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1. 发明授权

US11784719B1 Systems and methods for tuning a power characteristic of an optical frequency comb 有权
公开(公告)号：US11784719B1
公开(公告)日：2023-10-10
申请号：US17220616
申请日：2021-04-01
申请人： CABLE TELEVISION LABORATORIES, INC.
发明人： Lin Cheng , Luis Alberto Campos , Haipeng Zhang , Junwen Zhang , Mu Xu , Zhensheng Jia
IPC分类号： H04B10/50 , H04B10/564 , H04B10/556 , H04B10/27 , H04B10/079 , H04J14/02
CPC分类号： H04B10/5563 , H04B10/07955 , H04B10/27 , H04B10/501 , H04B10/506 , H04B10/564 , H04J14/0221
摘要： A method for tuning a power characteristic of an optical frequency comb includes controlling a modulating light source according to a plurality of modulation parameters to generate an optical frequency comb including a plurality of optical tones. Additionally, at least one of the plurality of modulation parameters is changed until a total power of the plurality of optical tones is greater than or equal to a minimum threshold value. Furthermore, at least one of the plurality of modulation parameters are changed until respective powers of each of the plurality of optical tones are within a predetermined proximity to respective target powers of each of the plurality of optical tones.

2. 发明授权

US09804422B2 Semiconductor optical modulation device 有权
公开(公告)号：US09804422B2
公开(公告)日：2017-10-31
申请号：US14584457
申请日：2014-12-29
申请人： Mitsubishi Electric Corporation
发明人： Norio Okada , Tatsuki Otani
IPC分类号： H04B10/00 , H04B10/12 , H03H7/38 , G02F1/03 , G02F1/07 , G02F1/01 , G02F1/015 , H04B10/50 , H04B1/40 , H04B10/516 , H03H5/12 , H04B10/58 , H04B10/25 , H04L25/02 , H04B10/548 , H04L25/10 , H04B1/04 , H03H7/40 , H04B10/40 , H04B15/00 , H04B10/572 , H04B10/556 , H04B10/67 , H04B10/2507 , H04B10/61 , H03H11/28 , H04L25/03
CPC分类号： G02F1/0121 , G02F1/01 , G02F1/015 , G02F2202/10 , H03H5/12 , H03H7/38 , H03H7/40 , H03H11/28 , H04B1/0475 , H04B1/40 , H04B10/2504 , H04B10/2507 , H04B10/40 , H04B10/503 , H04B10/516 , H04B10/5161 , H04B10/548 , H04B10/556 , H04B10/5563 , H04B10/572 , H04B10/58 , H04B10/6164 , H04B10/671 , H04B15/00 , H04L25/0278 , H04L25/028 , H04L25/03343 , H04L25/10
摘要： A first resistor connected in parallel to a semiconductor optical modulator having first ends, the first resistor and first ends connected to a reference potential. A first end of a first transmission line is connected to second ends of the semiconductor optical modulator and the first resistor. A second transmission line is connected in series to the first transmission line and has an impedance lower than that of the first resistor. A first end of the second transmission line is connected to a second end of the first transmission line. A third transmission line is connected in series to the first and second transmission lines and has an end connected to a second end of the second transmission line, and has an impedance equal to that of the first transmission line. A second resistor and a capacitor are connected in series between the third transmission line and the reference potential.

3. 发明申请

US20170201326A1 SPECTRAL ANALYSIS USING A SPATIAL LIGHT MODULATOR 有权
公开(公告)号：US20170201326A1
公开(公告)日：2017-07-13
申请号：US14994762
申请日：2016-01-13
申请人： VIAVI SOLUTIONS INC.
发明人： Josh Philipson , Chris Wagner
IPC分类号： H04B10/556 , H04B10/079 , H04B10/532 , H04B10/572 , H04B10/54 , H04J14/02 , H04Q11/00
CPC分类号： H04B10/5563 , H04B10/0793 , H04B10/07955 , H04B10/532 , H04B10/541 , H04B10/572 , H04J14/0212 , H04Q11/0066 , H04Q2011/0016 , H04Q2011/0083
摘要： According to an example, an optical transmission device may include a spatial light modulator having a plurality of cells, in which different wavelengths of a light beam are to impinge upon different groups of pixels along a dispersion direction. The device may also include a driver mechanism to modulate, at a first frequency, a first group of the plurality of cells upon which light having a first wavelength impinges to impress a first frequency fluctuation onto a property of an output light including the first wavelength and to modulate, at a second frequency, a second group of the plurality of cells upon which light having a second wavelength impinges to impress a second frequency fluctuation onto a property of an output light including the second wavelength, in which the second frequency modulation differs from the first frequency modulation.

4. 发明授权

US09461752B2 Methods and arrangements for generating a waveform for frequency shift keying communications 有权
标题翻译：用于生成用于频移键控通信的波形的方法和装置
公开(公告)号：US09461752B2
公开(公告)日：2016-10-04
申请号：US13539351
申请日：2012-06-30
申请人： Richard D. Roberts , Praveen Gopalakrishnan , Mathys C. Walma
发明人： Richard D. Roberts , Praveen Gopalakrishnan , Mathys C. Walma
IPC分类号： H04L27/10 , H04B10/556 , H04B10/116
CPC分类号： H04B10/5563 , H04B10/116 , H04B10/502 , H04L27/04 , H04L27/12
摘要： Embodiments may provide a way of communicating via an electromagnetic radiator, or light source, that can be amplitude modulated such as light emitting diode (LED) lighting and receivers or detectors that can determine data from light received from the amplitude modulated electromagnetic radiator. Some embodiments may provide a waveform in the form of chips at a chipping clock frequency that switch a light source between on and off states to communicate via light sources that can be amplitude modulated such as LED lighting. Some embodiments may provide a method of transmitting the waveform via modulated LED lighting. Some embodiments are intended for indoor navigation via photogrammetry (i.e., image processing) using self-identifying LED light anchors. In many embodiments, the data signal may be communicated via the light source at amplitude modulating frequencies such that the resulting flicker is not perceivable to the human eye.
摘要翻译：实施例可以提供通过可以被调幅的电磁辐射器或光源（例如发光二极管（LED）照明）和可以从从调幅电磁辐射器接收的光确定数据的接收器或检测器进行通信的方式。一些实施例可以以切片时钟频率提供以切片时钟频率的芯片形式的波形，该光纤切换状态之间的光源通过可被调幅的光源（例如LED照明）进行通信。一些实施例可以提供通过经调制的LED照明来发送波形的方法。一些实施例旨在通过使用自识别LED光锚的摄影测量（即，图像处理）进行室内导航。在许多实施例中，可以以幅度调制频率通过光源传送数据信号，使得所得到的闪烁对人眼不能察觉。

5. 发明申请

US20160204577A1 LASER, PASSIVE OPTICAL NETWORK SYSTEM, APPARATUS AND WAVELENGTH CONTROL METHOD 有权
标题翻译：激光，被动光网络系统，装置和波长控制方法
公开(公告)号：US20160204577A1
公开(公告)日：2016-07-14
申请号：US14308335
申请日：2014-06-18
申请人： Huawei Technologies Co., Ltd.
发明人： Xiaoping ZHOU
IPC分类号： H01S5/0625 , H04B10/572 , H04B10/50 , H01S5/12
CPC分类号： H01S5/06251 , H01S5/06256 , H01S5/12 , H01S5/22 , H01S5/32333 , H04B10/503 , H04B10/5563 , H04B10/572
摘要： The present invention provide a laser, where the laser is divided into a laser region and a grating adjustment region through a first electrical isolation layer; the laser region is configured to generate optical signals, where the optical signals include an optical signal with a wavelength corresponding to a “0” signal and an optical signal with a wavelength corresponding to a “1” signal; the grating adjustment region is configured to adjust a wavelength of the grating adjustment region by controlling current of the grating adjustment region, so that the optical signal with the wavelength corresponding to the “1” signal of the laser region passes through the grating adjustment region, and the optical signal with the wavelength corresponding to the “0” signal of the laser region returns to the laser region, thereby implementing suppression to chirp of a directly modulated laser.
摘要翻译：本发明提供一种激光器，其中通过第一电隔离层将激光器分成激光区域和光栅调节区域; 激光区域被配置为产生光信号，其中光信号包括具有对应于“0”信号的波长的光信号和具有对应于“1”信号的波长的光信号; 光栅调整区域通过控制光栅调整区域的电流来调整光栅调整区域的波长，使得与激光区域的“1”信号对应的波长的光信号通过光栅调整区域，并且具有对应于激光区域的“0”信号的波长的光信号返回到激光区域，从而实现对直接调制激光器的啁啾的抑制。

6. 发明申请

US20150280819A1 LIGHT-BASED COMMUNICATION TRANSMISSION PROTOCOL 有权
标题翻译：基于光的通信传输协议
公开(公告)号：US20150280819A1
公开(公告)日：2015-10-01
申请号：US14572179
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 , H04J3/10 , H04J14/08
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 providing light-based communication (LCom) between a receiver device and one or more transmitting LCom-enabled luminaires. In accordance with some embodiments, LCom data to be transmitted may be allocated over multiple colors of light output by multiple LCom-enabled luminaires and transmitted in parallel across the multiple colors of light using a time division multiple access (TDMA) scheme. In some cases, the disclosed techniques can be used, for example, to allow for multiple LCom-enabled luminaires to communicate simultaneously over multiple active LCom channels with a single receiver device. In some instances, the disclosed techniques may be used, for example, to provide channel redundancy that facilitates successful completion of LCom data transmission when an LCom channel is broken. In some instances, the disclosed techniques may be used, for example, to provide more accurate positioning for indoor navigation.
摘要翻译：公开了用于在接收机设备和一个或多个发射LCom启用的灯具之间提供基于光的通信（LCom）的技术。根据一些实施例，要发送的LCom数据可以由多个启用LCom的灯具输出的多种颜色的颜色分配，并且使用时分多址（TDMA）方案在多个颜色的光上并行传输。在一些情况下，所公开的技术可以用于例如允许多个LCom启用的灯具通过多个有源LCom信道与单个接收机设备同时通信。在一些情况下，所公开的技术可以用于例如提供当LCom信道被破坏时便于成功完成LCom数据传输的信道冗余。在一些情况下，所公开的技术可以用于例如为室内导航提供更准确的定位。

7. 发明申请

US20150276399A1 TECHNIQUES FOR DETERMINING A LIGHT-BASED COMMUNICATION RECEIVER POSITION 有权
标题翻译：用于确定基于光的通信接收器位置的技术
公开(公告)号：US20150276399A1
公开(公告)日：2015-10-01
申请号：US14572081
申请日：2014-12-16
申请人： Christian Breuer , Anant Aggarwal , Barry Stout
发明人： Christian Breuer , Anant Aggarwal , Barry Stout
IPC分类号： G01C3/32 , G01C3/08
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 determining a light-based communication (LCom) receiver position. The techniques can be used to determine the position of a receiver relative to a specific luminaire within the field of view (FOV) of the receiver camera. The relative position may be calculated by determining the distance and the orientation of the receiver relative to the luminaire. The distance relative to the luminaire may be calculated using the observed size of the luminaire in an image generated by the receiver camera, the image zoom factor, and actual geometry of the luminaire. The orientation relative to the luminaire may be determined using a fiducial associated with the luminaire that can be used as an orientation cue. Once the position of a receiver relative to a luminaire is determined, the absolute position of the receiver may be calculated using the absolute position of the luminaire.
摘要翻译：公开了用于确定基于光的通信（LCom）接收机位置的技术。这些技术可用于确定接收机相对于接收机相机视场（FOV）内的特定照明器的位置。可以通过确定接收器相对于照明器的距离和方位来计算相对位置。相对于照明器的距离可以使用由接收机相机产生的图像中的观察到的照明尺寸，照片缩放系数和照明器的实际几何来计算。可以使用与可用作定向提示的照明器相关联的基准来确定相对于照明器的取向。一旦确定了接收器相对于照明器的位置，则可以使用照明器的绝对位置来计算接收器的绝对位置。

8. 发明申请

US20150104185A1 TECHNIQUES FOR RASTER LINE ALIGNMENT IN LIGHT-BASED COMMUNICATION 有权
标题翻译：基于光通信的雷达线对准技术
公开(公告)号：US20150104185A1
公开(公告)日：2015-04-16
申请号：US14572130
申请日：2014-12-16
申请人： Christian Breuer , Anant Aggarwal , Barry Stout
发明人： Christian Breuer , Anant Aggarwal , Barry Stout
IPC分类号： H04B10/116
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 providing proper raster line alignment of a camera or other light-sensing device of a receiver device relative to a transmitting light-based communication (LCom)-enabled luminaire to establish reliable LCom there between. In accordance with some embodiments, proper alignment can be provided automatically (e.g., by the receiver device and/or other suitable controller). In accordance with some embodiments, proper alignment can be provided by the user. In some instances in which a user is to be involved in the alignment process, the receiver device may be configured, for example, to instruct or otherwise guide the user in the process of properly aligning the receiver device relative to a given transmitting LCom-enabled luminaire.
摘要翻译：公开了一种技术，用于相对于基于传输光通信（LCom）的照明设备提供接收机设备的照相机或其他光感测设备的适当光栅线对准，以在其间建立可靠的LCom。根据一些实施例，可以自动提供适当的对准（例如，由接收机设备和/或其他合适的控制器）。根据一些实施例，用户可以提供适当的对准。在用户参与对准过程的某些情况下，接收机设备可以被配置为例如在正确对准接收机设备相对于给定的发送LCom功能的过程中指示或指导用户灯具。

9. 发明授权

US08897654B1 System and method for generating a frequency modulated linear laser waveform 有权
标题翻译：用于产生调频线性激光波形的系统和方法
公开(公告)号：US08897654B1
公开(公告)日：2014-11-25
申请号：US13527638
申请日：2012-06-20
申请人： Diego F. Pierrottet , Larry B. Petway , Farzin Amzajerdian , Bruce W. Barnes , George E. Lockard , Glenn D. Hines
发明人： Diego F. Pierrottet , Larry B. Petway , Farzin Amzajerdian , Bruce W. Barnes , George E. Lockard , Glenn D. Hines
IPC分类号： H04B10/00
CPC分类号： H04B10/5563 , G01S7/4911 , G01S17/32 , H04B10/2575 , H04B10/548
摘要： A system for generating a frequency modulated linear laser waveform includes a single frequency laser generator to produce a laser output signal. An electro-optical modulator modulates the frequency of the laser output signal to define a linear triangular waveform. An optical circulator passes the linear triangular waveform to a band-pass optical filter to filter out harmonic frequencies created in the waveform during modulation of the laser output signal, to define a pure filtered modulated waveform having a very narrow bandwidth. The optical circulator receives the pure filtered modulated laser waveform and transmits the modulated laser waveform to a target.
摘要翻译：用于产生调频线性激光波形的系统包括产生激光输出信号的单频激光发生器。电光调制器调制激光输出信号的频率以定义线性三角波形。光环行器将线性三角波形传递到带通光学滤波器，以滤除在激光输出信号调制期间在波形中产生的谐波频率，以定义具有非常窄带宽的纯滤波调制波形。光循环器接收纯过滤的调制激光波形，并将调制的激光波形传输到目标。

10. 发明申请

US20140308048A1 METHODS AND ARRANGEMENTS FOR FREQUENCY SHIFT COMMUNICATIONS BY UNDERSAMPLING 有权
标题翻译：频谱移动通信的方法和安排
公开(公告)号：US20140308048A1
公开(公告)日：2014-10-16
申请号：US13977696
申请日：2011-11-14
申请人： Richard D. Roberts , Mathijs C. Walma , Praveen Gopalakrishnan
发明人： Richard D. Roberts , Mathijs C. Walma , Praveen Gopalakrishnan
IPC分类号： H04B10/556 , H04B10/524 , H04B10/50
CPC分类号： H04B10/116 , H04B10/502 , H04B10/524 , H04B10/5563 , H04B10/60 , H04L25/4902 , H04L27/02 , H04L27/10 , H04L27/12 , H04L27/144 , H04L27/2096 , H04L27/223
摘要： Embodiments may provide a way of communicating via an electromagnetic radiator, or light source, that can be amplitude modulated such as light emitting diode (LED) lighting and receivers or detectors that can determine data from light received from the amplitude modulated electromagnetic radiator. Some embodiments may provide a method of transmitting/encoding data via modulated LED lighting and other embodiments may provide receiving/decoding data from the modulated LED lighting by means of a device with a low sampling frequency such as a relatively inexpensive camera (as might be found in a smart phone). Some embodiments are intended for indoor navigation via photogrammetry (i.e., image processing) using self-identifying LED light anchors. In many embodiments, the data signal may be communicated via the light source at amplitude modulating frequencies such that the resulting flicker is not perceivable to the human eye.
摘要翻译：实施例可以提供通过可以被调幅的电磁辐射器或光源（例如发光二极管（LED）照明）和可以从从调幅电磁辐射器接收的光确定数据的接收器或检测器进行通信的方式。一些实施例可以提供通过经调制的LED照明来发送/编码数据的方法，并且其他实施例可以通过具有低采样频率的设备（例如相对便宜的照相机）提供来自经调制的LED照明的数据的接收/解码在智能手机中）。一些实施例旨在通过使用自识别LED光锚的摄影测量（即，图像处理）进行室内导航。在许多实施例中，可以以幅度调制频率通过光源传送数据信号，使得所得到的闪烁对人眼不能察觉。

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