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81. 发明授权

US3962657A Broadband data modulation system 失效
标题翻译：宽带数据调制系统
公开(公告)号：US3962657A
公开(公告)日：1976-06-08
申请号：US516942
申请日：1974-10-22
申请人： Charles M. Redman , Ronald W. Moore
发明人： Charles M. Redman , Ronald W. Moore
IPC分类号： G01S7/40 , G02F1/11 , H04B10/155 , H01S3/00 , G02F1/28 , H04B9/00
CPC分类号： G02F1/113 , G01S7/4052 , H04B10/505 , H04B10/5053 , G01S2007/4095
摘要： A broadband data modulation system for the transmission of amplitude and frequency modulation data with a bandwidth up to and greater than 500 MHz. The system involves the multiple heterodyning of microwave signals with infrared or optical signals. The data modulation system utilizes multiple passes of the infrared or optical signal through a crystalline material which also has an acoustic signal forming an acousto-optic grating. Fixed gratings are also imbedded in the crystal so as to aid in the guidance of the infrared or optical signal. The output of the crystal comprises an infrared or optical signal modulated with the desired data, which can be transmitted optically to a transponder, which can in turn convert the last-named infrared or optical signal into a transmitted correspondingly modulated RF signal.
摘要翻译：宽带数据调制系统，用于传输带宽高达500 MHz以上的幅度和频率调制数据。该系统涉及具有红外或光信号的微波信号的多次外差。数据调制系统通过结晶材料利用红外或光信号的多次通过，该结晶材料也具有形成声光栅的声信号。固定光栅也嵌入晶体中，有助于红外或光信号的引导。晶体的输出包括用期望数据调制的红外或光信号，其可以光学地传输到应答器，转发器又可以将最后命名的红外或光信号转换成传输的相应调制的RF信号。

82. 发明授权

US3856378A Method and means for modulating light propagating in an optical waveguide by bulk acoustic waves 失效
标题翻译：用于通过大容量声波调制光波导中的光传播的方法和手段
公开(公告)号：US3856378A
公开(公告)日：1974-12-24
申请号：US33686473
申请日：1973-02-28
申请人： WESTINGHOUSE ELECTRIC CORP
发明人： BRANDT G , GOTTLIEB M
IPC分类号： G02B6/30 , G02B6/12 , G02F1/11 , G02F1/125 , G02F1/335 , H04B10/155 , G02B5/14 , G02F1/24
CPC分类号： H04B10/50 , G02F1/125 , G02F1/335
摘要： A method and means for modulating light propagating in an optical waveguide by passing ultrasonic acoustic waves, either longitudinal or shear bulk waves, through said optical waveguide. Also disclosed is a method and means for coupling light between at least two optical waveguides separated by a thin film having a lower index of refraction than said guides by passage of bulk acoustic waves through both of the guides.
摘要翻译：一种用于通过使超声波（纵向或者剪切体波）通过所述光波导来调制在光波导中传播的光的方法和装置。还公开了一种用于在至少两个光波导之间耦合光的方法和装置，所述至少两个光波导由通过两个引导件的体声波通过比所述引导件具有较低折射率的薄膜分开。

83. 发明授权

US3699445A Frequency shift keyed communication system 失效
标题翻译：频移键盘通信系统
公开(公告)号：US3699445A
公开(公告)日：1972-10-17
申请号：US3699445D
申请日：1970-11-02
申请人： BELL TELEPHONE LABOR INC
发明人： KINSEL TRACY STEWART
IPC分类号： H04B10/155 , H04L27/10 , H04B9/00
CPC分类号： H04L27/10 , H04B10/505 , H04B10/524 , H04B10/5563
摘要： The frequency shift keying (FSK) format used in the prior art, radio frequency carrier, PCM communication systems generally comprises a train of pulsed carriers having sufficiently different frequencies so as to permit frequency separation and identification by means of either filters or frequency discriminators. At optical frequencies, however, the relatively small amount of frequency shift readily obtainable by the use of available optical devices operating on the output of a laser may not allow complete frequency separation by an amount sufficient to employ either of these conventional detection systems. In the system described herein, the received pulse train is divided into two pulse trains, one of which is delayed the equivalent of one pulse repetition period relative to the other. The two pulse trains are then coupled to a frequency mixer whose output is indicative to the frequency shift between pulses in adjacent time slots. Means are provided at either the transmitter or the receiver for converting between the standard binary-encoded signal and a differential binary encoded signal.
摘要翻译：在现有技术的射频载波，PCM通信系统中使用的频移键控（FSK）格式通常包括具有足够不同频率的脉冲载波串，以允许通过滤波器或频率鉴别器进行频率分离和识别。然而，在光频率下，通过使用在激光器的输出上工作的可用的光学器件容易获得的相对较小的频率偏移量可能不允许完全频率分离足以使用这些常规检测系统中的任何一个的量。在本文描述的系统中，所接收的脉冲序列被分成两个脉冲序列，其中一个脉冲串相对于另一个延迟相当于一个脉冲重复周期。然后将两个脉冲串耦合到混频器，其输出指示相邻时隙中的脉冲之间的频移。在发送器或接收器处提供用于在标准二进制编码信号和差分二进制编码信号之间进行转换的装置。

84. 发明授权

US3600594A Fiber optics pulse width modulator 失效
标题翻译：光纤光栅脉宽调制器
公开(公告)号：US3600594A
公开(公告)日：1971-08-17
申请号：US3600594D
申请日：1968-12-09
申请人： LOCKHEED AIRCRAFT CORP
发明人： MOORE JOHN F
IPC分类号： G02F2/00 , H04B10/155 , H01J5/16
CPC分类号： H04B10/508 , G02F2/00 , H04B10/504
摘要： An optical pulse width modulator having a spiral stack of optical fibers providing a plurality of independent channels of different length for the passage of light. A suitable light source is intensity modulated in accordance with an applied electronic signal waveform and the light directed through the stack of optical fibers. The light emerging from the fibers is correlated with a waveform pattern in an optical grating and detected photoelectrically as a width modulated signal representing the correlation function between the applied electronic signal and the optical grating.

85. 发明授权

US3577017A Rectangular pulse modulator 失效
标题翻译：矩形脉冲调制器
公开(公告)号：US3577017A
公开(公告)日：1971-05-04
申请号：US3577017D
申请日：1968-12-17
申请人： US ARMY
发明人： DUKE JIMMY R , MILLER WALTER E JR
IPC分类号： H03K3/57 , H04B10/155 , H03K3/35
CPC分类号： H03K3/57 , H04B10/504 , H04B10/508
摘要： Discharge of a RLC network is controlled with a siliconcontrolled rectifier to provide a rectangular pulse for pulsing GaAs lasers.

86. 发明授权

US3401357A Electromagnetic wave amplifier oscillator and modulator 失效
标题翻译：电磁波放大器振荡器和调制器
公开(公告)号：US3401357A
公开(公告)日：1968-09-10
申请号：US47891265
申请日：1965-08-11
申请人： BELL TELEPHONE LABOR INC
发明人： D ASARO LUCIAN A
IPC分类号： G02F1/015 , H03B17/00 , H03C1/34 , H04B10/155
CPC分类号： G02F1/015 , H03B17/00 , H03C1/34 , H04B10/505 , H04B10/50572 , H04B10/50577

87. 发明授权

US2557974A Light modulation system 失效
标题翻译：光调制系统
公开(公告)号：US2557974A
公开(公告)日：1951-06-26
申请号：US61064145
申请日：1945-08-13
申请人： FARNSWORTH RES CORP
发明人： KIBLER PAUL J
IPC分类号： G02F1/11 , H04B10/155
CPC分类号： G02F1/11 , H04B10/505 , H04B10/5051

88. 发明申请

US20090123161A1 LED SYSTEM FOR ILLUMINATION AND DATA TRANSMISSION 审中-公开
标题翻译：用于照明和数据传输的LED系统
公开(公告)号：US20090123161A1
公开(公告)日：2009-05-14
申请号：US12355810
申请日：2009-01-19
申请人： Xiaohong SUN , DEMETRI J. GIANNOPOULOS
发明人： Xiaohong SUN , DEMETRI J. GIANNOPOULOS
IPC分类号： H04B10/155
CPC分类号： H05B33/0818
摘要： A LED system (100) for illumination and data transmission employs a LED driver (110), an electronic switch (130), and an illumination unit (150). In a first illumination state, illumination unit (150) receives LED current(s) from LED driver (110) to emit a first light output. In a second illumination state, the illumination unit (150) receives additional LED current(s) from LED driver 110 via the electronic switch as controlled by the LED driver where the illumination unit (150) additionally emits a second light output. LED system (100) optically communicates a data bit with each transition of the illumination unit (150) from the first illumination state to the second illumination state, and vice-versa.
摘要翻译：用于照明和数据传输的LED系统（100）采用LED驱动器（110），电子开关（130）和照明单元（150）。在第一照明状态下，照明单元（150）从LED驱动器（110）接收LED电流以发射第一光输出。在第二照明状态下，照明单元（150）经由LED驱动器控制的电子开关从LED驱动器110接收额外的LED电流，其中照明单元（150）另外发射第二光输出。 LED系统（100）将数据位与照明单元（150）的每个转换从第一照明状态光传送到第二照明状态，反之亦然。

89. 发明申请

US20070274731A1 Method and Apparatus for Optical Phase Modulation 有权
标题翻译：光相位调制方法与装置
公开(公告)号：US20070274731A1
公开(公告)日：2007-11-29
申请号：US10592032
申请日：2004-03-10
申请人： Pierpaolo Boffi , Lucia Marazzi , Mario Martinelli , Livio Paradiso , Paola Parolari
发明人： Pierpaolo Boffi , Lucia Marazzi , Mario Martinelli , Livio Paradiso , Paola Parolari
IPC分类号： H04B10/155
CPC分类号： H04B10/505 , H04B10/5055 , H04B10/5561
摘要： A method of phase modulating optical radiation by the steps of phase modulating the optical radiation by using a modulator having an extinction ratio in order to provide a multilevel phase shift key signal, and applying to each optical pulse a phase-shift having an absolute value depending on the extinction ratio and a sign depending, for each of the optical pulses, on the respective optical phase value. An apparatus implementing the method is also disclosed.
摘要翻译：通过使用具有消光比的调制器对光辐射进行相位调制以便提供多电平相移键信号的步骤来相位调制光辐射的方法，并且向每个光脉冲施加具有绝对值的绝对值的相移对于每个光脉冲，消光比和相应的光学相位值的符号。还公开了一种实现该方法的装置。

90. 再颁专利

USRE39785E1 System for optically transmitting frequency-division-multiplexed signal and transmitter therefor 有权
标题翻译：用于光学发送频分复用信号和发射机的系统
公开(公告)号：USRE39785E1
公开(公告)日：2007-08-21
申请号：US10997559
申请日：2004-11-26
申请人： Masaru Fuse
发明人： Masaru Fuse
IPC分类号： H04B10/18 , H04B10/155 , H04B10/152 , H04J14/02
CPC分类号： H04B10/25137 , H04B10/505 , H04B10/5165 , H04J14/0298
摘要： In an optical transmission system, a multiplexer frequency-division-multiplexes a plurality of signals, and outputs the resultant signal to an FM modulator. The FM modulator converts the frequency-division-multiplexed signal into an FM modulated signal through frequency modulation using the frequency-division-multiplexed signal as an original signal. A frequency-divider converts the FM modulated signal into a frequency-divided FM modulated signal whose frequency is ½n (n is an integer of not less than 1) the frequency of the FM modulated signal. An optical modulator has a predetermined input-voltage vs. output-optical-power characteristic, and is biased at the minimum point (voltage) about the output optical power. The optical modulator modulates an unmodulated light fed from a light source with the applied frequency-divided FM modulated signal to produce an optical signal whose optical carrier component is suppressed, and sends the optical signal to an optical transmission line. An optical receiver receives the optical signal, and square-law detects the signal to convert into an FM modulated signal. A FM demodulator demodulates the FM modulated signal to reproduce the original frequency-division-multiplexed signal. This configuration makes it possible to narrow the bandwidth of an FM modulated signal while increasing the frequency deviation thereof, and realize high-quality signal transmission as a result.
摘要翻译：在光传输系统中，复用器对多个信号进行分频复用，并将所得到的信号输出到FM调制器。 FM调制调制调制调制解调器通过使用频分复用信号作为原始信号的频率调制将频分复用信号转换成FM调制信号。分频器将FM调制信号转换成FM调制信号的频率为频率为1/2的分频FM调制信号（n为不小于1的整数）。光调制器具有预定的输入电压vs.输出光功率特性，并且以关于输出光功率的最小点（电压）偏置。光调制器利用施加的分频FM调制信号调制从光源馈送的未调制光，以产生其光载波分量被抑制的光信号，并将光信号发送到光传输线。光接收机接收光信号，平方律检测信号转换成FM调制信号。 FM解调器解调FM调制信号，以再现原始的分频复用信号。通过该结构，能够在增大FM调制信号的频率偏差的同时缩小带宽，从而实现高质量的信号传输。

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