专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明申请

US20060127103A1 Method and apparatus for bias and alignment control in an optical signal transmitter 有权
标题翻译：光信号发射机中偏置和对准控制的方法和装置
公开(公告)号：US20060127103A1
公开(公告)日：2006-06-15
申请号：US11012369
申请日：2004-12-15
申请人： Matthew Mazurczyk , Sameh Sabet
发明人： Matthew Mazurczyk , Sameh Sabet
IPC分类号： H04B10/04
CPC分类号： H04B10/50577 , H04B10/505 , H04B10/5051 , H04B10/50575 , H04B10/541 , H04B10/5561
摘要： A method and apparatus for controlling bias and alignment in an optical signal transmitter for providing intensity modulation and DPSK modulation to an optical signal, e.g. in an RZ-DPSK modulation format. Output power in dither signals applied to the bias signals may be detected by a low speed photodetector. One or more of the bias signals may be adjusted in a low speed control loop in response to an error signal obtained by mixing the detected signal with the low frequency dither signals.
摘要翻译：一种用于控制光信号发射器中的偏置和对准的方法和装置，用于向光信号提供强度调制和DPSK调制。采用RZ-DPSK调制格式。施加到偏置信号的抖动信号中的输出功率可以由低速光检测器检测。响应于通过将检测到的信号与低频抖动信号混合而获得的误差信号，可以在低速控制环路中调整一个或多个偏置信号。

62. 发明申请

US20050013612A1 Multiple wavelength photonic oscillator 有权
标题翻译：多波长光子振荡器
公开(公告)号：US20050013612A1
公开(公告)日：2005-01-20
申请号：US10786721
申请日：2004-02-24
申请人： Daniel Yap
发明人： Daniel Yap
IPC分类号： G02F2/00 , H04B10/155 , H04J14/00 , H04J14/02
CPC分类号： H04B10/506 , G02F2/002 , H04B10/50572 , H04B10/50577 , H04J14/02 , H04J14/0298
摘要： A multi-wavelength photonic oscillator has a plurality of lasers each emitting light at a different frequency. An optical wavelength multiplexer combines the light emitted by the plurality of lasers at an output thereof as a set of optical wavelengths. An optical modulator is arranged in a feedback loop and coupled to receive light at the output of the optical wavelength multiplexer, the feedback loop further including an optical tap for coupling at least a subset of said set of optical wavelengths to at least one optical output of the multi-wavelength photonic modulator; at least one optical channel having an associated photodetector arranged to receive light from the optical tap via the at least one optical channel; and an electronic loop portion coupled to receive output from the at least one associated photodetector and to provide an input for the optical modulator.
摘要翻译：多波长光子振荡器具有多个激光器，每个激光器以不同的频率发光。光学波长多路复用器将其输出处的多个激光器发射的光合成为一组光波长。光学调制器布置在反馈回路中并被耦合以在光学波长多路复用器的输出端处接收光，反馈环路还包括用于将所述一组光波长的至少一个子集耦合到至少一个光学输出的光学抽头多波长光子调制器; 至少一个光通道，其具有相关联的光电检测器，布置成经由所述至少一个光通道接收来自所述光学抽头的光; 以及电子回路部分，其被耦合以接收来自所述至少一个相关联的光电检测器的输出并提供用于所述光学调制器的输入。

63. 发明申请

US20050002675A1 Method and apparatus for controlling modulator phase alignment in a transmitter of an optical communications system 有权
标题翻译：用于控制光通信系统的发射机中的调制器相位对准的方法和装置
公开(公告)号：US20050002675A1
公开(公告)日：2005-01-06
申请号：US10610870
申请日：2003-07-02
申请人： Harshad Sardesai , Steve Sluz
发明人： Harshad Sardesai , Steve Sluz
IPC分类号： H04B10/155 , H04B10/04
CPC分类号： H04B10/505 , H04B10/50577 , H04B10/508
摘要： A method and apparatus for controlling phase alignment in a modulator of a transmitter in an optical communications system utilizes an RF power signature to tune phase alignment. A portion of the optical signal is tapped and converted to an electrical signal. An electrical band-pass filter and RF detector examines a narrow slice of the RF spectrum and utilize the detected RF power to control phase alignment between the data modulator and pulse carver. Another portion of the optical signal is multiplied by the pulse carver clock, filtered and integrated in order to generate a second phase control signal for controlling the relative phase of a dual arm modulator being used as the pulse carver in one embodiment.
摘要翻译：用于控制光通信系统中的发射机的调制器中的相位对准的方法和装置利用RF功率特征来调整相位对准。光信号的一部分被抽头并转换成电信号。电子带通滤波器和RF检测器检查RF频谱的窄片，并利用检测到的RF功率来控制数据调制器和脉冲编码器之间的相位对准。将光信号的另一部分乘以脉冲雕刻时钟，进行滤波和积分，以便产生第二相位控制信号，用于控制在一个实施例中用作脉冲刻录机的双臂调制器的相对相位。

64. 发明申请

US20040028418A1 Electro-optical integrated transmitter chip for arbitrary quadrature modulation of optical signals 有权
标题翻译：光电集成发射芯片，用于光信号的任意正交调制
公开(公告)号：US20040028418A1
公开(公告)日：2004-02-12
申请号：US10613772
申请日：2003-07-02
发明人： Arkady Kaplan , Yaakov Achiam , Arthur Greenblatt , Isaac Shpantzer , Pak Shing Cho , Michael Tseytlin , Aviv Salamon
IPC分类号： H04B010/04
CPC分类号： H04L7/0075 , G02F1/225 , G02F2203/06 , H04B10/2543 , H04B10/505 , H04B10/5053 , H04B10/5057 , H04B10/50577 , H04B10/508 , H04B10/532 , H04B10/541 , H04B10/5561 , H04B10/60 , H04J14/005 , H04J14/02 , H04J14/08
摘要： An optical device includes, a first Mach-Zehnder modulator that produces a first output, and a second Mach-Zehnder modulator which produces a second output. A splitter couples the first and second Mach-Zehnder modulators. A combiner combines the first and second outputs. A phase shifter is coupled to the first and second Mach-Zehnder modulators. The first Mach-Zehnder modulator, second Mach-Zehnder modulator, splitter, combiner and the phase shifter are each formed as part of a single chip made of electro-optical material. Such two similar optical device integrated together with polarization combiner provide a two-polarization performance.
摘要翻译：光学装置包括产生第一输出的第一马赫 - 曾德调制器和产生第二输出的第二马赫 - 曾德调制器。分离器耦合第一和第二马赫 - 曾德调制器。组合器组合了第一和第二输出。移相器耦合到第一和第二马赫 - 曾德调制器。第一马赫 - 曾德尔调制器，第二马赫 - 曾德尔调制器，分离器，组合器和移相器分别形成为由电光材料制成的单个芯片的一部分。与偏振组合器集成在一起的这种两个类似的光学器件提供了两极化性能。

65. 发明申请

US20040008395A1 Cascaded RZ and NRZ laser modulators having RZ/NRZ phase alignment bias control 失效
标题翻译：具有RZ / NRZ相位偏置控制的级联RZ和NRZ激光调制器
公开(公告)号：US20040008395A1
公开(公告)日：2004-01-15
申请号：US10423825
申请日：2003-04-25
申请人： JDS Uniphase Corporation
发明人： Gregory J. McBrien , Joseph Farina , John D. Borla
IPC分类号： G02B026/00 , G02F001/01
CPC分类号： H04B10/505 , H04B10/50575 , H04B10/50577 , H04B10/5162
摘要： An optical transmitter architecture has a return-to-zero (RZ) laser modulator coupled in cascade with a non-return-to-zero (NRZ) laser modulator. Modulator bias and electronic phase delay bias are controlled using dither-based feedback, so as to align the phase of the RZ clock signal with that of the NRZ data. A first method uses an RZ quadrature AM dither or an RZ nullhillclimbernull bias dither, to apply a relatively low frequency dither signal to a variable RF delay for the RZ clock signal applied to the RZ modulator or NRZ data signal applied to the NRZ modulator. A second method is an RZ quadrature AM dither or nullhillclimbernull bias dither scheme that applies equal amplitude and opposite phase dither signals to perform complementary modulation of both the RZ and NRZ MZ modulators simultaneously.
摘要翻译：光发射机架构具有与非归零（NRZ）激光调制器级联耦合的归零（RZ）激光调制器。使用基于抖动的反馈来控制调制器偏置和电子相位延迟偏置，以便将RZ时钟信号的相位与NRZ数据的相位对准。第一种方法使用RZ正交AM抖动或RZ“山坡式”偏置抖动，将施加到施加到NRZ调制器的RZ调制器或NRZ数据信号的RZ时钟信号的相对低频抖动信号施加到可变RF延迟。第二种方法是RZ正交AM抖动或“山坡式”偏置抖动方案，其施加相等幅度和相反相位抖动信号，以同时执行RZ和NRZ MZ调制器的互补调制。

66. 发明授权

US06671079B2 Method and apparatus for transmitting a modulated optical signal 有权
标题翻译：用于发送调制光信号的方法和装置
公开(公告)号：US06671079B2
公开(公告)日：2003-12-30
申请号：US10016904
申请日：2001-12-14
申请人： Richard Clair Fuller , Yuan-Hua Kao , Frank J. Peragine
发明人： Richard Clair Fuller , Yuan-Hua Kao , Frank J. Peragine
IPC分类号： G02F103
CPC分类号： H04B10/50577 , G02F1/0123 , H04B10/5051 , H04B10/50572 , H04B10/50575 , H04B10/508
摘要： A method and apparatus for transmitting a modulated optical signal includes a continuous source of light, a first optical modulator for generating an optical pulse stream in response to a radio frequency (RF) driving signal and a DC bias signal, and a second modulator for modulating the optical pulse stream with an electrical data signal. A processor dithers the phase of the RF driving signal using a first dither signal and the level of the DC bias signal using a second dither signal. The processor detects the first and/or second dither signals in the modulated optical signal and adjusts the phase of the RF driving signal and/or level of the DC bias signal to null the detected first and/or second dither signal.
摘要翻译：用于发送调制光信号的方法和装置包括连续光源，响应于射频（RF）驱动信号和DC偏置信号产生光脉冲流的第一光调制器和用于调制具有电数据信号的光脉冲流。处理器使用第一抖动信号和使用第二抖动信号的DC偏置信号的电平来抖动RF驱动信号的相位。处理器检测调制光信号中的第一和/或第二抖动信号，并且调整RF驱动信号的相位和/或DC偏置信号的电平，使检测到的第一和/或第二抖动信号为零。

67. 发明授权

US06643046B2 Apparatus and method for optical modulation 有权
标题翻译：用于光调制的装置和方法
公开(公告)号：US06643046B2
公开(公告)日：2003-11-04
申请号：US10232675
申请日：2002-09-03
申请人： Hiroyuki Ibe , Masahide Miyachi
发明人： Hiroyuki Ibe , Masahide Miyachi
IPC分类号： G02B2600
CPC分类号： H04B10/5057 , H04B10/505 , H04B10/5051 , H04B10/50572 , H04B10/50577 , H04B10/506 , H04B10/5162 , H04B10/5165 , H04B10/541 , H04B10/548
摘要： An optical modulator includes a phase modulator configured to drive light with an NRZI-coded drive signal for phase modulation and an intensity modulator to modulate the intensity of a phase-modulated NRZI-coded optical signal received from the phase modulator. The operating point of the intensity modulator is set such that the output of the intensity-modulated optical signal is eliminated when the NRZI-coded optical signal is not varied.
摘要翻译：光调制器包括相位调制器，其被配置为用用于相位调制的NRZI编码的驱动信号驱动光，以及强度调制器，用于调制从相位调制器接收的经相位调制的NRZI编码的光信号的强度。强度调制器的工作点被设定为当NRZI编码的光信号不变时，强度调制的光信号的输出被消除。

68. 发明申请

US20020005975A1 Optical transmitter and optical transmission system 有权
标题翻译：光发射机和光传输系统
公开(公告)号：US20020005975A1
公开(公告)日：2002-01-17
申请号：US09789510
申请日：2001-02-22
发明人： Hiroshi Nakamoto
IPC分类号： G02F001/00 , G02B026/00 , G02F001/03 , G02F001/07
CPC分类号： G02F1/0121 , G02F1/225 , G02F2001/212 , G02F2201/16 , G02F2203/25 , H04B10/505 , H04B10/5051 , H04B10/50577 , H04B10/541
摘要： The present invention aims at providing an optical transmitter utilizing a Mach-Zehnder type optical modulator, in which the optical modulator is capable of readily optimizing an optical wavelength chirp to be added to a transmission optical signal. To this end, the optical transmitter of the present invention includes a Mach-Zehnder type optical modulator having two arms driven by two drive signals, respectively, and is constituted to comprise: amplitude adjusting parts for adjusting the amplitudes of the drive signals, respectively; phase adjusting parts for adjusting the phases of the drive signals, respectively; an amplitude controlling part for feedback controlling the amplitude adjusting parts so that an amplitude ratio between the drive signals becomes a value corresponding to an optimum optical wavelength chirp amount; and a phase controlling part for feedback controlling the phase adjusting parts so that the phases of the drive signals are brought into an antiphase relation.
摘要翻译：本发明旨在提供一种利用马赫 - 曾德尔型光调制器的光发射机，其中光调制器能够容易地优化要添加到传输光信号的光波长啁啾。为此，本发明的光发射机分别包括由两个驱动信号驱动的两个臂的马赫 - 曾德尔型光调制器，它们分别包括：用于调节驱动信号振幅的振幅调节部分; 相位调整部件，用于分别调节驱动信号的相位; 幅度控制部分，用于反馈控制振幅调节部分，使得驱动信号之间的振幅比变为对应于最佳光波长啁啾量的值; 以及相位控制部，用于反馈控制相位调整部，使得驱动信号的相位成为反相关系。

69. 发明申请

US20010024315A1 Opto-electronic frequency divider circuit and method of operating same 失效
公开(公告)号：US20010024315A1
公开(公告)日：2001-09-27
申请号：US09766683
申请日：2001-01-17
申请人： AGILENT TECHNOLOGIES, INC.
发明人： Francesco Cisternino , Andrea De Marchi , Raffaele Girardi , Stefania Roemisch
IPC分类号： G02F001/35
CPC分类号： H04L7/0075 , H04B10/505 , H04B10/5053 , H04B10/50577 , H04J14/08
摘要： The circuit includes an electro-optical mixer, such as an electro-optical Mach-Zehnder modulator, with non-linear behavior. The modulator receives as input an optical signal (Pin) at the frequency to be divided, in addition to an electric signal (e3) at a given frequency, usually corresponding to the frequency deriving from such division. The output optical signal (Pout) from modulator exhibits a modulation spectrum containing the frequency difference between the frequency to be divided and at least one harmonic of the frequency of the above electric signal. After having been converted into an electric signal (e1), the output signal of the mixer is subjected to a filtering action to extract the above frequency difference component. This latter one is then used both as electrical signal (e3) for the mixing, and as output signal from the divider (e2). The preferred application is to OTDM systems, to extract a synchronism signal as tributary signal frequency.

70. 发明申请

US20180007645A1 OUTPHASING POWER MANAGEMENT CIRCUIT FOR RADIO FREQUENCY (RF) BEAMFORMING 审中-公开
公开(公告)号：US20180007645A1
公开(公告)日：2018-01-04
申请号：US15479956
申请日：2017-04-05
申请人： Qorvo US, Inc.
发明人： Nadim Khlat , Alexander Wayne Hietala
IPC分类号： H04W52/42 , H04L27/02 , H04B7/06
CPC分类号： H04W52/42 , H03F1/0283 , H03F1/0294 , H03F3/195 , H03F3/245 , H03F3/68 , H03F2200/451 , H04B1/0458 , H04B7/0617 , H04B10/50577 , H04B10/50597 , H04B17/11 , H04L27/02
摘要： An outphasing power management circuit for radio frequency (RF) beamforming is disclosed. The outphasing power management circuit includes a first outphasing amplifier branch consisting of a plurality of first power amplifiers and a second outphasing amplifier branch consisting of a plurality of second power amplifiers. A controller operates the first outphasing amplifier branch and the second outphasing amplifier branch as a pair of outphasing power amplifiers. The first outphasing amplifier branch generates a plurality of first output signals, and the second outphasing amplifier branch generates a plurality of second output signals. The first output signals and the second output signals are transmitted in an RF beam without being combined. As such, it is possible to support RF beamforming with a reduced number of power amplifiers and/or direct current (DC) to DC converters, thus helping to improve efficiency and reduce cost.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式