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91. 发明授权

US08818207B2 Optical transmitter 有权
标题翻译：光发射机
公开(公告)号：US08818207B2
公开(公告)日：2014-08-26
申请号：US13347405
申请日：2012-01-10
申请人： Toshiki Tanaka , Tomoo Takahara , Shoichiro Oda , Takeshi Hoshida
发明人： Toshiki Tanaka , Tomoo Takahara , Shoichiro Oda , Takeshi Hoshida
IPC分类号： H04B10/04 , H04B10/50 , H04J14/02 , H04B10/532 , H04L5/12 , H04L5/00 , H04L27/26 , H04L27/20
CPC分类号： H04J14/026 , H04B10/506 , H04B10/532 , H04J14/0298 , H04L5/0008 , H04L5/12 , H04L27/2096 , H04L27/2637 , H04L27/2642 , H04L27/2697
摘要： A clock signal from a single reference clock is frequency converted, and the frequency-converted signal is input to an equal-interval-optical-frequency-comb generator and a modulator of an optical modulator. By varying the electric frequency of the clock signal input to the equal-interval-optical-frequency-comb generator, frequency intervals of a frequency comb to be generated can be varied, while by selectively employing a particular optical frequency from among the continuous light beams of the generated frequency comb, a frequency comb having unequal intervals can be generated. It is also possible to vary the modulation rate by varying the clock frequency of a driving signal to be input to the optical modulator. By using a clock signal of a single reference clock, the frequency intervals of the frequency comb and the variation of the modulation rate synchronize with each other.
摘要翻译：来自单个参考时钟的时钟信号被频率转换，并且频率转换的信号被输入到等间隔光频率梳发生器和光调制器的调制器。通过改变输入到等间隔光频梳发生器的时钟信号的电频，可以改变要产生的频率梳的频率间隔，同时通过选择性地使用来自连续光束中的特定光频可以产生具有不等间隔的频率梳。也可以通过改变要输入到光调制器的驱动信号的时钟频率来改变调制速率。通过使用单个参考时钟的时钟信号，频率梳的频率间隔和调制速率的变化彼此同步。

92. 发明申请

US20140193152A1 SIGNAL TRANSMISSION METHOD, SIGNAL RECEIVING METHOD, PASSIVE OPTICAL NETWORK PON DEVICE, AND PON SYSTEM 有权
标题翻译：信号传输方法，信号接收方法，被动光网络PON设备和PON系统
公开(公告)号：US20140193152A1
公开(公告)日：2014-07-10
申请号：US14209221
申请日：2014-03-13
申请人： The Hong Kong Polytechnic University , Huawei Technologies Co., Ltd.
发明人： Lei ZHOU , Guo WEI , Chao LV , Dawei WANG , Botao LIU
IPC分类号： H04B10/27 , H04B10/61 , H04J14/02 , H04B10/532
CPC分类号： H04B10/27 , H04B10/532 , H04B10/614 , H04B10/6151 , H04J14/02
摘要： Embodiments of the present disclosure relate to a signal transmission method The signal receiving method includes: receiving a first transmit signal, where the first transmit signal includes a first polarized optical signal and a second polarized optical signal that are perpendicular to each other, where the first polarized optical signal is loaded with first data, the first transmit signal is an uplink signal, and the first data is uplink data, or, the first transmit signal is a downlink signal, and the first data is downlink data; splitting the first transmit signal into a first signal and a second signal according to power; separately rotating a first polarized optical signal and a second polarized optical signal of the second signal by 90 degrees; and performing coherent mixing on the rotated second signal and the first signal to obtain the first data.
摘要翻译：本公开的实施例涉及一种信号传输方法。信号接收方法包括：接收第一发射信号，其中第一发射信号包括彼此垂直的第一偏振光信号和第二偏振光信号，其中第一偏振光信号被加载第一数据，第一发送信号是上行链路信号，第一数据是上行链路数据，或者第一发送信号是下行链路信号，第一数据是下行数据; 根据功率将第一发射信号分解为第一信号和第二信号; 将第二信号的第一偏振光信号和第二偏振光信号分开旋转90度; 并对所旋转的第二信号和第一信号执行相干混合以获得第一数据。

93. 发明申请

US20140133865A1 OPTICAL MODULATION SCHEMES HAVING REDUCED NONLINEAR OPTICAL TRANSMISSION IMPAIRMENTS 有权
标题翻译：具有减少非线性光传输损害的光学调制方案
公开(公告)号：US20140133865A1
公开(公告)日：2014-05-15
申请号：US13969694
申请日：2013-08-19
申请人： Michael Andrew REIMER , Andrew D. SHINER , Shahab OVEIS GHARAN , Mahmoud TAHERZADEHBOROUJENI , Maurice O'SULLIVAN , Kim B. ROBERTS
发明人： Michael Andrew REIMER , Andrew D. SHINER , Shahab OVEIS GHARAN , Mahmoud TAHERZADEHBOROUJENI , Maurice O'SULLIVAN , Kim B. ROBERTS
IPC分类号： H04B10/532
CPC分类号： H04B10/532 , H04B10/516
摘要： A method of transmitting a data signal using an optical transmitter of an optical communications system. The optical transmitter is configured to modulate an optical carrier in successive signalling intervals to generate an optical signal. A modulation scheme is provided which comprises a multi-dimensional symbol constellation. The modulation scheme is designed such that an average degree of polarization of a modulated optical signal output from the optical transmitter has a first value when averaged across a first signalling interval, and has a second value when averaged across more than one and fewer than 100 signalling intervals. The second value is less than 10 percent of the first value. During run-time, an encoder of the optical transmitter encoding a data signal to be transmitted as symbols of the constellation, and a modulator of the optical transmitter modulating available dimensions of the optical carrier in accordance with the symbols.
摘要翻译：一种使用光通信系统的光发射机发送数据信号的方法。光发射机被配置为在连续的信令间隔中调制光载波以产生光信号。提供了一种包括多维符号星座的调制方案。调制方案被设计成使得当从第一信令间隔平均时，从光发送器输出的调制光信号的平均偏振度具有第一值，并且当平均多于一个且少于100个信令时具有第二值间隔第二个值小于第一个值的10％。在运行时间期间，光发送器的编码器编码要作为星座符号发送的数据信号，以及根据符号调制光载波的可用尺寸的光发射机的调制器。

94. 发明授权

US08660433B2 Pilot-assisted data transmission in a coherent optical-communication system 有权
标题翻译：在相干光通信系统中的导频辅助数据传输
公开(公告)号：US08660433B2
公开(公告)日：2014-02-25
申请号：US12964929
申请日：2010-12-10
申请人： Xiang Liu , Chandrasekhar Sethumadhavan
发明人： Xiang Liu , Chandrasekhar Sethumadhavan
IPC分类号： H04B10/532 , H04J14/02
CPC分类号： H04L25/0226 , H04B10/50 , H04L25/0224
摘要： In one embodiment, an optical transmission system transmits data using a format according to which a data frame has two or more pilot-symbol blocks, each having a guard interval, and two or more payload-symbol blocks that are concatenated without a guard interval between them. The use of guard intervals in the pilot-symbol blocks helps the synchronization and channel-estimation procedures performed at a receiver of the optical transmission system to be robust in the presence of certain transmission impairments. The absence of guard intervals in the payload-symbol blocks helps to minimize the transmission overhead and thus achieve relatively high payload-data throughput. Pilot-symbol blocks have a structure that enables the receiver to determine channel-response characteristics for each data frame and then apply appropriate channel-response-compensation procedures to signals corresponding to the payload-symbol blocks of the frame to recover, with a relatively low bit-error rate, the data encoded in those signals.
摘要翻译：在一个实施例中，光传输系统使用格式来传输数据，根据该格式，数据帧具有两个或更多个导频符号块，每个导频符号块具有保护间隔，以及两个或更多个有效载荷符号块，其间没有保护间隔他们。在导频符号块中使用保护间隔有助于在存在某些传输损伤的情况下在光传输系统的接收机处执行的同步和信道估计过程是鲁棒的。有效载荷符号块中没有保护间隔有助于最小化传输开销，从而实现相对较高的有效载荷数据吞吐量。导频符号块具有使得接收机能够确定每个数据帧的信道响应特性的结构，然后对相应于该帧的有效载荷符号块的信号应用适当的信道响应 - 补偿程序以相对较低的频率位错误率，这些信号中编码的数据。

95. 发明申请

US20140029945A1 POLARIZATION STABILIZATION SCHEME FOR UN-COOLED SELF-TUNING CAVITY FOR COLORLESS ULTRA BROADBAND PON 审中-公开
标题翻译：用于无色无线超宽带PON的无冷却自调谐的偏振稳定方案
公开(公告)号：US20140029945A1
公开(公告)日：2014-01-30
申请号：US14007354
申请日：2012-04-13
申请人： Mario Martinelli , Giancarlo Gavioli , Paola Galli , Domenico Di Mola , Paola Parolari , Lucia Marazzi , Luca Razzetti , Luca Suberini , Domenico Campi
发明人： Mario Martinelli , Giancarlo Gavioli , Paola Galli , Domenico Di Mola , Paola Parolari , Lucia Marazzi , Luca Razzetti , Luca Suberini , Domenico Campi
IPC分类号： H04B10/27 , H04B10/532
CPC分类号： H04B10/27 , H01S3/08054 , H01S5/02284 , H01S5/02469 , H01S5/141 , H01S5/146 , H01S5/4062 , H01S5/4087 , H04B10/532
摘要： An optical transmitter for a WDM (Wavelength Division Multiplexing) passive optical network (PON) and a WDM PON comprising such an optical transmitter are disclosed. An optical transmitter comprises first mirror and second mirrors at first end and second ends of a cavity; an optical amplifier positioned within the cavity upstream from the first mirror and for amplifying light polarized in a first polarization plane; an optical waveguide for transmitting light from the optical amplifier to the second mirror and vice versa; a first non-reciprocal polarization rotator upstream of the optical amplifier and downstream of the optical waveguide; and a second non-reciprocal polarization rotator upstream of the optical waveguide and downstream of the first mirror; wherein the first and second non-reciprocal polarization rotators rotate the polarization of the light such that light which re-enters the optical amplifier after having been reflected by the second mirror is polarized in the first polarization plane.
摘要翻译：公开了一种用于WDM（波分复用）无源光网络（PON）和包括这种光发射机的WDM PON的光发射机。光学发射器包括在腔的第一端和第二端处的第一反射镜和第二反射镜; 光放大器，位于第一反射镜上游的空腔内，用于放大在第一偏振面中偏振的光; 用于将光从光放大器传输到第二反射镜的光波导，反之亦然; 在光放大器的上游和光波导的下游的第一非倒数偏振旋转器; 以及在所述光波导上游和所述第一反射镜的下游的第二非倒数偏振旋转器; 其中所述第一和第二非可逆偏振旋转器使所述光的偏振旋转，使得在被所述第二反射镜反射之后重新进入所述光放大器的光在所述第一偏振面中被偏振。

96. 发明申请

US20050259992A1 Method of operating an optical transmission system with a bit-to-bit polarization interleaved bitstream 有权
标题翻译：操作具有比特偏振交错比特流的光传输系统的方法
公开(公告)号：US20050259992A1
公开(公告)日：2005-11-24
申请号：US11091532
申请日：2005-03-29
申请人： Gabriel Charlet , Erwan Corbel
发明人： Gabriel Charlet , Erwan Corbel
IPC分类号： H04B10/2569 , H04B10/532 , H04B10/00
CPC分类号： H04B10/532 , H04B10/2569
摘要： A method of operating an optical transmission system is described. The transmission system is provided with a bit-to-bit polarization interleaved bitstream having a given bitrate. The transmission system comprises a birefringent element and/or a decision circuit. The birefringent element and/or the decision circuit are triggered by a trigger signal having a frequency of half of the bitrate.
摘要翻译：描述了一种操作光传输系统的方法。传输系统具有给定比特率的比特偏振交织比特流。传输系统包括双折射元件和/或判定电路。双折射元件和/或判定电路由比特率的一半的频率的触发信号触发。

97. 发明申请

US20050100347A1 Optical data transmitting apparatus and method 失效
公开(公告)号：US20050100347A1
公开(公告)日：2005-05-12
申请号：US11010425
申请日：2004-12-14
申请人： Yutaka Yano
发明人： Yutaka Yano
IPC分类号： G02B6/00 , G02B6/28 , G02F1/21 , H04B10/255 , H04B10/516 , H04B10/532 , H04B10/54 , H04B10/548 , H04B10/58 , H04B10/61 , H04L25/497 , H04B10/04
CPC分类号： H04B10/532 , G02F2001/212 , H04B10/25137 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/5055 , H04B10/5167
摘要： An optical data transmitting apparatus and method allows data transmission over a distance that surpasses a limit, which has been imposed due to group velocity dispersion (GVD) and self phase modulation (SPM) effect within optical fiber. This has been accomplished by allocating trinal duobinary symbols to optical 1, P, −1 symbols. These optical symbols have the same intensity, +1 and −1 symbols have inverted optical phases each other, and orthogonally polarized each other between ±1 and P symbols. At the receiver, conventional polarization shift keying receiver can be used to restore original binary data stream.

98. 发明授权

US6134033A Method and apparatus for improving spectral efficiency in wavelength division multiplexed transmission systems 失效
标题翻译：提高波分复用传输系统频谱效率的方法和装置
公开(公告)号：US6134033A
公开(公告)日：2000-10-17
申请号：US31018
申请日：1998-02-26
申请人： Neal S. Bergano , Carl R. Davidson
发明人： Neal S. Bergano , Carl R. Davidson
IPC分类号： H04B10/2507 , H04B10/2563 , H04B10/50 , H04B10/532 , H04J14/02 , H04J14/06
CPC分类号： H04B10/2507 , H04B10/2563 , H04B10/503 , H04B10/505 , H04B10/5051 , H04B10/506 , H04B10/532 , H04J14/06 , H04J14/02
摘要： A method and apparatus is provided for transmitting an optical signal. The method includes the step of generating an optical signal that includes a plurality of optical channels, which are sequentially numbered from 1 to N from lowest to highest wavelength. A state-of-polarization of predetermined odd-numbered channels is oriented to be substantially orthogonal to a state of polarization of predetermined even-numbered channels by directing the predetermined odd-numbered channels and the predetermined even-numbered channels through orthogonally polarizing inputs of a polarization coupler. The odd-numbered channels and the even-numbered channels may be directed through first and second wavelength combiners, respectively, prior to orienting their states of polarization. The orthogonal relationship between the states of polarization of odd and even-numbered channels advantageously limits the four-wave mixing products that can be generated in the optical transmitter and the optical transmission path to which it is typically coupled.
摘要翻译：提供一种发送光信号的方法和装置。该方法包括产生包括多个光通道的光信号的步骤，它们从最低到最高波长从1到N顺序编号。通过将预定的奇数通道和预定的偶数通道通过正交通道的正交极化输入引导，预定的奇数通道的极化状态被定向为基本上与预定偶数通道的极化状态正交偏振耦合器。在定向其偏振状态之前，奇数通道和偶数通道可分别被引导通过第一和第二波长组合器。奇数和偶数通道的极化状态之间的正交关系有利地限制了可以在光发射器中产生的四波混频产物和通常耦合到其中的光传输路径。

99. 发明授权

US5862165A Variable wavelength light source using a laser, wavelength control method, optical communication system and optical communication method 失效
标题翻译：使用激光的可变波长光源，波长控制方法，光通信系统和光通信方法
公开(公告)号：US5862165A
公开(公告)日：1999-01-19
申请号：US705297
申请日：1996-08-29
申请人： Yuichi Handa , Masao Majima , Jun Nitta
发明人： Yuichi Handa , Masao Majima , Jun Nitta
IPC分类号： G02F1/01 , G02F1/025 , G02F1/09 , G02F1/313 , H01S5/00 , H01S5/042 , H01S5/062 , H01S5/0625 , H01S5/12 , H01S5/343 , H04B10/516 , H04B10/524 , H04B10/532 , H04B10/54 , H04B10/564 , H04B10/572 , H04B10/58 , H04B10/61 , H01S3/10
CPC分类号： B82Y20/00 , H01S5/0625 , H01S5/06258 , H04B10/532 , H01S2301/14 , H01S5/06236 , H01S5/06255 , H01S5/12 , H01S5/34306 , H01S5/34313
摘要： A variable wavelength light source is provided with a laser of which the oscillating state can be changed over between two oscillating states accompanied by a change of an oscillation wavelength, and an optical selection element for selecting an output light in one of the two oscillating states of the laser. The optical selection element is capable of changing over which of the output lights in the two oscillating states of the laser is to be selected. Also, by using a laser in which the oscillation wavelength in the respective oscillating states can be changed, the wavelength variation ranges in the both oscillating states can be used.
摘要翻译：可变波长光源设置有激光，其中振荡状态可以在伴随振荡波长的变化的两个振荡状态之间变化;以及光选择元件，用于选择两个振荡状态之一的输出光激光。光选择元件能够改变选择激光器的两个振荡状态中的哪个输出光。此外，通过使用其中可以改变各个振荡状态下的振荡波长的激光器，可以使用两种振荡状态下的波长变化范围。

100. 发明授权

US5757828A Semiconductor laser device, method for driving the same, and optical communication system using the same 失效
标题翻译：半导体激光装置及其驱动方法以及使用其的光通信系统
公开(公告)号：US5757828A
公开(公告)日：1998-05-26
申请号：US760415
申请日：1996-12-04
申请人： Toshihiko Ouchi
发明人： Toshihiko Ouchi
IPC分类号： H04B10/60 , B82Y20/00 , H01S5/00 , H01S5/042 , H01S5/06 , H01S5/062 , H01S5/12 , H04B10/272 , H04B10/275 , H04B10/278 , H04B10/40 , H04B10/50 , H04B10/524 , H04B10/532 , H04B10/54 , H04B10/588 , H01S3/10 , H01S3/19
CPC分类号： B82Y20/00 , H01S5/06203 , G02F2202/36 , H01S2301/14 , H01S5/06236
摘要： A semiconductor laser device includes a semiconductor substrate, an active layer formed on the substrate extending along a light propagation direction, a first light guide layer extending along the active layer to form a waveguide together with the active layer in which light waves in two different polarization modes can be propagated, a current injection unit for injecting a laser bias current into the active layer, and a control unit for supplying one of a current and a voltage to the first light guide layer independently from the laser bias current injected by the current injection unit. The first light guide layer is formed such that coupling states, in which the light waves in the two different polarization modes are respectively coupled to the active layer and the first light guide layer, can be changed independently from each other by controlling one of the current and the voltage supplied by the control unit. Centers of the light distributions of propagated light waves for the two different polarization modes can be shifted upward or downward differently from each other, so that the coupling degrees of the propagated light waves in the two polarization modes to the active layer are differently controlled to change the threshold current density for at least one of the different polarization modes.
摘要翻译：半导体激光器件包括半导体衬底，形成在沿着光传播方向延伸的衬底上的有源层，沿有源层延伸的第一导光层，与有源层一起形成波导，其中两个不同极化的光波可以传播模式，用于将激光偏置电流注入有源层的电流注入单元和用于将电流和电压中的一个独立于通过电流注入注入的激光偏置电流的第一导光层供给的控制单元单元。第一导光层形成为使得两个不同偏振模式中的光波分别耦合到有源层和第一导光层的耦合状态可以通过控制电流中的一个而彼此独立地改变和由控制单元提供的电压。用于两种不同偏振模式的传播光波的光分布的中心可以彼此不同地向上或向下偏移，使得两个偏振模式中的传播光波与有源层的耦合度被不同地控制以改变用于至少一种不同偏振模式的阈值电流密度。

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