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81. 发明授权

US09059806B2 Optical communication system, transmission apparatus and reception apparatus, and transmission method and reception method 有权
标题翻译：光通信系统，发送装置和接收装置，以及发送方法和接收方法
公开(公告)号：US09059806B2
公开(公告)日：2015-06-16
申请号：US13488659
申请日：2012-06-05
申请人： Qi Yang , Zhu Yang , Shaohua Yu
发明人： Qi Yang , Zhu Yang , Shaohua Yu
IPC分类号： H04B10/00 , H04B10/04 , H04B10/06 , H04B10/516 , H04B10/556 , H04L27/26
CPC分类号： H04B10/5161 , H04B10/5563 , H04L27/2614 , H04L27/2636 , H04L27/2697
摘要： An optical communication system, a transmission apparatus and a reception apparatus, and a transmission method and a reception method are provided. The transmission apparatus transmits an optical signal, and comprises: at least one encoder for encoding at least one data signal, respectively; at least one first modulator for performing first modulation on the at least one encoded data signal, respectively, and generating at least one first modulated signal; at least one second modulator for performing second modulation, which is DFT-spread-OFDM modulation, on the at least one first modulated signal, respectively, and generating at least one second modulated signal; and an up-converter for up-converting the at least one second modulated signal into the optical signal to be transmitted. Thus, a PAPR of the optical OFDM transmission signal is decreased, a signal distortion caused by non-linearity of optical devices is reduced, and a reception quality of the signal is improved.
摘要翻译：提供光通信系统，发送装置和接收装置，以及发送方法和接收方法。发送装置发送光信号，并且包括：分别对至少一个数据信号进行编码的至少一个编码器; 至少一个第一调制器，分别对所述至少一个编码数据信号执行第一调制，并产生至少一个第一调制信号; 至少一个第二调制器，用于在所述至少一个第一调制信号上分别进行DFT扩频OFDM调制的第二调制，并产生至少一个第二调制信号; 以及上变频器，用于将所述至少一个第二调制信号上变频为待传输的光信号。因此，光OFDM传输信号的PAPR减小，由于光器件的非线性引起的信号失真降低，信号的接收质量提高。

82. 发明申请

US20150098709A1 TECHNIQUES FOR EMITTING POSITION INFORMATION FROM LUMINAIRES 审中-公开
标题翻译：发射位置信息从LUMINAIRES的技术
公开(公告)号：US20150098709A1
公开(公告)日：2015-04-09
申请号：US14572258
申请日：2014-12-16
申请人： Christian Breuer , Anant Aggarwal , Bernhard Siessegger
发明人： Christian Breuer , Anant Aggarwal , Bernhard Siessegger
IPC分类号： H04B10/116 , H04B10/54
CPC分类号： H04B10/116 , G01C3/08 , G01C21/206 , G01S1/70 , G01S5/163 , G01S11/12 , G06K9/34 , G06K9/4661 , G06K9/6218 , G06T7/90 , G06T2207/10004 , G06T2207/20021 , H04B10/0795 , H04B10/114 , H04B10/1149 , H04B10/501 , H04B10/502 , H04B10/516 , H04B10/5563 , H04J3/10 , H04J14/086 , H04N5/3532
摘要： Techniques are disclosed for emitting position information from luminaires. Luminaire position information may be emitted via a light-based communication (LCom) signal that comprises data including the position information. The data may include relative and/or absolute position information for the luminaire and may indicate the physical location of the luminaire. Relative position information for the luminaire may include coordinates relative to a point of origin within the environment. Absolute position information for the luminaire may include global coordinates for the luminaire. In some cases, the absolute position information for a luminaire may be calculated using position information for the luminaire relative to a point of origin and the absolute position of the point of origin. The data may also include an environment identifier, which may indicate a map to use for the interpretation of position information for the luminaire. The techniques can be used for both stationary and mobile luminaires.
摘要翻译：公开了用于从灯具发射位置信息的技术。灯具位置信息可以经由包括位置信息的数据的基于光的通信（LCom）信号发出。数据可以包括照明器的相对和/或绝对位置信息，并且可以指示照明器的物理位置。照明器的相对位置信息可以包括相对于环境内的原点的坐标。灯具的绝对位置信息可能包括照明设备的全局坐标。在某些情况下，照明器的绝对位置信息可以使用照明器相对于原点的位置信息和原点的绝对位置来计算。数据还可以包括环境标识符，其可以指示用于解释照明器的位置信息的映射。这些技术可以用于固定和移动照明灯具。

83. 发明申请

US20150086193A1 FIBER-NONLINEARITY PRE-COMPENSATION PROCESSING FOR AN OPTICAL TRANSMITTER 审中-公开
标题翻译：光纤发射机的光纤非线性预补偿处理
公开(公告)号：US20150086193A1
公开(公告)日：2015-03-26
申请号：US14032313
申请日：2013-09-20
申请人： Alcatel-Lucent USA Inc.
发明人： Xiang Liu , Peter J. Winzer , Chandrasekhar Sethumadhavan
IPC分类号： H04B10/58 , H04B10/2507 , H04B10/079
CPC分类号： H04B10/5563 , H04B10/2543 , H04B10/255 , H04B10/2557 , H04B10/2563 , H04B10/50 , H04B10/532 , H04B2210/254
摘要： An optical transmitter configured to mitigate the adverse effects of fiber nonlinearity by altering the transmitted constellation symbols based on specific nonlinear characteristics of a fiber-optic link over which the optical transmitter is configured to transmit and on an a priori estimate of the nonlinear component of the optical-signal distortion in that fiber-optic link. In an example embodiment, each constellation symbol is altered by a respective perturbation amount determined using (i) a calculated or measured nonlinear transfer function corresponding to the fiber-optic link and (ii) a set of neighboring constellation symbols that are expected to contribute to the nonlinear distortion of the optical signal carrying the present constellation symbol due to the fiber nonlinearity. In various embodiments, different appropriate perturbation amounts can be selected to approximately pre-compensate nonlinear distortions caused by various nonlinear optical effects, such as four-wave mixing, etc.
摘要翻译：一种光发射机，被配置为通过基于光发射机被配置为传输的光纤链路的特定非线性特性改变所发送的星座符号来减轻光纤非线性的不利影响，并且基于对该发射器的非线性分量的先验估计光纤链路中的光信号失真。在一个示例实施例中，每个星座符号被改变为相应的扰动量，该扰动量使用（i）对应于光纤链路的计算或测量的非线性传递函数确定，以及（ii）一组相邻的星座符号，由于光纤非线性，携带当前星座符号的光信号的非线性失真。在各种实施例中，可以选择不同的适当扰动量来大致预补偿由诸如四波混频等各种非线性光学效应引起的非线性失真。

84. 发明申请

US20140219663A1 METHODS AND ARRANGEMENTS FOR FREQUENCY SHIFT COMMUNICATIONS 审中-公开
标题翻译：频率移动通信的方法和安排
公开(公告)号：US20140219663A1
公开(公告)日：2014-08-07
申请号：US13977695
申请日：2011-09-30
申请人： Richard D. Roberts
发明人： Richard D. Roberts
IPC分类号： H04B10/516 , H04L27/14 , H04B10/54 , H04B10/556 , H04B10/524
CPC分类号： H04B10/5161 , H04B10/524 , H04B10/541 , H04B10/5563 , H04L27/12 , H04L27/14 , H04L27/32
摘要： Embodiments relate to communicating data by varying a frequency of an amplitude modulated light source. Embodiments may comprise logic such as hardware and/or code to vary a frequency of an amplitude-modulated electromagnetic radiator such as a visible light source, an infrared light source, or an ultraviolet light source. For instance, a visible light source such as a light emitting diode (LED) may provide light for a room in a commercial or residential building. The LED may be amplitude modulated by imposing a duty cycle that turns the LED on and off. In some embodiments, the LED may be amplitude modulated to offer the ability to adjust the intensity of the light emitted from the LED. Embodiments may receive a data signal and adjust the frequency of the light emitted from the LED to communicate the data signal via the light. In many embodiments, the data signal may be communicated via the light source at frequencies that are not perceivable via a human eye.
摘要翻译：实施例涉及通过改变幅度调制光源的频率来传送数据。实施例可以包括用于改变调幅电磁辐射器（例如可见光源，红外光源或紫外光源）的频率的诸如硬件和/或代码的逻辑。例如，诸如发光二极管（LED）的可见光源可以为商业或住宅建筑物中的房间提供光。 LED可以通过施加使LED打开和关闭的占空比来调幅。在一些实施例中，LED可以被调幅以提供调整从LED发射的光的强度的能力。实施例可以接收数据信号并且调整从LED发射的光的频率以经由光来传送数据信号。在许多实施例中，数据信号可以经由人眼不能察觉的频率经由光源传送。

85. 发明授权

US08781336B1 Optical filter for use in a laser transmitter 有权
标题翻译：用于激光发射机的滤光片
公开(公告)号：US08781336B1
公开(公告)日：2014-07-15
申请号：US13370796
申请日：2012-02-10
申请人： Xueyan Zheng , Kevin J. McCallion , Daniel Mahgerefteh , Vincent Lixiang Bu , Yasuhiro Matsui
发明人： Xueyan Zheng , Kevin J. McCallion , Daniel Mahgerefteh , Vincent Lixiang Bu , Yasuhiro Matsui
IPC分类号： H04B10/04
CPC分类号： H04B10/5563 , H04B10/25137 , H04B10/541
摘要： In an embodiment, an optical communication system includes an optical transmitter and an optical discriminator. The optical transmitter is configured to emit a frequency modulated signal having a bit rate frequency and a frequency excursion between 20% and 80% of the bit rate frequency. The optical discriminator is configured to convert the frequency modulated signal to a substantially amplitude modulated signal and includes a delay line interferometer (DLI). The DLI includes an input, an output, a first optical path coupling optical signals from the input to the output and a second optical path coupling optical signals from the input to the output. The first and second optical paths have different lengths.
摘要翻译：在一个实施例中，光通信系统包括光发射机和光鉴别器。光发射器被配置为发射具有比特率频率和频率偏移在比特率频率的20％和80％之间的频率调制信号。光鉴相器被配置为将调频信号转换为基本幅度调制信号，并包括延迟线干涉仪（DLI）。 DLI包括输入，输出，耦合从输入到输出的光信号的第一光路和将光信号从输入耦合到输出的第二光路。第一和第二光路具有不同的长度。

86. 发明授权

US08687983B2 Laser communication system 有权
标题翻译：激光通讯系统
公开(公告)号：US08687983B2
公开(公告)日：2014-04-01
申请号：US13287555
申请日：2011-11-02
申请人： Alexandre M Bratkovski , Jacob Khurgin
发明人： Alexandre M Bratkovski , Jacob Khurgin
IPC分类号： H04B10/04
CPC分类号： H04B10/69 , H01S5/0427 , H01S5/18302 , H01S5/18358 , H04B10/5563 , H04B10/676
摘要： A laser communication system and method are disclosed. The laser communication system includes a laser receiver system to receive a frequency-shift keyed (FSK) optical signal encoded with a plurality of data signals. The laser receiver system including an FSK differential detection system that includes a plurality of differential detection filters that can each receive the FSK optical signal and generate an output. The FSK differential detection system can demodulate the FSK optical signal into a multi-bit digital code corresponding to a frequency of the FSK optical signal based on the output of each of the plurality of differential detection filters.
摘要翻译：公开了一种激光通信系统和方法。激光通信系统包括用于接收用多个数据信号编码的频移键控（FSK）光信号的激光接收机系统。该激光接收机系统包括一个FSK差分检测系统，该系统包括多个差分检测滤波器，每个差分检测滤波器可以接收FSK光信号并产生输出。 FSK差分检测系统可以基于多个差分检测滤波器的输出，将FSK光信号解调为与FSK光信号的频率对应的多位数字码。

87. 发明申请

US20130148983A1 MODULATOR FOR FREQUENCY-SHIFT KEYING OF OPTICAL SIGNALS 有权
标题翻译：光信号的频移键控调制器
公开(公告)号：US20130148983A1
公开(公告)日：2013-06-13
申请号：US13748777
申请日：2013-01-24
申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY
发明人： Bryan S. Robinson , Don M. Boroson , Scott A. Hamilton , Shelby J. Savage
IPC分类号： H04B10/04
CPC分类号： H04B10/5563 , H04B10/5051 , H04B10/548
摘要： Described are an FSK modulator and a method for large-alphabet FSK modulation. The FSK modulator and the method are based on filtering of a multi-tone optical source such as a mode-locked laser which provides a comb distribution of tones. A frequency-selective component selects for transmission a subset of the tones. In various embodiments the frequency-selective component is a Mach-Zehnder interferometer filter or a microring resonator filter. A second frequency-selective component selects a subset of the tones from the comb distribution provided by the first frequency-selective component. Still more frequency-selective components can be used according to the number of tones supplied by the multi-tone optical source to the FSK modulator. The optical signal exiting the last frequency-selective component includes only a single tone which corresponds to the symbol to be transmitted.
摘要翻译：描述了FSK调制器和用于大字母FSK调制的方法。 FSK调制器和方法基于滤波多色调光源，例如提供色调的梳状分布的锁模激光器。频率选择分量选择传输音调的子集。在各种实施例中，频率选择部件是马赫 - 曾德干涉仪滤波器或微环谐振器滤波器。第二频率选择分量从由第一频率选择分量提供的梳状分布中选择音调的子集。根据由多音调光源向FSK调制器提供的音调数量，可以使用更多的频率选择性组件。离开最后频率选择分量的光信号仅包括对应于待传输的符号的单个音调。

88. 发明申请

US20120057881A1 DISPERSION TOLERANT OPTICAL SYSTEM AND METHOD 有权
标题翻译：分散耐光系统和方法
公开(公告)号：US20120057881A1
公开(公告)日：2012-03-08
申请号：US13296530
申请日：2011-11-15
申请人： Marco Romagnoli , Paola Galli
发明人： Marco Romagnoli , Paola Galli
IPC分类号： H04B10/04
CPC分类号： H04B10/5563 , G02F2/00 , G02F2001/212 , G02F2202/20 , H04B10/25073 , H04B10/504
摘要： An optical communication system and method of use are described. The system comprisesan optical source adapted to receive a digitally encoded data signal comprising sequences of data at a data rate (B) and comprising two signal levels representing a first state and a second state of the data signal, the optical source being adapted to produce an optical signal substantially frequency modulated with frequency excursion Δν comprising a first instantaneous frequency (ν0) associated to the first state and a second instantaneous frequency (ν1) associated to the second state; an optical converter adapted to receive the substantially frequency modulated optical signal, the optical converter having an optical transfer function varying with frequency and including at least one pass band, the at least one pass band having a peak transmittance and at least a low-transmittance region.
摘要翻译：描述了光通信系统和使用方法。该系统包括光源，适于接收包含数据速率（B）的数据序列的数字编码数据信号，并且包括表示数据信号的第一状态和第二状态的两个信号电平，光源适于产生光信号基本上频率调制与频率偏移＆Dgr; 包括与第一状态相关联的第一瞬时频率（＆ngr; 0）和与第二状态相关联的第二瞬时频率（＆ngr; 1）光转换器，其适于接收基本上频率调制的光信号，所述光转换器具有随着频率变化并且包括至少一个通带的光传递函数，所述至少一个通带具有峰值透射率和至少低透射率区域。

89. 发明申请

US20110164844A1 OPTICAL MODULATOR 审中-公开
标题翻译：光学调制器
公开(公告)号：US20110164844A1
公开(公告)日：2011-07-07
申请号：US12998071
申请日：2009-09-16
申请人： Kaoru Higuma , Junichiro Ichikawa
发明人： Kaoru Higuma , Junichiro Ichikawa
IPC分类号： G02F1/035
CPC分类号： H04B10/5053 , G02B6/4202 , G02B6/4214 , G02F1/2255 , G02F2001/212 , H04B10/5051 , H04B10/5561 , H04B10/5563
摘要： It's an object of the invention to provide an optical modulator with high performance. The optical modulator 1 includes a substrate 4 having an electro-optical effect, an optical waveguide 5 formed on the substrate, and control electrodes 61 to 65 for controlling optical waves propagating in the optical waveguide, wherein the optical waveguide 5 includes a main Mach-Zehnder (MZ) type waveguide 50 having two branch waveguides and sub Mach-Zehnder (MZ) type waveguides 51 and 52 disposed in the branch waveguides, respectively, an optical intensity adjusting means (for example, including optical waveguides 53 and 54 and control electrodes 63 and 64) is disposed in each branch waveguide in series with the sub Mach-Zehnder type waveguides 51 and 52, and the optical modulator further comprises a voltage control circuit that monitors some of the optical waves propagating in the branch waveguides and adjusts a voltage applied to the optical intensity adjusting means.
摘要翻译：本发明的目的是提供一种具有高性能的光调制器。光调制器1包括具有电光效应的基板4，形成在基板上的光波导5和用于控制在光波导中传播的光波的控制电极61至65，其中光波导5包括主马赫 - 具有设置在分支波导中的两个分支波导和次马赫 - 曾德（MZ）型波导51和52的Zehnder（MZ）型波导50分别具有光强度调节装置（例如，包括光波导53和54以及控制电极 63和64）设置在与子马赫 - 曾德尔型子波导51和52串联的每个分支波导中，并且光调制器还包括电压控制电路，其监测在分支波导中传播的一些光波并调节电压应用于光强度调节装置。

90. 发明授权

US07957653B2 Phase control optical FSK modulator 有权
标题翻译：相控光学FSK调制器
公开(公告)号：US07957653B2
公开(公告)日：2011-06-07
申请号：US12067455
申请日：2006-09-19
申请人： Tetsuya Kawanishi , Masayuki Izutsu , Takahide Sakamoto , Masahiro Tsuchiya
发明人： Tetsuya Kawanishi , Masayuki Izutsu , Takahide Sakamoto , Masahiro Tsuchiya
IPC分类号： H04B10/04
CPC分类号： G02F1/225 , G02F1/0121 , G02F1/0316 , H04B10/505 , H04B10/5051 , H04B10/5053 , H04B10/5165 , H04B10/541 , H04B10/5563
摘要： There is provided an optical modulator capable of controlling the phase of a USB signal and the phase of an LSB signal of an optical FSK modulated signal. A modulation signal is applied to a main Mach-Zehnder electrode (or an electrode C) (11) of a main Mach-Zehnder waveguide (MZC) (8) to switch the USB signal and the LSB signal, and so FSK modulation can be made. In order to control the phase of the optical signal to be outputted from the main Mach-Zehnder waveguide (MZC) (8), bias voltage is applied to the main Mach-Zehnder electrode (11), and the phases of the USB signal and the LSB signal are controlled. By doing so, FSK modulation with adjusted phases can be performed.
摘要翻译：提供了一种能够控制USB信号的相位和光FSK调制信号的LSB信号的相位的光调制器。调制信号被施加到主马赫 - 曾德尔波导（MZC）（8）的主马赫 - 曾德尔电极（或电极C）（11）上以切换USB信号和LSB信号，因此FSK调制可以制作。为了控制从主马赫 - 曾德尔波导（MZC）（8）输出的光信号的相位，偏压被施加到主马赫 - 策德尔电极（11），并且USB信号和 LSB信号被控制。通过这样做，可以执行调整相位的FSK调制。

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