顺序地一个时隙的范围内移动。每一个移位由时间，检测到的光子的数目由一个光子计数器计数。在此基础上光子数，光脉冲串的光功率被测量。

90. 发明公开

EP1777846A1 Method and apparatus for controlling the decision point of a receiver for digital communication signals 有权
标题翻译：用于控制数字通信信号在接收器中的阈值的方法和装置
公开(公告)号：EP1777846A1
公开(公告)日：2007-04-25
申请号：EP05292228.3
申请日：2005-10-21
申请人： Alcatel Lucent
发明人： Haslach, Christoph Dr.-Ing.
IPC分类号： H04B10/158 , H04L25/06 , H03K5/08
CPC分类号： H04L25/063 , H03K5/086 , H04B10/66
摘要： A receiver for a digital communication signal has a first decision gate (DGa), which has a first decision threshold (xd) for outputting a first decision signal, a second decision gate (DGb), which has a second decision threshold (xm) for outputting a second decision signal, a counter (CNT) for counting events where the first and second decision signals of the first and second decision gates (DGa, DGb) differ from each other, and a controller (PROC) capable of controlling the decision thresholds of said first and second decision gates in accordance with count values delivered by said counter. The controller (PROC) determines an initial decision threshold value by performing a statistical analysis of the received signal and setting the decision threshold such that the distribution of logical '0' and logical '1' in the decided signal corresponds to the expected distribution, which is in typically 50% / 50%.

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