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1. 发明授权

US07092645B1 Electro optical microwave communications system 有权
标题翻译：电光微波通信系统
公开(公告)号：US07092645B1
公开(公告)日：2006-08-15
申请号：US10319105
申请日：2002-12-13
申请人： Robert H. Sternowski
发明人： Robert H. Sternowski
IPC分类号： H04B10/142 , H04B10/145 , H04B10/148
CPC分类号： H04B10/25759
摘要： A wideband communications system uses a photomixer, a radio frequency (RF) mixer, and an antenna. The photomixer is comprised of high speed phototransistors that are illuminated by two laser beams. The laser beams are generated by two lasers, one tunable, and conveyed to the photomixer via fiber optic cables. The two beams are mixed by the photomixer to generate a radio heterodyne signal that is mixed with antenna signals to generate an intermediate frequency (IF) signal based on the differences of the generated heterodyne frequency and the antenna signals. Conventional fiber optic means may be used to convey the IF signals, along with the fiber optic cables to the photomixer, to and from a remote RF head located at some distance from the rest of the communications system to overcome losses in transmission lines.
摘要翻译：宽带通信系统使用光混频器，射频（RF）混频器和天线。光敏混合器由两束激光束照射的高速光电晶体管组成。激光束由两个可调谐的激光器产生，并通过光纤电缆传送到光混合器。两个光束由光混合器混合，以产生与天线信号混合的无线电外差信号，以便根据产生的外差频率和天线信号的差异产生中频（IF）信号。传统的光纤装置可以用于将IF信号连同光纤电缆一起传送到光混合器，来自位于与通信系统的其余部分相距一定距离的远程RF头，以克服传输线路中的损耗。

2. 发明授权

US07020396B2 Opto-electronic ultra-wideband signal waveform generator and radiator 失效
公开(公告)号：US07020396B2
公开(公告)日：2006-03-28
申请号：US10256095
申请日：2002-09-25
申请人： Hossein Izadpanah , Jonathan Lynch , Mchran Mokhtari , Keyvan Sayyah
发明人： Hossein Izadpanah , Jonathan Lynch , Mchran Mokhtari , Keyvan Sayyah
IPC分类号： H04J14/02 , H04B10/142
CPC分类号： H04B10/25752 , H01Q3/2676 , H01Q5/40 , H01Q5/42 , H01Q13/065 , H04B1/71635 , H04B2210/006 , H04J14/02
摘要： A method and apparatus for generating an arbitrary UWB waveform are presented. An optical comb generator generates a serial stream of optical tones and an optical beating tone. A serial-to-parallel converter receives the serial tones and converts them into parallel optical tones. A spatial light modulator receives the parallel optical tones, and independently adjusts at least one of the phase and amplitude of each to generate the components of an arbitrary waveform. Next, each one of a plurality of optical-to-electrical converters receives a parallel optical tone and the selected optical beating tone, which are beat with the optical beating tone, producing electrical notes, representing differences between each parallel optical tones and the optical beating tone. Each antenna element is connected to receive an electrical note and to launch a signal based thereon, such that the launched signals are superimposed to the arbitrary waveform signal.

3. 发明授权

US06970250B1 Method and system for optical heterodyne detection of an optical signal that utilizes optical attenuation 失效
标题翻译：利用光衰减的光信号的光外差检测方法和系统
公开(公告)号：US06970250B1
公开(公告)日：2005-11-29
申请号：US09488149
申请日：2000-01-20
申请人： Wayne V. Sorin , Douglas M. Baney
发明人： Wayne V. Sorin , Douglas M. Baney
IPC分类号： G01J9/04 , H04B10/04 , H04B10/06 , H04B10/08 , H04B10/142 , H04B10/148 , H04B10/152 , H04B17/00 , G01B9/02
CPC分类号： H04B10/60 , H04B10/64
摘要： Monitoring an optical signal utilizing optical heterodyne detection involves attenuating an input signal before the input signal is combined with a local oscillator signal. The input signal is attenuated in order improve the signal to noise ratio of the heterodyne signal that is generated when the input signal and the local oscillator signal are combined. The signal to noise ratio of the heterodyne signal improves with attenuation of the input signal, specifically in the case where the intensity noise from the input signal is the dominant noise source, because the heterodyne signal and the intensity noise of the input signal scale differently with attenuation of the input signal.
摘要翻译：利用光外差检测来监测光信号涉及在将输入信号与本地振荡器信号组合之前衰减输入信号。输入信号衰减，以提高当输入信号和本地振荡器信号组合时产生的外差信号的信噪比。外差信号的信噪比随着输入信号的衰减而改善，特别是在输入信号的强度噪声是主要噪声源的情况下，因为外差信号和输入信号的强度噪声与输入信号衰减。

4. 发明申请

US20050232640A1 Method and apparatus for measuring frequency-resolved states of polarization of a working optical channel using polarization-scrambled heterodyning 有权
标题翻译：使用偏振加扰外差测量工作光通道的频率分辨状态的方法和装置
公开(公告)号：US20050232640A1
公开(公告)日：2005-10-20
申请号：US10825529
申请日：2004-04-15
申请人： Mikhail Boroditsky , Mikhail Brodsky , Nicholas Frigo , Peter Magill
发明人： Mikhail Boroditsky , Mikhail Brodsky , Nicholas Frigo , Peter Magill
IPC分类号： H04B10/04 , H04B10/02 , H04B10/06 , H04B10/08 , H04B10/142 , H04B10/148 , H04B10/152 , H04B10/18 , H04B10/00
CPC分类号： H04B10/07951 , H04B10/2569 , H04B10/6151 , H04B10/64
摘要： An apparatus for measuring a set of frequency-resolved states of polarization (SOP) of an optical signal includes a local oscillator (LO), a polarization scrambler, a coupler for mixing the polarization-scrambled signal with the optical signal to produce a heterodyned signal with a radio frequency (RF) component, and an analyzer for passing a fixed polarization component and resolving the polarization and frequency from the RF component. The apparatus is used for measuring, monitoring or compensating the polarization mode dispersion (PMD) in a working channel of an optical telecommunication system. A method for measuring frequency-resolved SOP of an optical signal includes tuning and polarization-scrambling a local oscillator (LO), mixing the scrambled LO with the optical signal, and resolving the RF signal in frequency and polarization. The method is applied to measure and monitor PMD in a working optical channel, and to dynamically compensate for the PMD.
摘要翻译：用于测量光信号的一组频率分辨的偏振态（SOP）的装置包括本地振荡器（LO），偏振加扰器，用于将偏振加扰信号与光信号混合以产生外差信号的耦合器具有射频（RF）分量，以及分析器，用于通过固定的偏振分量并且从RF分量分辨出偏振和频率。该装置用于测量，监测或补偿光通信系统的工作信道中的偏振模色散（PMD）。用于测量光信号的频率分辨的SOP的方法包括对本地振荡器（LO）进行调谐和偏振加扰，将加扰的LO与光信号混合，以及分频频率和极化中的RF信号。该方法用于测量和监测工作光通道中的PMD，并动态补偿PMD。

5. 发明申请

US20050185968A1 Method and apparatus for optical transmission 有权
标题翻译：光传输方法及装置
公开(公告)号：US20050185968A1
公开(公告)日：2005-08-25
申请号：US10815033
申请日：2004-03-31
申请人： Christophe Dorrer , Alan Gnauck , Inuk Kang , Chongjin Xie
发明人： Christophe Dorrer , Alan Gnauck , Inuk Kang , Chongjin Xie
IPC分类号： G02F1/03 , H04B10/02 , H04B10/04 , H04B10/06 , H04B10/135 , H04B10/142 , H04B10/152 , H04B10/155 , H04B10/18
CPC分类号： H04B10/5055 , H04B10/505 , H04B10/5051 , H04B10/532 , H04B10/5561
摘要： Methods and apparatus are provided for transmitting alternate-polarization phase-shift-keyed data. The output of a laser is modulated to optically encode electronic data using phase shift keying (PSK) to generate an optical signal. An alternate polarization PSK (APol-PSK) signal is generated by alternating the polarization of the optical signal using a modulator such that successive optical bits have substantially orthogonal polarizations.
摘要翻译：提供了用于发送交替偏振相移键控数据的方法和装置。调制激光器的输出以使用相移键控（PSK）对电子数据进行光学编码以产生光信号。通过使用调制器交替光信号的偏振来产生交替偏振PSK（APol-PSK）信号，使得连续的光学位具有基本正交的偏振。

6. 发明申请

US20050180762A1 Method of signal transmission in a WDM communication system 有权
标题翻译： WDM通信系统中的信号传输方法
公开(公告)号：US20050180762A1
公开(公告)日：2005-08-18
申请号：US10777942
申请日：2004-02-12
申请人： Marcus Duelk
发明人： Marcus Duelk
IPC分类号： H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152 , H04B10/155 , H04B10/18 , H04J14/00 , H04J14/02
CPC分类号： H04B10/508 , H04B10/25137 , H04B10/505
摘要： In a representative embodiment, a transmitter of a WDM communication system is equipped with a Mach-Zehnder modulator (MZM) configured to produce an optical signal corresponding to a duobinary data stream by modulating a beam of light passing through the MZM. A three-level electrical signal is applied to the MZM to modulate the light. At the second signal level, the modulator substantially blocks light transmission. At the first and third levels, the modulator transmits light corresponding to the duobinary “−1” and “+1” bits, respectively, such that a relative phase shift between the optical bits is different than 180 degrees, i.e., the phase shift value employed in prior-art optical duobinary modulation. Advantageously, by appropriately selecting voltages for the first and third levels, the relative phase shift between the optical bits can be adjusted to reduce detrimental effects of optical bandpass filtering typically present in the WDM communication system, thereby reducing the number of decoding errors at the receiver.
摘要翻译：在代表性实施例中，WDM通信系统的发射机配备有马赫 - 曾德尔调制器（MZM），其被配置为通过调制通过MZM的光束来产生对应于双二进制数据流的光信号。将三电平电信号施加到MZM以调制光。在第二信号电平时，调制器基本上阻挡光传输。在第一和第三级，调制器分别发送对应于二进制“-1”和“+1”位的光，使得光学位之间的相对相移不同于180度，即相移值用于现有技术的光学双二进制调制。有利地，通过适当地选择第一和第三电平的电压，可以调整光学位之间的相对相移以减少通常存在于WDM通信系统中的光学带通滤波器的有害影响，从而减少接收机处的解码错误的数量。

7. 发明授权

US06920262B2 Optical pulse stretcher for converting RZ optical data to NRZ optical data for a low jitter NRZ transmitter 失效
标题翻译：用于将RZ光学数据转换为NRZ光学数据的光学脉冲展宽器，用于低抖动NRZ发射器
公开(公告)号：US06920262B2
公开(公告)日：2005-07-19
申请号：US10325198
申请日：2002-12-18
申请人： Rory Lynn Van Tuyl
发明人： Rory Lynn Van Tuyl
IPC分类号： G02F1/03 , H04B10/00 , H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152 , H04B10/17 , G02B6/28 , G02F1/01 , H04B10/12
CPC分类号： H04B10/299 , H04B2210/517
摘要： The present invention pertains to method and apparatus for optically stretching an optical pulse to convert associated optical data from a first format to a second format. Moreover, the present invention pertains to method and apparatus for optically reducing the jitter of an optical data stream having optical pulses, enabling the transmission of low jitter optical data.
摘要翻译：本发明涉及用于光学拉伸光脉冲以将相关光学数据从第一格式转换成第二格式的方法和装置。此外，本发明涉及用于光学地减少具有光脉冲的光数据流的抖动的方法和装置，能够传输低抖动光学数据。

8. 发明申请

US20050100344A1 System for coherent optical communication 审中-公开
标题翻译：相干光通信系统
公开(公告)号：US20050100344A1
公开(公告)日：2005-05-12
申请号：US10701902
申请日：2003-11-06
申请人： Josh Hogan
发明人： Josh Hogan
IPC分类号： H04B10/142 , H04B10/04
CPC分类号： H04J14/02 , H04B10/63 , H04B10/64
摘要： The invention teaches a coherent optical system using a set of wavelengths at the transmitter and receiver ends. In both homodyne and heterodyne coherent detection, the invention provides for the transmission of an additional modulated reference wavelength. The invention provides for matching a set of wavelengths at the detection and transmission ends of the optical system.
摘要翻译：本发明教导了在发射机和接收机端使用一组波长的相干光学系统。在零差和外差相干检测中，本发明提供附加调制参考波长的传输。本发明提供了在光学系统的检测和发送端匹配一组波长。

9. 发明授权

US6088500A Expanded mode wave guide semiconductor modulation 失效
标题翻译：扩展模式波导半导体调制
公开(公告)号：US6088500A
公开(公告)日：2000-07-11
申请号：US826989
申请日：1997-04-11
申请人： Charles A. Zmudzinski , Doyle T. Nichols
发明人： Charles A. Zmudzinski , Doyle T. Nichols
IPC分类号： G02B6/122 , G02F1/015 , G02F1/017 , G02F1/025 , H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152 , G02B6/10 , G02F1/03
CPC分类号： B82Y20/00 , G02F1/01708 , G02F2001/0157
摘要： An electroabsorptive modulator (EAM) for providing RF modulation of optical inputs signals. The EAM is formed as a semiconductor waveguide on a semiconductor substrate with an optical input port and an optical output port and electrical contacts for connection to the RF input. The configuration of the waveguide portion of the EAM is optimized to provide a modal match with the particular optical device to which the EAM is to be connected, for example, an optical fiber. By optimizing the modal match between the EAM and the optical device to which the EAM is connected, the optical insertion losses are minimized thereby improving the overall performance of the optical system. The device is formed from a plurality of quantum wells selected to compensate for the increased mode field dimensions.
摘要翻译：一种用于提供光输入信号的RF调制的电吸收调制器（EAM）。 EAM形成为具有光输入端口和光输出端口的半导体衬底上的半导体波导和用于连接到RF输入的电触点。 EAM的波导部分的配置被优化以提供与要连接EAM的特定光学装置（例如光纤）的模式匹配。通过优化EAM与EAM连接的光学装置之间的模态匹配，光插入损耗最小化，从而提高光学系统的整体性能。该器件由多个选择用于补偿增加的模场尺寸的量子阱形成。

10. 发明授权

US6008922A Optical communication system using optical amplifiers with gain dependent on input signal polarization 失效
标题翻译：使用光放大器的光通信系统具有取决于输入信号极化的增益
公开(公告)号：US6008922A
公开(公告)日：1999-12-28
申请号：US859429
申请日：1997-05-20
申请人： Olivier Gautheron , Vincent Letellier
发明人： Olivier Gautheron , Vincent Letellier
IPC分类号： H01S3/10 , G02B6/126 , H01S3/06 , H01S3/101 , H04B10/04 , H04B10/06 , H04B10/142 , H04B10/152 , H04B10/16 , H04B10/17 , H04B10/18 , H04B10/00
CPC分类号： H04B10/532
摘要： In an optical communication system using polarization scrambling of the transmitted optical signal, the scrambling causes the polarization vector to rotate. The scrambler includes a modulator to modulate either the phase or the wavelength of the optical signal. A polarization dispersion device converts the phase modulation or wavelength modulation into polarization modulation. This polarization dispersion device consists of the optical communication fibers on the output side of the modulator.
摘要翻译：在使用所发送的光信号的偏振加扰的光通信系统中，扰频使偏振矢量旋转。扰频器包括调制器以调制光信号的相位或波长。偏振色散装置将相位调制或波长调制转换为偏振调制。该偏振色散装置由调制器输出侧的光通信光纤构成。

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