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1. 发明公开

EP2763333A1 Optical transmitter and modulated optical signal generating method 失效
标题翻译： Optischer Sender und moduliertes optisches Signalerzeugungsverfahren
公开(公告)号：EP2763333A1
公开(公告)日：2014-08-06
申请号：EP13198024.5
申请日：2013-12-18
申请人： FUJITSU LIMITED
发明人： Akiyama, Yuichi , Hoshida, Takeshi , Akashi, Tamotsu , Sakai, Yoshio
IPC分类号： H04B10/2513 , H04B10/50
CPC分类号： H04B10/532 , H04B10/2513 , H04B10/25137 , H04B10/50597 , H04B2210/254
摘要： An optical transmitter includes: an optical modulator (15) including a first modulation unit and a second modulation unit respectively configured to propagate a first optical signal and a second optical signal that are obtained by splitting input light; a signal generator (20) configured to generate a first drive signal and a second drive signal that are respectively supplied to the first modulation unit and the second modulation unit; a phase controller (35) configured to control a phase difference between the first optical signal and the second optical signal in the optical modulator; and a phase difference detector (36) configured to detect the phase difference between the first optical signal and the second optical signal controlled by the phase controller. The signal generator generates the first drive signal and the second drive signal based on the phase difference detected by the phase difference detector.
摘要翻译：一种光发射机包括：光调制器（15），包括第一调制单元和第二调制单元，第二调制单元和第二调制单元分别被配置为传播通过分割输入光获得的第一光信号和第二光信号; 信号发生器（20），被配置为产生分别提供给所述第一调制单元和所述第二调制单元的第一驱动信号和第二驱动信号; 相位控制器（35），被配置为控制所述光调制器中的所述第一光信号和所述第二光信号之间的相位差; 以及相位差检测器（36），被配置为检测由所述相位控制器控制的所述第一光信号和所述第二光信号之间的相位差。信号发生器基于由相位差检测器检测的相位差产生第一驱动信号和第二驱动信号。

2. 发明公开

EP1708389A1 Optical communication system, PMD precompensation method, optical transmission station, and opitcal receiver station 有权
标题翻译：一种光传输系统，方法，用于预补偿PMD，光学发射和接收台
公开(公告)号：EP1708389A1
公开(公告)日：2006-10-04
申请号：EP05016175.1
申请日：2005-07-26
申请人： FUJITSU LIMITED
发明人： Izumi, Futoshi
IPC分类号： H04B10/18 , H04B10/155 , H04B10/158
CPC分类号： H04B10/505 , H04B10/2572 , H04B10/5053 , H04B10/50597 , H04B10/58 , H04B10/66 , H04B2210/254 , H04J14/06
摘要： In an optical communication system, a pre-compensation is conducted for an influence of a polarization dispersion and a polarization dependent loss, which an optical signal transmitted from a transmitter station to a receiver station receives from a communication channel, at a transmitter station. The influence of the polarization dispersion and the polarization dependent loss from the transmission channel is cancelled when the receiver station receives the optical signal.
摘要翻译：在光通信系统中，一个预补偿在偏振色散和偏振相关损耗，其中从发送站到接收站的光信号的反式mitted的从通信信道接收中，在发送站的影响传导对。偏振色散和来自传输信道的偏振相关损耗的影响被消除当接收机站接收到光信号。

3. 发明公开

EP1462848A2 Control apparatus and control method for optical modulator 审中-公开
标题翻译： Gerätund Methode zur Kontrolle eines optischen调制器
公开(公告)号：EP1462848A2
公开(公告)日：2004-09-29
申请号：EP04006226.7
申请日：2004-03-16
申请人： FUJITSU LIMITED
发明人： Akiyama, Yuichi , Ooi, Hiroki
IPC分类号： G02F1/225 , G02F1/03
CPC分类号： H04B10/50597 , G02F1/0121 , G02F1/0123 , G02F1/225 , G02F2201/16 , H04B10/5051 , H04B10/50575 , H04B10/50577 , H04B10/5162 , H04B10/58
摘要： An object of the invention is to provide a control system in which the phase shift between drive signals of an optical modulator can be reliably detected and compensated by a simple configuration. To this end, a control apparatus of the invention, for an optical modulator generating a signal light of a CS-RZ modulation system or the like by two LN modulators (10,20) connected in series, detects the phase shift between drive signals given to the former and latter stage LN modulators, or judges the phase shift between the drive signals based on intensity information of the electric spectrum of the signal light output from the optical modulator, to control the phases of the drive signals so as to minimize the phase shift. As a result, the phase shift between the drive signals can be reliably detected and compensated by an electric circuit with a simple configuration.
摘要翻译：本发明的目的是提供一种控制系统，其中可以通过简单的配置可靠地检测和补偿光调制器的驱动信号之间的相移。为此，本发明的控制装置，用于通过串联连接的两个LN调制器（10,20）产生CS-RZ调制系统等的信号光的光学调制器，检测给定的驱动信号之间的相移到前一级和后级LN调制器，或者基于从光调制器输出的信号光的电谱的强度信息来判断驱动信号之间的相移，以控制驱动信号的相位，以使相位最小化转移。结果，可以通过具有简单结构的电路可靠地检测和补偿驱动信号之间的相移。

4. 发明公开

EP0771091A2 Chirped-pulse multiple wavelength telecommunications system 失效
标题翻译： Nachrichtenübertragungssystemmit mehrerenWellenlängenund gechirpten Pulsen
公开(公告)号：EP0771091A2
公开(公告)日：1997-05-02
申请号：EP96307478.6
申请日：1996-10-15
申请人： AT&T Corp.
发明人： Knox, Wayne Harvey , Nuss, Martin C.
IPC分类号： H04J14/02 , H04B10/155 , H04J14/08
CPC分类号： H04J14/08 , H04B10/504 , H04B10/505 , H04B10/50577 , H04B10/50597 , H04B10/506 , H04B10/572 , H04J14/02
摘要： An apparatus and method provides optical multiple wavelength signals using a single optical broadband source to generate many independent optical wavelength channels. An optical transmitter includes a pulse chirping device which separates the frequency components of periodic optical pulses in the time domain forming separate wavelength channels which are separately modulated by a high-speed broadband optical modulator. A receiver includes a passive splitter to separate the individual wavelength channels. The chirped-pulse transmitter can then be conveniently adjusted to provide optimum overlap of wavelength channels with the modulating channel spectra.
摘要翻译：一种装置和方法使用单个光学宽带源提供光学多波长信号以产生许多独立的光学波长信道。一种光发射机包括一个脉冲线性调频装置，它将时域中的周期性光脉冲的频率分量分离，形成由高速宽带光调制器分别调制的分立波长信道。接收器包括用于分离各个波长通道的无源分离器。然后可以方便地调整啁啾脉冲发射器，以提供波长信道与调制信道光谱的最佳重叠。

5. 发明公开

EP3211809A1 OPTICAL DISPERSION COMPENSATION IN THE ELECTRICAL DOMAIN IN AN OPTICAL COMMUNICATIONS SYSTEM 有权
标题翻译：光通信系统中电光域色散补偿
公开(公告)号：EP3211809A1
公开(公告)日：2017-08-30
申请号：EP17162904.1
申请日：2003-07-11
申请人： Ciena Luxembourg S.a.r.l.
发明人： McNICOL, John , PARSONS, Kieran , STRAWCZYNSKI, Leo , ROBERTS, Kim B. , O'SULLIVAN, Maurice, S.
IPC分类号： H04B10/2513 , H04B10/079 , H04B10/50 , H04B10/508 , H04B10/61
CPC分类号： H04B10/07951 , H04B10/07953 , H04B10/25137 , H04B10/505 , H04B10/50597 , H04B10/508 , H04B10/6161
摘要： A compensation function mitigates a substantial portion of the chromatic dispersion imparted to a communications signal by an optical communications system. A digital input signal is digitally processed using the compensation function to generate a predistorted signal. An amplitude and a phase of an optical signal are modulated using a pair of orthogonal signal components to generate a predistorted optical signal for transmission. In one implementation, the pair of orthogonal signal components are components of the predistorted signal. In another implementation, the predistorted signal is processed using a non-linear compensator (50) to generate a further distorted signal and the pair of orthogonal signal components are components of the further distorted signal. In that implementation, the non-linear compensator is configured to substantially compensate for nonlinearities in one or both of an optical modulator of a transmitter of the system and an optical-to-electrical converter of a receiver of the system.
摘要翻译：补偿功能减轻了由光通信系统给予通信信号的大部分色散。使用补偿功能对数字输入信号进行数字处理以生成预失真信号。使用一对正交信号分量来调制光信号的幅度和相位以生成用于传输的预失真的光信号。在一个实现中，该对正交信号分量是预失真信号的分量。在另一实现中，使用非线性补偿器（50）处理预失真信号以生成进一步失真信号，并且该对正交信号分量是进一步失真信号的分量。在该实施方式中，非线性补偿器被配置为基本上补偿系统的发射器的光调制器和系统的接收器的光电转换器中的一个或两个中的非线性。

6. 发明公开

EP1764935A3 Optical transmission system 有权
公开(公告)号：EP1764935A3
公开(公告)日：2008-02-13
申请号：EP05027380.4
申请日：2005-12-14
申请人： Fujitsu Ltd.
发明人： Miura, Akira, Fujitsu Limited , Nakamura, Kentaro, Fujitsu Limited , Onaka, Hiroshi, Fujitsu Limited , Akiyama, Yuichi, Fujitsu Limited , Ooi, Hiroki, Fujitsu Limited , Rasmussen, Jens C., Fujitsu Limited , Hoshida, Takeshi, Fujitsu Limited
IPC分类号： H04B10/155
CPC分类号： G02F1/0123 , G02F1/2255 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/50575 , H04B10/50577 , H04B10/50597 , H04B10/58
摘要： A data modulator unit (10) generates a DQPSK optical signal in accordance with a data signal. A phase shift unit (19) provides a phase difference of π/2 between a pair of arms (11, 12) . A photodetector (31) converts an output signal of the data modulator unit (10) into an electrical signal. A filter (32) is a low-pass filter with a cut-off frequency lower than a symbol frequency, and filters an output signal of the photodetector (31). A monitor unit (33) detects power of an output signal of the filter (32). A phase difference control unit (34) adjusts the amount of phase shift in the phase shift unit (19) so as to minimize power of an output signal of the filter (32).

7. 发明公开

EP1597845A1 OPTICAL TRANSMITTER WITH SBS SUPPRESSION 有权
标题翻译：光发射机SBS抑制
公开(公告)号：EP1597845A1
公开(公告)日：2005-11-23
申请号：EP04707731.8
申请日：2004-02-03
申请人： Optium Corporation
发明人： FREDERIKSEN, Thomas R. , KRASULICK, Stephen B.
IPC分类号： H04B10/155 , H04B10/18
CPC分类号： H04B10/50597 , H01S2301/03 , H04B10/2537 , H04B10/505 , H04B10/50593
摘要： An optical transmitter and methods of generating an optical signal having SBS suppression are described. An optical transmitter having SBS suppression according to the present invention includes a signal generator that generates a SBS suppression signal. A laser generates a line width broadened optical signal having AM noise. A signal processor generates a modified SBS suppression signal from the SBS suppression signal. A modulator modulates the line width broadened optical signal having the AM noise with a payload modulation signal and with the modified SBS suppression signal to generate a payload modulated optical signal having SBS suppression and reduced AM noise.

8. 发明公开

EP0792033A2 Laser light generator 失效
标题翻译：激光发生器
公开(公告)号：EP0792033A2
公开(公告)日：1997-08-27
申请号：EP97102596.0
申请日：1997-02-18
申请人： KOKUSAI DENSHIN DENWA CO., LTD
发明人： Horiuchi, Yukio c/o Kokusai Denshin Denwa K.K. , Yamamoto, Shu c/o Kokusai Denshin Denwa K.K. , Akiba, Shigeyuki c/o Kokusai Denshin Denwa K.K.
IPC分类号： H04B10/155
CPC分类号： H04B10/50593 , H04B10/504 , H04B10/505 , H04B10/5051 , H04B10/50597 , H04B10/564
摘要： A laser light generator includes an adder 12 which adds an optical frequency modulation signal Sm onto a d.c. voltage for driving a laser diode 10 for continuous laser oscillation, and applies the sum signal to the laser diode 10 to drive it. An light output from the laser diode 10 is introduced to an optical intensity controller 14 that is controlled by a control signal prepared by adjusting the optical frequency modulation signal Sm both in phase and in amplitude by a phase adjusting circuit 16 and an amplitude adjusting circuit 18. The optical intensity controller 14 may be an electroabsorption modulator that changes its transmissivity in response to an output voltage of the circuit 18. Quantities of adjustment by the circuits 16 and 18 are determined so that fluctuation in transmissivity of the optical intensity controller 14 suppresses intensity fluctuation of the light output of the laser diode 10.

9. 发明公开

EP0690534A2 Data encoded optical pulse generator 失效
标题翻译：编码数据的光脉冲
公开(公告)号：EP0690534A2
公开(公告)日：1996-01-03
申请号：EP95304311.4
申请日：1995-06-20
申请人： AT&T Corp.
发明人： Froberg, Nan M. , Gnauck, Alan , Hansen, Per Bang , Harvey, George T. , Raybon, Gregory
IPC分类号： H01S3/103 , H01S3/025 , H04B10/145
CPC分类号： G02F1/0121 , G02F1/015 , H01S5/0265 , H01S5/06213 , H01S5/06256 , H04B10/505 , H04B10/50597 , H04B10/508
摘要： The apparatus and method according to the present invention includes a semiconductor laser-modulator which is used to simultaneously generate optical pulses and encode data. The optical data output from the laser-modulator are soliton pulses in RZ format suitable for transmission in long distance optical communications.

10. 发明授权

EP2149210B1 METHOD AND APPARATUS FOR LOW CHIRP TRANSMITTER FOR OPTICAL FIBER COMMUNICATIONS 有权
标题翻译：方法和设备低噪发射器，用于光纤通信
公开(公告)号：EP2149210B1
公开(公告)日：2017-04-19
申请号：EP08767453.7
申请日：2008-04-29
申请人： Innotrans Communications, Inc
发明人： RAMACHANDRAN, Mani , GYSEL, Herman , JASTI, Chandra
IPC分类号： H04B10/58 , H04B10/2575 , H04B10/2537
CPC分类号： H04B10/504 , H04B10/2537 , H04B10/25751 , H04B10/505 , H04B10/50597 , H04B10/506 , H04B10/58

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