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111. 发明申请

US20180183526A1 CALIBRATION OF PLUGGABLE OPTICAL MODULE 审中-公开
公开(公告)号：US20180183526A1
公开(公告)日：2018-06-28
申请号：US15735715
申请日：2016-06-10
申请人： Oclaro Technology Limited
发明人： Robert Griffin
IPC分类号： H04B10/50 , H04B10/588 , H04B10/564 , H04B10/079 , G02F1/21
CPC分类号： H04B10/50572 , G02F1/21 , G02F1/225 , G02F2001/212 , H04B10/07955 , H04B10/5057 , H04B10/50575 , H04B10/564 , H04B10/588 , H04B2210/254
摘要： An optical communications apparatus comprising a host (100) and an optical module (200) comprising a Mach-Zehnder modulator (202), MZM, wherein the optical module is removably connected to the host via a connection path, the optical communications apparatus comprising: a signal generator (101) at the host, configured to generate a plurality of calibration signals at a plurality of frequencies; a host interface (102) configured to transmit the calibration signals to the optical module via the connection path; a module interface (201) configured to receive the transmitted calibration signals; wherein the MZM is configured to use the calibration signals to modulate a laser light source (206) and biased to a point at which average output power is proportional to the output modulated signal; an optical detector configured to measure an average magnitude of an output of the MZM when each of the calibration signals is used to modulate the laser light source; one of a host calibration unit (103) and a module calibration unit (203), configured to determine a magnitude response of the connection path based on the measured average magnitudes and magnitudes of the respective calibration signals, and further configured to determine a pre-emphasis characteristic based on the magnitude response, the pre-emphasis characteristic for application to signals transmitted by the optical transmitter in use.

112. 发明申请

US20180145760A1 METHODS AND SYSTEMS FOR REDUCING NOISE IN OPTOELECTRONIC OSCILLATORS 审中-公开
公开(公告)号：US20180145760A1
公开(公告)日：2018-05-24
申请号：US15857141
申请日：2017-12-28
申请人： RAYTHEON COMPANY
发明人： Andrew Kowalevicz
IPC分类号： H04B10/50 , H04B10/2575 , H04B1/00 , H04B10/00
CPC分类号： H04B10/50572 , H04B10/00 , H04B10/2575 , H04B2210/006
摘要： Optoelectronic oscillator systems and an optoelectronic oscillator noise reduction method. One example of an optoelectronic oscillator system includes an optical source positioned at a first end of a fiber-optic path, the optical source being configured to transmit an optical signal along the fiber-optic path, an optical modulator positioned to receive and modulate the optical signal based on at least a reference signal, a retro-reflector positioned at a second end of the fiber-optic path, the retro-reflector being configured to receive and retro-reflect the optical signal, the retro-reflected optical signal having at least a frequency range of inherent fiber noise canceled, and an optical circulator positioned along the fiber-optic path between the optical modulator and the retro-reflector, the optical circulator being configured to direct the optical signal to the retro-reflector and direct the retro-reflected optical signal along a feedback path to a first photodetector to generate the reference signal.

113. 发明申请

US20180031945A1 OPTICAL MODULATOR AND OPTICAL MODULE 审中-公开
公开(公告)号：US20180031945A1
公开(公告)日：2018-02-01
申请号：US15650222
申请日：2017-07-14
申请人： Fujitsu Optical Components Limited
发明人： Yasuhiro OHMORI , Yoshinobu KUBOTA , Masaharu DOI , Masaki SUGIYAMA
IPC分类号： G02F1/225 , G02F1/00 , G02F1/01 , H04B10/50
CPC分类号： G02F1/2255 , G02F1/0027 , G02F1/0123 , G02F1/2257 , G02F2201/07 , G02F2203/21 , H04B10/50572
摘要： An optical modulator includes an optical modulator chip configured to optically modulate an optical signal using an electrical signal input thereto; and a relay substrate configured to relay and couple the electrical signal to the optical modulator chip. The optical modulator chip includes a signal electrode and a ground electrode for the electrical signal, formed along a waveguide for the optical signal. One end of the optical modulator chip is arranged to face the relay substrate. An electrode connection portion coupling the electrical signal to the relay substrate by wire is provided at the one end. A distance between a tip of one end of the signal electrode in the electrode connection portion and the end of the optical modulator chip is less than a distance between a tip of an end of the ground electrode in the electrode connection portion and the end of the optical modulator chip.

114. 发明申请

US20170070297A1 Optical Modulators and Data Processing Systems Using the Same 有权
标题翻译：光调制器和使用它的数据处理系统
公开(公告)号：US20170070297A1
公开(公告)日：2017-03-09
申请号：US15230384
申请日：2016-08-06
申请人： Samsung Electronics Co., Ltd.
发明人： Yong-sang Park , Hyun-il BYUN
IPC分类号： H04B10/516
CPC分类号： H04B10/516 , G02F1/0121 , G02F1/225 , G02F1/2257 , G02F2001/217 , G02F2201/58 , G02F2203/20 , H04B10/505 , H04B10/50572
摘要： An optical modulator includes an optical splitter splitting input optical signals into a first optical signal and a second optical signal and transmitting the first optical signal and the second optical signal to a first optical waveguide and a second optical waveguide, respectively, an optical combiner generating an output optical signal by combining the first and second optical signals transmitted from the first and second optical waveguides respectively, and including three output ports including a main output port, a first auxiliary output port, and a second auxiliary output port, three output optical waveguides connected to the three output ports, respectively, and transmitting the output optical signal, and an optical detector connected to at least one of the three output optical waveguides.
摘要翻译：光调制器包括光分路器，将输入光信号分成第一光信号和第二光信号，并将第一光信号和第二光信号分别传输到第一光波导和第二光波导，通过组合从第一和第二光波导发送的第一和第二光信号，并且包括三个输出端口，包括主输出端口，第一辅助输出端口和第二辅助输出端口输出光信号，三个输出光波导连接分别传送到三个输出端口，并传输输出光信号;以及光检测器，连接到三个输出光波导中的至少一个。

115. 发明授权

US09485028B2 Modulator for optical transmitter 有权
标题翻译：光发射机调制器
公开(公告)号：US09485028B2
公开(公告)日：2016-11-01
申请号：US14119744
申请日：2011-06-01
申请人： Roberto Magri , Alberto Deho
发明人： Roberto Magri , Alberto Deho
IPC分类号： H04B10/00 , H04B10/516 , H04B10/54 , H04B10/58 , H04B10/50
CPC分类号： H04B10/516 , H04B10/50572 , H04B10/541 , H04B10/58
摘要： An optical transmitter has a modulator for modulating data onto an optical signal for transmission to the receiver, the modulated signal having components at one or more constellations of points of different amplitudes and phases. The modulator is tunable such that distortions of the points of the one or more constellation can be tuned, and a tuning controller is provided for receiving a feedback signal from the receiver indicating a distortion measured at the receiver, and for tuning automatically the modulator to adjust the modulation based on the received feedback signal to pre-compensate for the measured distortion. Such pre-compensation can reduce the amount of distortion in the transmission system and thus enable more transmission capacity, without the need for a complex transmitter.
摘要翻译：光发射机具有用于将数据调制到光信号上用于传输到接收机的调制器，该调制信号具有不同振幅和相位的一个或多个星座的分量。调制器是可调谐的，使得可以调谐一个或多个星座的点的失真，并且提供调谐控制器用于从接收器接收指示在接收机处测量的失真的反馈信号，并且用于自动调谐调制器调整基于接收到的反馈信号进行调制以对所测量的失真进行预补偿。这种预补偿可以减少传输系统中的失真量，从而能够实现更多的传输容量，而不需要复杂的发射机。

116. 发明授权

US09479263B2 EML bias control system 有权
标题翻译： EML偏差控制系统
公开(公告)号：US09479263B2
公开(公告)日：2016-10-25
申请号：US14243984
申请日：2014-04-03
申请人： ARRIS Enterprises, Inc.
发明人： Marcel Schemmann , Shamsuddin Chasmawala
IPC分类号： H04B10/00 , H04B10/58 , H04B10/516 , G02F1/01 , H04B10/50 , H04N7/22 , G02F1/03
CPC分类号： H04B10/58 , G02F1/0123 , G02F1/0327 , H04B10/25758 , H04B10/50572 , H04B10/50575 , H04B10/516 , H04N7/22
摘要： Systems and methods of minimizing distortion produced when modulating an optical signal using an electrical signal.
摘要翻译：使用电信号调制光信号时最小化失真的系统和方法。

117. 发明授权

US09438350B1 Method and apparatus for distortion correction in optical communication links 有权
标题翻译：光通信链路中失真校正的方法和装置
公开(公告)号：US09438350B1
公开(公告)日：2016-09-06
申请号：US13956084
申请日：2013-07-31
申请人： Juniper Networks, Inc.
发明人： Theodore J. Schmidt , Bo Zhang , Murat Arabaci , Roberto Marcoccia , Christian Malouin , Steven William Keck
IPC分类号： H04B10/50
CPC分类号： H04B10/2507 , H04B10/5055 , H04B10/5057 , H04B10/50572 , H04B10/588
摘要： In some embodiments, an apparatus includes an optical transmitter module that can be electrically coupled to an electrical serializer/deserializer and a controller. The optical transmitter module can include an electrical detector that can receive an in-band signal. The electrical detector can send to the controller a first power error signal and a second power error signal based on the in-band signal. The controller can send a correction control signal to the electrical serializer/deserializer based on the first power error signal and the second power error signal such that the electrical serializer/deserializer sends a pre-emphasized signal to the optical transmitter module based on the correction control signal. In such embodiments, the first power error signal, the second power signal and the correction control signal are out-of-band signals.
摘要翻译：在一些实施例中，装置包括可以电耦合到电串行器/解串器和控制器的光发射器模块。光发射机模块可以包括可以接收带内信号的电检测器。电检测器可以基于带内信号向控制器发送第一功率误差信号和第二功率误差信号。控制器可以基于第一功率误差信号和第二功率误差信号向电串行器/解串器发送校正控制信号，使得电串行器/解串器基于校正控制向光发射器模块发送预加重信号信号。在这样的实施例中，第一功率误差信号，第二功率信号和校正控制信号是带外信号。

118. 发明授权

US09432123B2 Adaptive mach zehnder modulator linearization 有权
标题翻译：自适应马氏调制器线性化
公开(公告)号：US09432123B2
公开(公告)日：2016-08-30
申请号：US14179447
申请日：2014-02-12
申请人： INPHI CORPORATION
发明人： Hari Shankar
IPC分类号： H04B10/588 , H04B10/50
CPC分类号： H04B10/516 , H04B10/2575 , H04B10/50572 , H04B10/50593 , H04B10/588
摘要： The present invention is directed to optical communication systems and methods thereof. In various embodiments, the present invention provides method for linearizing Mach Zehnder modulators by digital pre-compensation and adjusting the gain of the driver and/or the modulation index. The pre-compensation can be implemented as a digital pre-compensation algorithm, which is a part of an adaptive feedback loop. There are other embodiments as well.
摘要翻译：本发明涉及光通信系统及其方法。在各种实施例中，本发明提供了通过数字预补偿线性化马赫曾德调制器并调整驱动器的增益和/或调制指数的方法。预补偿可以实现为数字预补偿算法，其是自适应反馈回路的一部分。还有其它实施例。

119. 发明申请

US20160112138A1 Apparatus and Method For Monitoring Signal Quality of a Modulated Optical Signal 有权
标题翻译：用于监测调制光信号信号质量的装置和方法
公开(公告)号：US20160112138A1
公开(公告)日：2016-04-21
申请号：US14518262
申请日：2014-10-20
申请人： ADVA Optical Networking SE
发明人： Mohammad Alfiad , Sorin Tibuleac
IPC分类号： H04B10/50 , H04B10/079
CPC分类号： H04B10/50572 , H04B10/50575 , H04B10/50593 , H04B10/50595 , H04B10/588 , H04B10/615
摘要： A transmitter with at least one optical modulator adapted to modulate the optical signal output by a laser source to generate a modulated optical signal, wherein the optical signal output by the laser source is tapped and supplied to a monitoring circuit comprising an optical front end configured to select signal components of the tapped modulated optical signal and to convert the selected signal components of the tapped modulated optical signal into analog signals, and comprising at least one analog-to-digital converter, ADC, adapted to perform equivalent-time sampling of the analog signals to provide digital signals processed by a processing unit to monitor signal quality of the modulated optical signal.
摘要翻译：一种具有至少一个光调制器的发射器，其适于调制由激光源输出的光信号以产生经调制的光信号，其中由激光源输出的光信号被抽头并提供给监视电路，该监视电路包括被配置为选择抽头调制的光信号的信号分量，并将抽头调制的光信号的所选信号分量转换成模拟信号，并且包括至少一个模/数转换器ADC，适于执行模拟的等效时采样信号以提供由处理单元处理的数字信号，以监测调制光信号的信号质量。

120. 发明申请

US20160099776A1 OPTICAL TRANSMITTER AND WAVEFORM DISTORTION CORRECTION METHOD 有权
标题翻译：光学发射器和波形失真校正方法
公开(公告)号：US20160099776A1
公开(公告)日：2016-04-07
申请号：US14854392
申请日：2015-09-15
申请人： Fujitsu Limited
发明人： Hisao NAKASHIMA , Takahito Tanimura , Yuichi Akiyama
IPC分类号： H04B10/2507 , H04B10/54
CPC分类号： H04B10/2507 , H04B10/50572 , H04B10/50575 , H04B10/541 , H04B10/588 , H04B2210/072
摘要： An optical transmitter includes: a mapper configured to generate an electric-field-information signal from transmission data; a training-signal-generation section configured to generate a training signal; a training-signal-insertion section configured to insert the training signal into the electric-field-information signal; a driver configured to generate a drive signal from the electric-field-information signal into which the training signal is inserted; a modulator configured to generate an optical-modulation signal based on the drive signal; an optical receiver configured to generate an intensity signal indicating intensity of the optical-modulation signal; a training-signal-extraction section configured to extract an intensity-training signal corresponding to the training signal, from the intensity signal; a coder configured to generate a coded-training signal by coding the intensity-training signal extracted by the training-signal-extraction section using the training signal generated by the training-signal-generation section; and a distortion detection section configured to detect waveform distortion of the optical-modulation signal, based on the coded-training signal.
摘要翻译：光发射机包括：映射器，被配置为从传输数据生成电场信息信号; 训练信号生成部，被配置为生成训练信号; 训练信号插入部，被配置为将训练信号插入到电场信息信号中; 驱动器，被配置为从所述训练信号插入到所述电场信息信号中产生驱动信号; 调制器，被配置为基于所述驱动信号产生光调制信号; 光接收器，被配置为产生指示所述光调制信号的强度的强度信号; 训练信号提取部，被配置为从强度信号中提取与训练信号对应的强度训练信号; 编码器，被配置为通过使用由训练信号生成部生成的训练信号对由训练信号提取部提取的强度训练信号进行编码来生成编码训练信号; 以及失真检测部，被配置为基于编码训练信号来检测所述光调制信号的波形失真。

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